885f3b9cad
- Implemented chk_memalign.
- Fixed a few bugs in leak_memalign.
- Implemented {leak,fill,check,qemu}_malloc_usable_size.
- Make malloc_usable_size update at run time.
- Add malloc_test.cpp as a small set of tests for the
malloc debug routines.
- Fix the qemu routines since it's been broken since it moved to C++.
- Add support for the %u format to the out_vformat in libc_logging.cpp.
This is used by the emulator code.
Tested using the bionic-unit-tests with setprop libc.debug.malloc
set to 1, 5, and 10.
I tested as much as possible on the emulator, but tracing doesn't appear
to be working properly.
Bug: 6143477
Merge change from internal master.
(cherry-picked from commit 3d594c2580)
Change-Id: I4ae00fffba82315a8c283f35893fd554460722fb
115 lines
4.1 KiB
C
115 lines
4.1 KiB
C
/*
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* Copyright (C) 2009 The Android Open Source Project
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/*
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* Contains declarations of types and constants used by malloc leak
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* detection code in both, libc and libc_malloc_debug libraries.
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*/
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#ifndef MALLOC_DEBUG_COMMON_H
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#define MALLOC_DEBUG_COMMON_H
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#include <stdlib.h>
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#include "libc_logging.h"
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#define HASHTABLE_SIZE 1543
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#define BACKTRACE_SIZE 32
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/* flag definitions, currently sharing storage with "size" */
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#define SIZE_FLAG_ZYGOTE_CHILD (1<<31)
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#define SIZE_FLAG_MASK (SIZE_FLAG_ZYGOTE_CHILD)
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#define MAX_SIZE_T (~(size_t)0)
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// This must match the alignment used by dlmalloc.
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#ifndef MALLOC_ALIGNMENT
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#define MALLOC_ALIGNMENT ((size_t)(2 * sizeof(void *)))
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#endif
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// =============================================================================
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// Structures
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// =============================================================================
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struct HashEntry {
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size_t slot;
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HashEntry* prev;
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HashEntry* next;
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size_t numEntries;
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// fields above "size" are NOT sent to the host
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size_t size;
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size_t allocations;
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uintptr_t backtrace[0];
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};
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struct HashTable {
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size_t count;
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HashEntry* slots[HASHTABLE_SIZE];
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};
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/* Entry in malloc dispatch table. */
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typedef void* (*MallocDebugMalloc)(size_t);
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typedef void (*MallocDebugFree)(void*);
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typedef void* (*MallocDebugCalloc)(size_t, size_t);
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typedef void* (*MallocDebugRealloc)(void*, size_t);
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typedef void* (*MallocDebugMemalign)(size_t, size_t);
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typedef size_t (*MallocDebugMallocUsableSize)(const void*);
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struct MallocDebug {
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MallocDebugMalloc malloc;
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MallocDebugFree free;
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MallocDebugCalloc calloc;
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MallocDebugRealloc realloc;
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MallocDebugMemalign memalign;
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MallocDebugMallocUsableSize malloc_usable_size;
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};
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/* Malloc debugging initialization and finalization routines.
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*
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* These routines must be implemented in .so modules that implement malloc
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* debugging. The are is called once per process from malloc_init_impl and
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* malloc_fini_impl respectively.
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*
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* They are implemented in bionic/libc/bionic/malloc_debug_common.c when malloc
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* debugging gets initialized for the process.
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*
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* MallocDebugInit returns:
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* 0 on success, -1 on failure.
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*/
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typedef int (*MallocDebugInit)();
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typedef void (*MallocDebugFini)();
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// =============================================================================
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// log functions
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// =============================================================================
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#define debug_log(format, ...) \
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__libc_format_log(ANDROID_LOG_DEBUG, "malloc_leak_check", (format), ##__VA_ARGS__ )
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#define error_log(format, ...) \
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__libc_format_log(ANDROID_LOG_ERROR, "malloc_leak_check", (format), ##__VA_ARGS__ )
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#define info_log(format, ...) \
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__libc_format_log(ANDROID_LOG_INFO, "malloc_leak_check", (format), ##__VA_ARGS__ )
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#endif // MALLOC_DEBUG_COMMON_H
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