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/*
+----------------------------------------------------------------------+
| Zend Engine |
+----------------------------------------------------------------------+
| Copyright (c) Zend Technologies Ltd. (http://www.zend.com) |
+----------------------------------------------------------------------+
| This source file is subject to version 2.00 of the Zend license, |
| that is bundled with this package in the file LICENSE, and is |
| available through the world-wide-web at the following url: |
| http://www.zend.com/license/2_00.txt. |
| If you did not receive a copy of the Zend license and are unable to |
| obtain it through the world-wide-web, please send a note to |
| license@zend.com so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
| Authors: Dmitry Stogov <dmitry@php.net> |
+----------------------------------------------------------------------+
*/
#include "zend_sort.h"
#define VM_TRACE(op) zend_vm_trace(#op, sizeof(#op)-1);
#define VM_TRACE_START() zend_vm_trace_init();
#define VM_TRACE_END() zend_vm_trace_finish();
static HashTable vm_trace_ht;
static void zend_vm_trace(const char *op, size_t op_len)
{
static const char *last = NULL;
static size_t last_len = 0;
char buf[256];
size_t len;
zval tmp, *zv;
if (EXPECTED(last)) {
len = last_len + 1 + op_len;
memcpy(buf, last, last_len);
buf[last_len] = ' ';
memcpy(buf + last_len + 1, op, op_len + 1);
zv = zend_hash_str_find(&vm_trace_ht, buf, len);
if (EXPECTED(zv)) {
if (EXPECTED(Z_LVAL_P(zv) < ZEND_LONG_MAX)) {
Z_LVAL_P(zv)++;
}
} else {
ZVAL_LONG(&tmp, 1);
zend_hash_str_add_new(&vm_trace_ht, buf, len, &tmp);
}
}
last = op;
last_len = op_len;
}
static int zend_vm_trace_compare(const Bucket *p1, const Bucket *p2)
{
if (Z_LVAL(p1->val) < Z_LVAL(p2->val)) {
return 1;
} else if (Z_LVAL(p1->val) > Z_LVAL(p2->val)) {
return -1;
} else {
return 0;
}
}
static void zend_vm_trace_finish(void)
{
zend_string *key;
zval *val;
FILE *f;
f = fopen("zend_vm_trace.log", "w+");
if (f) {
zend_hash_sort(&vm_trace_ht, (compare_func_t)zend_vm_trace_compare, 0);
ZEND_HASH_FOREACH_STR_KEY_VAL(&vm_trace_ht, key, val) {
fprintf(f, "%s "ZEND_LONG_FMT"\n", ZSTR_VAL(key), Z_LVAL_P(val));
} ZEND_HASH_FOREACH_END();
fclose(f);
}
zend_hash_destroy(&vm_trace_ht);
}
static void zend_vm_trace_init(void)
{
FILE *f;
zend_hash_init(&vm_trace_ht, 0, NULL, NULL, 1);
f = fopen("zend_vm_trace.log", "r");
if (f) {
char buf[256];
size_t len;
zval tmp;
while (!feof(f)) {
if (fgets(buf, sizeof(buf)-1, f)) {
len = strlen(buf);
while (len > 0 && buf[len-1] <= ' ') {
len--;
buf[len] = 0;
}
while (len > 0 && buf[len-1] >= '0' && buf[len-1] <= '9') {
len--;
}
if (len > 1) {
buf[len-1] = 0;
ZVAL_LONG(&tmp, ZEND_STRTOL(buf + len, NULL, 10));
zend_hash_str_add(&vm_trace_ht, buf, len - 1, &tmp);
}
}
}
fclose(f);
}
}