7993b80f89
Included in this change: - Change the tag when a pointer is freed so it's easy to detect if an already freed pointer is being used. - Move the free backtrace out of the header. This backtrace is only used under only some circumstances, so no need to allocate space in all headers for it. - Add new option free_track_backtrace_num_frames to specify how many frames to record when the free occurs. This removes the dependency on the backtrace option to get backtraces. Bug: 26739265 Change-Id: I76f5209507dcf46af67ada162a7cb2bf282116f2
59 lines
2 KiB
C++
59 lines
2 KiB
C++
/*
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* Copyright (C) 2015 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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#ifndef DEBUG_MALLOC_BACKTRACEDATA_H
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#define DEBUG_MALLOC_BACKTRACEDATA_H
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#include <stdint.h>
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#include <private/bionic_macros.h>
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// Forward declarations.
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struct Config;
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class BacktraceData {
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public:
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BacktraceData(const Config& config, size_t* offset);
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virtual ~BacktraceData() = default;
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bool Initialize(const Config& config);
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inline size_t alloc_offset() { return alloc_offset_; }
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bool enabled() { return enabled_; }
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void set_enabled(bool enabled) { enabled_ = enabled; }
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private:
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size_t alloc_offset_ = 0;
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volatile bool enabled_ = false;
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DISALLOW_COPY_AND_ASSIGN(BacktraceData);
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};
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#endif // DEBUG_MALLOC_BACKTRACEDATA_H
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