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authorUlrich Drepper <drepper@redhat.com>2007-02-25 21:44:22 +0000
committerUlrich Drepper <drepper@redhat.com>2007-02-25 21:44:22 +0000
commit00a1430e3f97ae7700d53da8ef6a6eaa100ca78d (patch)
tree818148e0707af54af8dc58c62c6238ad2cad0f2c /nptl
parent621c133d40be92557f611e63c86ef78efd3cb7bd (diff)
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* sysdeps/unix/sysv/linux/fork.c (__libc_fork): Reset refcntr in
	new thread, don't just decrement it.
	Patch by Suzuki K P <suzuki@in.ibm.com>.
Diffstat (limited to 'nptl')
-rw-r--r--nptl/ChangeLog6
-rw-r--r--nptl/sysdeps/unix/sysv/linux/fork.c9
2 files changed, 12 insertions, 3 deletions
diff --git a/nptl/ChangeLog b/nptl/ChangeLog
index 22aeba830a..37ac4cf323 100644
--- a/nptl/ChangeLog
+++ b/nptl/ChangeLog
@@ -1,3 +1,9 @@
+2007-02-25  Ulrich Drepper  <drepper@redhat.com>
+
+	* sysdeps/unix/sysv/linux/fork.c (__libc_fork): Reset refcntr in
+	new thread, don't just decrement it.
+	Patch by Suzuki K P <suzuki@in.ibm.com>.
+
 2007-02-21  Ulrich Drepper  <drepper@redhat.com>
 
 	* sysdeps/pthread/pthread-functions.h: Correct last patch, correct
diff --git a/nptl/sysdeps/unix/sysv/linux/fork.c b/nptl/sysdeps/unix/sysv/linux/fork.c
index 840974401b..98bb237c06 100644
--- a/nptl/sysdeps/unix/sysv/linux/fork.c
+++ b/nptl/sysdeps/unix/sysv/linux/fork.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2002, 2003 Free Software Foundation, Inc.
+/* Copyright (C) 2002, 2003, 2007 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
 
@@ -167,8 +167,11 @@ __libc_fork (void)
 	    allp->handler->child_handler ();
 
 	  /* Note that we do not have to wake any possible waiter.
-	     This is the only thread in the new process.  */
-	  --allp->handler->refcntr;
+ 	     This is the only thread in the new process.  The count
+ 	     may have been bumped up by other threads doing a fork.
+ 	     We reset it to 1, to avoid waiting for non-existing
+ 	     thread(s) to release the count.  */
+	  allp->handler->refcntr = 1;
 
 	  /* XXX We could at this point look through the object pool
 	     and mark all objects not on the __fork_handlers list as