Michael Lotz
081ff2db28
keeping all returned heap memory in the 0xdeadbeef state (including the first sizeof(void *) bytes otherwise for the free list). While wasting a lot of memory it allows you to rely on 0xdeadbeef being always present as no future allocation will reuse the freed memory block. * Also added heap_debug_malloc_with_guard_page() which is intended to allocate a memory block so it is aligned that the start of invalid memory past the allocation is in an unmapped guard page. However the kernel backend that would guarantee this is not yet implemented, so right now this works only by chance if no other area happens to be allocated exactly past the created one. With a very specifc suspicion you can put that one allocation you get to good use though. It causes a crash when accessing memory past the allocation size so you actually get a backtrace from where the access happened instead of only after freeing/wall checking. git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@35478 a95241bf-73f2-0310-859d-f6bbb57e9c96
32 lines
725 B
C
32 lines
725 B
C
/*
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* Copyright 2010, Haiku Inc. All Rights Reserved.
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* Distributed under the terms of the MIT License.
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*/
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#ifndef MALLOC_DEBUG_H
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#define MALLOC_DEBUG_H
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#include <OS.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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status_t heap_debug_start_wall_checking(int msInterval);
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status_t heap_debug_stop_wall_checking();
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void heap_debug_set_memory_reuse(bool enabled);
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void heap_debug_set_paranoid_validation(bool enabled);
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void heap_debug_validate_heaps();
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void heap_debug_validate_walls();
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void heap_debug_dump_allocations(bool statsOnly, thread_id thread);
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void heap_debug_dump_heaps(bool dumpAreas, bool dumpBins);
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void *heap_debug_malloc_with_guard_page(size_t size);
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#ifdef __cplusplus
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}
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#endif
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#endif /* MALLOC_DEBUG_H */
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