genericopenlibs/cppstdlib/stl/stlport/stl/_threads.h
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Tue, 02 Feb 2010 02:01:42 +0200
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/*
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 * Portions Copyright (c) 2008 Nokia Corporation and/or its subsidiary(-ies). All rights reserved.
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 *
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 * Copyright (c) 1997-1999
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 * Silicon Graphics Computer Systems, Inc.
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 *
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 * Copyright (c) 1999
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 * Boris Fomitchev
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 *
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 * This material is provided "as is", with absolutely no warranty expressed
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 * or implied. Any use is at your own risk.
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 *
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 * Permission to use or copy this software for any purpose is hereby granted
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 * without fee, provided the above notices are retained on all copies.
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 * Permission to modify the code and to distribute modified code is granted,
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 * provided the above notices are retained, and a notice that the code was
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 * modified is included with the above copyright notice.
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 *
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 */
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// WARNING: This is an internal header file, included by other C++
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// standard library headers.  You should not attempt to use this header
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// file directly.
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#ifndef _STLP_INTERNAL_THREADS_H
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#define _STLP_INTERNAL_THREADS_H
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// Supported threading models are native SGI, pthreads, uithreads
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// (similar to pthreads, but based on an earlier draft of the Posix
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// threads standard), and Win32 threads.  Uithread support by Jochen
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// Schlick, 1999, and Solaris threads generalized to them.
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#ifndef _STLP_INTERNAL_CSTDDEF
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#  include <stl/_cstddef.h>
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#endif
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#ifndef _STLP_INTERNAL_CSTDLIB
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#  include <stl/_cstdlib.h>
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#endif
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// On SUN and Mac OS X gcc, zero-initialization works just fine...
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#if defined (__sun) || (defined (__GNUC__) && defined(__APPLE__))
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#  define _STLP_MUTEX_INITIALIZER
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#endif
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/* This header defines the following atomic operation that platform should
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 * try to support as much as possible. Atomic operation are exposed as macro
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 * in order to easily test for their existance. They are:
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 * __stl_atomic_t _STLP_ATOMIC_INCREMENT(volatile __stl_atomic_t* __ptr) :
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 * increment *__ptr by 1 and returns the new value
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 * __stl_atomic_t _STLP_ATOMIC_DECREMENT(volatile __stl_atomic_t* __ptr) :
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 * decrement  *__ptr by 1 and returns the new value
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 * __stl_atomic_t _STLP_ATOMIC_EXCHANGE(volatile __stl_atomic_t* __target, __stl_atomic_t __val) :
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 * assign __val to *__target and returns former *__target value
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 * void* _STLP_ATOMIC_EXCHANGE_PTR(void* volatile* __target, void* __ptr) :
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 * assign __ptr to *__target and returns former *__target value
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 * __stl_atomic_t _STLP_ATOMIC_ADD(volatile __stl_atomic_t* __target, __stl_atomic_t __val) :
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 * does *__target = *__target + __val and returns the old *__target value
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 */
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#if defined (_STLP_WIN32) || defined (__sgi) || defined (_STLP_SPARC_SOLARIS_THREADS)
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typedef long __stl_atomic_t;
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#else
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/* Don't import whole namespace!!!! - ptr */
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// # if defined (_STLP_USE_NAMESPACES) && ! defined (_STLP_VENDOR_GLOBAL_CSTD)
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// // using _STLP_VENDOR_CSTD::size_t;
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// using namespace _STLP_VENDOR_CSTD;
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// # endif
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typedef size_t __stl_atomic_t;
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#endif
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#if defined (_STLP_THREADS)
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#  if defined (_STLP_SGI_THREADS)
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#    include <mutex.h>
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// Hack for SGI o32 compilers.
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#    if !defined(__add_and_fetch) && \
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        (__mips < 3 || !(defined (_ABIN32) || defined(_ABI64)))
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#      define __add_and_fetch(__l,__v) add_then_test((unsigned long*)__l,__v)
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#      define __test_and_set(__l,__v)  test_and_set(__l,__v)
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#    endif /* o32 */
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#    if __mips < 3 || !(defined (_ABIN32) || defined(_ABI64))
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#      define _STLP_ATOMIC_EXCHANGE(__p, __q) test_and_set(__p, __q)
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#    else
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#      define _STLP_ATOMIC_EXCHANGE(__p, __q) __test_and_set((unsigned long*)__p, (unsigned long)__q)
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#    endif
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#    define _STLP_ATOMIC_INCREMENT(__x) __add_and_fetch(__x, 1)
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#    define _STLP_ATOMIC_DECREMENT(__x) __add_and_fetch(__x, (size_t) -1)
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#  elif defined (_STLP_PTHREADS)
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#    include <pthread.h>
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#    if !defined (_STLP_USE_PTHREAD_SPINLOCK)
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#      if defined (PTHREAD_MUTEX_INITIALIZER) && !defined (_STLP_MUTEX_INITIALIZER) && defined (_REENTRANT)
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#        define _STLP_MUTEX_INITIALIZER = { PTHREAD_MUTEX_INITIALIZER }
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#      endif
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//HPUX variants have (on some platforms optional) non-standard "DCE" pthreads impl
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#      if defined (_DECTHREADS_) && (defined (_PTHREAD_USE_D4) || defined (__hpux)) && !defined (_CMA_SUPPRESS_EXTERNALS_)
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#        define _STLP_PTHREAD_ATTR_DEFAULT pthread_mutexattr_default
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#      else
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#        define _STLP_PTHREAD_ATTR_DEFAULT 0
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#      endif
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#    else // _STLP_USE_PTHREAD_SPINLOCK
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#      if defined (__OpenBSD__)
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#        include <spinlock.h>
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#      endif
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#    endif // _STLP_USE_PTHREAD_SPINLOCK
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   112
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#    if defined (__GNUC__) && defined (__i386__)
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   114
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#      if !defined (_STLP_ATOMIC_INCREMENT)
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inline long _STLP_atomic_increment_gcc_x86(long volatile* p) {
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  long result;
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  __asm__ __volatile__
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    ("lock; xaddl  %1, %0;"
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    :"=m" (*p), "=r" (result)
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    :"m" (*p),  "1"  (1)
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    :"cc");
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  return result + 1;
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}
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#        define _STLP_ATOMIC_INCREMENT(__x) (_STLP_atomic_increment_gcc_x86((long volatile*)__x))
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#      endif
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   127
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#      if !defined (_STLP_ATOMIC_DECREMENT)
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inline long _STLP_atomic_decrement_gcc_x86(long volatile* p) {
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  long result;
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  __asm__ __volatile__
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    ("lock; xaddl  %1, %0;"
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    :"=m" (*p), "=r" (result)
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    :"m" (*p),  "1"  (-1)
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    :"cc");
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  return result - 1;
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}
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#        define _STLP_ATOMIC_DECREMENT(__x) (_STLP_atomic_decrement_gcc_x86((long volatile*)__x))
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#      endif
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   140
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#      if !defined (_STLP_ATOMIC_ADD)
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inline long _STLP_atomic_add_gcc_x86(long volatile* p, long addend) {
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  long result;
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  __asm__ __volatile__
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    ("lock; xaddl %1, %0;"
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    :"=m" (*p), "=r" (result)
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    :"m"  (*p), "1"  (addend)
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    :"cc");
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 return result + addend;
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}
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#        define _STLP_ATOMIC_ADD(__dst, __val)  (_STLP_atomic_add_gcc_x86((long volatile*)__dst, (long)__val))
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#      endif
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   153
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#    endif /* if defined(__GNUC__) && defined(__i386__) */
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   155
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#  elif defined (_STLP_WIN32THREADS)
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   157
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   158
#    if !defined (_STLP_ATOMIC_INCREMENT)
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#      if !defined (_STLP_NEW_PLATFORM_SDK)
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#        define _STLP_ATOMIC_INCREMENT(__x)           InterlockedIncrement(__CONST_CAST(long*, __x))
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#        define _STLP_ATOMIC_DECREMENT(__x)           InterlockedDecrement(__CONST_CAST(long*, __x))
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#        define _STLP_ATOMIC_EXCHANGE(__x, __y)       InterlockedExchange(__CONST_CAST(long*, __x), __y)
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#      else
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   164
#        define _STLP_ATOMIC_INCREMENT(__x)           InterlockedIncrement(__x)
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#        define _STLP_ATOMIC_DECREMENT(__x)           InterlockedDecrement(__x)
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#        define _STLP_ATOMIC_EXCHANGE(__x, __y)       InterlockedExchange(__x, __y)
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#      endif
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   168
#      define _STLP_ATOMIC_EXCHANGE_PTR(__x, __y)     STLPInterlockedExchangePointer(__x, __y)
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/*
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 * The following functionnality is only available since Windows 98, those that are targeting previous OSes
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 * should define _WIN32_WINDOWS to a value lower that the one of Win 98, see Platform SDK documentation for
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 * more informations:
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 */
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#      if defined (_STLP_NEW_PLATFORM_SDK) && (!defined (_STLP_WIN32_VERSION) || (_STLP_WIN32_VERSION >= 0x0410))
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#        define _STLP_ATOMIC_ADD(__dst, __val) InterlockedExchangeAdd(__dst, __val)
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#      endif
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#    endif
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   178
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#  elif defined (__DECC) || defined (__DECCXX)
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   180
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#    include <machine/builtins.h>
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#    define _STLP_ATOMIC_EXCHANGE __ATOMIC_EXCH_LONG
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#    define _STLP_ATOMIC_INCREMENT(__x) __ATOMIC_ADD_LONG(__x, 1)
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   184
#    define _STLP_ATOMIC_DECREMENT(__x) __ATOMIC_ADD_LONG(__x, -1)
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   185
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#  elif defined(_STLP_SPARC_SOLARIS_THREADS)
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   187
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#    include <stl/_sparc_atomic.h>
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   189
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#  elif defined (_STLP_UITHREADS)
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   191
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// this inclusion is potential hazard to bring up all sorts
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// of old-style headers. Let's assume vendor already know how
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   194
// to deal with that.
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   195
#    ifndef _STLP_INTERNAL_CTIME
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#      include <stl/_ctime.h>
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#    endif
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#    if defined (_STLP_USE_NAMESPACES) && ! defined (_STLP_VENDOR_GLOBAL_CSTD)
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   199
using _STLP_VENDOR_CSTD::time_t;
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#    endif
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   201
#    include <synch.h>
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   202
#    include <cstdio>
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   203
#    include <cwchar>
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   204
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#  elif defined (_STLP_BETHREADS)
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   206
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   207
#    include <OS.h>
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   208
#    include <cassert>
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   209
#    include <stdio.h>
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   210
#    define _STLP_MUTEX_INITIALIZER = { 0 }
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   211
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#  elif defined (_STLP_NWTHREADS)
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   213
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#    include <nwthread.h>
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#    include <nwsemaph.h>
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   216
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#  elif defined(_STLP_OS2THREADS)
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#    if defined (__GNUC__)
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#      define INCL_DOSSEMAPHORES
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#      include <os2.h>
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#    else
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// This section serves to replace os2.h for VisualAge C++
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  typedef unsigned long ULONG;
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#      if !defined (__HEV__)  /* INCL_SEMAPHORE may also define HEV */
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#        define __HEV__
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  typedef ULONG HEV;
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  typedef HEV*  PHEV;
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#      endif
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  typedef ULONG APIRET;
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  typedef ULONG HMTX;
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  typedef HMTX*  PHMTX;
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  typedef const char*  PCSZ;
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  typedef ULONG BOOL32;
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  APIRET _System DosCreateMutexSem(PCSZ pszName, PHEV phev, ULONG flAttr, BOOL32 fState);
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  APIRET _System DosRequestMutexSem(HMTX hmtx, ULONG ulTimeout);
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  APIRET _System DosReleaseMutexSem(HMTX hmtx);
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  APIRET _System DosCloseMutexSem(HMTX hmtx);
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#      define _STLP_MUTEX_INITIALIZER = { 0 }
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#    endif /* GNUC */
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#  endif
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#else
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/* no threads */
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#  define _STLP_ATOMIC_INCREMENT(__x) ++(*__x)
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#  define _STLP_ATOMIC_DECREMENT(__x) --(*__x)
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/* We do not grant other atomic operations as they are useless if STLport do not have
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 * to be thread safe
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 */
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#endif
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#if !defined (_STLP_MUTEX_INITIALIZER)
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#  if defined(_STLP_ATOMIC_EXCHANGE)
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#    define _STLP_MUTEX_INITIALIZER = { 0 }
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#  elif defined(_STLP_UITHREADS)
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#    define _STLP_MUTEX_INITIALIZER = { DEFAULTMUTEX }
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#  else
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#    define _STLP_MUTEX_INITIALIZER
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#  endif
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#endif
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_STLP_BEGIN_NAMESPACE
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#if defined (_STLP_THREADS) && !defined (_STLP_USE_PTHREAD_SPINLOCK)
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// Helper struct.  This is a workaround for various compilers that don't
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// handle static variables in inline functions properly.
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template <int __inst>
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struct _STLP_mutex_spin {
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  enum { __low_max = 30, __high_max = 1000 };
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  // Low if we suspect uniprocessor, high for multiprocessor.
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  //Note: For SYMBIAN Emulator, these entries are to be considered WSD.  
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  //Still, EWSD solution can't be applied since it's templated.
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  static unsigned __max;
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  static unsigned __last;
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  static void _STLP_CALL _M_do_lock(volatile __stl_atomic_t* __lock);
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  static void _STLP_CALL _S_nsec_sleep(int __log_nsec);
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};
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#endif // !_STLP_USE_PTHREAD_SPINLOCK
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// Locking class.  Note that this class *does not have a constructor*.
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// It must be initialized either statically, with _STLP_MUTEX_INITIALIZER,
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// or dynamically, by explicitly calling the _M_initialize member function.
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// (This is similar to the ways that a pthreads mutex can be initialized.)
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// There are explicit member functions for acquiring and releasing the lock.
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// There is no constructor because static initialization is essential for
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// some uses, and only a class aggregate (see section 8.5.1 of the C++
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// standard) can be initialized that way.  That means we must have no
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// constructors, no base classes, no virtual functions, and no private or
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// protected members.
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// For non-static cases, clients should use  _STLP_mutex.
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struct _STLP_CLASS_DECLSPEC _STLP_mutex_base {
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#if defined (_STLP_ATOMIC_EXCHANGE) || defined (_STLP_SGI_THREADS)
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  // It should be relatively easy to get this to work on any modern Unix.
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  volatile __stl_atomic_t _M_lock;
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#endif
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#if defined (_STLP_THREADS)
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#  if defined (_STLP_ATOMIC_EXCHANGE)
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  inline void _M_initialize() { _M_lock = 0; }
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  inline void _M_destroy() {}
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  void _M_acquire_lock() {
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    _STLP_mutex_spin<0>::_M_do_lock(&_M_lock);
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  }
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  inline void _M_release_lock() {
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    volatile __stl_atomic_t* __lock = &_M_lock;
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#    if defined(_STLP_SGI_THREADS) && defined(__GNUC__) && __mips >= 3
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    asm("sync");
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    *__lock = 0;
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#    elif defined(_STLP_SGI_THREADS) && __mips >= 3 && \
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         (defined (_ABIN32) || defined(_ABI64))
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    __lock_release(__lock);
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#    elif defined (_STLP_SPARC_SOLARIS_THREADS)
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#      if defined (__WORD64) || defined (__arch64__) || defined (__sparcv9) || defined (__sparcv8plus)
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    asm("membar #StoreStore ; membar #LoadStore");
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#      else
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    asm(" stbar ");
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#      endif
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    *__lock = 0;
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#    else
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   327
    *__lock = 0;
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   328
    // This is not sufficient on many multiprocessors, since
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   329
    // writes to protected variables and the lock may be reordered.
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   330
#    endif
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   331
  }
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   332
#  elif defined (_STLP_PTHREADS)
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diff changeset
   333
#    if defined (_STLP_USE_PTHREAD_SPINLOCK)
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diff changeset
   334
#      if !defined (__OpenBSD__)
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diff changeset
   335
  pthread_spinlock_t _M_lock;
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diff changeset
   336
  inline void _M_initialize() { pthread_spin_init( &_M_lock, 0 ); }
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diff changeset
   337
  inline void _M_destroy() { pthread_spin_destroy( &_M_lock ); }
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diff changeset
   338
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diff changeset
   339
  // sorry, but no static initializer for pthread_spinlock_t;
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diff changeset
   340
  // this will not work for compilers that has problems with call
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diff changeset
   341
  // constructor of static object...
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diff changeset
   342
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diff changeset
   343
  // _STLP_mutex_base()
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diff changeset
   344
  //   { pthread_spin_init( &_M_lock, 0 ); }
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diff changeset
   345
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   346
  // ~_STLP_mutex_base()
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diff changeset
   347
  //   { pthread_spin_destroy( &_M_lock ); }
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   348
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   349
  inline void _M_acquire_lock() { pthread_spin_lock( &_M_lock ); }
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diff changeset
   350
  inline void _M_release_lock() { pthread_spin_unlock( &_M_lock ); }
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diff changeset
   351
#      else // __OpenBSD__
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   352
  spinlock_t _M_lock;
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diff changeset
   353
  inline void _M_initialize() { _SPINLOCK_INIT( &_M_lock ); }
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diff changeset
   354
  inline void _M_destroy() { }
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diff changeset
   355
  inline void _M_acquire_lock() { _SPINLOCK( &_M_lock ); }
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diff changeset
   356
  inline void _M_release_lock() { _SPINUNLOCK( &_M_lock ); }
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parents:
diff changeset
   357
#      endif // __OpenBSD__
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diff changeset
   358
#    else // !_STLP_USE_PTHREAD_SPINLOCK
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parents:
diff changeset
   359
  pthread_mutex_t _M_lock;
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parents:
diff changeset
   360
  inline void _M_initialize()
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parents:
diff changeset
   361
  { pthread_mutex_init(&_M_lock,_STLP_PTHREAD_ATTR_DEFAULT); }
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parents:
diff changeset
   362
  inline void _M_destroy()
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parents:
diff changeset
   363
  { pthread_mutex_destroy(&_M_lock); }
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parents:
diff changeset
   364
  inline void _M_acquire_lock() {
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parents:
diff changeset
   365
#      if defined ( __hpux ) && ! defined (PTHREAD_MUTEX_INITIALIZER)
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diff changeset
   366
    if (!_M_lock.field1)  _M_initialize();
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diff changeset
   367
#      endif
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diff changeset
   368
    pthread_mutex_lock(&_M_lock);
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diff changeset
   369
  }
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diff changeset
   370
  inline void _M_release_lock() { pthread_mutex_unlock(&_M_lock); }
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parents:
diff changeset
   371
#    endif // !_STLP_USE_PTHREAD_SPINLOCK
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diff changeset
   372
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   373
#  elif defined (_STLP_UITHREADS)
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diff changeset
   374
  mutex_t _M_lock;
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diff changeset
   375
  inline void _M_initialize()
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diff changeset
   376
  { mutex_init(&_M_lock, 0, NULL); }
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parents:
diff changeset
   377
  inline void _M_destroy()
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parents:
diff changeset
   378
  { mutex_destroy(&_M_lock); }
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parents:
diff changeset
   379
  inline void _M_acquire_lock() { mutex_lock(&_M_lock); }
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parents:
diff changeset
   380
  inline void _M_release_lock() { mutex_unlock(&_M_lock); }
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parents:
diff changeset
   381
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diff changeset
   382
#  elif defined (_STLP_OS2THREADS)
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parents:
diff changeset
   383
  HMTX _M_lock;
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parents:
diff changeset
   384
  inline void _M_initialize() { DosCreateMutexSem(NULL, &_M_lock, 0, false); }
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parents:
diff changeset
   385
  inline void _M_destroy() { DosCloseMutexSem(_M_lock); }
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parents:
diff changeset
   386
  inline void _M_acquire_lock() {
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parents:
diff changeset
   387
    if (!_M_lock) _M_initialize();
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parents:
diff changeset
   388
    DosRequestMutexSem(_M_lock, SEM_INDEFINITE_WAIT);
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parents:
diff changeset
   389
  }
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parents:
diff changeset
   390
  inline void _M_release_lock() { DosReleaseMutexSem(_M_lock); }
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parents:
diff changeset
   391
#  elif defined (_STLP_BETHREADS)
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parents:
diff changeset
   392
  sem_id sem;
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parents:
diff changeset
   393
  inline void _M_initialize() {
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parents:
diff changeset
   394
    sem = create_sem(1, "STLPort");
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parents:
diff changeset
   395
    assert(sem > 0);
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parents:
diff changeset
   396
  }
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parents:
diff changeset
   397
  inline void _M_destroy() {
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parents:
diff changeset
   398
    int t = delete_sem(sem);
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parents:
diff changeset
   399
    assert(t == B_NO_ERROR);
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parents:
diff changeset
   400
  }
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parents:
diff changeset
   401
  inline void _M_acquire_lock();
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parents:
diff changeset
   402
  inline void _M_release_lock() {
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parents:
diff changeset
   403
    status_t t = release_sem(sem);
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parents:
diff changeset
   404
    assert(t == B_NO_ERROR);
e4d67989cc36 Revision: 201002
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parents:
diff changeset
   405
  }
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parents:
diff changeset
   406
#  elif defined (_STLP_NWTHREADS)
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parents:
diff changeset
   407
  LONG _M_lock;
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parents:
diff changeset
   408
  inline void _M_initialize()
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parents:
diff changeset
   409
  { _M_lock = OpenLocalSemaphore(1); }
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parents:
diff changeset
   410
  inline void _M_destroy()
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parents:
diff changeset
   411
  { CloseLocalSemaphore(_M_lock); }
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parents:
diff changeset
   412
  inline void _M_acquire_lock()
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   413
  { WaitOnLocalSemaphore(_M_lock); }
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   414
  inline void _M_release_lock() { SignalLocalSemaphore(_M_lock); }
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   415
#  else      //*ty 11/24/2001 - added configuration check
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parents:
diff changeset
   416
#    error "Unknown thread facility configuration"
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parents:
diff changeset
   417
#  endif
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parents:
diff changeset
   418
#else /* No threads */
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parents:
diff changeset
   419
  inline void _M_initialize() {}
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   420
  inline void _M_destroy() {}
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   421
  inline void _M_acquire_lock() {}
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   422
  inline void _M_release_lock() {}
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   423
#endif // _STLP_PTHREADS
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parents:
diff changeset
   424
};
e4d67989cc36 Revision: 201002
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parents:
diff changeset
   425
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   426
// Locking class.  The constructor initializes the lock, the destructor destroys it.
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parents:
diff changeset
   427
// Well - behaving class, does not need static initializer
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parents:
diff changeset
   428
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   429
class _STLP_CLASS_DECLSPEC _STLP_mutex : public _STLP_mutex_base {
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parents:
diff changeset
   430
  public:
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   431
    inline _STLP_mutex () { _M_initialize(); }
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parents:
diff changeset
   432
    inline ~_STLP_mutex () { _M_destroy(); }
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parents:
diff changeset
   433
  private:
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parents:
diff changeset
   434
    _STLP_mutex(const _STLP_mutex&);
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   435
    void operator=(const _STLP_mutex&);
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   436
};
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   437
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   438
// A locking class that uses _STLP_STATIC_MUTEX.  The constructor takes
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   439
// a reference to an _STLP_STATIC_MUTEX, and acquires a lock.  The destructor
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   440
// releases the lock.
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   441
// It's not clear that this is exactly the right functionality.
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   442
// It will probably change in the future.
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   443
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   444
struct _STLP_CLASS_DECLSPEC _STLP_auto_lock {
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   445
  _STLP_auto_lock(_STLP_STATIC_MUTEX& __lock) : _M_lock(__lock)
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   446
  { _M_lock._M_acquire_lock(); }
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   447
  ~_STLP_auto_lock()
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   448
  { _M_lock._M_release_lock(); }
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   449
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   450
private:
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   451
  _STLP_STATIC_MUTEX& _M_lock;
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   452
  void operator=(const _STLP_auto_lock&);
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   453
  _STLP_auto_lock(const _STLP_auto_lock&);
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   454
};
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   455
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   456
/*
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   457
 * Class _Refcount_Base provides a type, __stl_atomic_t, a data member,
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   458
 * _M_ref_count, and member functions _M_incr and _M_decr, which perform
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   459
 * atomic preincrement/predecrement.  The constructor initializes
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   460
 * _M_ref_count.
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   461
 */
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   462
class _STLP_CLASS_DECLSPEC _Refcount_Base {
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   463
  // The data member _M_ref_count
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   464
#if defined (__DMC__)
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   465
public:
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   466
#endif
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   467
  _STLP_VOLATILE __stl_atomic_t _M_ref_count;
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   468
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   469
#if defined (_STLP_THREADS) && \
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   470
   (!defined (_STLP_ATOMIC_INCREMENT) || !defined (_STLP_ATOMIC_DECREMENT) || \
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   471
    (defined (_STLP_WIN32_VERSION) && (_STLP_WIN32_VERSION <= 0x0400)))
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   472
#  define _STLP_USE_MUTEX
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   473
  _STLP_mutex _M_mutex;
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   474
#endif
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   475
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   476
  public:
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   477
  // Constructor
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   478
  _Refcount_Base(__stl_atomic_t __n) : _M_ref_count(__n) {}
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   479
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   480
  // _M_incr and _M_decr
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   481
#if defined (_STLP_THREADS)
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   482
#  if !defined (_STLP_USE_MUTEX)
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   483
   __stl_atomic_t _M_incr() { return _STLP_ATOMIC_INCREMENT(&_M_ref_count); }
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   484
   __stl_atomic_t _M_decr() { return _STLP_ATOMIC_DECREMENT(&_M_ref_count); }
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   485
#  else
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   486
#    undef _STLP_USE_MUTEX
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   487
  __stl_atomic_t _M_incr() {
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   488
    _STLP_auto_lock l(_M_mutex);
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   489
    return ++_M_ref_count;
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   490
  }
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   491
  __stl_atomic_t _M_decr() {
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   492
    _STLP_auto_lock l(_M_mutex);
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   493
    return --_M_ref_count;
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   494
  }
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   495
#  endif
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   496
#else  /* No threads */
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   497
  __stl_atomic_t _M_incr() { return ++_M_ref_count; }
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   498
  __stl_atomic_t _M_decr() { return --_M_ref_count; }
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   499
#endif
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   500
};
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   501
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   502
_STLP_END_NAMESPACE
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   503
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   504
#ifdef __SYMBIAN32__WSD__   
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   505
_STLP_DECLSPEC std::_STLP_STATIC_MUTEX& exp_get_threads_S_swap_lock();
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   506
_STLP_DECLSPEC std::_STLP_STATIC_MUTEX& exp_get_threads_0_S_swap_lock();
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   507
#endif
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   508
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   509
_STLP_BEGIN_NAMESPACE
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   510
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   511
/* Atomic swap on __stl_atomic_t
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   512
 * This is guaranteed to behave as though it were atomic only if all
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   513
 * possibly concurrent updates use _Atomic_swap.
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   514
 * In some cases the operation is emulated with a lock.
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   515
 * Idem for _Atomic_swap_ptr
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   516
 */
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   517
/* Helper struct to handle following cases:
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   518
 * - on platforms where sizeof(__stl_atomic_t) == sizeof(void*) atomic
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   519
 *   exchange can be done on pointers
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   520
 * - on platform without atomic operation swap is done in a critical section,
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   521
 *   portable but inefficient.
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   522
 */
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   523
template <int __use_ptr_atomic_swap>
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   524
class _Atomic_swap_struct {
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   525
public:
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   526
#if defined (_STLP_THREADS) && \
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   527
    !defined (_STLP_ATOMIC_EXCHANGE) && \
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   528
    (defined (_STLP_PTHREADS) || defined (_STLP_UITHREADS) || defined (_STLP_OS2THREADS) || \
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   529
     defined (_STLP_USE_PTHREAD_SPINLOCK) || defined (_STLP_NWTHREADS))
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   530
#  define _STLP_USE_ATOMIC_SWAP_MUTEX
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   531
#if !defined(__SYMBIAN32__WSD__)
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   532
  static _STLP_STATIC_MUTEX _S_swap_lock;  
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   533
#else
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   534
  static _STLP_STATIC_MUTEX& get_threads_S_swap_lock()
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   535
	  { return ::exp_get_threads_S_swap_lock(); }
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   536
# define _S_swap_lock get_threads_S_swap_lock()
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   537
#endif
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   538
#endif
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   539
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   540
  static __stl_atomic_t _S_swap(_STLP_VOLATILE __stl_atomic_t* __p, __stl_atomic_t __q) {
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   541
#if defined (_STLP_THREADS)
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   542
#  if defined (_STLP_ATOMIC_EXCHANGE)
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   543
  return _STLP_ATOMIC_EXCHANGE(__p, __q);
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   544
#  elif defined (_STLP_USE_ATOMIC_SWAP_MUTEX)
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   545
  _S_swap_lock._M_acquire_lock();
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   546
  __stl_atomic_t __result = *__p;
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   547
  *__p = __q;
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   548
  _S_swap_lock._M_release_lock();
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   549
  return __result;
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   550
#  else
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   551
#    error Missing atomic swap implementation
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   552
#  endif
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   553
#else
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   554
  /* no threads */
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   555
  __stl_atomic_t __result = *__p;
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   556
  *__p = __q;
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   557
  return __result;
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   558
#endif // _STLP_THREADS
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   559
  }
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   560
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   561
  static void* _S_swap_ptr(void* _STLP_VOLATILE* __p, void* __q) {
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   562
#if defined (_STLP_THREADS)
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   563
#  if defined (_STLP_ATOMIC_EXCHANGE_PTR)
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   564
  return _STLP_ATOMIC_EXCHANGE_PTR(__p, __q);
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   565
#  elif defined (_STLP_ATOMIC_EXCHANGE)
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   566
  _STLP_STATIC_ASSERT(sizeof(__stl_atomic_t) == sizeof(void*))
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   567
  return __REINTERPRET_CAST(void*, _STLP_ATOMIC_EXCHANGE(__REINTERPRET_CAST(volatile __stl_atomic_t*, __p),
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   568
                                                         __REINTERPRET_CAST(__stl_atomic_t, __q))
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   569
                            );
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   570
#  elif defined (_STLP_USE_ATOMIC_SWAP_MUTEX)
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   571
  _S_swap_lock._M_acquire_lock();
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   572
  void *__result = *__p;
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   573
  *__p = __q;
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   574
  _S_swap_lock._M_release_lock();
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   575
  return __result;
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   576
#  else
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   577
#    error Missing pointer atomic swap implementation
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   578
#  endif
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   579
#else
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   580
  /* no thread */
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   581
  void *__result = *__p;
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   582
  *__p = __q;
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   583
  return __result;
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   584
#endif
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   585
  }
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   586
};
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   587
#if defined(__SYMBIAN32__WSD__)
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   588
# undef _S_swap_lock
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   589
#endif  
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   590
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   591
_STLP_TEMPLATE_NULL
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   592
class _Atomic_swap_struct<0> {
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   593
public:
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   594
#if defined (_STLP_THREADS) && \
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   595
    (!defined (_STLP_ATOMIC_EXCHANGE) || !defined (_STLP_ATOMIC_EXCHANGE_PTR)) && \
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   596
    (defined (_STLP_PTHREADS) || defined (_STLP_UITHREADS) || defined (_STLP_OS2THREADS) || \
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   597
     defined (_STLP_USE_PTHREAD_SPINLOCK) || defined (_STLP_NWTHREADS))
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   598
#  define _STLP_USE_ATOMIC_SWAP_MUTEX
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   599
#if !defined(__SYMBIAN32__WSD__)
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   600
  static _STLP_STATIC_MUTEX _S_swap_lock;
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   601
#else
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   602
  static _STLP_STATIC_MUTEX& get_threads_0_S_swap_lock()
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   603
	  { return ::exp_get_threads_0_S_swap_lock(); }
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   604
# define _S_swap_lock get_threads_0_S_swap_lock()
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   605
#endif  
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   606
#endif
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   607
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   608
  static __stl_atomic_t _S_swap(_STLP_VOLATILE __stl_atomic_t* __p, __stl_atomic_t __q) {
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   609
#if defined (_STLP_THREADS)
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   610
#  if defined (_STLP_ATOMIC_EXCHANGE)
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   611
  return _STLP_ATOMIC_EXCHANGE(__p, __q);
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   612
#  elif defined (_STLP_USE_ATOMIC_SWAP_MUTEX)
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   613
  /* This should be portable, but performance is expected
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   614
   * to be quite awful.  This really needs platform specific
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   615
   * code.
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   616
   */
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   617
  _S_swap_lock._M_acquire_lock();
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   618
  __stl_atomic_t __result = *__p;
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   619
  *__p = __q;
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   620
  _S_swap_lock._M_release_lock();
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   621
  return __result;
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   622
#  else
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   623
#    error Missing atomic swap implementation
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   624
#  endif
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   625
#else
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   626
  /* no threads */
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   627
  __stl_atomic_t __result = *__p;
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   628
  *__p = __q;
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   629
  return __result;
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   630
#endif // _STLP_THREADS
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   631
  }
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   632
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   633
  static void* _S_swap_ptr(void* _STLP_VOLATILE* __p, void* __q) {
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   634
#if defined (_STLP_THREADS)
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   635
#  if defined (_STLP_ATOMIC_EXCHANGE_PTR)
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   636
  return _STLP_ATOMIC_EXCHANGE_PTR(__p, __q);
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   637
#  elif defined (_STLP_ATOMIC_EXCHANGE)
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   638
  _STLP_STATIC_ASSERT(sizeof(__stl_atomic_t) == sizeof(void*))
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   639
  return __REINTERPRET_CAST(void*, _STLP_ATOMIC_EXCHANGE(__REINTERPRET_CAST(volatile __stl_atomic_t*, __p),
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   640
                                                         __REINTERPRET_CAST(__stl_atomic_t, __q))
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   641
                            );
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   642
#  elif defined (_STLP_USE_ATOMIC_SWAP_MUTEX)
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   643
  _S_swap_lock._M_acquire_lock();
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   644
  void *__result = *__p;
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   645
  *__p = __q;
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   646
  _S_swap_lock._M_release_lock();
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   647
  return __result;
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   648
#  else
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   649
#    error Missing pointer atomic swap implementation
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   650
#  endif
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   651
#else
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   652
  /* no thread */
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   653
  void *__result = *__p;
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   654
  *__p = __q;
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   655
  return __result;
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   656
#endif
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   657
  }
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   658
};
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   659
#if defined(__SYMBIAN32__WSD__)
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   660
# undef _S_swap_lock
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   661
#endif  
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   662
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   663
#if defined (_STLP_MSVC) && (_STLP_MSVC == 1300)
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   664
#  pragma warning (push)
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   665
#  pragma warning (disable : 4189) //__use_ptr_atomic_swap initialized but not used
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   666
#endif
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   667
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   668
inline __stl_atomic_t _STLP_CALL _Atomic_swap(_STLP_VOLATILE __stl_atomic_t * __p, __stl_atomic_t __q) {
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   669
  const int __use_ptr_atomic_swap = sizeof(__stl_atomic_t) == sizeof(void*);
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   670
  return _Atomic_swap_struct<__use_ptr_atomic_swap>::_S_swap(__p, __q);
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   671
}
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   672
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   673
inline void* _STLP_CALL _Atomic_swap_ptr(void* _STLP_VOLATILE* __p, void* __q) {
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   674
  const int __use_ptr_atomic_swap = sizeof(__stl_atomic_t) == sizeof(void*);
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   675
  return _Atomic_swap_struct<__use_ptr_atomic_swap>::_S_swap_ptr(__p, __q);
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   676
}
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   677
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   678
#if defined (_STLP_MSVC) && (_STLP_MSVC == 1300)
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   679
#  pragma warning (pop)
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   680
#endif
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   681
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   682
#if defined (_STLP_BETHREADS)
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   683
template <int __inst>
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   684
struct _STLP_beos_static_lock_data {
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   685
  static bool is_init;
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   686
  struct mutex_t : public _STLP_mutex {
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   687
    mutex_t()
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   688
    { _STLP_beos_static_lock_data<0>::is_init = true; }
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   689
    ~mutex_t()
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   690
    { _STLP_beos_static_lock_data<0>::is_init = false; }
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   691
  };
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   692
  static mutex_t mut;
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   693
};
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   694
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   695
template <int __inst>
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   696
bool _STLP_beos_static_lock_data<__inst>::is_init = false;
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   697
template <int __inst>
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   698
typename _STLP_beos_static_lock_data<__inst>::mutex_t _STLP_beos_static_lock_data<__inst>::mut;
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   699
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   700
inline void _STLP_mutex_base::_M_acquire_lock() {
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   701
  if (sem == 0) {
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   702
    // we need to initialise on demand here
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   703
    // to prevent race conditions use our global
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   704
    // mutex if it's available:
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   705
    if (_STLP_beos_static_lock_data<0>::is_init) {
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   706
      _STLP_auto_lock al(_STLP_beos_static_lock_data<0>::mut);
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   707
      if (sem == 0) _M_initialize();
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   708
    }
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   709
    else {
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   710
      // no lock available, we must still be
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   711
      // in startup code, THERE MUST BE ONE THREAD
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   712
      // ONLY active at this point.
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   713
      _M_initialize();
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   714
    }
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   715
  }
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   716
  status_t t;
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   717
  t = acquire_sem(sem);
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   718
  assert(t == B_NO_ERROR);
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   719
}
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   720
#endif
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   721
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   722
_STLP_END_NAMESPACE
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   723
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   724
#if !defined (_STLP_LINK_TIME_INSTANTIATION)
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   725
#  include <stl/_threads.c>
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   726
#endif
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   727
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   728
#endif /* _STLP_INTERNAL_THREADS_H */
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   729
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   730
// Local Variables:
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   731
// mode:C++
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   732
// End: