diff options
Diffstat (limited to 'libX11/src/locking.h')
| -rw-r--r-- | libX11/src/locking.h | 308 |
1 files changed, 154 insertions, 154 deletions
diff --git a/libX11/src/locking.h b/libX11/src/locking.h index 96019fc91..0dd3ebb6b 100644 --- a/libX11/src/locking.h +++ b/libX11/src/locking.h @@ -1,154 +1,154 @@ -/* - -Copyright 1992, 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 - * - * locking.h - data types for C Threads locking. - * Used by XlibInt.c, locking.c, LockDis.c - */ - -#ifndef _X_locking_H_ -#define _X_locking_H_ - -#define xmalloc(s) Xmalloc(s) -#define xfree(s) Xfree(s) -#include <X11/Xthreads.h> - -struct _XCVList { - xcondition_t cv; - xReply *buf; - struct _XCVList *next; -}; - -extern xthread_t (*_Xthread_self_fn)( /* in XlibInt.c */ - void -); - -/* Display->lock is a pointer to one of these */ - -struct _XLockInfo { - xmutex_t mutex; /* mutex for critical sections */ - int reply_bytes_left; /* nbytes of the reply still to read */ - Bool reply_was_read; /* _XReadEvents read a reply for _XReply */ - struct _XCVList *reply_awaiters; /* list of CVs for _XReply */ - struct _XCVList **reply_awaiters_tail; - struct _XCVList *event_awaiters; /* list of CVs for _XReadEvents */ - struct _XCVList **event_awaiters_tail; - Bool reply_first; /* who may read, reply queue or event queue */ - /* for XLockDisplay */ - int locking_level; /* how many times into XLockDisplay we are */ - xthread_t locking_thread; /* thread that did XLockDisplay */ - xcondition_t cv; /* wait if another thread has XLockDisplay */ - xthread_t reading_thread; /* cache */ - xthread_t conni_thread; /* thread in XProcessInternalConnection */ - xcondition_t writers; /* wait for writable */ - int num_free_cvls; - struct _XCVList *free_cvls; - /* used only in XlibInt.c */ - void (*pop_reader)( - Display* /* dpy */, - struct _XCVList** /* list */, - struct _XCVList*** /* tail */ - ); - struct _XCVList *(*push_reader)( - Display * /* dpy */, - struct _XCVList*** /* tail */ - ); - void (*condition_wait)( - xcondition_t /* cv */, - xmutex_t /* mutex */ -#if defined(XTHREADS_WARN) || defined(XTHREADS_FILE_LINE) - , char* /* file */, - int /* line */ -#endif - ); - void (*internal_lock_display)( - Display* /* dpy */, - Bool /* wskip */ -#if defined(XTHREADS_WARN) || defined(XTHREADS_FILE_LINE) - , char* /* file */, - int /* line */ -#endif - ); - /* used in XlibInt.c and locking.c */ - void (*condition_signal)( - xcondition_t /* cv */ -#if defined(XTHREADS_WARN) || defined(XTHREADS_FILE_LINE) - , char* /* file */, - int /* line */ -#endif - ); - void (*condition_broadcast)( - xcondition_t /* cv */ -#if defined(XTHREADS_WARN) || defined(XTHREADS_FILE_LINE) - , char* /* file */, - int /* line */ -#endif - ); - /* used in XlibInt.c and XLockDis.c */ - void (*lock_wait)( - Display* /* dpy */ - ); - void (*user_lock_display)( - Display* /* dpy */ - ); - void (*user_unlock_display)( - Display* /* dpy */ - ); - struct _XCVList *(*create_cvl)( - Display * /* dpy */ - ); -}; - -#define UnlockNextEventReader(d) if ((d)->lock) \ - (*(d)->lock->pop_reader)((d),&(d)->lock->event_awaiters,&(d)->lock->event_awaiters_tail) - -#if defined(XTHREADS_WARN) || defined(XTHREADS_FILE_LINE) -#define ConditionWait(d,c) if ((d)->lock) \ - (*(d)->lock->condition_wait)(c, (d)->lock->mutex,__FILE__,__LINE__) -#define ConditionSignal(d,c) if ((d)->lock) \ - (*(d)->lock->condition_signal)(c,__FILE__,__LINE__) -#define ConditionBroadcast(d,c) if ((d)->lock) \ - (*(d)->lock->condition_broadcast)(c,__FILE__,__LINE__) -#else -#define ConditionWait(d,c) if ((d)->lock) \ - (*(d)->lock->condition_wait)(c, (d)->lock->mutex) -#define ConditionSignal(d,c) if ((d)->lock) \ - (*(d)->lock->condition_signal)(c) -#define ConditionBroadcast(d,c) if ((d)->lock) \ - (*(d)->lock->condition_broadcast)(c) -#endif - -typedef struct _LockInfoRec { - xmutex_t lock; -} LockInfoRec; - -/* XOpenDis.c */ -extern int (*_XInitDisplayLock_fn)(Display *dpy); -extern void (*_XFreeDisplayLock_fn)(Display *dpy); - -#endif /* _X_locking_H_ */ +/*
+
+Copyright 1992, 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
+ *
+ * locking.h - data types for C Threads locking.
+ * Used by XlibInt.c, locking.c, LockDis.c
+ */
+
+#ifndef _X_locking_H_
+#define _X_locking_H_
+
+#define xmalloc(s) Xmalloc(s)
+#define xfree(s) Xfree(s)
+#include <X11/Xthreads.h>
+
+struct _XCVList {
+ xcondition_t cv;
+ xReply *buf;
+ struct _XCVList *next;
+};
+
+extern xthread_t (*_Xthread_self_fn)( /* in XlibInt.c */
+ void
+);
+
+/* Display->lock is a pointer to one of these */
+
+struct _XLockInfo {
+ xmutex_t mutex; /* mutex for critical sections */
+ int reply_bytes_left; /* nbytes of the reply still to read */
+ Bool reply_was_read; /* _XReadEvents read a reply for _XReply */
+ struct _XCVList *reply_awaiters; /* list of CVs for _XReply */
+ struct _XCVList **reply_awaiters_tail;
+ struct _XCVList *event_awaiters; /* list of CVs for _XReadEvents */
+ struct _XCVList **event_awaiters_tail;
+ Bool reply_first; /* who may read, reply queue or event queue */
+ /* for XLockDisplay */
+ int locking_level; /* how many times into XLockDisplay we are */
+ xthread_t locking_thread; /* thread that did XLockDisplay */
+ xcondition_t cv; /* wait if another thread has XLockDisplay */
+ xthread_t reading_thread; /* cache */
+ xthread_t conni_thread; /* thread in XProcessInternalConnection */
+ xcondition_t writers; /* wait for writable */
+ int num_free_cvls;
+ struct _XCVList *free_cvls;
+ /* used only in XlibInt.c */
+ void (*pop_reader)(
+ Display* /* dpy */,
+ struct _XCVList** /* list */,
+ struct _XCVList*** /* tail */
+ );
+ struct _XCVList *(*push_reader)(
+ Display * /* dpy */,
+ struct _XCVList*** /* tail */
+ );
+ void (*condition_wait)(
+ xcondition_t /* cv */,
+ xmutex_t /* mutex */
+#if defined(XTHREADS_WARN) || defined(XTHREADS_FILE_LINE)
+ , char* /* file */,
+ int /* line */
+#endif
+ );
+ void (*internal_lock_display)(
+ Display* /* dpy */,
+ Bool /* wskip */
+#if defined(XTHREADS_WARN) || defined(XTHREADS_FILE_LINE)
+ , char* /* file */,
+ int /* line */
+#endif
+ );
+ /* used in XlibInt.c and locking.c */
+ void (*condition_signal)(
+ xcondition_t /* cv */
+#if defined(XTHREADS_WARN) || defined(XTHREADS_FILE_LINE)
+ , char* /* file */,
+ int /* line */
+#endif
+ );
+ void (*condition_broadcast)(
+ xcondition_t /* cv */
+#if defined(XTHREADS_WARN) || defined(XTHREADS_FILE_LINE)
+ , char* /* file */,
+ int /* line */
+#endif
+ );
+ /* used in XlibInt.c and XLockDis.c */
+ void (*lock_wait)(
+ Display* /* dpy */
+ );
+ void (*user_lock_display)(
+ Display* /* dpy */
+ );
+ void (*user_unlock_display)(
+ Display* /* dpy */
+ );
+ struct _XCVList *(*create_cvl)(
+ Display * /* dpy */
+ );
+};
+
+#define UnlockNextEventReader(d) if ((d)->lock) \
+ (*(d)->lock->pop_reader)((d),&(d)->lock->event_awaiters,&(d)->lock->event_awaiters_tail)
+
+#if defined(XTHREADS_WARN) || defined(XTHREADS_FILE_LINE)
+#define ConditionWait(d,c) if ((d)->lock) \
+ (*(d)->lock->condition_wait)(c, (d)->lock->mutex,__FILE__,__LINE__)
+#define ConditionSignal(d,c) if ((d)->lock) \
+ (*(d)->lock->condition_signal)(c,__FILE__,__LINE__)
+#define ConditionBroadcast(d,c) if ((d)->lock) \
+ (*(d)->lock->condition_broadcast)(c,__FILE__,__LINE__)
+#else
+#define ConditionWait(d,c) if ((d)->lock) \
+ (*(d)->lock->condition_wait)(c, (d)->lock->mutex)
+#define ConditionSignal(d,c) if ((d)->lock) \
+ (*(d)->lock->condition_signal)(c)
+#define ConditionBroadcast(d,c) if ((d)->lock) \
+ (*(d)->lock->condition_broadcast)(c)
+#endif
+
+typedef struct _LockInfoRec {
+ xmutex_t lock;
+} LockInfoRec;
+
+/* XOpenDis.c */
+extern int (*_XInitDisplayLock_fn)(Display *dpy);
+extern void (*_XFreeDisplayLock_fn)(Display *dpy);
+
+#endif /* _X_locking_H_ */
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