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/* Interface to random parts in ceval.c */
#ifndef Py_CEVAL_H
#define Py_CEVAL_H
#ifdef __cplusplus
extern "C" {
#endif
PyAPI_FUNC(PyObject *) PyEval_EvalCode(PyObject *, PyObject *, PyObject *);
PyAPI_FUNC(PyObject *) PyEval_EvalCodeEx(PyObject *co,
PyObject *globals,
PyObject *locals,
PyObject *const *args, int argc,
PyObject *const *kwds, int kwdc,
PyObject *const *defs, int defc,
PyObject *kwdefs, PyObject *closure);
/* PyEval_CallObjectWithKeywords(), PyEval_CallObject(), PyEval_CallFunction
* and PyEval_CallMethod are deprecated. Since they are officially part of the
* stable ABI (PEP 384), they must be kept for backward compatibility.
* PyObject_Call(), PyObject_CallFunction() and PyObject_CallMethod() are
* recommended to call a callable object.
*/
Py_DEPRECATED(3.9) PyAPI_FUNC(PyObject *) PyEval_CallObjectWithKeywords(
PyObject *callable,
PyObject *args,
PyObject *kwargs);
/* Deprecated since PyEval_CallObjectWithKeywords is deprecated */
#define PyEval_CallObject(callable, arg) \
PyEval_CallObjectWithKeywords(callable, arg, (PyObject *)NULL)
Py_DEPRECATED(3.9) PyAPI_FUNC(PyObject *) PyEval_CallFunction(
PyObject *callable, const char *format, ...);
Py_DEPRECATED(3.9) PyAPI_FUNC(PyObject *) PyEval_CallMethod(
PyObject *obj, const char *name, const char *format, ...);
PyAPI_FUNC(PyObject *) PyEval_GetBuiltins(void);
PyAPI_FUNC(PyObject *) PyEval_GetGlobals(void);
PyAPI_FUNC(PyObject *) PyEval_GetLocals(void);
PyAPI_FUNC(PyFrameObject *) PyEval_GetFrame(void);
PyAPI_FUNC(int) Py_AddPendingCall(int (*func)(void *), void *arg);
PyAPI_FUNC(int) Py_MakePendingCalls(void);
/* Protection against deeply nested recursive calls
In Python 3.0, this protection has two levels:
* normal anti-recursion protection is triggered when the recursion level
exceeds the current recursion limit. It raises a RecursionError, and sets
the "overflowed" flag in the thread state structure. This flag
temporarily *disables* the normal protection; this allows cleanup code
to potentially outgrow the recursion limit while processing the
RecursionError.
* "last chance" anti-recursion protection is triggered when the recursion
level exceeds "current recursion limit + 50". By construction, this
protection can only be triggered when the "overflowed" flag is set. It
means the cleanup code has itself gone into an infinite loop, or the
RecursionError has been mistakingly ignored. When this protection is
triggered, the interpreter aborts with a Fatal Error.
In addition, the "overflowed" flag is automatically reset when the
recursion level drops below "current recursion limit - 50". This heuristic
is meant to ensure that the normal anti-recursion protection doesn't get
disabled too long.
Please note: this scheme has its own limitations. See:
http://mail.python.org/pipermail/python-dev/2008-August/082106.html
for some observations.
*/
PyAPI_FUNC(void) Py_SetRecursionLimit(int);
PyAPI_FUNC(int) Py_GetRecursionLimit(void);
PyAPI_FUNC(int) Py_EnterRecursiveCall(const char *where);
PyAPI_FUNC(void) Py_LeaveRecursiveCall(void);
PyAPI_FUNC(const char *) PyEval_GetFuncName(PyObject *);
PyAPI_FUNC(const char *) PyEval_GetFuncDesc(PyObject *);
PyAPI_FUNC(PyObject *) PyEval_EvalFrame(PyFrameObject *);
PyAPI_FUNC(PyObject *) PyEval_EvalFrameEx(PyFrameObject *f, int exc);
/* Interface for threads.
A module that plans to do a blocking system call (or something else
that lasts a long time and doesn't touch Python data) can allow other
threads to run as follows:
...preparations here...
Py_BEGIN_ALLOW_THREADS
...blocking system call here...
Py_END_ALLOW_THREADS
...interpret result here...
The Py_BEGIN_ALLOW_THREADS/Py_END_ALLOW_THREADS pair expands to a
{}-surrounded block.
To leave the block in the middle (e.g., with return), you must insert
a line containing Py_BLOCK_THREADS before the return, e.g.
if (...premature_exit...) {
Py_BLOCK_THREADS
PyErr_SetFromErrno(PyExc_OSError);
return NULL;
}
An alternative is:
Py_BLOCK_THREADS
if (...premature_exit...) {
PyErr_SetFromErrno(PyExc_OSError);
return NULL;
}
Py_UNBLOCK_THREADS
For convenience, that the value of 'errno' is restored across
Py_END_ALLOW_THREADS and Py_BLOCK_THREADS.
WARNING: NEVER NEST CALLS TO Py_BEGIN_ALLOW_THREADS AND
Py_END_ALLOW_THREADS!!!
Note that not yet all candidates have been converted to use this
mechanism!
*/
PyAPI_FUNC(PyThreadState *) PyEval_SaveThread(void);
PyAPI_FUNC(void) PyEval_RestoreThread(PyThreadState *);
Py_DEPRECATED(3.9) PyAPI_FUNC(int) PyEval_ThreadsInitialized(void);
Py_DEPRECATED(3.9) PyAPI_FUNC(void) PyEval_InitThreads(void);
/* PyEval_AcquireLock() and PyEval_ReleaseLock() are part of stable ABI.
* They will be removed from this header file in the future version.
* But they will be remained in ABI until Python 4.0.
*/
Py_DEPRECATED(3.2) PyAPI_FUNC(void) PyEval_AcquireLock(void);
Py_DEPRECATED(3.2) PyAPI_FUNC(void) PyEval_ReleaseLock(void);
PyAPI_FUNC(void) PyEval_AcquireThread(PyThreadState *tstate);
PyAPI_FUNC(void) PyEval_ReleaseThread(PyThreadState *tstate);
#define Py_BEGIN_ALLOW_THREADS { \
PyThreadState *_save; \
_save = PyEval_SaveThread();
#define Py_BLOCK_THREADS PyEval_RestoreThread(_save);
#define Py_UNBLOCK_THREADS _save = PyEval_SaveThread();
#define Py_END_ALLOW_THREADS PyEval_RestoreThread(_save); \
}
/* Masks and values used by FORMAT_VALUE opcode. */
#define FVC_MASK 0x3
#define FVC_NONE 0x0
#define FVC_STR 0x1
#define FVC_REPR 0x2
#define FVC_ASCII 0x3
#define FVS_MASK 0x4
#define FVS_HAVE_SPEC 0x4
#ifndef Py_LIMITED_API
# define Py_CPYTHON_CEVAL_H
# include "cpython/ceval.h"
# undef Py_CPYTHON_CEVAL_H
#endif
#ifdef __cplusplus
}
#endif
#endif /* !Py_CEVAL_H */