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Revise the interface to the profiling and tracing support for the

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Python interpreter.

This change adds two new C-level APIs:  PyEval_SetProfile() and
PyEval_SetTrace().  These can be used to install profile and trace
functions implemented in C, which can operate at much higher speeds
than Python-based functions.  The overhead for calling a C-based
profile function is a very small fraction of a percent of the overhead
involved in calling a Python-based function.

The machinery required to call a Python-based profile or trace
function been moved to sysmodule.c, where sys.setprofile() and
sys.setprofile() simply become users of the new interface.
This commit is contained in:
Fred Drake 2001-06-27 19:18:03 +00:00
parent 8f4558583f
commit 55fb6e0371
2 changed files with 16 additions and 2 deletions
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15
Include/pystate.h
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@ -31,6 +31,15 @@ typedef struct _is {
struct _frame; /* Avoid including frameobject.h */
/* Py_tracefunc return -1 when raising an exception, or 0 for success. */
typedef int (*Py_tracefunc)(PyObject *, struct _frame *, int, PyObject *);
/* The following values are used for 'what' for tracefunc functions: */
#define PyTrace_CALL 0
#define PyTrace_EXCEPTION 1
#define PyTrace_LINE 2
#define PyTrace_RETURN 3
typedef struct _ts {
struct _ts *next;
@ -41,8 +50,10 @@ typedef struct _ts {
int ticker;
int tracing;
PyObject *sys_profilefunc;
PyObject *sys_tracefunc;
Py_tracefunc c_profilefunc;
Py_tracefunc c_tracefunc;
PyObject *c_profileobj;
PyObject *c_traceobj;
PyObject *curexc_type;
PyObject *curexc_value;