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-/*
- * Copyright (C) 2007 Apple Inc. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
- * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
- * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
- * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
- * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
- * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
- * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#import "config.h"
-#import "ThreadCheck.h"
-
-#import <wtf/HashSet.h>
-#import <wtf/StdLibExtras.h>
-#include <wtf/text/StringHash.h>
-
-namespace WebCore {
-
-static bool didReadThreadViolationBehaviorFromUserDefaults = false;
-static bool threadViolationBehaviorIsDefault = true;
-static ThreadViolationBehavior threadViolationBehavior[MaximumThreadViolationRound] = { RaiseExceptionOnThreadViolation, RaiseExceptionOnThreadViolation };
-
-static void readThreadViolationBehaviorFromUserDefaults()
-{
- didReadThreadViolationBehaviorFromUserDefaults = true;
-
- ThreadViolationBehavior newBehavior = LogOnFirstThreadViolation;
- NSString *threadCheckLevel = [[NSUserDefaults standardUserDefaults] stringForKey:@"WebCoreThreadCheck"];
- if (!threadCheckLevel)
- return;
-
- if ([threadCheckLevel isEqualToString:@"None"])
- newBehavior = NoThreadCheck;
- else if ([threadCheckLevel isEqualToString:@"Exception"])
- newBehavior = RaiseExceptionOnThreadViolation;
- else if ([threadCheckLevel isEqualToString:@"Log"])
- newBehavior = LogOnThreadViolation;
- else if ([threadCheckLevel isEqualToString:@"LogOnce"])
- newBehavior = LogOnFirstThreadViolation;
- else
- ASSERT_NOT_REACHED();
-
- threadViolationBehaviorIsDefault = false;
-
- for (unsigned i = 0; i < MaximumThreadViolationRound; ++i)
- threadViolationBehavior[i] = newBehavior;
-}
-
-void setDefaultThreadViolationBehavior(ThreadViolationBehavior behavior, ThreadViolationRound round)
-{
- ASSERT(round < MaximumThreadViolationRound);
- if (round >= MaximumThreadViolationRound)
- return;
- if (!didReadThreadViolationBehaviorFromUserDefaults)
- readThreadViolationBehaviorFromUserDefaults();
- if (threadViolationBehaviorIsDefault)
- threadViolationBehavior[round] = behavior;
-}
-
-void reportThreadViolation(const char* function, ThreadViolationRound round)
-{
- ASSERT(round < MaximumThreadViolationRound);
- if (round >= MaximumThreadViolationRound)
- return;
- if (!didReadThreadViolationBehaviorFromUserDefaults)
- readThreadViolationBehaviorFromUserDefaults();
- if (threadViolationBehavior[round] == NoThreadCheck)
- return;
- if (pthread_main_np())
- return;
- WebCoreReportThreadViolation(function, round);
-}
-
-} // namespace WebCore
-
-// Split out the actual reporting of the thread violation to make it easier to set a breakpoint
-void WebCoreReportThreadViolation(const char* function, WebCore::ThreadViolationRound round)
-{
- using namespace WebCore;
-
- ASSERT(round < MaximumThreadViolationRound);
- if (round >= MaximumThreadViolationRound)
- return;
-
- DEFINE_STATIC_LOCAL(HashSet<String>, loggedFunctions, ());
- switch (threadViolationBehavior[round]) {
- case NoThreadCheck:
- break;
- case LogOnFirstThreadViolation:
- if (loggedFunctions.add(function).second) {
- NSLog(@"WebKit Threading Violation - %s called from secondary thread", function);
- NSLog(@"Additional threading violations for this function will not be logged.");
- }
- break;
- case LogOnThreadViolation:
- NSLog(@"WebKit Threading Violation - %s called from secondary thread", function);
- break;
- case RaiseExceptionOnThreadViolation:
- [NSException raise:@"WebKitThreadingException" format:@"%s was called from a secondary thread", function];
- break;
- }
-}