IntenseWebs/nginx
3
0
Fork 0
mirror of https://github.com/nginx/nginx.git synced 2024-12-28 18:01:09 -06:00
Code Issues Packages Projects Releases Wiki Activity

Fixed memory leak on HUP signal when PCRE JIT was used.

Browse Source 
The PCRE JIT compiler uses mmap to allocate memory for its executable codes, so
we have to explicitly call the pcre_free_study() function to free this memory.
This commit is contained in:
Valentin Bartenev 2012-01-30 12:53:57 +00:00
parent 3feafa765f
commit fbf7a0a48a
1 changed files with 54 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

55
src/core/ngx_regex.c
View File

@ -16,6 +16,9 @@ typedef struct {
static void * ngx_libc_cdecl ngx_regex_malloc(size_t size);
static void ngx_libc_cdecl ngx_regex_free(void *p);
#if (NGX_HAVE_PCRE_JIT)
static void ngx_pcre_free_studies(void *data);
#endif
static ngx_int_t ngx_regex_module_init(ngx_cycle_t *cycle);
@ -274,6 +277,41 @@ ngx_regex_free(void *p)
}
#if (NGX_HAVE_PCRE_JIT)
static void
ngx_pcre_free_studies(void *data)
{
ngx_list_t *studies = data;
ngx_uint_t i;
ngx_list_part_t *part;
ngx_regex_elt_t *elts;
part = &studies->part;
elts = part->elts;
for (i = 0 ; /* void */ ; i++) {
if (i >= part->nelts) {
if (part->next == NULL) {
break;
}
part = part->next;
elts = part->elts;
i = 0;
}
if (elts[i].regex->extra != NULL) {
pcre_free_study(elts[i].regex->extra);
}
}
}
#endif
static ngx_int_t
ngx_regex_module_init(ngx_cycle_t *cycle)
{
@ -287,12 +325,27 @@ ngx_regex_module_init(ngx_cycle_t *cycle)
#if (NGX_HAVE_PCRE_JIT)
{
ngx_regex_conf_t *rcf;
ngx_regex_conf_t *rcf;
ngx_pool_cleanup_t *cln;
rcf = (ngx_regex_conf_t *) ngx_get_conf(cycle->conf_ctx, ngx_regex_module);
if (rcf->pcre_jit) {
opt = PCRE_STUDY_JIT_COMPILE;
/*
* The PCRE JIT compiler uses mmap for its executable codes, so we
* have to explicitly call the pcre_free_study() function to free
* this memory.
*/
cln = ngx_pool_cleanup_add(cycle->pool, 0);
if (cln == NULL) {
return NGX_ERROR;
}
cln->handler = ngx_pcre_free_studies;
cln->data = ngx_pcre_studies;
}
}
#endif