add localtime_r checks, useful the threads

svn path=/trunk/icecast/; revision=5785

configure.in

@@ -62,7 +62,7 @@ dnl Checks for typedefs, structures, and compiler characteristics.
 dnl Check for types
 
 dnl Checks for library functions.
-AC_CHECK_FUNCS(nanosleep poll)
+AC_CHECK_FUNCS(localtime_r nanosleep poll)
 XIPH_NET
 
 dnl -- configure options --

src/util.c

@@ -24,6 +24,7 @@
 #endif
 
 #include "net/sock.h"
+#include "thread/thread.h"
 
 #include "cfgfile.h"
 #include "util.h"
@@ -587,3 +588,22 @@ char *util_dict_urlencode(util_dict *dict, char delim)
     return res;
 }
 
+#ifndef HAVE_LOCALTIME_R
+struct tm *localtime_r (const time_t *timep, struct tm *result)
+{
+     static mutex_t localtime_lock;
+     static int initialised = 0;
+     struct tm *tm;
+
+     if (initialised == 0)
+     {
+         thread_mutex_create (&localtime_lock);
+         initialised = 1;
+     }
+     thread_mutex_lock (&localtime_lock);
+     tm = localtime (timep);
+     memcpy (result, tm, sizeof (*result));
+     thread_mutex_unlock (&localtime_lock);
+     return result;
+}
+#endif

src/util.h

@@ -32,4 +32,9 @@ void util_dict_free(util_dict *dict);
 int util_dict_set(util_dict *dict, const char *key, const char *val);
 const char *util_dict_get(util_dict *dict, const char *key);
 char *util_dict_urlencode(util_dict *dict, char delim);
+
+#ifndef HAVE_LOCALTIME_R
+struct tm *localtime_r (const time_t *timep, struct tm *result);
+#endif
+
 #endif  /* __UTIL_H__ */