applog 调试通过

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// 你必须定义一个 `main()` 函数入口。 #include <stdio.h> #include <unistd.h> #include <sys/types.h> #include <stdlib.h> #include <stdbool.h> #include <string.h> #include <sys/types.h> #include <sys/times.h> #include <pthread.h> #include <stdarg.h> #include <sys/time.h> extern bool use_syslog; extern bool opt_quiet; pthread_mutex_t console_lock; bool opt_debug = false; bool opt_log_output = false; bool opt_quiet; bool use_syslog; enum {     LOG_ERR,     LOG_WARNING,     LOG_NOTICE,     LOG_INFO,     LOG_DEBUG, }; #define __maybe_unused        __attribute__((unused)) #define unlikely(expr) (__builtin_expect(!!(expr), 0)) extern void quit(int status, const char *format, ...); static inline void mutex_lock(pthread_mutex_t *lock) {     if (unlikely(pthread_mutex_lock(lock)))         quit(1, "WTF MUTEX ERROR ON LOCK!"); } static inline void mutex_unlock(pthread_mutex_t *lock) {     if (unlikely(pthread_mutex_unlock(lock)))         quit(1, "WTF MUTEX ERROR ON UNLOCK!"); }   void cgtime(struct timeval *tv) {     gettimeofday(tv, NULL); }   static void my_log_curses(__maybe_unused int prio, char *f, va_list ap) {     if (opt_quiet && prio != LOG_ERR)         return;   else   {         int len = strlen(f);         strcpy(f + len - 1, "                    \n");         mutex_lock(&console_lock);         vprintf(f, ap);         mutex_unlock(&console_lock);     } } static void log_generic(int prio, const char *fmt, va_list ap); void vapplog(int prio, const char *fmt, va_list ap) {     if (!opt_debug && prio == LOG_DEBUG)         return;     if (use_syslog || opt_log_output || prio <= LOG_NOTICE)         log_generic(prio, fmt, ap); } void _applog(int prio, const char *fmt, ...) {     va_list ap;       va_start(ap, fmt);     vapplog(prio, fmt, ap);     va_end(ap); }   static void log_generic(int prio, const char *fmt, va_list ap) {      if (0) {}        else {         char *f;         int len;         struct timeval tv = {0, 0};         struct tm *tm;           cgtime(&tv);           const time_t tmp_time = tv.tv_sec;         tm = localtime(&tmp_time);           len = 40 + strlen(fmt) + 22;         f = alloca(len);         sprintf(f, " [%d-%02d-%02d %02d:%02d:%02d] %s\n",             tm->tm_year + 1900,             tm->tm_mon + 1,             tm->tm_mday,             tm->tm_hour,             tm->tm_min,             tm->tm_sec,             fmt);         /* Only output to stderr if it's not going to the screen as well */         if (!isatty(fileno((FILE *)stderr))) {             va_list apc;               va_copy(apc, ap);             vfprintf(stderr, f, apc);    /* atomic write to stderr */             va_end(apc);             fflush(stderr);         }           my_log_curses(prio, f, ap);     } }   void quit(int status, const char *format, ...) {     if (format) {         va_list ap;         va_start(ap, format);         vapplog(LOG_ERR, format, ap);         va_end(ap);     }    exit(status); } #define applog(prio, fmt, ...) do { \  char *tmp42; \  if (0) \     sprintf(tmp42, fmt, ##__VA_ARGS__); \  else \     _applog(prio, fmt, ##__VA_ARGS__); \ } while (0)    int main() {         struct timeval now;    cgtime(&now);     applog(LOG_INFO, "Stopping mining threads");    system("ls");    printf("Hello, World!\n");    return 0; }