| /* |
| * 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 |