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https://github.com/RGBCube/serenity
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2939ad0110
Creating a backtrace from a crashdump already existed as a few standalone functions in CrashDaemon. This patch refactors the code required for this to make it generally usable and moves it to CoreDump::Backtrace, which provides both raw data as well as stringification.
76 lines
2.8 KiB
C++
76 lines
2.8 KiB
C++
/*
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* Copyright (c) 2020, Itamar S. <itamar8910@gmail.com>
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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 are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED 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 OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <AK/LexicalPath.h>
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#include <LibCore/DirectoryWatcher.h>
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#include <LibCoreDump/Backtrace.h>
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#include <LibCoreDump/Reader.h>
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#include <sys/stat.h>
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#include <time.h>
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#include <unistd.h>
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static void wait_until_coredump_is_ready(const String& coredump_path)
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{
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while (true) {
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struct stat statbuf;
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if (stat(coredump_path.characters(), &statbuf) < 0) {
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perror("stat");
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ASSERT_NOT_REACHED();
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}
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if (statbuf.st_mode & 0400) // Check if readable
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break;
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usleep(10000); // sleep for 10ms
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}
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}
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static void print_backtrace(const String& coredump_path)
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{
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auto coredump = CoreDump::Reader::create(coredump_path);
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if (!coredump) {
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dbgln("Could not open coredump '{}'", coredump_path);
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return;
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}
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for (auto& entry : coredump->backtrace().entries())
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dbgln("{}", entry.to_string(true));
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}
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int main()
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{
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static constexpr const char* coredumps_dir = "/tmp/coredump";
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mkdir(coredumps_dir, 0777);
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Core::DirectoryWatcher watcher { coredumps_dir };
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while (true) {
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auto event = watcher.wait_for_event();
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ASSERT(event.has_value());
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if (event.value().type != Core::DirectoryWatcher::Event::Type::ChildAdded)
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continue;
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auto coredump_path = event.value().child_path;
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dbgln("New coredump file: {}", coredump_path);
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wait_until_coredump_is_ready(coredump_path);
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print_backtrace(coredump_path);
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}
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}
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