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// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#import "ios/chrome/browser/net/metrics_network_client_manager.h"
#import "base/ios/weak_nsobject.h"
#import "base/location.h"
#include "base/mac/bind_objc_block.h"
#include "base/mac/scoped_nsobject.h"
#include "base/metrics/histogram.h"
#import "ios/chrome/browser/net/metrics_network_client.h"
#include "ios/web/public/web_thread.h"
#include "url/gurl.h"
@interface PageLoadTimeRecord ()
@property(nonatomic, readonly) GURL url;
@property(nonatomic, readonly) base::TimeTicks creationTime;
@property(nonatomic, assign) BOOL alreadyCounted;
- (instancetype)initWithURL:(const GURL&)url time:(base::TimeTicks)time;
@end
@implementation PageLoadTimeRecord {
GURL _url;
base::TimeTicks _creationTime;
BOOL _alreadyCounted;
BOOL _dataProxyUsed;
}
@synthesize url = _url;
@synthesize creationTime = _creationTime;
@synthesize alreadyCounted = _alreadyCounted;
@synthesize dataProxyUsed = _dataProxyUsed;
- (instancetype)initWithURL:(const GURL&)url time:(base::TimeTicks)time {
if ((self = [super init])) {
_url = url;
_creationTime = time;
}
return self;
}
@end
@interface MetricsNetworkClientManager ()
// IO-thread-only methods.
- (void)handlePageLoadStarted:(const GURL&)url;
- (void)handlePageLoadCompleted;
@end
@implementation MetricsNetworkClientManager {
// Set of page load time objects created. Beyond deallocation and
// creation, should only be accessed on the IO thread.
base::scoped_nsobject<NSMutableSet> _pageLoadTimes;
// Current URL being loaded by the tab that owns this object. Only accessible
// on the IO thread.
GURL _pageURL;
}
- (instancetype)init {
if ((self = [super init])) {
_pageLoadTimes.reset([[NSMutableSet set] retain]);
}
return self;
}
- (Class)clientClass {
return [MetricsNetworkClient class];
}
#pragma mark CRWForwardingNetworkClientFactory methods
- (CRNForwardingNetworkClient*)clientHandlingRequest:
(const net::URLRequest&)request {
return [[[MetricsNetworkClient alloc] initWithManager:self] autorelease];
}
#pragma mark - public UI-thread methods
- (void)pageLoadStarted:(GURL)url {
DCHECK_CURRENTLY_ON(web::WebThread::UI);
web::WebThread::PostTask(web::WebThread::IO, FROM_HERE, base::BindBlock(^{
[self handlePageLoadStarted:url];
}));
}
- (void)pageLoadCompleted {
DCHECK_CURRENTLY_ON(web::WebThread::UI);
web::WebThread::PostTask(web::WebThread::IO, FROM_HERE, base::BindBlock(^{
[self handlePageLoadCompleted];
}));
}
#pragma mark - public IO-thread methods
- (PageLoadTimeRecord*)recordForPageLoad:(const GURL&)url
time:(base::TimeTicks)time {
DCHECK_CURRENTLY_ON(web::WebThread::IO);
base::scoped_nsobject<PageLoadTimeRecord> plt;
if (!_pageURL.spec().empty() && url == _pageURL) {
plt.reset([[PageLoadTimeRecord alloc] initWithURL:url time:time]);
[_pageLoadTimes addObject:plt];
}
return plt.get();
}
#pragma mark - IO-thread handlers for UI thread methods.
- (void)handlePageLoadStarted:(const GURL&)url {
DCHECK_CURRENTLY_ON(web::WebThread::IO);
[_pageLoadTimes removeAllObjects];
_pageURL = url;
}
- (void)handlePageLoadCompleted {
DCHECK_CURRENTLY_ON(web::WebThread::IO);
for (PageLoadTimeRecord* plt in _pageLoadTimes.get()) {
if (plt.url == _pageURL && !plt.alreadyCounted) {
plt.alreadyCounted = YES;
base::TimeDelta elapsed = base::TimeTicks::Now() - plt.creationTime;
if (plt.dataProxyUsed) {
UMA_HISTOGRAM_MEDIUM_TIMES(
"Tabs.iOS_PostRedirectPLT_DataReductionProxy", elapsed);
} else {
UMA_HISTOGRAM_MEDIUM_TIMES("Tabs.iOS_PostRedirectPLT", elapsed);
}
break;
}
}
}
@end
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