2b2b25b878
This should make it easier to add new options, and to add options that are complex. For example, I want to modify the behavior of record_allocs_file so that it also enables record_allocs to a default state. Test: All unit tests pass. Test: Enable the backtrace option and restart. Change-Id: Idf5cdeed06ade3bc2c8ae39d228734bf65209b4f
140 lines
4.5 KiB
C++
140 lines
4.5 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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#include <pthread.h>
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#include <stdint.h>
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#include <stdlib.h>
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#include <algorithm>
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#include <vector>
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#include <private/ScopedPthreadMutexLocker.h>
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#include "backtrace.h"
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#include "BacktraceData.h"
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#include "Config.h"
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#include "DebugData.h"
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#include "debug_disable.h"
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#include "debug_log.h"
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#include "malloc_debug.h"
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#include "TrackData.h"
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TrackData::TrackData(DebugData* debug_data) : OptionData(debug_data) {
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}
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void TrackData::GetList(std::vector<const Header*>* list) {
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for (const auto& header : headers_) {
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list->push_back(header);
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}
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// Sort by the size of the allocation.
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std::sort(list->begin(), list->end(), [](const Header* a, const Header* b) {
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if (a->size == b->size) return a < b;
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return a->size > b->size;
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});
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}
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void TrackData::Add(const Header* header, bool backtrace_found) {
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pthread_mutex_lock(&mutex_);
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if (backtrace_found) {
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total_backtrace_allocs_++;
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}
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headers_.insert(header);
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pthread_mutex_unlock(&mutex_);
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}
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void TrackData::Remove(const Header* header, bool backtrace_found) {
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pthread_mutex_lock(&mutex_);
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headers_.erase(header);
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if (backtrace_found) {
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total_backtrace_allocs_--;
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}
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pthread_mutex_unlock(&mutex_);
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}
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bool TrackData::Contains(const Header* header) {
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pthread_mutex_lock(&mutex_);
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bool found = headers_.count(header);
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pthread_mutex_unlock(&mutex_);
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return found;
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}
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void TrackData::DisplayLeaks() {
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std::vector<const Header*> list;
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GetList(&list);
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size_t track_count = 0;
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for (const auto& header : list) {
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error_log("+++ %s leaked block of size %zu at %p (leak %zu of %zu)", getprogname(),
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header->real_size(), debug_->GetPointer(header), ++track_count, list.size());
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if (debug_->config().options() & BACKTRACE) {
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BacktraceHeader* back_header = debug_->GetAllocBacktrace(header);
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if (back_header->num_frames > 0) {
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error_log("Backtrace at time of allocation:");
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backtrace_log(&back_header->frames[0], back_header->num_frames);
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}
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}
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g_dispatch->free(header->orig_pointer);
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}
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}
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void TrackData::GetInfo(uint8_t** info, size_t* overall_size, size_t* info_size,
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size_t* total_memory, size_t* backtrace_size) {
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ScopedPthreadMutexLocker scoped(&mutex_);
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if (headers_.size() == 0 || total_backtrace_allocs_ == 0) {
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return;
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}
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*backtrace_size = debug_->config().backtrace_frames();
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*info_size = sizeof(size_t) * 2 + sizeof(uintptr_t) * *backtrace_size;
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*info = reinterpret_cast<uint8_t*>(g_dispatch->calloc(*info_size, total_backtrace_allocs_));
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if (*info == nullptr) {
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return;
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}
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*overall_size = *info_size * total_backtrace_allocs_;
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std::vector<const Header*> list;
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GetList(&list);
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uint8_t* data = *info;
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size_t num_allocations = 1;
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for (const auto& header : list) {
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BacktraceHeader* back_header = debug_->GetAllocBacktrace(header);
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if (back_header->num_frames > 0) {
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memcpy(data, &header->size, sizeof(size_t));
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memcpy(&data[sizeof(size_t)], &num_allocations, sizeof(size_t));
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memcpy(&data[2 * sizeof(size_t)], &back_header->frames[0],
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back_header->num_frames * sizeof(uintptr_t));
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*total_memory += header->real_size();
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data += *info_size;
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}
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}
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}
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