mirror of
https://github.com/RGBCube/serenity
synced 2025-05-25 19:25:07 +00:00
2acbb811b1
This wrapper abstracts the watch_file setup and file handling, and allows using the watch_file events as part of the event loop via the Core::Notifier class. Also renames the existing DirectoryWatcher class to BlockingFileWatcher, and adds support for the Modified mode in this class.
104 lines
3.7 KiB
C++
104 lines
3.7 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/FileWatcher.h>
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#include <LibCoreDump/Backtrace.h>
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#include <LibCoreDump/Reader.h>
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#include <serenity.h>
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#include <spawn.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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size_t thread_index = 0;
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coredump->for_each_thread_info([&](auto& thread_info) {
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CoreDump::Backtrace backtrace(*coredump, thread_info);
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if (thread_index > 0)
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dbgln();
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dbgln("--- Backtrace for thread #{} (TID {}) ---", thread_index, thread_info.tid);
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for (auto& entry : backtrace.entries())
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dbgln("{}", entry.to_string(true));
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++thread_index;
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return IterationDecision::Continue;
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});
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}
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static void launch_crash_reporter(const String& coredump_path)
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{
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pid_t child;
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const char* argv[] = { "CrashReporter", coredump_path.characters(), nullptr, nullptr };
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if ((errno = posix_spawn(&child, "/bin/CrashReporter", nullptr, nullptr, const_cast<char**>(argv), environ))) {
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perror("posix_spawn");
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} else {
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if (disown(child) < 0)
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perror("disown");
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}
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}
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int main()
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{
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if (pledge("stdio rpath proc exec", nullptr) < 0) {
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perror("pledge");
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return 1;
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}
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Core::BlockingFileWatcher watcher { "/tmp/coredump" };
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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::FileWatcherEvent::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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launch_crash_reporter(coredump_path);
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}
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}
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