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* dcrt0.cc (child_info_fork::alloc_stack_hard_way): Change sense of guard test.

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Increase size of stack reserved and increase size before the current stack
pointer.  Use pointers when doing arithmetic.
(dll_crt0_1): Initialize exception handler when we notice we're the child of a
fork from non-main thread.
* fork.cc (frok::parent): Make argument volatile.
(frok::child): Ditto.
(lock_signals): New class.
(lock_pthread): Ditto.
(hold_everhthing): Ditto.
(frok::parent): Move atforkprepare and atforkparent to lock_pthread class.
(fork): Make ischild boolean.  Use hold_everything variable within limited
scope to set various mutexes in such a way as to avoid deadlocks.
* thread.h (pthread_mutex::tid): New variable, active when debugging for
tracking thread id of owner.
(pthread_mutex::set_owner): Set tid when debugging.
* thread.cc (pthread_mutex::pthread_mutex): Clear tid.
(pthread_mutex::_unlock): Ditto when unlocking.
(pthread_mutex::fixup_after_fork): Set tid to special value after forking since
owner is unknown.
This commit is contained in:
Christopher Faylor
2007-02-22 12:34:55 +00:00
parent bd8f891e8a
commit 39fc0d36ae
5 changed files with 171 additions and 55 deletions
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25
winsup/cygwin/ChangeLog
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@@ -1,3 +1,28 @@
2007-02-22 Christopher Faylor <me@cgf.cx>
* dcrt0.cc (child_info_fork::alloc_stack_hard_way): Change sense of
guard test. Increase size of stack reserved and increase size before
the current stack pointer. Use pointers when doing arithmetic.
(dll_crt0_1): Initialize exception handler when we notice we're the
child of a fork from non-main thread.
* fork.cc (frok::parent): Make argument volatile.
(frok::child): Ditto.
(lock_signals): New class.
(lock_pthread): Ditto.
(hold_everhthing): Ditto.
(frok::parent): Move atforkprepare and atforkparent to lock_pthread
class.
(fork): Make ischild boolean. Use hold_everything variable within
limited scope to set various mutexes in such a way as to avoid
deadlocks.
* thread.h (pthread_mutex::tid): New variable, active when debugging
for tracking thread id of owner.
(pthread_mutex::set_owner): Set tid when debugging.
* thread.cc (pthread_mutex::pthread_mutex): Clear tid.
(pthread_mutex::_unlock): Ditto when unlocking.
(pthread_mutex::fixup_after_fork): Set tid to special value after
forking since owner is unknown.
2007-02-22 Corinna Vinschen <corinna@vinschen.de>
Throughout replace all usage of wincap.shared with the constant