public void MoveIn32(short bar, long barOffset, Int32[] data, int numToRead)
{
int error = AgVisa32.viMoveIn32(mSession,
bar,
(int)barOffset,
numToRead,
data);
if (error < 0)
{
AgVisa32Exception.Throw(error);
}
}
public void MoveIn8PageAligned(short bar, long barOffset, int numBytesToRead, byte[] inData, int offset)
{
IntPtr inArrayUnmanaged = (IntPtr)0;
lock ( mVirtualMemoryLock )
{
int num32BitWords = numBytesToRead / 4;
if ((numBytesToRead & 0x3) != 0)
{
num32BitWords++;
}
if (mVirtualMemorySize < num32BitWords)
{
// Need more memory ... release the current memory
if (mVirtualMemory != (IntPtr)0)
{
VirtualFree(mVirtualMemory, (UIntPtr)0, (uint)MemoryFreeType.MEM_RELEASE);
}
// NOTE: this allocation allocates memory in units of pages. It is
// assumed that the pages are evenly divisible by 8 bytes.
mVirtualMemory = VirtualAlloc((IntPtr)null,
(UIntPtr)(num32BitWords * sizeof(int)),
AllocationType.COMMIT,
MemoryProtection.READWRITE);
if (mVirtualMemory == (IntPtr)0)
{
mVirtualMemorySize = 0;
AgVisa32Exception.Throw(AgVisa32.VI_ERROR_ALLOC);
}
mVirtualMemorySize = num32BitWords;
}
int error = AgVisa32.viMoveIn32(mSession,
bar,
(int)barOffset,
num32BitWords,
inArrayUnmanaged);
if (error < 0)
{
AgVisa32Exception.Throw(error);
}
Marshal.Copy(inArrayUnmanaged, inData, offset, numBytesToRead);
}
}
public Int32[] MoveIn32(short bar, long barOffset, int numToRead)
{
Int32[] buf32 = new Int32[numToRead];
int error = AgVisa32.viMoveIn32(mSession,
bar,
(int)barOffset,
numToRead,
buf32);
if (error < 0)
{
AgVisa32Exception.Throw(error);
}
return(buf32);
}
public Int32[] MoveIn32PageAligned(short bar, long barOffset, int numToRead)
{
Int32[] inArray;
lock ( mVirtualMemoryLock )
{
if (mVirtualMemorySize < numToRead)
{
// Need more memory ... release the current memory
if (mVirtualMemory != (IntPtr)0)
{
VirtualFree(mVirtualMemory, (UIntPtr)0, (uint)MemoryFreeType.MEM_RELEASE);
}
// NOTE: this allocation allocates memory in units of pages. It is
// assumed that the pages are evenly divisible by 8 bytes.
mVirtualMemory = VirtualAlloc((IntPtr)null,
(UIntPtr)(numToRead * sizeof(int)),
AllocationType.COMMIT,
MemoryProtection.READWRITE);
if (mVirtualMemory == (IntPtr)0)
{
mVirtualMemorySize = 0;
AgVisa32Exception.Throw(AgVisa32.VI_ERROR_ALLOC);
}
mVirtualMemorySize = numToRead;
}
int error = AgVisa32.viMoveIn32(mSession,
bar,
(int)barOffset,
numToRead,
mVirtualMemory);
if (error < 0)
{
AgVisa32Exception.Throw(error);
}
inArray = new Int32[numToRead];
Marshal.Copy(mVirtualMemory, inArray, 0, numToRead);
}
return(inArray);
}
