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Lines 555-564
START_THREAD_DEFN
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| 555 |
size_t pagesize_m1 = __getpagesize () - 1; |
555 |
size_t pagesize_m1 = __getpagesize () - 1; |
| 556 |
#ifdef _STACK_GROWS_DOWN |
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#ifdef _STACK_GROWS_DOWN |
| 557 |
char *sp = CURRENT_STACK_FRAME; |
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char *sp = CURRENT_STACK_FRAME; |
| 558 |
size_t freesize = (sp - (char *) pd->stackblock) & ~pagesize_m1; |
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char *freeblock = (char *) pd->stackblock; |
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size_t freesize = (sp - freeblock) & ~pagesize_m1; |
| 559 |
assert (freesize < pd->stackblock_size); |
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assert (freesize < pd->stackblock_size); |
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# ifdef __ia64__ |
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if (freesize > PTHREAD_STACK_MIN) |
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if (freesize > PTHREAD_STACK_MIN) |
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__madvise (pd->stackblock, freesize - PTHREAD_STACK_MIN, MADV_DONTNEED); |
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{ |
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/* On ia64 stack grows both ways! |
| 565 |
- normal "sp" stack (stack for local variables) grows down |
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- register stack "bsp" grows up from the opposite end of stack block |
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| 568 |
Thus we leave PTHREAD_STACK_MIN bytes from stack block top |
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and leave same PTHREAD_STACK_MIN at stack block bottom. */ |
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freeblock += PTHREAD_STACK_MIN; |
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freesize -= PTHREAD_STACK_MIN; |
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} |
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# endif |
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if (freesize > PTHREAD_STACK_MIN) |
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__madvise (freeblock, freesize - PTHREAD_STACK_MIN, MADV_DONTNEED); |
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#else |
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#else |
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/* Page aligned start of memory to free (higher than or equal |
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/* Page aligned start of memory to free (higher than or equal |
| 564 |
to current sp plus the minimum stack size). */ |
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to current sp plus the minimum stack size). */ |
| 565 |
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