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fix segfault in "out of memory" situation

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This commit is contained in:
Igor Sysoev 2006-12-18 20:46:49 +00:00
parent c690675ed1
commit 84bab05c55
1 changed files with 10 additions and 6 deletions
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16
src/core/ngx_palloc.c
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@ -85,14 +85,17 @@ void *
ngx_palloc(ngx_pool_t *pool, size_t size)
{
u_char *m;
ngx_pool_t *p, *n;
ngx_pool_t *p, *n, *current;
ngx_pool_large_t *large;
if (size <= (size_t) NGX_MAX_ALLOC_FROM_POOL
&& size <= (size_t) (pool->end - (u_char *) pool)
- (size_t) ngx_align_ptr(sizeof(ngx_pool_t), NGX_ALIGNMENT))
{
for (p = pool->current; /* void */ ; p = p->next) {
p = pool->current;
current = p;
for ( ;; ) {
if (size < sizeof(int) || (size & 1)) {
m = p->last;
@ -108,12 +111,15 @@ ngx_palloc(ngx_pool_t *pool, size_t size)
}
if ((size_t) (p->end - m) < NGX_ALIGNMENT) {
pool->current = p->next;
current = p->next;
}
if (p->next == NULL) {
break;
}
p = p->next;
pool->current = current;
}
/* allocate a new pool block */
@ -123,9 +129,7 @@ ngx_palloc(ngx_pool_t *pool, size_t size)
return NULL;
}
if (pool->current == NULL) {
pool->current = n;
}
pool->current = current ? current : n;
p->next = n;
m = ngx_align_ptr(n->last, NGX_ALIGNMENT);