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/*
* Copyright (C) 2010 Google 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:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "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 THE COPYRIGHT
* OWNER 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.
*/
#include "config.h"
#include "TestShell.h"
#include "webkit/support/webkit_support.h"
#import <AppKit/AppKit.h>
// A class to be the target/selector of the "watchdog" thread that ensures
// pages timeout if they take too long and tells the test harness via stdout.
@interface WatchDogTarget : NSObject {
@private
NSTimeInterval _timeout;
}
// |timeout| is in seconds
- (id)initWithTimeout:(NSTimeInterval)timeout;
// serves as the "run" method of a NSThread.
- (void)run:(id)sender;
@end
@implementation WatchDogTarget
- (id)initWithTimeout:(NSTimeInterval)timeout
{
if ((self = [super init]))
_timeout = timeout;
return self;
}
- (void)run:(id)ignore
{
NSAutoreleasePool* pool = [[NSAutoreleasePool alloc] init];
// check for debugger, just bail if so. We don't want the timeouts hitting
// when we're trying to track down an issue.
if (webkit_support::BeingDebugged())
return;
NSThread* currentThread = [NSThread currentThread];
// Wait to be cancelled. If we are that means the test finished. If it hasn't,
// then we need to tell the layout script we timed out and start again.
NSDate* limitDate = [NSDate dateWithTimeIntervalSinceNow:_timeout];
while ([(NSDate*)[NSDate date] compare:limitDate] == NSOrderedAscending &&
![currentThread isCancelled]) {
// sleep for a small increment then check again
NSDate* incrementDate = [NSDate dateWithTimeIntervalSinceNow:1.0];
[NSThread sleepUntilDate:incrementDate];
}
if (![currentThread isCancelled]) {
// Print a warning to be caught by the layout-test script.
// Note: the layout test driver may or may not recognize
// this as a timeout.
puts("#TEST_TIMED_OUT\n");
puts("#EOF\n");
fflush(stdout);
exit(0);
}
[pool release];
}
@end
void TestShell::waitTestFinished()
{
ASSERT(!m_testIsPending);
m_testIsPending = true;
// Create a watchdog thread which just sets a timer and
// kills the process if it times out. This catches really
// bad hangs where the shell isn't coming back to the
// message loop. If the watchdog is what catches a
// timeout, it can't do anything except terminate the test
// shell, which is unfortunate.
// Windows multiplies by 2.5, but that causes us to run for far, far too
// long. We use the passed value and let the scripts flag override
// the value as needed.
NSTimeInterval timeoutSeconds = layoutTestTimeoutForWatchDog() / 1000;
WatchDogTarget* watchdog = [[[WatchDogTarget alloc]
initWithTimeout:timeoutSeconds] autorelease];
NSThread* thread = [[NSThread alloc] initWithTarget:watchdog
selector:@selector(run:)
object:nil];
[thread start];
// TestFinished() will post a quit message to break this loop when the page
// finishes loading.
while (m_testIsPending)
webkit_support::RunMessageLoop();
// Tell the watchdog that we're finished. No point waiting to re-join, it'll
// die on its own.
[thread cancel];
[thread release];
}
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