author | Shane McErlean <shane.mcerlean@accenture.com> |
Fri, 27 Aug 2010 15:33:49 +0100 | |
changeset 101 | 1e82a8be084a |
parent 1 | 2fb8b9db1c86 |
permissions | -rw-r--r-- |
1
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#ifndef Py_CEVAL_H |
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#define Py_CEVAL_H |
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#ifdef __cplusplus |
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extern "C" { |
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#endif |
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/* Interface to random parts in ceval.c */ |
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PyAPI_FUNC(PyObject *) PyEval_CallObjectWithKeywords( |
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PyObject *, PyObject *, PyObject *); |
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/* DLL-level Backwards compatibility: */ |
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#undef PyEval_CallObject |
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PyAPI_FUNC(PyObject *) PyEval_CallObject(PyObject *, PyObject *); |
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/* Inline this */ |
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#define PyEval_CallObject(func,arg) \ |
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PyEval_CallObjectWithKeywords(func, arg, (PyObject *)NULL) |
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PyAPI_FUNC(PyObject *) PyEval_CallFunction(PyObject *obj, |
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const char *format, ...); |
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PyAPI_FUNC(PyObject *) PyEval_CallMethod(PyObject *obj, |
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const char *methodname, |
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const char *format, ...); |
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PyAPI_FUNC(void) PyEval_SetProfile(Py_tracefunc, PyObject *); |
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PyAPI_FUNC(void) PyEval_SetTrace(Py_tracefunc, PyObject *); |
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struct _frame; /* Avoid including frameobject.h */ |
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PyAPI_FUNC(PyObject *) PyEval_GetBuiltins(void); |
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PyAPI_FUNC(PyObject *) PyEval_GetGlobals(void); |
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PyAPI_FUNC(PyObject *) PyEval_GetLocals(void); |
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PyAPI_FUNC(struct _frame *) PyEval_GetFrame(void); |
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PyAPI_FUNC(int) PyEval_GetRestricted(void); |
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/* Look at the current frame's (if any) code's co_flags, and turn on |
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the corresponding compiler flags in cf->cf_flags. Return 1 if any |
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flag was set, else return 0. */ |
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PyAPI_FUNC(int) PyEval_MergeCompilerFlags(PyCompilerFlags *cf); |
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PyAPI_FUNC(int) Py_FlushLine(void); |
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PyAPI_FUNC(int) Py_AddPendingCall(int (*func)(void *), void *arg); |
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PyAPI_FUNC(int) Py_MakePendingCalls(void); |
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/* Protection against deeply nested recursive calls */ |
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PyAPI_FUNC(void) Py_SetRecursionLimit(int); |
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PyAPI_FUNC(int) Py_GetRecursionLimit(void); |
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#define Py_EnterRecursiveCall(where) \ |
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(_Py_MakeRecCheck(PyThreadState_GET()->recursion_depth) && \ |
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_Py_CheckRecursiveCall(where)) |
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#define Py_LeaveRecursiveCall() \ |
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(--PyThreadState_GET()->recursion_depth) |
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PyAPI_FUNC(int) _Py_CheckRecursiveCall(char *where); |
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PyAPI_DATA(int) _Py_CheckRecursionLimit; |
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#ifdef USE_STACKCHECK |
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# define _Py_MakeRecCheck(x) (++(x) > --_Py_CheckRecursionLimit) |
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#else |
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# define _Py_MakeRecCheck(x) (++(x) > _Py_CheckRecursionLimit) |
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#endif |
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PyAPI_FUNC(const char *) PyEval_GetFuncName(PyObject *); |
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PyAPI_FUNC(const char *) PyEval_GetFuncDesc(PyObject *); |
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PyAPI_FUNC(PyObject *) PyEval_GetCallStats(PyObject *); |
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PyAPI_FUNC(PyObject *) PyEval_EvalFrame(struct _frame *); |
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PyAPI_FUNC(PyObject *) PyEval_EvalFrameEx(struct _frame *f, int exc); |
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/* this used to be handled on a per-thread basis - now just two globals */ |
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PyAPI_DATA(volatile int) _Py_Ticker; |
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PyAPI_DATA(int) _Py_CheckInterval; |
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/* Interface for threads. |
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77 |
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A module that plans to do a blocking system call (or something else |
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that lasts a long time and doesn't touch Python data) can allow other |
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threads to run as follows: |
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...preparations here... |
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Py_BEGIN_ALLOW_THREADS |
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...blocking system call here... |
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Py_END_ALLOW_THREADS |
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...interpret result here... |
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87 |
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The Py_BEGIN_ALLOW_THREADS/Py_END_ALLOW_THREADS pair expands to a |
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{}-surrounded block. |
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To leave the block in the middle (e.g., with return), you must insert |
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a line containing Py_BLOCK_THREADS before the return, e.g. |
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if (...premature_exit...) { |
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Py_BLOCK_THREADS |
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PyErr_SetFromErrno(PyExc_IOError); |
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return NULL; |
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} |
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98 |
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An alternative is: |
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100 |
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Py_BLOCK_THREADS |
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if (...premature_exit...) { |
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PyErr_SetFromErrno(PyExc_IOError); |
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return NULL; |
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105 |
} |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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106 |
Py_UNBLOCK_THREADS |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
107 |
|
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Initial QEMU (symbian-qemu-0.9.1-12) import
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108 |
For convenience, that the value of 'errno' is restored across |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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109 |
Py_END_ALLOW_THREADS and Py_BLOCK_THREADS. |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
110 |
|
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Initial QEMU (symbian-qemu-0.9.1-12) import
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111 |
WARNING: NEVER NEST CALLS TO Py_BEGIN_ALLOW_THREADS AND |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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112 |
Py_END_ALLOW_THREADS!!! |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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113 |
|
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Initial QEMU (symbian-qemu-0.9.1-12) import
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114 |
The function PyEval_InitThreads() should be called only from |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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115 |
initthread() in "threadmodule.c". |
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116 |
|
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Initial QEMU (symbian-qemu-0.9.1-12) import
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117 |
Note that not yet all candidates have been converted to use this |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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118 |
mechanism! |
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119 |
*/ |
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120 |
|
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121 |
PyAPI_FUNC(PyThreadState *) PyEval_SaveThread(void); |
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122 |
PyAPI_FUNC(void) PyEval_RestoreThread(PyThreadState *); |
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123 |
|
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124 |
#ifdef WITH_THREAD |
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125 |
|
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126 |
PyAPI_FUNC(int) PyEval_ThreadsInitialized(void); |
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127 |
PyAPI_FUNC(void) PyEval_InitThreads(void); |
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128 |
PyAPI_FUNC(void) PyEval_AcquireLock(void); |
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129 |
PyAPI_FUNC(void) PyEval_ReleaseLock(void); |
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130 |
PyAPI_FUNC(void) PyEval_AcquireThread(PyThreadState *tstate); |
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131 |
PyAPI_FUNC(void) PyEval_ReleaseThread(PyThreadState *tstate); |
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132 |
PyAPI_FUNC(void) PyEval_ReInitThreads(void); |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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133 |
|
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Initial QEMU (symbian-qemu-0.9.1-12) import
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134 |
#define Py_BEGIN_ALLOW_THREADS { \ |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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135 |
PyThreadState *_save; \ |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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136 |
_save = PyEval_SaveThread(); |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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137 |
#define Py_BLOCK_THREADS PyEval_RestoreThread(_save); |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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|
138 |
#define Py_UNBLOCK_THREADS _save = PyEval_SaveThread(); |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
139 |
#define Py_END_ALLOW_THREADS PyEval_RestoreThread(_save); \ |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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140 |
} |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
141 |
|
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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|
142 |
#else /* !WITH_THREAD */ |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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|
143 |
|
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
144 |
#define Py_BEGIN_ALLOW_THREADS { |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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|
145 |
#define Py_BLOCK_THREADS |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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|
146 |
#define Py_UNBLOCK_THREADS |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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|
147 |
#define Py_END_ALLOW_THREADS } |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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|
148 |
|
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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|
149 |
#endif /* !WITH_THREAD */ |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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|
150 |
|
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
151 |
PyAPI_FUNC(int) _PyEval_SliceIndex(PyObject *, Py_ssize_t *); |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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|
152 |
|
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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|
153 |
|
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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|
154 |
#ifdef __cplusplus |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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155 |
} |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
156 |
#endif |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
157 |
#endif /* !Py_CEVAL_H */ |