mirror of
https://github.com/php/php-src.git
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113 lines
3.1 KiB
C
113 lines
3.1 KiB
C
/*
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+----------------------------------------------------------------------+
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| Zend Engine |
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+----------------------------------------------------------------------+
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| Copyright (c) 1998-2018 Zend Technologies Ltd. (http://www.zend.com) |
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+----------------------------------------------------------------------+
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| This source file is subject to version 2.00 of the Zend license, |
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| that is bundled with this package in the file LICENSE, and is |
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| available through the world-wide-web at the following url: |
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| http://www.zend.com/license/2_00.txt. |
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| If you did not receive a copy of the Zend license and are unable to |
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| obtain it through the world-wide-web, please send a note to |
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| license@zend.com so we can mail you a copy immediately. |
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+----------------------------------------------------------------------+
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| Authors: Dmitry Stogov <dmitry@zend.com> |
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+----------------------------------------------------------------------+
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*/
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#include "zend_sort.h"
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#define VM_TRACE(op) zend_vm_trace(#op, sizeof(#op)-1);
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#define VM_TRACE_START() zend_vm_trace_init();
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#define VM_TRACE_END() zend_vm_trace_finish();
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static HashTable vm_trace_ht;
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static void zend_vm_trace(const char *op, size_t op_len)
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{
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static const char *last = NULL;
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static size_t last_len = 0;
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char buf[256];
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size_t len;
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zval tmp, *zv;
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if (EXPECTED(last)) {
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len = last_len + 1 + op_len;
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memcpy(buf, last, last_len);
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buf[last_len] = ' ';
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memcpy(buf + last_len + 1, op, op_len + 1);
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zv = zend_hash_str_find(&vm_trace_ht, buf, len);
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if (EXPECTED(zv)) {
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if (EXPECTED(Z_LVAL_P(zv) < ZEND_LONG_MAX)) {
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Z_LVAL_P(zv)++;
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}
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} else {
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ZVAL_LONG(&tmp, 1);
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zend_hash_str_add_new(&vm_trace_ht, buf, len, &tmp);
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}
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}
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last = op;
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last_len = op_len;
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}
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static int zend_vm_trace_compare(const Bucket *p1, const Bucket *p2)
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{
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if (Z_LVAL(p1->val) < Z_LVAL(p2->val)) {
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return 1;
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} else if (Z_LVAL(p1->val) > Z_LVAL(p2->val)) {
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return -1;
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} else {
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return 0;
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}
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}
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static void zend_vm_trace_finish(void)
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{
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zend_string *key;
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zval *val;
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FILE *f;
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f = fopen("zend_vm_trace.log", "w+");
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if (f) {
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zend_hash_sort(&vm_trace_ht, (compare_func_t)zend_vm_trace_compare, 0);
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ZEND_HASH_FOREACH_STR_KEY_VAL(&vm_trace_ht, key, val) {
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fprintf(f, "%s "ZEND_LONG_FMT"\n", ZSTR_VAL(key), Z_LVAL_P(val));
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} ZEND_HASH_FOREACH_END();
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fclose(f);
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}
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zend_hash_destroy(&vm_trace_ht);
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}
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static void zend_vm_trace_init(void)
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{
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FILE *f;
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zend_hash_init(&vm_trace_ht, 0, NULL, NULL, 1);
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f = fopen("zend_vm_trace.log", "r");
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if (f) {
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char buf[256];
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size_t len;
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zval tmp;
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while (!feof(f)) {
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if (fgets(buf, sizeof(buf)-1, f)) {
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len = strlen(buf);
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while (len > 0 && buf[len-1] <= ' ') {
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len--;
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buf[len] = 0;
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}
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while (len > 0 && buf[len-1] >= '0' && buf[len-1] <= '9') {
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len--;
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}
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if (len > 1) {
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buf[len-1] = 0;
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ZVAL_LONG(&tmp, ZEND_STRTOL(buf + len, NULL, 10));
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zend_hash_str_add(&vm_trace_ht, buf, len - 1, &tmp);
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}
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}
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}
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fclose(f);
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}
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}
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