diff options
author | Kaleb Keithley <kaleb@freedesktop.org> | 2003-11-14 15:54:30 +0000 |
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committer | Kaleb Keithley <kaleb@freedesktop.org> | 2003-11-14 15:54:30 +0000 |
commit | deae12c6b683898f5213992d561a59d4ea889cca (patch) | |
tree | 3ed14c7b76f47ec80c1868c34bd0e5de385db618 /src/LockDis.c | |
download | xorg-lib-libX11-deae12c6b683898f5213992d561a59d4ea889cca.tar.gz |
R6.6 is the Xorg base-lineXORG-MAIN
Diffstat (limited to 'src/LockDis.c')
-rw-r--r-- | src/LockDis.c | 90 |
1 files changed, 90 insertions, 0 deletions
diff --git a/src/LockDis.c b/src/LockDis.c new file mode 100644 index 00000000..91766791 --- /dev/null +++ b/src/LockDis.c @@ -0,0 +1,90 @@ +/* $Xorg: LockDis.c,v 1.4 2001/02/09 02:03:34 xorgcvs Exp $ */ + +/* + +Copyright 1993, 1998 The Open Group + +Permission to use, copy, modify, distribute, and sell this software and its +documentation for any purpose is hereby granted without fee, provided that +the above copyright notice appear in all copies and that both that +copyright notice and this permission notice appear in supporting +documentation. + +The above copyright notice and this permission notice shall be included in +all copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN +AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN +CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + +Except as contained in this notice, the name of The Open Group shall not be +used in advertising or otherwise to promote the sale, use or other dealings +in this Software without prior written authorization from The Open Group. + +*/ + +/* + * Author: Stephen Gildea, MIT X Consortium + * + * XLockDis.c - multi-thread application-level locking routines + */ + +#include "Xlibint.h" +#ifdef XTHREADS +#include "locking.h" +#endif + +#if NeedFunctionPrototypes +void XLockDisplay( + register Display* dpy) +#else +void XLockDisplay(dpy) + register Display* dpy; +#endif +{ +#ifdef XTHREADS + LockDisplay(dpy); + if (dpy->lock) + (*dpy->lock->user_lock_display)(dpy); + /* + * We want the threads in the reply queue to all get out before + * XLockDisplay returns, in case they have any side effects the + * caller of XLockDisplay was trying to protect against. + * XLockDisplay puts itself at the head of the event waiters queue + * to wait for all the replies to come in. + */ + if (dpy->lock && dpy->lock->reply_awaiters) { + struct _XCVList *cvl; + + cvl = (*dpy->lock->create_cvl)(dpy); + + /* stuff ourselves on the head of the queue */ + cvl->next = dpy->lock->event_awaiters; + dpy->lock->event_awaiters = cvl; + + while (dpy->lock->reply_awaiters) + ConditionWait(dpy, cvl->cv); + UnlockNextEventReader(dpy); /* pass the signal on */ + } + UnlockDisplay(dpy); +#endif +} + +#if NeedFunctionPrototypes +void XUnlockDisplay( + register Display* dpy) +#else +void XUnlockDisplay(dpy) + register Display* dpy; +#endif +{ +#ifdef XTHREADS + LockDisplay(dpy); + if (dpy->lock) + (*dpy->lock->user_unlock_display)(dpy); + UnlockDisplay(dpy); +#endif +} |