Mercurial > cpython-lru_cache-weakref
diff Python/ceval.c @ 5049:946b2b2a7622 legacy-trunk
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.
| author | Guido van Rossum <guido@python.org> |
|---|---|
| date | Fri, 24 Jan 1997 13:49:28 +0000 |
| parents | fde73467b584 |
| children | 8579e3441d9b |
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--- a/Python/ceval.c Fri Jan 24 04:19:24 1997 +0000 +++ b/Python/ceval.c Fri Jan 24 13:49:28 1997 +0000 @@ -103,6 +103,17 @@ 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 @@ 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 @@ 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 @@ 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