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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* 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 IOActivityMonitor_h___
#define IOActivityMonitor_h___
#include "mozilla/dom/ChromeUtilsBinding.h"
#include "mozilla/Mutex.h"
#include "nsCOMPtr.h"
#include "nscore.h"
#include "nsClassHashtable.h"
#include "nsTHashMap.h"
#include "nsHashKeys.h"
#include "nsINamed.h"
#include "nsISupports.h"
#include "prinrval.h"
#include "prio.h"
#include "private/pprio.h"
#include <stdint.h>
namespace mozilla {
namespace dom {
class Promise;
}
namespace net {
#define IO_ACTIVITY_ENABLED_PREF "io.activity.enabled"
using Activities = nsTHashMap<nsCStringHashKey, dom::IOActivityDataDictionary>;
// IOActivityMonitor has several roles:
// - maintains an IOActivity per resource and updates it
// - sends a dump of the activities to a promise via RequestActivities
class IOActivityMonitor final : public nsINamed {
public:
IOActivityMonitor();
NS_DECL_THREADSAFE_ISUPPORTS
NS_DECL_NSINAMED
// initializes and destroys the singleton
static nsresult Init();
static nsresult Shutdown();
// collect amounts of data that are written/read by location
static nsresult Read(const nsACString& location, uint32_t aAmount);
static nsresult Write(const nsACString& location, uint32_t aAmount);
static nsresult MonitorFile(PRFileDesc* aFd, const char* aPath);
static nsresult MonitorSocket(PRFileDesc* aFd);
static nsresult Read(PRFileDesc* fd, uint32_t aAmount);
static nsresult Write(PRFileDesc* fd, uint32_t aAmount);
static bool IsActive();
static void RequestActivities(dom::Promise* aPromise);
private:
~IOActivityMonitor() = default;
static already_AddRefed<IOActivityMonitor> Get();
nsresult InitInternal();
nsresult ShutdownInternal();
bool IncrementActivity(const nsACString& location, uint32_t aRx,
uint32_t aTx);
nsresult WriteInternal(const nsACString& location, uint32_t aAmount);
nsresult ReadInternal(const nsACString& location, uint32_t aAmount);
void RequestActivitiesInternal(dom::Promise* aPromise);
Activities mActivities;
// protects mActivities accesses
Mutex mLock MOZ_UNANNOTATED;
};
} // namespace net
} // namespace mozilla
#endif /* IOActivityMonitor_h___ */
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