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SmartPtr: Support detect memory leak by valgrind. v6.0.132 (#4102)

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1. Support detect memory leak by valgrind.
2. Free the http handler entry.
3. Free the stack of ST.

---

Co-authored-by: Jacob Su <suzp1984@gmail.com>
This commit is contained in:
Winlin 2024-06-29 11:16:32 +08:00 • committed by GitHub
parent ea7e2c2849
commit 7ab012c60f
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GPG key ID: B5690EEEBB952194
18 changed files with 286 additions and 69 deletions
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31
trunk/3rdparty/st-srs/stk.c vendored
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@ -57,13 +57,15 @@ __thread int _st_num_free_stacks = 0;
__thread int _st_randomize_stacks = 0;
static char *_st_new_stk_segment(int size);
static void _st_delete_stk_segment(char *vaddr, int size);
_st_stack_t *_st_stack_new(int stack_size)
{
_st_clist_t *qp;
_st_stack_t *ts;
int extra;
#ifdef MD_CACHE_STACK
for (qp = _st_free_stacks.next; qp != &_st_free_stacks; qp = qp->next) {
ts = _ST_THREAD_STACK_PTR(qp);
if (ts->stk_size >= stack_size) {
@ -75,11 +77,31 @@ _st_stack_t *_st_stack_new(int stack_size)
return ts;
}
}
#endif
extra = _st_randomize_stacks ? _ST_PAGE_SIZE : 0;
#ifndef MD_CACHE_STACK
for (qp = _st_free_stacks.next; qp != &_st_free_stacks;) {
ts = _ST_THREAD_STACK_PTR(qp);
// Before qp is freed, move to next one, because the qp will be freed when free the ts.
qp = qp->next;
ST_REMOVE_LINK(&ts->links);
_st_num_free_stacks--;
#if defined(DEBUG) && !defined(MD_NO_PROTECT)
mprotect(ts->vaddr, REDZONE, PROT_READ | PROT_WRITE);
mprotect(ts->stk_top + extra, REDZONE, PROT_READ | PROT_WRITE);
#endif
_st_delete_stk_segment(ts->vaddr, ts->vaddr_size);
free(ts);
}
#endif
/* Make a new thread stack object. */
if ((ts = (_st_stack_t *)calloc(1, sizeof(_st_stack_t))) == NULL)
return NULL;
extra = _st_randomize_stacks ? _ST_PAGE_SIZE : 0;
ts->vaddr_size = stack_size + 2*REDZONE + extra;
ts->vaddr = _st_new_stk_segment(ts->vaddr_size);
if (!ts->vaddr) {
@ -114,7 +136,7 @@ void _st_stack_free(_st_stack_t *ts)
{
if (!ts)
return;
/* Put the stack on the free list */
ST_APPEND_LINK(&ts->links, _st_free_stacks.prev);
_st_num_free_stacks++;
@ -152,8 +174,6 @@ static char *_st_new_stk_segment(int size)
}
/* Not used */
#if 0
void _st_delete_stk_segment(char *vaddr, int size)
{
#ifdef MALLOC_STACK
@ -162,7 +182,6 @@ void _st_delete_stk_segment(char *vaddr, int size)
(void) munmap(vaddr, size);
#endif
}
#endif
int st_randomize_stacks(int on)
{