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core_pe: Aah, got it. Performance from the new cache module are now comparable to the old Cython based one.

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Virgil Dupras 2010-01-30 17:19:40 +01:00
parent cc362deb87
commit cea1ec7641
1 changed files with 22 additions and 29 deletions
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51
core_pe/modules/cache/cache.c vendored
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@ -2,6 +2,7 @@
* Created On: 2010-01-30 * Created On: 2010-01-30
* Copyright 2010 Hardcoded Software (http://www.hardcoded.net) * Copyright 2010 Hardcoded Software (http://www.hardcoded.net)
*/ */
#define PY_SSIZE_T_CLEAN
#include "Python.h" #include "Python.h"
#include "structmember.h" #include "structmember.h"
#include "stdio.h" #include "stdio.h"
@ -11,7 +12,7 @@
* a char, which would in turn require me to buffer my chars around, * a char, which would in turn require me to buffer my chars around,
* making the whole process slower. * making the whole process slower.
*/ */
static inline long static long
xchar_to_long(char c) xchar_to_long(char c)
{ {
if ((c >= 48) && (c <= 57)) { /* 0-9 */ if ((c >= 48) && (c <= 57)) { /* 0-9 */
@ -30,53 +31,45 @@ static PyObject*
cache_string_to_colors(PyObject *self, PyObject *args) cache_string_to_colors(PyObject *self, PyObject *args)
{ {
char *s; char *s;
Py_ssize_t char_count; Py_ssize_t char_count, color_count, i;
PyObject *result; PyObject *result;
int i;
if (!PyArg_ParseTuple(args, "s#", &s, &char_count)) { if (!PyArg_ParseTuple(args, "s#", &s, &char_count)) {
return NULL; return NULL;
} }
result = PyList_New(0); color_count = (char_count / 6);
result = PyList_New(color_count);
if (result == NULL) { if (result == NULL) {
return NULL; return NULL;
} }
char_count = (char_count / 6) * 6; for (i=0; i<color_count; i++) {
for (i=0; i<char_count; i+=6) {
long r, g, b; long r, g, b;
Py_ssize_t ci;
PyObject *color_tuple; PyObject *color_tuple;
PyObject *pi; PyObject *pr, *pg, *pb;
r = (xchar_to_long(s[i]) << 4) + xchar_to_long(s[i+1]); ci = i * 6;
g = (xchar_to_long(s[i+2]) << 4) + xchar_to_long(s[i+3]); r = (xchar_to_long(s[ci]) << 4) + xchar_to_long(s[ci+1]);
b = (xchar_to_long(s[i+4]) << 4) + xchar_to_long(s[i+5]); g = (xchar_to_long(s[ci+2]) << 4) + xchar_to_long(s[ci+3]);
b = (xchar_to_long(s[ci+4]) << 4) + xchar_to_long(s[ci+5]);
color_tuple = PyTuple_New(3); pr = PyInt_FromLong(r);
pi = PyInt_FromLong(r); pg = PyInt_FromLong(g);
if (pi == NULL) { pb = PyInt_FromLong(b);
if (pb == NULL) {
Py_DECREF(result); Py_DECREF(result);
return NULL; return NULL;
} }
PyTuple_SET_ITEM(color_tuple, 0, pi); color_tuple = PyTuple_Pack(3, pr, pg, pb);
pi = PyInt_FromLong(g); if (color_tuple == NULL) {
if (pi == NULL) { Py_DECREF(pr);
Py_DECREF(result); Py_DECREF(pg);
return NULL; Py_DECREF(pb);
}
PyTuple_SET_ITEM(color_tuple, 1, pi);
pi = PyInt_FromLong(b);
if (pi == NULL) {
Py_DECREF(result);
return NULL;
}
PyTuple_SET_ITEM(color_tuple, 2, pi);
if (PyList_Append(result, color_tuple) < 0) {
Py_DECREF(result); Py_DECREF(result);
return NULL; return NULL;
} }
PyList_SET_ITEM(result, i, color_tuple);
} }
return result; return result;