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Patches for (two forms of) optional dynamic execution profiling -- 

i.e., counting opcode frequencies, or (with DXPAIRS defined) opcode
pair frequencies.  Define DYNAMIC_EXECUTION_PROFILE on the command
line (for this file and for sysmodule.c) to enable.
This commit is contained in:
Guido van Rossum 1997-01-24 13:49:28 +00:00
parent 8c5df06ec7
commit 950361c6ca
1 changed files with 68 additions and 0 deletions
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68
Python/ceval.c
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@ -103,6 +103,17 @@ static int exec_statement PROTO((object *, object *, object *));
static object *find_from_args PROTO((frameobject *, int));
/* Dynamic execution profile */
#ifdef DYNAMIC_EXECUTION_PROFILE
#ifdef DXPAIRS
static long dxpairs[257][256];
#define dxp dxpairs[256]
#else
static long dxp[256];
#endif
#endif
/* Pointer to current frame, used to link new frames to */
static frameobject *current_frame;
@ -315,6 +326,9 @@ eval_code2(co, globals, locals,
int defcount;
object *owner;
{
#ifdef DXPAIRS
int lastopcode = 0;
#endif
register unsigned char *next_instr;
register int opcode = 0; /* Current opcode */
register int oparg = 0; /* Current opcode argument, if any */
@ -592,6 +606,13 @@ eval_code2(co, globals, locals,
opcode = NEXTOP();
if (HAS_ARG(opcode))
oparg = NEXTARG();
#ifdef DYNAMIC_EXECUTION_PROFILE
#ifdef DXPAIRS
dxpairs[lastopcode][opcode]++;
lastopcode = opcode;
#endif
dxp[opcode]++;
#endif
#ifdef LLTRACE
/* Instruction tracing */
@ -2961,3 +2982,50 @@ find_from_args(f, nexti)
return list;
}
#ifdef DYNAMIC_EXECUTION_PROFILE
PyObject *
getarray(a)
long a[256];
{
int i;
PyObject *l = PyList_New(256);
if (l == NULL) return NULL;
for (i = 0; i < 256; i++) {
PyObject *x = PyInt_FromLong(a[i]);
if (x == NULL) {
Py_DECREF(l);
return NULL;
}
PyList_SetItem(l, i, x);
}
for (i = 0; i < 256; i++)
a[i] = 0;
return l;
}
PyObject *
_Py_GetDXProfile(self, args)
PyObject *self, *args;
{
#ifndef DXPAIRS
return getarray(dxp);
#else
int i;
PyObject *l = PyList_New(257);
if (l == NULL) return NULL;
for (i = 0; i < 257; i++) {
PyObject *x = getarray(dxpairs[i]);
if (x == NULL) {
Py_DECREF(l);
return NULL;
}
PyList_SetItem(l, i, x);
}
return l;
#endif
}
#endif