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* cygheap.cc (init_cygheap::find_tls): Add a comment. 

* dcrt0.cc (parent_sigmask): Delete.
(dll_crt0_1): Use spawn_info->moreinfo->sigmask rather than saved parent signal
mask.
* thread.cc (pthread::thread_init_wrapper): Add comment stressing the
importance of maintaining ordering of statements.
This commit is contained in:
Christopher Faylor 2013-04-07 23:53:00 +00:00
parent 4537e80a3a
commit f653639a22
4 changed files with 16 additions and 6 deletions
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9
winsup/cygwin/ChangeLog
View File

@ -1,3 +1,12 @@
2013-04-07 Christopher Faylor <me.cygwin2013@cgf.cx>
* cygheap.cc (init_cygheap::find_tls): Add a comment.
* dcrt0.cc (parent_sigmask): Delete.
(dll_crt0_1): Use spawn_info->moreinfo->sigmask rather than saved
parent signal mask.
* thread.cc (pthread::thread_init_wrapper): Add comment stressing the
importance of maintaining ordering of statements.
2013-04-05 Corinna Vinschen <corinna@vinschen.de>
* mmap.cc (is_mmapped_region): Call LIST_UNLOCK on premature return.

1
winsup/cygwin/cygheap.cc
View File

@ -628,6 +628,7 @@ init_cygheap::find_tls (int sig, bool& issig_wait)
else
{
ix = -1;
/* Scan thread list looking for valid signal-delivery candidates */
while (++ix < (int) nthreads)
if (!threadlist[ix]->tid)
continue;

9
winsup/cygwin/dcrt0.cc
View File

@ -398,7 +398,6 @@ check_sanity_and_sync (per_process *p)
}
child_info NO_COPY *child_proc_info;
static NO_COPY sigset_t parent_sigmask;
#define CYGWIN_GUARD (PAGE_READWRITE | PAGE_GUARD)
@ -655,8 +654,6 @@ child_info_spawn::handle_spawn ()
FALSE, DUPLICATE_SAME_ACCESS | DUPLICATE_CLOSE_SOURCE))
h = NULL;
parent_sigmask = moreinfo->sigmask;
/* Setup our write end of the process pipe. Clear the one in the structure.
The destructor should never be called for this but, it can't hurt to be
safe. */
@ -824,9 +821,9 @@ dll_crt0_1 (void *)
extern void initial_setlocale ();
_my_tls.incyg++;
if (!in_forkee)
_my_tls.sigmask = parent_sigmask; /* always zero if started by non-cygwin
process */
/* Inherit "parent" exec'ed process sigmask */
if (spawn_info && !in_forkee)
_my_tls.sigmask = spawn_info->moreinfo->sigmask;
if (dynamically_loaded)
sigproc_init ();

3
winsup/cygwin/thread.cc
View File

@ -1912,6 +1912,9 @@ DWORD WINAPI
pthread::thread_init_wrapper (void *arg)
{
pthread *thread = (pthread *) arg;
/* This *must* be set prior to calling set_tls_self_pointer or there is
a race with the signal processing code which may miss the signal mask
settings. */
_my_tls.sigmask = thread->parent_sigmask;
thread->set_tls_self_pointer ();