Add net to the repository.

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@14 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 117 insertions, 0 deletions

diff --git a/net/url_request/url_request_job_tracker.h b/net/url_request/url_request_job_tracker.h
new file mode 100644
index 0000000..ca5a380
--- /dev/null
+++ b/net/url_request/url_request_job_tracker.h
@@ -0,0 +1,117 @@
+// Copyright 2008, Google 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:
+//
+//    * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//    * 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.
+//    * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT
+// OWNER OR 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.
+
+#ifndef BASE_URL_REQUEST_URL_REQUEST_JOB_TRACKER_H__
+#define BASE_URL_REQUEST_URL_REQUEST_JOB_TRACKER_H__
+
+#include <vector>
+
+#include "base/observer_list.h"
+#include "net/url_request/url_request_status.h"
+
+class URLRequestJob;
+class GURL;
+
+// This class maintains a list of active URLRequestJobs for debugging purposes.
+// This allows us to warn on leaked jobs and also allows an observer to track
+// what is happening, for example, for the network status monitor.
+//
+// NOTE: URLRequest is single-threaded, so this class should only be used on
+// the same thread where all of the application's URLRequest calls are made.
+//
+class URLRequestJobTracker {
+ public:
+  typedef std::vector<URLRequestJob*> JobList;
+  typedef JobList::const_iterator JobIterator;
+
+  // The observer's methods are called on the thread that called AddObserver.
+  class JobObserver {
+   public:
+    // Called after the given job has been added to the list
+    virtual void OnJobAdded(URLRequestJob* job) = 0;
+
+    // Called after the given job has been removed from the list
+    virtual void OnJobRemoved(URLRequestJob* job) = 0;
+
+    // Called when the given job has completed, before notifying the request
+    virtual void OnJobDone(URLRequestJob* job,
+                           const URLRequestStatus& status) = 0;
+
+    // Called when the given job is about to follow a redirect to the given
+    // new URL. The redirect type is given in status_code
+    virtual void OnJobRedirect(URLRequestJob* job, const GURL& location,
+                               int status_code) = 0;
+
+    // Called when a new chunk of bytes has been read for the given job. The
+    // byte count is the number of bytes for that read event only.
+    virtual void OnBytesRead(URLRequestJob* job, int byte_count) = 0;
+  };
+
+  URLRequestJobTracker();
+  ~URLRequestJobTracker();
+
+  // adds or removes an observer from the list.  note, these methods should
+  // only be called on the same thread where URLRequest objects are used.
+  void AddObserver(JobObserver* observer) {
+    observers_.AddObserver(observer);
+  }
+  void RemoveObserver(JobObserver* observer) {
+    observers_.RemoveObserver(observer);
+  }
+
+  // adds or removes the job from the active list, should be called by the
+  // job constructor and destructor. Note: don't use "AddJob" since that
+  // is #defined by windows.h :(
+  void AddNewJob(URLRequestJob* job);
+  void RemoveJob(URLRequestJob* job);
+
+  // Job status change notifications
+  void OnJobDone(URLRequestJob* job, const URLRequestStatus& status);
+  void OnJobRedirect(URLRequestJob* job, const GURL& location,
+                     int status_code);
+
+  // Bytes read notifications.
+  void OnBytesRead(URLRequestJob* job, int byte_count);
+
+  // allows iteration over all active jobs
+  JobIterator begin() const {
+    return active_jobs_.begin();
+  }
+  JobIterator end() const {
+    return active_jobs_.end();
+  }
+
+ private:
+  ObserverList<JobObserver> observers_;
+  JobList active_jobs_;
+};
+
+extern URLRequestJobTracker g_url_request_job_tracker;
+
+#endif  // BASE_URL_REQUEST_URL_REQUEST_JOB_TRACKER_H__