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posix_trace_eventset_add(3p) — Linux manual page

POSIX_TR...TSET_ADD(3P) POSIX Programmer's ManualPOSIX_TR...TSET_ADD(3P)

PROLOG        top

       This manual page is part of the POSIX Programmer's Manual.  The       Linux implementation of this interface may differ (consult the       corresponding Linux manual page for details of Linux behavior), or       the interface may not be implemented on Linux.

NAME        top

       posix_trace_eventset_add, posix_trace_eventset_del,       posix_trace_eventset_empty, posix_trace_eventset_fill,       posix_trace_eventset_ismember — manipulate trace event type sets       (TRACING)

SYNOPSIS        top

       #include <trace.h>       int posix_trace_eventset_add(trace_event_id_tevent_id,           trace_event_set_t *set);       int posix_trace_eventset_del(trace_event_id_tevent_id,           trace_event_set_t *set);       int posix_trace_eventset_empty(trace_event_set_t *set);       int posix_trace_eventset_fill(trace_event_set_t *set, intwhat);       int posix_trace_eventset_ismember(trace_event_id_tevent_id,           const trace_event_set_t *restrictset, int *restrictismember);

DESCRIPTION        top

       These  primitives  manipulate  sets  of  trace  event  types. They       operate on data objects addressable by the application, not on the       current trace event filter of any trace stream.       Theposix_trace_eventset_add()   andposix_trace_eventset_del()       functions,  respectively, shall add or delete the individual trace       event type specified by the value of the argumentevent_id  to  or       from  the  trace  event  type  set pointed to by the argumentset.       Adding a trace event type already in the set or deleting  a  trace       event type not in the set shall not be considered an error.       Theposix_trace_eventset_empty()  function  shall  initialize the       trace event type set pointed to by theset argument such that  all       trace event types defined, both system and user, shall be excluded       from the set.       Theposix_trace_eventset_fill()  function  shall  initialize  the       trace event type set pointed to by the argumentset, such that the       set of trace event types defined by the  argumentwhat  shall  be       included  in the set. The value of the argumentwhat shall consist       of one of the  following  values,  as  defined  in  the<trace.h>       header:       POSIX_TRACE_WOPID_EVENTS             All the process-independent implementation-defined system             trace event types are included in the set.       POSIX_TRACE_SYSTEM_EVENTS             All the implementation-defined system trace event types are             included in the set, as are those defined in POSIX.1‐2008.       POSIX_TRACE_ALL_EVENTS             All trace event types defined, both system and user, are             included in the set.       Applications shall call eitherposix_trace_eventset_empty() orposix_trace_eventset_fill() at least once for each object of typetrace_event_set_tprior to any other use of that object. If such       an object is not initialized in this way, but is nonetheless       supplied as an argument to any of theposix_trace_eventset_add(),posix_trace_eventset_del(), orposix_trace_eventset_ismember()       functions, the results are undefined.       Theposix_trace_eventset_ismember() function shall test whether       the trace event type specified by the value of the argumentevent_id is a member of the set pointed to by the argumentset.       The value returned in the object pointed to byismember argument       is zero if the trace event type identifier is not a member of the       set and a value different from zero if it is a member of the set.

RETURN VALUE        top

       Upon successful completion, these functions shall return a value       of zero. Otherwise, they shall return the corresponding error       number.

ERRORS        top

       These functions may fail if:EINVALThe value of one of the arguments is invalid.The following sections are informative.

EXAMPLES        top

       None.

APPLICATION USAGE        top

       None.

RATIONALE        top

       None.

FUTURE DIRECTIONS        top

       Theposix_trace_eventset_add(),posix_trace_eventset_del(),posix_trace_eventset_empty(),posix_trace_eventset_fill(), andposix_trace_eventset_ismember() functions may be removed in a       future version.

SEE ALSO        top

posix_trace_eventid_equal(3p),posix_trace_get_filter(3p)       The Base Definitions volume of POSIX.1‐2017,trace.h(0p)

COPYRIGHT        top

       Portions of this text are reprinted and reproduced in electronic       form from IEEE Std 1003.1-2017, Standard for Information       Technology -- Portable Operating System Interface (POSIX), The       Open Group Base Specifications Issue 7, 2018 Edition, Copyright       (C) 2018 by the Institute of Electrical and Electronics Engineers,       Inc and The Open Group.  In the event of any discrepancy between       this version and the original IEEE and The Open Group Standard,       the original IEEE and The Open Group Standard is the referee       document. The original Standard can be obtained online athttp://www.opengroup.org/unix/online.html .       Any typographical or formatting errors that appear in this page       are most likely to have been introduced during the conversion of       the source files to man page format. To report such errors, seehttps://www.kernel.org/doc/man-pages/reporting_bugs.html .IEEE/The Open Group                2017POSIX_TR...TSET_ADD(3P)

Pages that refer to this page:trace.h(0p), posix_trace_get_filter(3p)

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