0
|
1 |
// Copyright (c) 1998-2009 Nokia Corporation and/or its subsidiary(-ies).
|
|
2 |
// All rights reserved.
|
|
3 |
// This component and the accompanying materials are made available
|
|
4 |
// under the terms of the License "Eclipse Public License v1.0"
|
|
5 |
// which accompanies this distribution, and is available
|
|
6 |
// at the URL "http://www.eclipse.org/legal/epl-v10.html".
|
|
7 |
//
|
|
8 |
// Initial Contributors:
|
|
9 |
// Nokia Corporation - initial contribution.
|
|
10 |
//
|
|
11 |
// Contributors:
|
|
12 |
//
|
|
13 |
// Description:
|
|
14 |
// e32test\mmu\freeram.h
|
|
15 |
//
|
|
16 |
//
|
|
17 |
|
|
18 |
#ifndef __FREERAM_H__
|
|
19 |
#define __FREERAM_H__
|
|
20 |
|
231
|
21 |
/**
|
|
22 |
Get the amount of free RAM in the system in bytes.
|
|
23 |
|
|
24 |
This calls the kernel HAL supervisor barrier to ensure that asynchronous cleanup in the supervisor
|
|
25 |
happens before the amount of free RAM is measured.
|
|
26 |
|
|
27 |
There is also the option to wait for upto a specified timeout for the system to become idle.
|
|
28 |
|
|
29 |
@param aIdleTimeoutMs If non-zero, the number of milliseconds to wait for the system to become idle.
|
|
30 |
|
|
31 |
@return On sucess returns the amount of free RAM in bytes, KErrTimedOut if the timeout expired
|
|
32 |
without the system becoming idle, or one of the other system-wide error codes.
|
|
33 |
*/
|
|
34 |
TInt FreeRam(TInt aIdleTimeoutMs = 0)
|
0
|
35 |
{
|
|
36 |
// wait for any async cleanup in the supervisor to finish first...
|
231
|
37 |
TInt r = UserSvr::HalFunction(EHalGroupKernel, EKernelHalSupervisorBarrier,
|
|
38 |
(TAny*)aIdleTimeoutMs, 0);
|
|
39 |
if (r != KErrNone)
|
|
40 |
return r;
|
0
|
41 |
|
|
42 |
TMemoryInfoV1Buf meminfo;
|
231
|
43 |
r = UserHal::MemoryInfo(meminfo);
|
|
44 |
if (r != KErrNone)
|
|
45 |
return r;
|
|
46 |
|
0
|
47 |
return meminfo().iFreeRamInBytes;
|
|
48 |
}
|
|
49 |
|
|
50 |
#endif
|