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winsup/cygwin ChangeLog dcrt0.cc fork.cc threa ...


CVSROOT:	/cvs/uberbaum
Module name:	winsup
Changes by:	cgf@sourceware.org	2007-02-22 12:34:55

Modified files:
	cygwin         : ChangeLog dcrt0.cc fork.cc thread.cc thread.h 

Log message:
	* 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.

Patches:
http://sourceware.org/cgi-bin/cvsweb.cgi/winsup/cygwin/ChangeLog.diff?cvsroot=uberbaum&r1=1.3763&r2=1.3764
http://sourceware.org/cgi-bin/cvsweb.cgi/winsup/cygwin/dcrt0.cc.diff?cvsroot=uberbaum&r1=1.317&r2=1.318
http://sourceware.org/cgi-bin/cvsweb.cgi/winsup/cygwin/fork.cc.diff?cvsroot=uberbaum&r1=1.189&r2=1.190
http://sourceware.org/cgi-bin/cvsweb.cgi/winsup/cygwin/thread.cc.diff?cvsroot=uberbaum&r1=1.200&r2=1.201
http://sourceware.org/cgi-bin/cvsweb.cgi/winsup/cygwin/thread.h.diff?cvsroot=uberbaum&r1=1.104&r2=1.105


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