Track URLRequestContext references in a set.

net/url_request/url_request_context.cc

 // Copyright (c) 2012 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.
 
 #include "net/url_request/url_request_context.h"
 
 #include "base/compiler_specific.h"
+#include "base/debug/alias.h"
 #include "base/string_util.h"
 #include "net/base/host_resolver.h"
 #include "net/cookies/cookie_store.h"
 #include "net/ftp/ftp_transaction_factory.h"
 #include "net/http/http_transaction_factory.h"
+#include "net/url_request/url_request.h"
 
 namespace net {
 
 URLRequestContext::URLRequestContext()
     : ALLOW_THIS_IN_INITIALIZER_LIST(weak_factory_(this)),
       net_log_(NULL),
       host_resolver_(NULL),
       cert_verifier_(NULL),
       server_bound_cert_service_(NULL),
       fraudulent_certificate_reporter_(NULL),
       http_auth_handler_factory_(NULL),
       proxy_service_(NULL),
       network_delegate_(NULL),
       http_server_properties_(NULL),
       transport_security_state_(NULL),
       ftp_auth_cache_(new FtpAuthCache),
       http_transaction_factory_(NULL),
       ftp_transaction_factory_(NULL),
-      job_factory_(NULL) {
+      job_factory_(NULL),
+      url_requests_(new std::set<const URLRequest*>) {
 }
 
 void URLRequestContext::CopyFrom(URLRequestContext* other) {
   // Copy URLRequestContext parameters.
   set_net_log(other->net_log());
   set_host_resolver(other->host_resolver());
   set_cert_verifier(other->cert_verifier());
   set_server_bound_cert_service(other->server_bound_cert_service());
   set_fraudulent_certificate_reporter(other->fraudulent_certificate_reporter());
   set_http_auth_handler_factory(other->http_auth_handler_factory());
@@ skipping 14 matching lines @@
 
 void URLRequestContext::set_cookie_store(CookieStore* cookie_store) {
   cookie_store_ = cookie_store;
 }
 
 const std::string& URLRequestContext::GetUserAgent(const GURL& url) const {
   return EmptyString();
 }
 
 URLRequestContext::~URLRequestContext() {
+  int num_requests = url_requests_->size();
+  if (num_requests != 0) {
+    // We're leaking URLRequests :( Dump the URL of the first one and record how
+    // many we leaked so we have an idea of how bad it is.
+    char url_buf[128];
+    const URLRequest* request = *url_requests_->begin();
+    base::strlcpy(url_buf, request->url().spec().c_str(), arraysize(url_buf));
+    base::debug::Alias(url_buf);
+    base::debug::Alias(&num_requests);
+    CHECK(false);
+  }
 }
 
 }  // namespace net