Add _tzset_unlocked and _tzset_unlocked_r

newlib:

	* libc/time/local.h (_tzset_unlocked_r): Add prototype.
	(_tzset_unlocked): Ditto.
	* libc/time/tzset.c (_tzset_unlocked): New function, call
	_tzset_unlocked_r.
	(tzset): Lock and call _tzset_unlocked_r.
	* libc/time/tzset_r (_tzset_unlocked_r): Remove locking and rename
	from _tzset_r.
	(_tzset_r): Lock and call _tzset_unlocked_r.

cygwin:

	* localtime.cc (tzset_unlocked): Export as _tzset_unlocked.

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>

4 files changed, 35 insertions, 23 deletions

diff --git a/newlib/ChangeLog b/newlib/ChangeLog
index c214b69..420354e 100644
--- a/newlib/ChangeLog
+++ b/newlib/ChangeLog
@@ -1,3 +1,14 @@
+2015-03-31  Corinna Vinschen  <vinschen@redhat.com>
+
+	* libc/time/local.h (_tzset_unlocked_r): Add prototype.
+	(_tzset_unlocked): Ditto.
+	* libc/time/tzset.c (_tzset_unlocked): New function, call
+	_tzset_unlocked_r.
+	(tzset): Lock and call _tzset_unlocked_r.
+	* libc/time/tzset_r (_tzset_unlocked_r): Remove locking and rename
+	from _tzset_r.
+	(_tzset_r): Lock and call _tzset_unlocked_r.
+
 2015-03-30  Craig Howland  <howland@LGSInnovations.com>
 
 	* libc/stdlib/setenv_r.c (_setenv_r): Remove tzset() call for TZ
diff --git a/newlib/libc/time/local.h b/newlib/libc/time/local.h
index 5fc3ddc..af5793a 100644
--- a/newlib/libc/time/local.h
+++ b/newlib/libc/time/local.h
@@ -23,6 +23,9 @@ int         _EXFUN (__tzcalc_limits, (int __year));
 
 extern _CONST int __month_lengths[2][MONSPERYEAR];
 
+_VOID _EXFUN(_tzset_unlocked_r, (struct _reent *));
+_VOID _EXFUN(_tzset_unlocked, (_VOID));
+
 /* locks for multi-threading */
 #ifdef __SINGLE_THREAD__
 #define TZ_LOCK
diff --git a/newlib/libc/time/tzset.c b/newlib/libc/time/tzset.c
index d847a26..5c421a5 100644
--- a/newlib/libc/time/tzset.c
+++ b/newlib/libc/time/tzset.c
@@ -68,7 +68,15 @@ Supporting OS subroutine required: None
 #include "local.h"
 
 _VOID
+_DEFUN_VOID (_tzset_unlocked)
+{
+  _tzset_unlocked_r (_REENT);
+}
+
+_VOID
 _DEFUN_VOID (tzset)
 {
-  _tzset_r (_REENT);
+  TZ_LOCK;
+  _tzset_unlocked_r (_REENT);
+  TZ_UNLOCK;
 }
diff --git a/newlib/libc/time/tzset_r.c b/newlib/libc/time/tzset_r.c
index 2c5b723..6c21e82 100644
--- a/newlib/libc/time/tzset_r.c
+++ b/newlib/libc/time/tzset_r.c
@@ -14,7 +14,7 @@ static char __tzname_dst[11];
 static char *prev_tzenv = NULL;
 
 _VOID
-_DEFUN (_tzset_r, (reent_ptr),
+_DEFUN (_tzset_unlocked_r, (reent_ptr),
         struct _reent *reent_ptr)
 {
   char *tzenv;
@@ -25,24 +25,17 @@ _DEFUN (_tzset_r, (reent_ptr),
 
   if ((tzenv = _getenv_r (reent_ptr, "TZ")) == NULL)
       {
-	TZ_LOCK;
 	_timezone = 0;
 	_daylight = 0;
 	_tzname[0] = "GMT";
 	_tzname[1] = "GMT";
 	free(prev_tzenv);
 	prev_tzenv = NULL;
-	TZ_UNLOCK;
 	return;
       }
 
-  TZ_LOCK;
-
   if (prev_tzenv != NULL && strcmp(tzenv, prev_tzenv) == 0)
-    {
-      TZ_UNLOCK;
-      return;
-    }
+    return;
 
   free(prev_tzenv);
   prev_tzenv = _malloc_r (reent_ptr, strlen(tzenv) + 1);
@@ -54,10 +47,7 @@ _DEFUN (_tzset_r, (reent_ptr),
     ++tzenv;  
 
   if (sscanf (tzenv, "%10[^0-9,+-]%n", __tzname_std, &n) <= 0)
-    {
-      TZ_UNLOCK;
-      return;
-    }
+    return;
  
   tzenv += n;
 
@@ -74,10 +64,7 @@ _DEFUN (_tzset_r, (reent_ptr),
   ss = 0;
  
   if (sscanf (tzenv, "%hu%n:%hu%n:%hu%n", &hh, &n, &mm, &n, &ss, &n) < 1)
-    {
-      TZ_UNLOCK;
-      return;
-    }
+    return;
   
   tz->__tzrule[0].offset = sign * (ss + SECSPERMIN * mm + SECSPERHOUR * hh);
   _tzname[0] = __tzname_std;
@@ -88,7 +75,6 @@ _DEFUN (_tzset_r, (reent_ptr),
       _tzname[1] = _tzname[0];
       _timezone = tz->__tzrule[0].offset;
       _daylight = 0;
-      TZ_UNLOCK;
       return;
     }
   else
@@ -127,10 +113,7 @@ _DEFUN (_tzset_r, (reent_ptr),
 	{
 	  if (sscanf (tzenv, "M%hu%n.%hu%n.%hu%n", &m, &n, &w, &n, &d, &n) != 3 ||
 	      m < 1 || m > 12 || w < 1 || w > 5 || d > 6)
-	    {
-	      TZ_UNLOCK;
-	      return;
-	    }
+	    return;
 	  
 	  tz->__tzrule[i].ch = 'M';
 	  tz->__tzrule[i].m = m;
@@ -198,6 +181,13 @@ _DEFUN (_tzset_r, (reent_ptr),
   __tzcalc_limits (tz->__tzyear);
   _timezone = tz->__tzrule[0].offset;  
   _daylight = tz->__tzrule[0].offset != tz->__tzrule[1].offset;
+}
 
+_VOID
+_DEFUN (_tzset_r, (reent_ptr),
+        struct _reent *reent_ptr)
+{
+  TZ_LOCK;
+  _tzset_unlocked_r (reent_ptr);
   TZ_UNLOCK;
 }