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Close #14232: catch mmap() failure in new_arena() of obmalloc

This commit is contained in:
Victor Stinner 2012-03-10 00:21:44 +01:00
parent 28393828e2
commit ba108823b6
1 changed files with 8 additions and 3 deletions
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11
Objects/obmalloc.c
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@ -540,6 +540,8 @@ new_arena(void)
{
struct arena_object* arenaobj;
uint excess; /* number of bytes above pool alignment */
void *address;
int err;
#ifdef PYMALLOC_DEBUG
if (Py_GETENV("PYTHONMALLOCSTATS"))
@ -593,12 +595,14 @@ new_arena(void)
unused_arena_objects = arenaobj->nextarena;
assert(arenaobj->address == 0);
#ifdef ARENAS_USE_MMAP
arenaobj->address = (uptr)mmap(NULL, ARENA_SIZE, PROT_READ|PROT_WRITE,
address = mmap(NULL, ARENA_SIZE, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_ANONYMOUS, -1, 0);
err = (address == MAP_FAILED);
#else
arenaobj->address = (uptr)malloc(ARENA_SIZE);
address = malloc(ARENA_SIZE);
err = (address == 0);
#endif
if (arenaobj->address == 0) {
if (err) {
/* The allocation failed: return NULL after putting the
* arenaobj back.
*/
@ -606,6 +610,7 @@ new_arena(void)
unused_arena_objects = arenaobj;
return NULL;
}
arenaobj->address = (uptr)address;
++narenas_currently_allocated;
#ifdef PYMALLOC_DEBUG