Mercurial > cpython-lru_cache-weakref
diff Mac/Python/macglue.c @ 16437:679f826b24ca legacy-trunk
On MacOSX StackSpace() may lie because it doesn't know about the stack rlimit. For now we set a hard limit of 256K (default rlimit is 512K).
| author | Jack Jansen <jack.jansen@cwi.nl> |
|---|---|
| date | Fri, 02 Feb 2001 22:40:28 +0000 |
| parents | 3b643653e078 |
| children | 9ce9e0342cc1 |
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--- a/Mac/Python/macglue.c Fri Feb 02 21:24:51 2001 +0000 +++ b/Mac/Python/macglue.c Fri Feb 02 22:40:28 2001 +0000 @@ -100,6 +100,16 @@ #endif #endif +#if TARGET_API_MAC_CARBON +/* +** On MacOSX StackSpace() lies: it gives the distance from heap end to stack pointer, +** but the stack cannot grow that far due to rlimit values. We cannot get at this value +** from Carbon, so we set a maximum to the stack here that is based on the default +** stack limit of 512K. +*/ +#define MAXIMUM_STACK_SIZE (256*1024) +#endif + /* ** We have to be careful, since we can't handle ** things like updates (and they'll keep coming back if we don't @@ -429,8 +439,15 @@ static char *sentinel = 0; static PyThreadState *thread_for_sentinel = 0; - if ( sentinel == 0 ) { - sentinel = &here - StackSpace() + MINIMUM_STACK_SIZE; + if ( sentinel == 0 ) { + unsigned long stackspace = StackSpace(); + +#ifdef MAXIMUM_STACK_SIZE + /* See the comment at the definition */ + if ( stackspace > MAXIMUM_STACK_SIZE ) + stackspace = MAXIMUM_STACK_SIZE; +#endif + sentinel = &here - stackspace + MINIMUM_STACK_SIZE; } if ( thread_for_sentinel == 0 ) { thread_for_sentinel = PyThreadState_Get();