267 lines
8.4 KiB
C++
267 lines
8.4 KiB
C++
/*
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* Copyright (c) 2016-present The ZLMediaKit project authors. All Rights Reserved.
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*
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* This file is part of ZLMediaKit(https://github.com/ZLMediaKit/ZLMediaKit).
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*
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* Use of this source code is governed by MIT-like license that can be found in the
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* LICENSE file in the root of the source tree. All contributing project authors
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* may be found in the AUTHORS file in the root of the source tree.
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*/
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#if !defined(_WIN32)
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#include <limits.h>
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#include <sys/resource.h>
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#include <sys/wait.h>
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#if !defined(ANDROID)
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#include <execinfo.h>
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#endif//!defined(ANDROID)
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#else
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#include <fcntl.h>
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#include <io.h>
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#include <Windows.h>
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#include <DbgHelp.h>
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#pragma comment(lib, "DbgHelp.lib")
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#endif//!defined(_WIN32)
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#include <cstdlib>
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#include <csignal>
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#include <map>
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#include <iostream>
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#include "System.h"
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#include "Util/util.h"
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#include "Util/logger.h"
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#include "Util/uv_errno.h"
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#include "Common/macros.h"
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#include "Common/JemallocUtil.h"
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using namespace std;
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using namespace toolkit;
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using namespace mediakit;
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#ifdef _WIN32
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#define popen _popen
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#define pclose _pclose
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#endif
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string System::execute(const string &cmd) {
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FILE *fPipe = NULL;
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fPipe = popen(cmd.data(), "r");
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if(!fPipe){
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return "";
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}
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string ret;
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char buff[1024] = {0};
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while(fgets(buff, sizeof(buff) - 1, fPipe)){
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ret.append(buff);
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}
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pclose(fPipe);
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return ret;
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}
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#if !defined(ANDROID) && !defined(_WIN32)
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static constexpr int MAX_STACK_FRAMES = 128;
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static void save_jemalloc_stats() {
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string jemalloc_status = JemallocUtil::get_malloc_stats();
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if (jemalloc_status.empty()) {
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return;
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}
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ofstream out(StrPrinter << exeDir() << "/jemalloc.json", ios::out | ios::binary | ios::trunc);
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out << jemalloc_status;
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out.flush();
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}
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static std::string get_func_symbol(const std::string &symbol) {
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size_t pos1 = symbol.find("(");
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if (pos1 == string::npos) {
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return "";
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}
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size_t pos2 = symbol.find("+", pos1);
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auto ret = symbol.substr(pos1 + 1, pos2 - pos1 - 1);
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return ret;
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}
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static void sig_crash(int sig) {
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signal(sig, SIG_DFL);
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void *array[MAX_STACK_FRAMES];
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int size = backtrace(array, MAX_STACK_FRAMES);
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char ** strings = backtrace_symbols(array, size);
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vector<vector<string> > stack(size);
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for (int i = 0; i < size; ++i) {
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auto &ref = stack[i];
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std::string symbol(strings[i]);
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ref.emplace_back(symbol);
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#if defined(__linux) || defined(__linux__)
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auto func_symbol = get_func_symbol(symbol);
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if (!func_symbol.empty()) {
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ref.emplace_back(toolkit::demangle(func_symbol.data()));
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}
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static auto addr2line = [](const string &address) {
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string cmd = StrPrinter << "addr2line -C -f -e " << exePath() << " " << address;
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return System::execute(cmd);
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};
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size_t pos1 = symbol.find_first_of("[");
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size_t pos2 = symbol.find_last_of("]");
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std::string address = symbol.substr(pos1 + 1, pos2 - pos1 - 1);
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ref.emplace_back(addr2line(address));
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#endif//__linux
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}
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free(strings);
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stringstream ss;
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ss << "## crash date:" << getTimeStr("%Y-%m-%d %H:%M:%S") << endl;
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ss << "## exe: " << exeName() << endl;
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ss << "## signal: " << sig << endl;
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ss << "## version: " << kServerName << endl;
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ss << "## stack: " << endl;
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for (size_t i = 0; i < stack.size(); ++i) {
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ss << "[" << i << "]: ";
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for (auto &str : stack[i]){
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ss << str << endl;
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}
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}
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string stack_info = ss.str();
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ofstream out(StrPrinter << exeDir() << "/crash." << getpid(), ios::out | ios::binary | ios::trunc);
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out << stack_info;
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out.flush();
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cerr << stack_info << endl;
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}
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#endif // !defined(ANDROID) && !defined(_WIN32)
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void System::startDaemon(bool &kill_parent_if_failed) {
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kill_parent_if_failed = true;
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#ifndef _WIN32
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static pid_t pid;
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do {
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pid = fork();
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if (pid == -1) {
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WarnL << "fork失败:" << get_uv_errmsg();
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// 休眠1秒再试 [AUTO-TRANSLATED:00e5d7bf]
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// Sleep for 1 second and try again
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sleep(1);
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continue;
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}
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if (pid == 0) {
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// 子进程 [AUTO-TRANSLATED:3f793797]
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// Child process
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return;
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}
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// 父进程,监视子进程是否退出 [AUTO-TRANSLATED:0e13a34d]
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// Parent process, monitor whether the child process exits
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DebugL << "启动子进程:" << pid;
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signal(SIGINT, [](int) {
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WarnL << "收到主动退出信号,关闭父进程与子进程";
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kill(pid, SIGINT);
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exit(0);
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});
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signal(SIGTERM,[](int) {
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WarnL << "收到主动退出信号,关闭父进程与子进程";
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kill(pid, SIGINT);
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exit(0);
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});
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do {
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int status = 0;
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if (waitpid(pid, &status, 0) >= 0) {
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WarnL << "子进程退出";
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// 休眠3秒再启动子进程 [AUTO-TRANSLATED:608448bd]
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// Sleep for 3 seconds and then start the child process
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sleep(3);
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// 重启子进程，如果子进程重启失败，那么不应该杀掉守护进程，这样守护进程可以一直尝试重启子进程 [AUTO-TRANSLATED:0a336b0a]
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// Restart the child process. If the child process fails to restart, the daemon process should not be killed. This allows the daemon process to continuously attempt to restart the child process.
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kill_parent_if_failed = false;
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break;
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}
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DebugL << "waitpid被中断:" << get_uv_errmsg();
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} while (true);
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} while (true);
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#endif // _WIN32
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}
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void System::systemSetup(){
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#ifdef ENABLE_JEMALLOC_DUMP
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//Save memory report when program exits
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atexit(save_jemalloc_stats);
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#endif //ENABLE_JEMALLOC_DUMP
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#if !defined(_WIN32)
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struct rlimit rlim,rlim_new;
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if (getrlimit(RLIMIT_CORE, &rlim)==0) {
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rlim_new.rlim_cur = rlim_new.rlim_max = RLIM_INFINITY;
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if (setrlimit(RLIMIT_CORE, &rlim_new)!=0) {
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rlim_new.rlim_cur = rlim_new.rlim_max = rlim.rlim_max;
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setrlimit(RLIMIT_CORE, &rlim_new);
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}
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InfoL << "core文件大小设置为:" << rlim_new.rlim_cur;
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}
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if (getrlimit(RLIMIT_NOFILE, &rlim)==0) {
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rlim_new.rlim_cur = rlim_new.rlim_max = RLIM_INFINITY;
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if (setrlimit(RLIMIT_NOFILE, &rlim_new)!=0) {
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rlim_new.rlim_cur = rlim_new.rlim_max = rlim.rlim_max;
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setrlimit(RLIMIT_NOFILE, &rlim_new);
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}
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InfoL << "文件最大描述符个数设置为:" << rlim_new.rlim_cur;
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}
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#ifndef ANDROID
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signal(SIGSEGV, sig_crash);
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signal(SIGABRT, sig_crash);
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// 忽略挂起信号 [AUTO-TRANSLATED:73e71e54]
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// Ignore the hang up signal
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signal(SIGHUP, SIG_IGN);
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#endif// ANDROID
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#else
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// 避免系统弹窗导致程序阻塞，适合无界面或后台服务场景。
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SetErrorMode(SEM_FAILCRITICALERRORS | SEM_NOGPFAULTERRORBOX | SEM_NOOPENFILEERRORBOX);
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#if !defined(__MINGW32__)
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// 将assert和error时错误输出
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_CrtSetReportMode(_CRT_ASSERT, _CRTDBG_MODE_DEBUG);
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_CrtSetReportMode(_CRT_ERROR, _CRTDBG_MODE_DEBUG);
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#endif
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_setmode(0, _O_BINARY);
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_setmode(1, _O_BINARY);
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_setmode(2, _O_BINARY);
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setvbuf(stdout, NULL, _IONBF, 0);
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setvbuf(stderr, NULL, _IONBF, 0);
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std::ios_base::sync_with_stdio(false);
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// 注册crash自动生成dump（等价core dump）
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SetUnhandledExceptionFilter([](EXCEPTION_POINTERS *pException) -> LONG {
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// 生成 dump 文件名，带时间戳
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char dumpPath[MAX_PATH];
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std::time_t t = std::time(nullptr);
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std::tm tm;
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#ifdef _MSC_VER
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localtime_s(&tm, &t);
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#else
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tm = *std::localtime(&t);
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#endif
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std::strftime(dumpPath, sizeof(dumpPath), "crash_%Y%m%d_%H%M%S.dmp", &tm);
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HANDLE hFile = CreateFileA(dumpPath, GENERIC_WRITE, 0, nullptr, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, nullptr);
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if (hFile != INVALID_HANDLE_VALUE) {
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MINIDUMP_EXCEPTION_INFORMATION mdei;
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mdei.ThreadId = GetCurrentThreadId();
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mdei.ExceptionPointers = pException;
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mdei.ClientPointers = FALSE;
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MiniDumpWriteDump(GetCurrentProcess(), GetCurrentProcessId(), hFile, MiniDumpNormal, &mdei, nullptr, nullptr);
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CloseHandle(hFile);
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}
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return EXCEPTION_EXECUTE_HANDLER;
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});
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#endif//!defined(_WIN32)
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}
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