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2007-02-25 Ulrich Drepper <drepper@redhat.com>

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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>.
This commit is contained in:
Jakub Jelinek 2007-07-12 15:40:54 +00:00
parent eff61d5bf1
commit d8cdfda31e
2 changed files with 11 additions and 2 deletions
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6
nptl/ChangeLog
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@ -186,6 +186,12 @@
* tst-cancel-wrappers.sh: Set C["fdatasync"] to 1.
* tst-cancel4.c (tf_fdatasync): New test.
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>.
2007-02-09 Jakub Jelinek <jakub@redhat.com>
* sysdeps/unix/sysv/linux/x86_64/lowlevellock.S

7
nptl/sysdeps/unix/sysv/linux/fork.c
View File

@ -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