mirror of
https://github.com/python/cpython
synced 2024-10-19 01:44:48 +00:00
9e3ad78444
path (with no profile/trace function) through eval_code2() and eval_frame() avoids several checks. In the common cases of calls, returns, and exception propogation, eval_code2() and eval_frame() used to test two values in the thread-state: the profiling function and the tracing function. With this change, a flag is set in the thread-state if either of these is active, allowing a single check to suffice when both are NULL. This also simplifies the code needed when either function is in use but is already active (to avoid profiling/tracing the profiler/tracer); the flag is set to 0 when the profile/trace code is entered, allowing the same check to suffice for "already in the tracer" for call/return/ exception events.
104 lines
2.3 KiB
C
104 lines
2.3 KiB
C
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/* Thread and interpreter state structures and their interfaces */
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#ifndef Py_PYSTATE_H
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#define Py_PYSTATE_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* State shared between threads */
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struct _ts; /* Forward */
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struct _is; /* Forward */
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typedef struct _is {
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struct _is *next;
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struct _ts *tstate_head;
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PyObject *modules;
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PyObject *sysdict;
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PyObject *builtins;
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int checkinterval;
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} PyInterpreterState;
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/* State unique per thread */
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struct _frame; /* Avoid including frameobject.h */
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/* Py_tracefunc return -1 when raising an exception, or 0 for success. */
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typedef int (*Py_tracefunc)(PyObject *, struct _frame *, int, PyObject *);
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/* The following values are used for 'what' for tracefunc functions: */
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#define PyTrace_CALL 0
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#define PyTrace_EXCEPTION 1
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#define PyTrace_LINE 2
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#define PyTrace_RETURN 3
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typedef struct _ts {
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struct _ts *next;
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PyInterpreterState *interp;
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struct _frame *frame;
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int recursion_depth;
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int ticker;
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int tracing;
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int use_tracing;
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Py_tracefunc c_profilefunc;
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Py_tracefunc c_tracefunc;
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PyObject *c_profileobj;
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PyObject *c_traceobj;
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PyObject *curexc_type;
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PyObject *curexc_value;
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PyObject *curexc_traceback;
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PyObject *exc_type;
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PyObject *exc_value;
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PyObject *exc_traceback;
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PyObject *dict;
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/* XXX signal handlers should also be here */
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} PyThreadState;
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DL_IMPORT(PyInterpreterState *) PyInterpreterState_New(void);
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DL_IMPORT(void) PyInterpreterState_Clear(PyInterpreterState *);
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DL_IMPORT(void) PyInterpreterState_Delete(PyInterpreterState *);
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DL_IMPORT(PyThreadState *) PyThreadState_New(PyInterpreterState *);
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DL_IMPORT(void) PyThreadState_Clear(PyThreadState *);
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DL_IMPORT(void) PyThreadState_Delete(PyThreadState *);
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#ifdef WITH_THREAD
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DL_IMPORT(void) PyThreadState_DeleteCurrent(void);
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#endif
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DL_IMPORT(PyThreadState *) PyThreadState_Get(void);
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DL_IMPORT(PyThreadState *) PyThreadState_Swap(PyThreadState *);
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DL_IMPORT(PyObject *) PyThreadState_GetDict(void);
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/* Variable and macro for in-line access to current thread state */
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extern DL_IMPORT(PyThreadState *) _PyThreadState_Current;
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#ifdef Py_DEBUG
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#define PyThreadState_GET() PyThreadState_Get()
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#else
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#define PyThreadState_GET() (_PyThreadState_Current)
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#endif
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#ifdef __cplusplus
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}
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#endif
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#endif /* !Py_PYSTATE_H */
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