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/*
* Tencent is pleased to support the open source community by making Pebble available.
* Copyright (C) 2016 THL A29 Limited, a Tencent company. All rights reserved.
* Licensed under the MIT License (the "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
* http://opensource.org/licenses/MIT
* Unless required by applicable law or agreed to in writing, software distributed under the License
* is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
* or implied. See the License for the specific language governing permissions and limitations under
* the License.
*
*/
#include <errno.h>
#include <execinfo.h>
#include <signal.h>
#include <stdarg.h>
#include <stdio.h>
#include <string.h>
#include <sys/stat.h>
#include <sys/time.h>
#include <sys/types.h>
#include <time.h>
#include <unistd.h>
#include <sstream>
#include <string>
#include "common/file_util.h"
#include "common/log.h"
#include "common/string_utility.h"
#include "common/time_utility.h"
namespace pebble {
#define ARRAYSIZE(a) (sizeof(a) / sizeof(*(a)))
static const char* g_device_str[] = { "STDOUT", "FILE" };
static const char* g_priority_str[] = { "TRACE", "DEBUG", "INFO", "ERROR", "FATAL" };
////////////////////////////////////////////////////////////////////////////////////////////////////////////
// 信号处理部分:
static const struct {
int number;
const char* name;
} g_failure_signals[] = {
{ SIGSEGV, "SIGSEGV" },
{ SIGILL, "SIGILL" },
{ SIGFPE, "SIGFPE" },
{ SIGABRT, "SIGABRT" },
{ SIGBUS, "SIGBUS" },
{ SIGTERM, "SIGTERM" }
};
static struct sigaction g_sigaction_bak[ARRAYSIZE(g_failure_signals)];
// 获取调用栈
int GetStackTrace(void** result, int max_depth, int skip_num) {
static const int stack_len = 64;
void * stack[stack_len] = {0};
int size = backtrace(stack, stack_len);
int remain = size - (++skip_num);
if (remain < 0) {
remain = 0;
}
if (remain > max_depth) {
remain = max_depth;
}
for (int i = 0; i < remain; i++) {
result[i] = stack[i + skip_num];
}
return remain;
}
// 信号处理
void SignalHandler(int signum, siginfo_t* siginfo, void* ucontext)
{
// 获取时间
std::ostringstream oss;
oss << "[" << TimeUtility::GetStringTimeDetail() << "]";
// 获取信号名
const char* signame = "";
uint32_t i = 0;
for (; i < ARRAYSIZE(g_failure_signals); i++) {
if (g_failure_signals[i].number == signum) {
signame = g_failure_signals[i].name;
break;
}
}
oss << "[(SIGNAL)(" << signame << ")][FATAL]";
// 获取栈
void* stack[32] = {0};
int depth = GetStackTrace(stack, ARRAYSIZE(stack), 1);
char** symbols = backtrace_symbols(stack, depth);
oss << "\nstack trace:\n";
for (int i = 0; i < depth; i++) {
oss << "#" << i << " " << symbols[i] << "\n";
}
oss << "\n";
// 输出
PLOG_FATAL("%s", oss.str().c_str());
// 恢复默认处理
sigaction(signum, &g_sigaction_bak[i], NULL);
kill(getpid(), signum);
}
// 注册信号处理
void InstallSignalHandler()
{
static bool _installed = false;
if (_installed) {
return;
}
_installed = true;
struct sigaction sig_action;
memset(&sig_action, 0, sizeof(sig_action));
sigemptyset(&sig_action.sa_mask);
sig_action.sa_flags |= SA_SIGINFO;
sig_action.sa_sigaction = &SignalHandler;
for (uint32_t i = 0; i < ARRAYSIZE(g_failure_signals); i++) {
sigaction(g_failure_signals[i].number, &sig_action, &g_sigaction_bak[i]);
}
}
////////////////////////////////////////////////////////////////////////////////////////////////////////////
// log实现部分:
Log::Log() {
m_device_type = DEV_FILE;
m_log_priority = LOG_PRIORITY_INFO;
std::string self_name = GetSelfName();
m_log_array[kLOG_LOG] = new RollUtil("./log", self_name + ".log");
m_log_array[kLOG_ERROR] = new RollUtil("./log", self_name + ".error");
m_log_array[kLOG_STAT] = new RollUtil("./log", self_name + ".stat");
m_isset_time = false;
m_current_time = TimeUtility::GetCurrentUS();
}
Log::Log(const Log& rhs) {
m_device_type = DEV_FILE;
m_log_priority = LOG_PRIORITY_INFO;
for (int i = 0; i < kLOG_BUTT; i++) {
m_log_array[i] = NULL;
}
m_isset_time = false;
m_current_time = 0;
}
Log::~Log() {
for (int i = 0; i < kLOG_BUTT; i++) {
delete m_log_array[i];
m_log_array[i] = NULL;
}
}
void Log::Write(LOG_PRIORITY pri, const char* file, uint32_t line,
const char* function, const char* fmt, ...)
{
// 优先级以PLOG为准，避免多做格式化
if (pri < m_log_priority) {
return;
}
static char buff[4096] = {0};
// log前缀，接入其他log时不用组装
int pre_len = 0;
if (!m_log_write_func) {
pre_len = snprintf(buff, ARRAYSIZE(buff), "[%s][%d][(%s:%d)(%s)][%s] ",
TimeUtility::GetStringTimeDetail(),
getpid(),
file,
line,
function,
g_priority_str[pri]
);
if (pre_len < 0) {
pre_len = 0;
}
}
va_list ap;
va_start(ap, fmt);
int len = vsnprintf(buff + pre_len, ARRAYSIZE(buff) - pre_len, fmt, ap);
va_end(ap);
if (len < 0) {
len = 0;
}
// 输出到其他log
if (m_log_write_func) {
m_log_write_func(pri, file, line, function, buff);
return;
}
// 其他log以有'\n'，PLOG需要再补换行
uint32_t tail = len + pre_len;
if (tail > (ARRAYSIZE(buff) - 2)) {
tail = ARRAYSIZE(buff) - 2;
}
buff[tail++] = '\n';
buff[tail] = '\0';
// 输出到stdout
if (DEV_STDOUT == m_device_type) {
fprintf(stdout, "%s", buff);
return;
}
// 输出到ERROR文件
if (pri >= LOG_PRIORITY_ERROR && m_log_array[kLOG_ERROR] != NULL) {
FILE* error = m_log_array[kLOG_ERROR]->GetFile();
if (error != NULL) {
fwrite(buff, tail, 1, error);
}
}
// 输出到log文件
if (m_log_array[kLOG_LOG] != NULL) {
FILE* log = m_log_array[kLOG_LOG]->GetFile();
if (log != NULL) {
fwrite(buff, tail, 1, log);
}
}
}
void Log::Write(const char* data)
{
if (m_log_array[kLOG_STAT] == NULL) {
return;
}
FILE* stat = m_log_array[kLOG_STAT]->GetFile();
if (stat != NULL) {
char buff[64] = {0};
int len = snprintf(buff, ARRAYSIZE(buff), "[%s] ", TimeUtility::GetStringTimeDetail());
fwrite(buff, len, 1, stat);
fwrite(data, strlen(data), 1, stat);
}
}
void Log::Close()
{
for (int i = 0; i < kLOG_BUTT; i++) {
if (m_log_array[i]) {
m_log_array[i]->Close();
}
}
}
void Log::RegisterLogWriteFunc(const LogWriteFunc& log_write_func)
{
m_log_write_func = log_write_func;
}
void Log::EnableCrashRecord()
{
InstallSignalHandler();
}
void Log::Flush()
{
for (int i = 0; i < kLOG_BUTT; i++) {
if (m_log_array[i]) {
m_log_array[i]->Flush();
}
}
}
int Log::SetOutputDevice(DEVICE_TYPE device)
{
if (device < DEV_STDOUT || device > DEV_FILE) {
return -1;
}
m_device_type = device;
return 0;
}
int Log::SetOutputDevice(const std::string& device)
{
std::string tmp(device);
StringUtility::ToUpper(&tmp);
for (uint32_t i = 0; i < ARRAYSIZE(g_device_str); i++) {
if (g_device_str[i] == tmp) {
m_device_type = static_cast<DEVICE_TYPE>(i);
return 0;
}
}
return -1;
}
int Log::SetLogPriority(LOG_PRIORITY priority)
{
if (priority < LOG_PRIORITY_TRACE || priority > LOG_PRIORITY_FATAL) {
return -1;
}
m_log_priority = priority;
return 0;
}
int Log::SetLogPriority(const std::string& priority)
{
std::string tmp(priority);
StringUtility::ToUpper(&tmp);
for (uint32_t i = 0; i < ARRAYSIZE(g_priority_str); i++) {
if (g_priority_str[i] == tmp) {
m_log_priority = static_cast<LOG_PRIORITY>(i);
return 0;
}
}
return -1;
}
void Log::SetMaxFileSize(uint32_t max_size_Mbytes)
{
uint32_t file_size = max_size_Mbytes;
if (max_size_Mbytes < 1) {
file_size = 1;
}
file_size = file_size * 1024 * 1024;
for (int i = 0; i < kLOG_BUTT; i++) {
if (m_log_array[i]) {
m_log_array[i]->SetFileSize(file_size);
}
}
}
void Log::SetMaxRollNum(uint32_t num)
{
for (int i = 0; i < kLOG_BUTT; i++) {
if (m_log_array[i]) {
m_log_array[i]->SetRollNum(num);
}
}
}
void Log::SetFilePath(const std::string& file_path)
{
for (int i = 0; i < kLOG_BUTT; i++) {
if (m_log_array[i]) {
m_log_array[i]->SetFilePath(file_path);
}
}
// 更改路径后log立即输出在新的路径下面
Close();
}
void Log::SetCurrentTime(int64_t timestamp) {
m_current_time = timestamp;
m_isset_time = true;
}
int64_t Log::GetCurrentTime() {
if (m_isset_time) {
return m_current_time;
}
return TimeUtility::GetCurrentUS();
}
} // namespace pebble