Starts a trace session.
Runtime Services Library (librts.a)
int trcstart( Argument)
char *Argument;
The trcstart subroutine starts a trace session. The Argument parameter points to a character string containing the flags invoked with the trace daemon. To specify that a generic trace session is to be started, include the -g flag.
| Item | Description |
|---|---|
| Argument | Character pointer to a string holding valid arguments from the trace daemon. |
If the trace daemon is started successfully, the channel number is returned. Channel number 0 is returned if a generic trace was not requested. If the trace daemon is not started successfully, a value of -1 is returned.
| Item | Description | |
|---|---|---|
| /dev/trace | Trace special file. |