gettimeofday automatically compatible with different glibc versions.

Author: jfb8856606

app/nginx-1.16.1/src/event/modules/ngx_ff_module.c

@@ -545,13 +545,12 @@ kevent(int kq, const struct kevent *changelist, int nchanges,
     return ff_kevent(kq, changelist, nchanges, eventlist, nevents, timeout);
 }
 
-/*
- * It is need to modify the definition in some OS, such as Ubuntu 22.04 or later.
- *
- * int(struct timeval * restrict,  void * restrict)
- */
 int
+#if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 31)
+gettimeofday(struct timeval *tv, void *tz)
+#else
 gettimeofday(struct timeval *tv, struct timezone *tz)
+#endif
 {
     if (unlikely(inited == 0)) {
         return SYSCALL(gettimeofday)(tv, tz);

lib/ff_api.h

@@ -136,7 +136,12 @@ int ff_kevent_do_each(int kq, const struct kevent *changelist, int nchanges,
     void *eventlist, int nevents, const struct timespec *timeout,
     void (*do_each)(void **, struct kevent *));
 
+#if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 31)
+int ff_gettimeofday(struct timeval *tv, void *tz);
+#else
 int ff_gettimeofday(struct timeval *tv, struct timezone *tz);
+#endif
+
 
 int ff_dup(int oldfd);
 int ff_dup2(int oldfd, int newfd);

lib/ff_syscall_wrapper.c

@@ -1452,7 +1452,11 @@ ff_kevent(int kq, const struct kevent *changelist, int nchanges,
 }
 
 int
+#if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 31)
+ff_gettimeofday(struct timeval *tv, void *tz)
+#else
 ff_gettimeofday(struct timeval *tv, struct timezone *tz)
+#endif
 {
     long nsec;
     ff_get_current_time(&(tv->tv_sec), &nsec);