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ScriptInputSource.m
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168 lines (139 loc) · 4.85 KB
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/*
* Copyright (C) 2014 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 INC. AND ITS 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 APPLE INC. OR ITS 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 "ScriptInputSource.h"
#import <JavaScriptCore/JavaScriptCore.h>
#import <pthread.h>
void scriptInputSourceScheduleRoutine (void *info, CFRunLoopRef runLoop, CFStringRef mode)
{
}
void scriptInputSourcePerformRoutine (void *info)
{
ScriptInputSource* source = (__bridge ScriptInputSource *)info;
[source didReceiveSignal];
}
void scriptInputSourceCancelRoutine (void *info, CFRunLoopRef runLoop, CFStringRef mode)
{
}
@implementation ScriptInputSource {
CFRunLoopSourceRef m_source;
CFRunLoopRef m_runLoop;
NSMutableArray *m_inputQueue;
pthread_mutex_t m_inputLock;
NSMutableArray *m_outputQueue;
pthread_mutex_t m_outputLock;
pthread_cond_t m_outputCondition;
JSContext *m_context;
}
- (id)initWithContext:(JSContext *)context
{
self = [super init];
if (!self)
return nil;
CFRunLoopSourceContext sourceContext = {
0,
(__bridge void *)(self),
NULL, NULL, NULL, NULL, NULL,
scriptInputSourceScheduleRoutine,
scriptInputSourceCancelRoutine,
scriptInputSourcePerformRoutine
};
m_source = CFRunLoopSourceCreate(NULL, 0, &sourceContext);
m_inputQueue = [NSMutableArray array];
m_outputQueue = [NSMutableArray array];
m_context = context;
pthread_mutex_init(&m_inputLock, NULL);
pthread_mutex_init(&m_outputLock, NULL);
pthread_cond_init(&m_outputCondition, NULL);
return self;
}
- (void)dealloc
{
pthread_mutex_destroy(&m_inputLock);
pthread_mutex_destroy(&m_outputLock);
pthread_cond_destroy(&m_outputCondition);
}
- (void)addToCurrentRunLoop
{
m_runLoop = CFRunLoopGetCurrent();
CFRunLoopAddSource(m_runLoop, m_source, kCFRunLoopDefaultMode);
}
- (void)removeFromRemoteRunLoop
{
CFRunLoopRemoveSource(m_runLoop, m_source, kCFRunLoopDefaultMode);
}
- (void)didReceiveScript:(NSString *)script
{
JSValue *result = [m_context evaluateScript:script];
if (m_context.exception) {
result = m_context.exception;
m_context.exception = nil;
}
pthread_mutex_lock(&m_outputLock);
[m_outputQueue addObject:result];
pthread_cond_signal(&m_outputCondition);
pthread_mutex_unlock(&m_outputLock);
}
- (void)didReceiveSignal
{
pthread_mutex_lock(&m_inputLock);
while ([m_inputQueue count]) {
NSString *nextScript = [m_inputQueue objectAtIndex:0];
[m_inputQueue removeObjectAtIndex:0];
pthread_mutex_unlock(&m_inputLock);
[self didReceiveScript:nextScript];
pthread_mutex_lock(&m_inputLock);
}
pthread_mutex_unlock(&m_inputLock);
}
- (JSValue *)runScriptRemotely:(NSString *)script
{
pthread_mutex_lock(&m_inputLock);
[m_inputQueue addObject:script];
pthread_mutex_unlock(&m_inputLock);
CFRunLoopSourceSignal(m_source);
CFRunLoopWakeUp(m_runLoop);
pthread_mutex_lock(&m_outputLock);
while (![m_outputQueue count])
pthread_cond_wait(&m_outputCondition, &m_outputLock);
JSValue *result = [m_outputQueue objectAtIndex:0];
[m_outputQueue removeObjectAtIndex:0];
pthread_mutex_unlock(&m_outputLock);
return result;
}
- (void)finishAsyncCallback:(JSValue *)callback withResult:(int)result
{
pthread_mutex_lock(&m_inputLock);
[m_inputQueue addObject:^{
if (result) {
[callback callWithArguments:@[]];
return;
}
[callback callWithArguments:@[]];
}];
pthread_mutex_unlock(&m_inputLock);
CFRunLoopSourceSignal(m_source);
CFRunLoopWakeUp(m_runLoop);
}
@end