1 /* Here to keep the libspl build happy */
2 
3 #ifndef _LIBSPL_SPL_TRACE_H
4 #define	_LIBSPL_SPL_TRACE_H
5 
6 /*
7  * The set-error SDT probe is extra static, in that we declare its fake
8  * function literally, rather than with the DTRACE_PROBE1() macro.  This is
9  * necessary so that SET_ERROR() can evaluate to a value, which wouldn't
10  * be possible if it required multiple statements (to declare the function
11  * and then call it).
12  *
13  * SET_ERROR() uses the comma operator so that it can be used without much
14  * additional code.  For example, "return (EINVAL);" becomes
15  * "return (SET_ERROR(EINVAL));".  Note that the argument will be evaluated
16  * twice, so it should not have side effects (e.g. something like:
17  * "return (SET_ERROR(log_error(EINVAL, info)));" would log the error twice).
18  */
19 #undef SET_ERROR
20 #define	SET_ERROR(err) \
21 	(__set_error(__FILE__, __func__, __LINE__, err), err)
22 
23 
24 #endif
25