I can get the free memory ok on the T650 but if i
allocate memory in a loop and try to get the free memory left
the value returned never changes. this is the code from palmSource.
eg:
for (i = 0; i < 100; i++)
{
Allocate some memory....
call GetOSFreeMem ().... // always return the same amount
}
/************************************************************************
Sample Code Disclaimer Copyright ) 2001 Palm, Inc. or its subsidiaries.
All rights reserved.
You may incorporate this sample code (the "Code") into your applications
for Palm OS� platform products and may use the Code to develop
such applications without restriction. The Code is provided to you on
an "AS IS" basis and the responsibility for its operation is 100% yours.
PALM, INC. AND ITS SUBSIDIARIES (COLLECTIVELY, "PALM") DISCLAIM
ALL WARRANTIES, TERMS AND CONDITIONS WITH RESPECT TO THE CODE, EXPRESS,
IMPLIED, STATUTORY OR OTHERWISE, INCLUDING WARRANTIES, TERMS OR
CONDITIONS OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE,
NONINFRINGEMENT AND SATISFACTORY QUALITY. You are not permitted to
redistribute the Code on a stand-alone basis and you may only
redistribute the Code in object code form as incorporated into your
applications. TO THE FULL EXTENT ALLOWED BY LAW, PALM ALSO EXCLUDES ANY
LIABILITY, WHETHER BASED IN CONTRACT OR TORT (INCLUDING NEGLIGENCE), FOR
INCIDENTAL, CONSEQUENTIAL, INDIRECT, SPECIAL OR PUNITIVE DAMAGES OF ANY
KIND, OR FOR LOSS OF REVENUE OR PROFITS, LOSS OF BUSINESS, LOSS OF
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SAMPLE NAME: GetOSFreeMem function
FILE: GetOSFreeMem.c
DESCRIPTION: Determine the amount of free memory and the amount of
total memory in the current device. Results are expressed
in KB. The returned value is the amount of free memory in all
heaps other than the dynamic heap. This is very ACCURATE!
REVISION HISTORY: Name Date Description
---- ---- -----------
mt 09/19/00 initial version
mak 01/11/01 comments/dynamic memory conversion
***********************************************************************/
static UInt32 GetOSFreeMem( UInt32* totalMemoryP, UInt32* dynamicMemoryP )
{
#define memoryBlockSize (1024L)
UInt32 heapFree;
UInt32 max;
Int16 i;
Int16 nCards;
UInt16 cardNo;
UInt16 heapID;
UInt32 freeMemory = 0;
UInt32 totalMemory = 0;
UInt32 dynamicMemory = 0;
// Iterate through each card to support devices with multiple cards.
nCards = MemNumCards(); for
(cardNo = 0; cardNo < nCards; cardNo++)
{
// Iterate through the RAM heaps on a card (excludes ROM).
for (i=0; i < MemNumRAMHeaps(cardNo); i++)
{
// Obtain the ID of the heap.
heapID = MemHeapID(cardNo, i);
// If the heap is dynamic, increment the dynamic memory
total.
if (MemHeapDynamic(heapID))
{
dynamicMemory += MemHeapSize(heapID);
}
// The heap is nondynamic.
else
{
// Calculate the total memory and free memory
of the heap.
totalMemory += MemHeapSize(heapID);
MemHeapFreeBytes(heapID, &heapFree, &max);
freeMemory += heapFree;
}
}
}
// Reduce the stats to KB. Round the results.
freeMemory = freeMemory / memoryBlockSize;
totalMemory = totalMemory / memoryBlockSize;
dynamicMemory = dynamicMemory / memoryBlockSize;
if (totalMemoryP) *totalMemoryP = totalMemory;
if (dynamicMemoryP) *dynamicMemoryP = dynamicMemory;
return (freeMemory);
} // GetOSFreeMem
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