зеркало из https://github.com/mozilla/gecko-dev.git
84 строки
2.4 KiB
C++
84 строки
2.4 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef IOActivityMonitor_h___
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#define IOActivityMonitor_h___
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#include "mozilla/dom/ChromeUtilsBinding.h"
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#include "mozilla/Mutex.h"
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#include "nsCOMPtr.h"
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#include "nscore.h"
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#include "nsClassHashtable.h"
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#include "nsTHashMap.h"
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#include "nsHashKeys.h"
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#include "nsINamed.h"
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#include "nsISupports.h"
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#include "prinrval.h"
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#include "prio.h"
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#include "private/pprio.h"
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#include <stdint.h>
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namespace mozilla {
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namespace dom {
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class Promise;
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}
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namespace net {
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#define IO_ACTIVITY_ENABLED_PREF "io.activity.enabled"
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using Activities = nsTHashMap<nsCStringHashKey, dom::IOActivityDataDictionary>;
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// IOActivityMonitor has several roles:
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// - maintains an IOActivity per resource and updates it
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// - sends a dump of the activities to a promise via RequestActivities
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class IOActivityMonitor final : public nsINamed {
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public:
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IOActivityMonitor();
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NS_DECL_THREADSAFE_ISUPPORTS
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NS_DECL_NSINAMED
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// initializes and destroys the singleton
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static nsresult Init();
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static nsresult Shutdown();
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// collect amounts of data that are written/read by location
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static nsresult Read(const nsACString& location, uint32_t aAmount);
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static nsresult Write(const nsACString& location, uint32_t aAmount);
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static nsresult MonitorFile(PRFileDesc* aFd, const char* aPath);
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static nsresult MonitorSocket(PRFileDesc* aFd);
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static nsresult Read(PRFileDesc* fd, uint32_t aAmount);
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static nsresult Write(PRFileDesc* fd, uint32_t aAmount);
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static bool IsActive();
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static void RequestActivities(dom::Promise* aPromise);
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private:
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~IOActivityMonitor() = default;
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static already_AddRefed<IOActivityMonitor> Get();
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nsresult InitInternal();
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nsresult ShutdownInternal();
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bool IncrementActivity(const nsACString& location, uint32_t aRx,
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uint32_t aTx);
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nsresult WriteInternal(const nsACString& location, uint32_t aAmount);
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nsresult ReadInternal(const nsACString& location, uint32_t aAmount);
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void RequestActivitiesInternal(dom::Promise* aPromise);
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Activities mActivities;
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// protects mActivities accesses
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Mutex mLock MOZ_UNANNOTATED;
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};
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} // namespace net
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} // namespace mozilla
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#endif /* IOActivityMonitor_h___ */
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