src/winsup/cygwin ChangeLog ntdll.h thread.cc ...

[corinna at cygwin dot com]

CVSROOT:	/cvs/src
Module name:	src
Changes by:	corinna@sourceware.org	2013-07-23 14:15:20

Modified files:
	winsup/cygwin  : ChangeLog ntdll.h thread.cc thread.h 

Log message:
	* ntdll.h (struct _SEMAPHORE_BASIC_INFORMATION): Define.
	(enum _SEMAPHORE_INFORMATION_CLASS): Define.
	(NtQuerySemaphore): Declare.
	* thread.h (class semaphore): Add member startvalue.
	(semaphore::fixup_before_fork): New inline method.
	(semaphore::_fixup_before_fork): Declare.
	* thread.cc (MTinterface::fixup_before_fork): Additionally call
	semaphore::fixup_before_fork.
	(semaphore::semaphore): Set currentvalue to -1.  Set startvalue to
	incoming initializer value.
	(semaphore::_getvalue): Just query semaphore using NtQuerySemaphore
	rather then using WFSO/Release.
	(semaphore::_post): Drop setting currentvalue.  It's not thread-safe.
	(semaphore::_trywait): Ditto.
	(semaphore::_timedwait): Ditto.
	(semaphore::_wait): Ditto.
	(semaphore::_fixup_before_fork): New method, setting currentvalue from
	actual windows semaphore right before fork.
	(semaphore::_fixup_after_fork): Drop kludge from 2013-07-10.  Drop
	FIXME comment.

Patches:
http://sourceware.org/cgi-bin/cvsweb.cgi/src/winsup/cygwin/ChangeLog.diff?cvsroot=src&r1=1.6198&r2=1.6199
http://sourceware.org/cgi-bin/cvsweb.cgi/src/winsup/cygwin/ntdll.h.diff?cvsroot=src&r1=1.145&r2=1.146
http://sourceware.org/cgi-bin/cvsweb.cgi/src/winsup/cygwin/thread.cc.diff?cvsroot=src&r1=1.284&r2=1.285
http://sourceware.org/cgi-bin/cvsweb.cgi/src/winsup/cygwin/thread.h.diff?cvsroot=src&r1=1.138&r2=1.139