Revise the interface to the profiling and tracing support for the

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.

1 files changed, 3 insertions, 0 deletions

diff --git a/Include/ceval.h b/Include/ceval.h
index 4e6889e..19ac064 100644
--- a/Include/ceval.h
+++ b/Include/ceval.h
@@ -22,6 +22,9 @@ DL_IMPORT(PyObject *) PyEval_CallFunction(PyObject *obj, char *format, ...);
 DL_IMPORT(PyObject *) PyEval_CallMethod(PyObject *obj,
                                         char *methodname, char *format, ...);
 
+DL_IMPORT(void) PyEval_SetProfile(Py_tracefunc, PyObject *);
+DL_IMPORT(void) PyEval_SetTrace(Py_tracefunc, PyObject *);
+
 DL_IMPORT(PyObject *) PyEval_GetBuiltins(void);
 DL_IMPORT(PyObject *) PyEval_GetGlobals(void);
 DL_IMPORT(PyObject *) PyEval_GetLocals(void);