修复子进程日志路径固定的问题

server/Process.cpp

@@ -70,6 +70,11 @@ void Process::run(const string &cmd, const string &log_file_tmp) {
     }
     }
     fclose(fp);
     fclose(fp);
 #else
 #else
+    _pid = fork();
+    if (_pid < 0) {
+        throw std::runtime_error(StrPrinter << "fork child process failed,err:" << get_uv_errmsg());
+    }
+    if (_pid == 0) {
         string log_file;
         string log_file;
         if (log_file_tmp.empty()) {
         if (log_file_tmp.empty()) {
             //未指定子进程日志文件时，重定向至/dev/null
             //未指定子进程日志文件时，重定向至/dev/null
@@ -77,12 +82,6 @@ void Process::run(const string &cmd, const string &log_file_tmp) {
         } else {
         } else {
             log_file = StrPrinter << log_file_tmp << "." << getpid();
             log_file = StrPrinter << log_file_tmp << "." << getpid();
         }
         }
-
-    _pid = fork();
-    if (_pid < 0) {
-        throw std::runtime_error(StrPrinter << "fork child process failed,err:" << get_uv_errmsg());
-    }
-    if (_pid == 0) {
         //子进程关闭core文件生成
         //子进程关闭core文件生成
         struct rlimit rlim = {0, 0};
         struct rlimit rlim = {0, 0};
         setrlimit(RLIMIT_CORE, &rlim);
         setrlimit(RLIMIT_CORE, &rlim);
@@ -132,6 +131,13 @@ void Process::run(const string &cmd, const string &log_file_tmp) {
         exit(ret);
         exit(ret);
     }
     }
 
 
+    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 {
+        log_file = StrPrinter << log_file_tmp << "." << _pid;
+    }
     InfoL << "start child process " << _pid << ", log file:" << log_file;
     InfoL << "start child process " << _pid << ", log file:" << log_file;
 #endif // _WIN32
 #endif // _WIN32
 }
 }