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优化日志重定向代码

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This commit is contained in:
xiongziliang 2020-06-01 11:17:50 +08:00
parent 974260156e
commit fe095a4117
1 changed files with 13 additions and 18 deletions
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25
server/Process.cpp
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@ -10,7 +10,6 @@
#include <limits.h>
#include <sys/stat.h>
#ifndef _WIN32
#include <sys/resource.h>
#include <unistd.h>
@ -60,26 +59,23 @@ void Process::run(const string &cmd, const string &log_file_tmp) {
setrlimit(RLIMIT_CORE, &rlim);
//在启动子进程时，暂时禁用SIGINT、SIGTERM信号
// ignore the SIGINT and SIGTERM
signal(SIGINT, SIG_IGN);
signal(SIGTERM, SIG_IGN);
string log_file;
if (log_file_tmp.empty()) {
//未指定子进程日志文件时，重定向至/dev/null
log_file = "/dev/null";
}
else {
} else {
log_file = StrPrinter << log_file_tmp << "." << getpid();
}
int log_fd = -1;
int flags = O_CREAT | O_WRONLY | O_APPEND;
mode_t mode = S_IRWXO | S_IRWXG | S_IRWXU;// S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH;
File::create_path(log_file.data(), mode);
if ((log_fd = ::open(log_file.c_str(), flags, mode)) < 0) {
//重定向shell日志至文件
auto fp = File::create_file(log_file.data(), "ab");
if (!fp) {
fprintf(stderr, "open log file %s failed:%d(%s)\r\n", log_file.data(), errno, strerror(errno));
}
else {
} else {
auto log_fd = fileno(fp);
// dup to stdout and stderr.
if (dup2(log_fd, STDOUT_FILENO) < 0) {
fprintf(stderr, "dup2 stdout file %s failed:%d(%s)\r\n", log_file.data(), errno, strerror(errno));
@ -87,13 +83,12 @@ void Process::run(const string &cmd, const string &log_file_tmp) {
if (dup2(log_fd, STDERR_FILENO) < 0) {
fprintf(stderr, "dup2 stderr file %s failed:%d(%s)\r\n", log_file.data(), errno, strerror(errno));
}
// close log fd
::close(log_fd);
// 关闭日志文件
::fclose(fp);
}
fprintf(stderr, "\r\n\r\n#### pid=%d,cmd=%s #####\r\n\r\n", getpid(), cmd.data());
// close other fds
// TODO: do in right way.
//关闭父进程继承的fd
for (int i = 3; i < 1024; i++) {
::close(i);
}