oslib-posix.c (186c0ab9b98d90642f37a629b1ff520cbfd06394) oslib-posix.c (038adc2f5850e32019bda06c559d0301be436eae)
1/*
2 * os-posix-lib.c
3 *
4 * Copyright (c) 2003-2008 Fabrice Bellard
5 * Copyright (c) 2010 Red Hat, Inc.
6 *
7 * QEMU library functions on POSIX which are shared between QEMU and
8 * the QEMU tools.

--- 603 unchanged lines hidden (view full) ---

612
613void *qemu_alloc_stack(size_t *sz)
614{
615 void *ptr, *guardpage;
616 int flags;
617#ifdef CONFIG_DEBUG_STACK_USAGE
618 void *ptr2;
619#endif
1/*
2 * os-posix-lib.c
3 *
4 * Copyright (c) 2003-2008 Fabrice Bellard
5 * Copyright (c) 2010 Red Hat, Inc.
6 *
7 * QEMU library functions on POSIX which are shared between QEMU and
8 * the QEMU tools.

--- 603 unchanged lines hidden (view full) ---

612
613void *qemu_alloc_stack(size_t *sz)
614{
615 void *ptr, *guardpage;
616 int flags;
617#ifdef CONFIG_DEBUG_STACK_USAGE
618 void *ptr2;
619#endif
620 size_t pagesz = getpagesize();
620 size_t pagesz = qemu_real_host_page_size;
621#ifdef _SC_THREAD_STACK_MIN
622 /* avoid stacks smaller than _SC_THREAD_STACK_MIN */
623 long min_stack_sz = sysconf(_SC_THREAD_STACK_MIN);
624 *sz = MAX(MAX(min_stack_sz, 0), *sz);
625#endif
626 /* adjust stack size to a multiple of the page size */
627 *sz = ROUND_UP(*sz, pagesz);
628 /* allocate one extra page for the guard page */

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674#endif
675
676void qemu_free_stack(void *stack, size_t sz)
677{
678#ifdef CONFIG_DEBUG_STACK_USAGE
679 unsigned int usage;
680 void *ptr;
681
621#ifdef _SC_THREAD_STACK_MIN
622 /* avoid stacks smaller than _SC_THREAD_STACK_MIN */
623 long min_stack_sz = sysconf(_SC_THREAD_STACK_MIN);
624 *sz = MAX(MAX(min_stack_sz, 0), *sz);
625#endif
626 /* adjust stack size to a multiple of the page size */
627 *sz = ROUND_UP(*sz, pagesz);
628 /* allocate one extra page for the guard page */

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674#endif
675
676void qemu_free_stack(void *stack, size_t sz)
677{
678#ifdef CONFIG_DEBUG_STACK_USAGE
679 unsigned int usage;
680 void *ptr;
681
682 for (ptr = stack + getpagesize(); ptr < stack + sz;
682 for (ptr = stack + qemu_real_host_page_size; ptr < stack + sz;
683 ptr += sizeof(uint32_t)) {
684 if (*(uint32_t *)ptr != 0xdeadbeaf) {
685 break;
686 }
687 }
688 usage = sz - (uintptr_t) (ptr - stack);
689 if (usage > max_stack_usage) {
690 error_report("thread %d max stack usage increased from %u to %u",

--- 38 unchanged lines hidden --- 		683 ptr += sizeof(uint32_t)) {
684 if (*(uint32_t *)ptr != 0xdeadbeaf) {
685 break;
686 }
687 }
688 usage = sz - (uintptr_t) (ptr - stack);
689 if (usage > max_stack_usage) {
690 error_report("thread %d max stack usage increased from %u to %u",

--- 38 unchanged lines hidden ---