dom/media/systemservices/LoadMonitor.h
author Nathan Froyd <froydnj@mozilla.com>
Wed, 07 Oct 2015 16:50:25 -0400
changeset 266617 91d4539e00cecb658604e021675a923c60ef3235
parent 266613 1f51d1614b9a58e41dd3a1bf2dc6aad34dbb2170
child 266639 41dea9df27ed995f8315ab4318c187a617937664
permissions -rw-r--r--
Bug 1207245 - part 6 - rename nsRefPtr<T> to RefPtr<T>; r=ehsan; a=Tomcat The bulk of this commit was generated with a script, executed at the top level of a typical source code checkout. The only non-machine-generated part was modifying MFBT's moz.build to reflect the new naming. # The main substitution. find . -name '*.cpp' -o -name '*.cc' -o -name '*.h' -o -name '*.mm' -o -name '*.idl'| \ xargs perl -p -i -e ' s/nsRefPtr\.h/RefPtr\.h/g; # handle includes s/nsRefPtr ?</RefPtr</g; # handle declarations and variables ' # Handle a special friend declaration in gfx/layers/AtomicRefCountedWithFinalize.h. perl -p -i -e 's/::nsRefPtr;/::RefPtr;/' gfx/layers/AtomicRefCountedWithFinalize.h # Handle nsRefPtr.h itself, a couple places that define constructors # from nsRefPtr, and code generators specially. We do this here, rather # than indiscriminantly s/nsRefPtr/RefPtr/, because that would rename # things like nsRefPtrHashtable. perl -p -i -e 's/nsRefPtr/RefPtr/g' \ mfbt/nsRefPtr.h \ xpcom/glue/nsCOMPtr.h \ xpcom/base/OwningNonNull.h \ ipc/ipdl/ipdl/lower.py \ ipc/ipdl/ipdl/builtin.py \ dom/bindings/Codegen.py \ python/lldbutils/lldbutils/utils.py # In our indiscriminate substitution above, we renamed # nsRefPtrGetterAddRefs, the class behind getter_AddRefs. Fix that up. find . -name '*.cpp' -o -name '*.h' -o -name '*.idl' | \ xargs perl -p -i -e 's/nsRefPtrGetterAddRefs/RefPtrGetterAddRefs/g' if [ -d .git ]; then git mv mfbt/nsRefPtr.h mfbt/RefPtr.h else hg mv mfbt/nsRefPtr.h mfbt/RefPtr.h fi

/* -*- Mode: C++; tab-width: 50; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#ifndef _LOADMONITOR_H_
#define _LOADMONITOR_H_

#include "mozilla/Mutex.h"
#include "mozilla/CondVar.h"
#include "mozilla/RefPtr.h"
#include "mozilla/Atomics.h"
#include "nsAutoPtr.h"
#include "nsCOMPtr.h"
#include "nsIThread.h"
#include "nsIObserver.h"

namespace mozilla {
class LoadInfoCollectRunner;

class LoadNotificationCallback
{
public:
    virtual void LoadChanged(float aSystemLoad, float aProcessLoad) = 0;
};

class LoadMonitor final : public nsIObserver
{
public:
    NS_DECL_THREADSAFE_ISUPPORTS
    NS_DECL_NSIOBSERVER

    explicit LoadMonitor(int aLoadUpdateInterval);

    nsresult Init(RefPtr<LoadMonitor> &self);
    void SetLoadChangeCallback(LoadNotificationCallback* aCallback);
    void Shutdown();
    float GetSystemLoad();
    float GetProcessLoad();

    friend class LoadInfoCollectRunner;

private:
    ~LoadMonitor();

    void SetProcessLoad(float load);
    void SetSystemLoad(float load);
    void FireCallbacks();

    int                  mLoadUpdateInterval;
    mozilla::Mutex       mLock;
    mozilla::CondVar     mCondVar;
    bool                 mShutdownPending;
    nsCOMPtr<nsIThread>  mLoadInfoThread;
    float                mSystemLoad;
    float                mProcessLoad;
    LoadNotificationCallback* mLoadNotificationCallback;
};

} //namespace

#endif /* _LOADMONITOR_H_ */