trace_logb()
QNX SDP8.0C Library ReferenceAPIDeveloper
Insert a user combine trace event
Synopsis:
#include <sys/neutrino.h>
#include <sys/trace.h>
int trace_logb( int code,
const void *buf,
size_t nbytes );
Arguments:
- code
- The event code, which must be in the range from _NTO_TRACE_USERFIRST through _NTO_TRACE_USERLAST.
- data
- A pointer to the data to include with the event.
- nbytes
- The length of the data, in bytes. The function converts this value into the number of 32-bit integers.
Library:
libc
Use the -l c option to qcc to link against this library. This library is usually included automatically.
Description:
The trace_() function calls TraceEvent() to insert a user combine event of class _NTO_TRACE_USER, and of the type specified by code.
Returns:
- 0
- Success.
- -1
- An error occurred (errno is set).
Errors:
- ENOMEM
- Insufficient memory to complete the operation.
Classification:
| Safety: | |
|---|---|
| Cancellation point | No |
| Signal handler | Yes |
| Thread | Yes |
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