Source code

Revision control

Other Tools

1
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
2
*
3
* This Source Code Form is subject to the terms of the Mozilla Public
4
* License, v. 2.0. If a copy of the MPL was not distributed with this
5
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
6
7
#ifndef IOActivityMonitor_h___
8
#define IOActivityMonitor_h___
9
10
#include "mozilla/dom/ChromeUtilsBinding.h"
11
#include "nsCOMPtr.h"
12
#include "nscore.h"
13
#include "nsClassHashtable.h"
14
#include "nsDataHashtable.h"
15
#include "nsHashKeys.h"
16
#include "nsISupports.h"
17
#include "prinrval.h"
18
#include "prio.h"
19
#include "private/pprio.h"
20
#include <stdint.h>
21
22
namespace mozilla {
23
24
namespace dom {
25
class Promise;
26
}
27
28
namespace net {
29
30
#define IO_ACTIVITY_ENABLED_PREF "io.activity.enabled"
31
32
typedef nsDataHashtable<nsCStringHashKey, dom::IOActivityDataDictionary>
33
Activities;
34
35
// IOActivityMonitor has several roles:
36
// - maintains an IOActivity per resource and updates it
37
// - sends a dump of the activities to a promise via RequestActivities
38
class IOActivityMonitor final : public nsINamed {
39
public:
40
IOActivityMonitor();
41
42
NS_DECL_THREADSAFE_ISUPPORTS
43
NS_DECL_NSINAMED
44
45
// initializes and destroys the singleton
46
static nsresult Init();
47
static nsresult Shutdown();
48
49
// collect amounts of data that are written/read by location
50
static nsresult Read(const nsACString& location, uint32_t aAmount);
51
static nsresult Write(const nsACString& location, uint32_t aAmount);
52
53
static nsresult MonitorFile(PRFileDesc* aFd, const char* aPath);
54
static nsresult MonitorSocket(PRFileDesc* aFd);
55
static nsresult Read(PRFileDesc* fd, uint32_t aAmount);
56
static nsresult Write(PRFileDesc* fd, uint32_t aAmount);
57
58
static bool IsActive();
59
static void RequestActivities(dom::Promise* aPromise);
60
61
private:
62
~IOActivityMonitor() = default;
63
nsresult InitInternal();
64
nsresult ShutdownInternal();
65
bool IncrementActivity(const nsACString& location, uint32_t aRx,
66
uint32_t aTx);
67
nsresult WriteInternal(const nsACString& location, uint32_t aAmount);
68
nsresult ReadInternal(const nsACString& location, uint32_t aAmount);
69
void RequestActivitiesInternal(dom::Promise* aPromise);
70
71
Activities mActivities;
72
// protects mActivities accesses
73
Mutex mLock;
74
};
75
76
} // namespace net
77
} // namespace mozilla
78
79
#endif /* IOActivityMonitor_h___ */