From: Loren J. Rittle <ljrittle@acm.org>
Date: Wed, 4 Dec 2002 22:24:05 +0000 (+0000)
Subject: re PR libstdc++/7445 (poor performance of std::locale::classic() in multi-threaded... 
X-Git-Tag: releases/gcc-3.2.2~214
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=937da96a49a9c59230ac5ec130036b956d9de337;p=thirdparty%2Fgcc.git

re PR libstdc++/7445 (poor performance of std::locale::classic() in multi-threaded applications)

	PR libstdc++/7445
	* src/locale.cc (std::locale::classic()): Weaken locking protocol.

From-SVN: r59834
---

diff --git a/libstdc++-v3/ChangeLog b/libstdc++-v3/ChangeLog
index 118e0b73f53b..4476f5b1e4b1 100644
--- a/libstdc++-v3/ChangeLog
+++ b/libstdc++-v3/ChangeLog
@@ -1,3 +1,8 @@
+2002-12-04  Loren J. Rittle  <ljrittle@acm.org>
+
+	PR libstdc++/7445
+	* src/locale.cc (std::locale::classic()): Weaken locking protocol.
+
 2002-12-03  Phil Edwards  <pme@gcc.gnu.org>
 
 	* include/bits/streambuf.tcc (basic_streambuf::sputbackc):  Prefix
diff --git a/libstdc++-v3/src/locale.cc b/libstdc++-v3/src/locale.cc
index 127197d0138f..46fab2832410 100644
--- a/libstdc++-v3/src/locale.cc
+++ b/libstdc++-v3/src/locale.cc
@@ -367,9 +367,7 @@ namespace std
   const locale&
   locale::classic()
   {
-    static _STL_mutex_lock __lock __STL_MUTEX_INITIALIZER;
-    _STL_auto_lock __auto(__lock);
-
+    // Locking protocol: singleton-called-before-threading-starts
     if (!_S_classic)
       {
 	try