--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/fontservices/textshaperplugin/IcuSource/common/unicode/uclean.h Tue Feb 02 02:02:46 2010 +0200
@@ -0,0 +1,267 @@
+/*
+******************************************************************************
+* *
+* Copyright (C) 2001-2005, International Business Machines *
+* Corporation and others. All Rights Reserved. *
+* *
+******************************************************************************
+* file name: uclean.h
+* encoding: US-ASCII
+* tab size: 8 (not used)
+* indentation:4
+*
+* created on: 2001July05
+* created by: George Rhoten
+*/
+
+#ifndef __UCLEAN_H__
+#define __UCLEAN_H__
+
+#include "unicode/utypes.h"
+/**
+ * \file
+ * \brief C API: Initialize and clean up ICU
+ */
+
+/**
+ * Initialize ICU. The description further below applies to ICU 2.6 to ICU 3.4.
+ * Starting with ICU 3.4, u_init() needs not be called any more for
+ * ensuring thread safety, but it can give an indication for whether ICU
+ * can load its data. In ICU 3.4, it will try to load the converter alias table
+ * (cnvalias.icu) and give an error code if that fails.
+ * This may change in the future.
+ * <p>
+ * For ensuring the availability of necessary data, an application should
+ * open the service objects (converters, collators, etc.) that it will use
+ * and check for error codes there.
+ * <p>
+ * Documentation for ICU 2.6 to ICU 3.4:
+ * <p>
+ * This function loads and initializes data items
+ * that are required internally by various ICU functions. Use of this explicit
+ * initialization is required in multi-threaded applications; in
+ * single threaded apps, use is optional, but incurs little additional
+ * cost, and is thus recommended.
+ * <p>
+ * In multi-threaded applications, u_init() should be called in the
+ * main thread before starting additional threads, or, alternatively
+ * it can be called in each individual thread once, before other ICU
+ * functions are called in that thread. In this second scenario, the
+ * application must guarantee that the first call to u_init() happen
+ * without contention, in a single thread only.
+ * <p>
+ * If <code>u_setMemoryFunctions()</code> or
+ * <code>u_setMutexFunctions</code> are needed (uncommon), they must be
+ * called _before_ <code>u_init()</code>.
+ * <p>
+ * Extra, repeated, or otherwise unneeded calls to u_init() do no harm,
+ * other than taking a small amount of time.
+ *
+ * @param status An ICU UErrorCode parameter. It must not be <code>NULL</code>.
+ * An Error will be returned if some required part of ICU data can not
+ * be loaded or initialized.
+ * The function returns immediately if the input error code indicates a
+ * failure, as usual.
+ *
+ * @stable ICU 2.6
+ */
+U_STABLE void U_EXPORT2
+u_init(UErrorCode *status);
+
+/**
+ * Clean up the system resources, such as allocated memory or open files,
+ * used in all ICU libraries. This will free/delete all memory owned by the
+ * ICU libraries, and return them to their original load state. All open ICU
+ * items (collators, resource bundles, converters, etc.) must be closed before
+ * calling this function, otherwise ICU may not free its allocated memory
+ * (e.g. close your converters and resource bundles before calling this
+ * function). Generally, this function should be called once just before
+ * an application exits. For applications that dynamically load and unload
+ * the ICU libraries (relatively uncommon), u_cleanup() should be called
+ * just before the library unload.
+ * <p>
+ * u_cleanup() also clears any ICU heap functions, mutex functions or
+ * trace functions that may have been set for the process.
+ * This has the effect of restoring ICU to its initial condition, before
+ * any of these override functions were installed. Refer to
+ * u_setMemoryFunctions(), u_setMutexFunctions and
+ * utrace_setFunctions(). If ICU is to be reinitialized after after
+ * calling u_cleanup(), these runtime override functions will need to
+ * be set up again if they are still required.
+ * <p>
+ * u_cleanup() is not thread safe. All other threads should stop using ICU
+ * before calling this function.
+ * <p>
+ * Any open ICU items will be left in an undefined state by u_cleanup(),
+ * and any subsequent attempt to use such an item will give unpredictable
+ * results.
+ * <p>
+ * After calling u_cleanup(), an application may continue to use ICU by
+ * calling u_init(). An application must invoke u_init() first from one single
+ * thread before allowing other threads call u_init(). All threads existing
+ * at the time of the first thread's call to u_init() must also call
+ * u_init() themselves before continuing with other ICU operations.
+ * <p>
+ * The use of u_cleanup() just before an application terminates is optional,
+ * but it should be called only once for performance reasons. The primary
+ * benefit is to eliminate reports of memory or resource leaks originating
+ * in ICU code from the results generated by heap analysis tools.
+ * <p>
+ * <strong>Use this function with great care!</strong>
+ * </p>
+ *
+ * @stable ICU 2.0
+ * @system
+ */
+U_STABLE void U_EXPORT2
+u_cleanup(void);
+
+
+
+
+/**
+ * An opaque pointer type that represents an ICU mutex.
+ * For user-implemented mutexes, the value will typically point to a
+ * struct or object that implements the mutex.
+ * @stable ICU 2.8
+ * @system
+ */
+typedef void *UMTX;
+
+/**
+ * Function Pointer type for a user supplied mutex initialization function.
+ * The user-supplied function will be called by ICU whenever ICU needs to create a
+ * new mutex. The function implementation should create a mutex, and store a pointer
+ * to something that uniquely identifies the mutex into the UMTX that is supplied
+ * as a paramter.
+ * @param context user supplied value, obtained from from u_setMutexFunctions().
+ * @param mutex Receives a pointer that identifies the new mutex.
+ * The mutex init function must set the UMTX to a non-null value.
+ * Subsequent calls by ICU to lock, unlock, or destroy a mutex will
+ * identify the mutex by the UMTX value.
+ * @param status Error status. Report errors back to ICU by setting this variable
+ * with an error code.
+ * @stable ICU 2.8
+ * @system
+ */
+typedef void U_CALLCONV UMtxInitFn (const void *context, UMTX *mutex, UErrorCode* status);
+
+
+/**
+ * Function Pointer type for a user supplied mutex functions.
+ * One of the user-supplied functions with this signature will be called by ICU
+ * whenever ICU needs to lock, unlock, or destroy a mutex.
+ * @param context user supplied value, obtained from from u_setMutexFunctions().
+ * @param mutex specify the mutex on which to operate.
+ * @stable ICU 2.8
+ * @system
+ */
+typedef void U_CALLCONV UMtxFn (const void *context, UMTX *mutex);
+
+
+/**
+ * Set the functions that ICU will use for mutex operations
+ * Use of this function is optional; by default (without this function), ICU will
+ * directly access system functions for mutex operations
+ * This function can only be used when ICU is in an initial, unused state, before
+ * u_init() has been called.
+ * This function may be used even when ICU has been built without multi-threaded
+ * support (see ICU_USE_THREADS pre-processor variable, umutex.h)
+ * @param context This pointer value will be saved, and then (later) passed as
+ * a parameter to the user-supplied mutex functions each time they
+ * are called.
+ * @param init Pointer to a mutex initialization function. Must be non-null.
+ * @param destroy Pointer to the mutex destroy function. Must be non-null.
+ * @param lock pointer to the mutex lock function. Must be non-null.
+ * @param unlock Pointer to the mutex unlock function. Must be non-null.
+ * @param status Receives error values.
+ * @stable ICU 2.8
+ * @system
+ */
+U_STABLE void U_EXPORT2
+u_setMutexFunctions(const void *context, UMtxInitFn *init, UMtxFn *destroy, UMtxFn *lock, UMtxFn *unlock,
+ UErrorCode *status);
+
+
+/**
+ * Pointer type for a user supplied atomic increment or decrement function.
+ * @param context user supplied value, obtained from from u_setAtomicIncDecFunctions().
+ * @param p Pointer to a 32 bit int to be incremented or decremented
+ * @return The value of the variable after the inc or dec operation.
+ * @stable ICU 2.8
+ * @system
+ */
+typedef int32_t U_CALLCONV UMtxAtomicFn(const void *context, int32_t *p);
+
+/**
+ * Set the functions that ICU will use for atomic increment and decrement of int32_t values.
+ * Use of this function is optional; by default (without this function), ICU will
+ * use its own internal implementation of atomic increment/decrement.
+ * This function can only be used when ICU is in an initial, unused state, before
+ * u_init() has been called.
+ * @param context This pointer value will be saved, and then (later) passed as
+ * a parameter to the increment and decrement functions each time they
+ * are called. This function can only be called
+ * @param inc Pointer to a function to do an atomic increment operation. Must be non-null.
+ * @param dec Pointer to a function to do an atomic decrement operation. Must be non-null.
+ * @param status Receives error values.
+ * @stable ICU 2.8
+ * @system
+ */
+U_STABLE void U_EXPORT2
+u_setAtomicIncDecFunctions(const void *context, UMtxAtomicFn *inc, UMtxAtomicFn *dec,
+ UErrorCode *status);
+
+
+
+/**
+ * Pointer type for a user supplied memory allocation function.
+ * @param context user supplied value, obtained from from u_setMemoryFunctions().
+ * @param size The number of bytes to be allocated
+ * @return Pointer to the newly allocated memory, or NULL if the allocation failed.
+ * @stable ICU 2.8
+ * @system
+ */
+typedef void *U_CALLCONV UMemAllocFn(const void *context, size_t size);
+/**
+ * Pointer type for a user supplied memory re-allocation function.
+ * @param context user supplied value, obtained from from u_setMemoryFunctions().
+ * @param size The number of bytes to be allocated
+ * @return Pointer to the newly allocated memory, or NULL if the allocation failed.
+ * @stable ICU 2.8
+ * @system
+ */
+typedef void *U_CALLCONV UMemReallocFn(const void *context, void *mem, size_t size);
+/**
+ * Pointer type for a user supplied memory free function. Behavior should be
+ * similar the standard C library free().
+ * @param context user supplied value, obtained from from u_setMemoryFunctions().
+ * @param mem Pointer to the memory block to be resized
+ * @param size The new size for the block
+ * @return Pointer to the resized memory block, or NULL if the resizing failed.
+ * @stable ICU 2.8
+ * @system
+ */
+typedef void U_CALLCONV UMemFreeFn (const void *context, void *mem);
+
+/**
+ * Set the functions that ICU will use for memory allocation.
+ * Use of this function is optional; by default (without this function), ICU will
+ * use the standard C library malloc() and free() functions.
+ * This function can only be used when ICU is in an initial, unused state, before
+ * u_init() has been called.
+ * @param context This pointer value will be saved, and then (later) passed as
+ * a parameter to the memory functions each time they
+ * are called.
+ * @param a Pointer to a user-supplied malloc function.
+ * @param r Pointer to a user-supplied realloc function.
+ * @param f Pointer to a user-supplied free function.
+ * @param status Receives error values.
+ * @stable ICU 2.8
+ * @system
+ */
+U_STABLE void U_EXPORT2
+u_setMemoryFunctions(const void *context, UMemAllocFn *a, UMemReallocFn *r, UMemFreeFn *f,
+ UErrorCode *status);
+
+#endif