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1/*
2 * Copyright (C) 2008 Apple Inc. All Rights Reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 *    notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 *    notice, this list of conditions and the following disclaimer in the
11 *    documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#import "config.h"
27#import "ProfilerServer.h"
28
29#import "JSProfilerPrivate.h"
30#import "JSRetainPtr.h"
31#import <Foundation/Foundation.h>
32
33#if PLATFORM(IPHONE_SIMULATOR)
34#import <Foundation/NSDistributedNotificationCenter.h>
35#endif
36
37@interface ProfilerServer : NSObject {
38@private
39    NSString *_serverName;
40    unsigned _listenerCount;
41}
42+ (ProfilerServer *)sharedProfileServer;
43- (void)startProfiling;
44- (void)stopProfiling;
45@end
46
47@implementation ProfilerServer
48
49+ (ProfilerServer *)sharedProfileServer
50{
51    static ProfilerServer *sharedServer;
52    if (!sharedServer)
53        sharedServer = [[ProfilerServer alloc] init];
54    return sharedServer;
55}
56
57- (id)init
58{
59    if (!(self = [super init]))
60        return nil;
61
62    NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
63
64    NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
65    if ([defaults boolForKey:@"EnableJSProfiling"])
66        [self startProfiling];
67
68#if !PLATFORM(IPHONE) || PLATFORM(IPHONE_SIMULATOR)
69    // FIXME: <rdar://problem/6546135>
70    // The catch-all notifications
71    [[NSDistributedNotificationCenter defaultCenter] addObserver:self selector:@selector(startProfiling) name:@"ProfilerServerStartNotification" object:nil];
72    [[NSDistributedNotificationCenter defaultCenter] addObserver:self selector:@selector(stopProfiling) name:@"ProfilerServerStopNotification" object:nil];
73#endif
74
75    // The specific notifications
76    NSProcessInfo *processInfo = [NSProcessInfo processInfo];
77    _serverName = [[NSString alloc] initWithFormat:@"ProfilerServer-%d", [processInfo processIdentifier]];
78
79#if !PLATFORM(IPHONE) || PLATFORM(IPHONE_SIMULATOR)
80    // FIXME: <rdar://problem/6546135>
81    [[NSDistributedNotificationCenter defaultCenter] addObserver:self selector:@selector(startProfiling) name:[_serverName stringByAppendingString:@"-Start"] object:nil];
82    [[NSDistributedNotificationCenter defaultCenter] addObserver:self selector:@selector(stopProfiling) name:[_serverName stringByAppendingString:@"-Stop"] object:nil];
83#endif
84
85    [pool drain];
86
87    return self;
88}
89
90- (void)startProfiling
91{
92    if (++_listenerCount > 1)
93        return;
94    JSRetainPtr<JSStringRef> profileName(Adopt, JSStringCreateWithUTF8CString([_serverName UTF8String]));
95    JSStartProfiling(0, profileName.get());
96}
97
98- (void)stopProfiling
99{
100    if (!_listenerCount || --_listenerCount > 0)
101        return;
102    JSRetainPtr<JSStringRef> profileName(Adopt, JSStringCreateWithUTF8CString([_serverName UTF8String]));
103    JSEndProfiling(0, profileName.get());
104}
105
106@end
107
108namespace JSC {
109
110void startProfilerServerIfNeeded()
111{
112    [ProfilerServer sharedProfileServer];
113}
114
115} // namespace JSC
116