SrrReceive
SrrReceive — receives a message.
Syntax
#include <srripc.h>
pid_t SrrReceive( | pid_t | pid, |
| | void* | msg, |
| | size_t* | size); |
Arguments
- pid
- The process to receive a message from;
0 means from any
process.
- msg
- The buffer for the received
message.
- size
- On call, the size of the buffer for the
received message; on return, the size of the message in
the buffer.
Returns
On success, the process ID of the sender, or -1 on failure.
Description
This function performs a synchronous
Receive. Once a message has been received
the sending task is blocked until the recipient issues a reply
message using the SrrReply function.
Unlike the QNX version of this function (Receive),
the size parameter indicates how much
data has been received.
Errors
- EFAULT invalid buffer size
- EINTR the function call was interrupted by a signal
- ESRCH the process ID does not exist
