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.
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_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);
diff --git a/Include/pystate.h b/Include/pystate.h
index 27ffe32..d5e2e1f 100644
--- a/Include/pystate.h
+++ b/Include/pystate.h
@@ -31,6 +31,15 @@
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 @@
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;