WebCore/WebCoreThread.h

   1 /*
   2  *  WebCoreThread.h
   3  *  WebCore
   4  *
   5  *  Copyright (C) 2006, 2007, Apple Inc.  All rights reserved.
   6  *
   7  */
   8
   9 #import <GraphicsServices/GSEvent.h>
  10
  11 #ifndef WebCoreThread_h
  12 #define WebCoreThread_h
  13
  14 #if defined(__cplusplus)
  15 extern "C" {
  16 #endif
  17
  18 typedef struct {
  19     CGContextRef currentCGContext;
  20 } WebThreadContext;
  21
  22 extern bool webThreadShouldYield;
  23
  24 // The lock is automatically freed at the bottom of the runloop. No need to unlock.
  25 // Note that calling this function may hang your UI for several seconds. Don't use
  26 // unless you have to.
  27 void WebThreadLock(void);
  28
  29 // This is a no-op for compatibility only. It will go away. Please don't use.
  30 void WebThreadUnlock(void);
  31
  32 // Please don't use anything below this line unless you know what you are doing. If unsure, ask.
  33 // ---------------------------------------------------------------------------------------------
  34 bool WebTryThreadLock(void);
  35 bool WebThreadIsLocked(void);
  36 bool WebThreadIsLockedOrDisabled(void);
  37
  38 void WebThreadLockPushModal(void);
  39 void WebThreadLockPopModal(void);
  40
  41 void WebThreadEnable(void);
  42 bool WebThreadIsEnabled(void);
  43 bool WebThreadIsCurrent(void);
  44 bool WebThreadNotCurrent(void);
  45
  46 // These are for <rdar://problem/6817341> Many apps crashing calling -[UIFieldEditor text] in secondary thread
  47 // Don't use them to solve any random problems you might have.
  48 void WebThreadLockFromAnyThread();
  49 void WebThreadUnlockFromAnyThread();
  50
  51 static inline bool WebThreadShouldYield(void) { return webThreadShouldYield; }
  52 static inline void WebThreadSetShouldYield() { webThreadShouldYield = true; }
  53
  54 CFRunLoopRef WebThreadRunLoop(void);
  55 WebThreadContext *WebThreadCurrentContext(void);
  56 bool WebThreadContextIsCurrent(void);
  57
  58 void WebThreadPrepareForDrawing(void);
  59
  60 #if defined(__cplusplus)
  61 }
  62 #endif
  63
  64 #endif // WebCoreThread_h