qnx log写入文件 简单实现
#ifndef __COMMON_LOG__
#define __COMMON_LOG__#include "fcntl.h"
#include "pthread.h"
#include "stdarg.h"
#include "unistd.h"
#include <stdio.h>
#include <string.h>//#define _LOG_FILE_NAME "/tmp/easy.log"
#define _LOG_FILE_NAME "easy.log"#if defined _LOG_FILE_NAMEvoid __file_log_com(char *log_str, ...);
#define __file__ \({ \char *_rs = strrchr((char*)__FILE__, '/'); \_rs ? (_rs + 1) : __FILE__; \})
#define _COM_FILE_PARSE(lgType, prefix, fmt, args...) \do { \__file_log_com("[%s][%s:%s:%d][%s]" fmt, lgType, __file__, __func__, __LINE__, prefix, ##args); \} while (0)#define ts_log_info(dev, fmt, args...) _COM_FILE_PARSE("info", dev, fmt, ##args)
#define ts_log_err(dev, fmt, args...) _COM_FILE_PARSE("error", dev, fmt, ##args)
#define ts_log_warn(dev, fmt, args...) _COM_FILE_PARSE("warning", dev, fmt, ##args)
#define ts_log_dbg(dev, fmt, args...) _COM_FILE_PARSE("debug", dev, fmt, ##args)#else#define ts_log_info(dev, fmt, args...)
#define ts_log_err(dev, fmt, args...)
#define ts_log_warn(dev, fmt, args...)
#define ts_log_dbg(dev, fmt, args...) #endifstatic pthread_mutex_t _log_mutex;
static FILE *_log_fp = NULL;// qnx 简单log写入文件 实现
void __file_log_com(char *log_str, ...) {va_list arg;if (NULL != _log_fp) {pthread_mutex_lock(&_log_mutex);va_start(arg, log_str);(void)vfprintf(_log_fp, log_str, arg);va_end(arg);//(void)fprintf(___fp, " \n");//(void)fclose(fp);fflush(_log_fp);pthread_mutex_unlock(&_log_mutex);}
}void com_file_log_init(char *filename) {_log_fp = fopen(filename, "w");if (!_log_fp)return perror(__func__);pthread_mutex_init(&_log_mutex, NULL);
}int main() {printf( "hello\n");com_file_log_init(_LOG_FILE_NAME);char* dev_name = (char*)"E800";ts_log_info(dev_name, "hello world");// __file_log_com("%s,%s", dev_name, "e800");printf( "finish\n");return 0;
}#endif运行结果：
hello
finish
写入文件样子：
