tfGetZeroCopyBuffer
Table of Contents >> Programmer's Reference
| #include <trsocket.h> |
| ttUserMessage tfGetZeroCopyBuffer | ( |
| int size, | |
| char * * dataPtrPtr | |
| ); |
Function Description
This function is used to get a Zero Copy Buffer. This buffer can then be used with tfZeroCopySend() and tfZeroCopySendTo() for zero copy send functions. This is a TRUE zero copy if the device driver supports DMA sending.
Parameters
- size
- The size of the buffer to be used for the zero copy.
- dataPtrPtr
- Pointer to a pointer that is the beginning of the user's data area. This is where the user can store the data to be sent.
Returns
- Valid (ttUserMessage) pointer
- Success.
- (ttUserMessage)0
- Failure. Insufficient memory to complete the operation or (*dataPtrPtr) was invalid.
