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posix_trace_start(3p) — Linux manual page

POSIX_TRACE_START(3P)   POSIX Programmer's ManualPOSIX_TRACE_START(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_start, posix_trace_stop — trace start and stop       (TRACING)

SYNOPSIS        top

       #include <trace.h>       int posix_trace_start(trace_id_ttrid);       int posix_trace_stop (trace_id_ttrid);

DESCRIPTION        top

       Theposix_trace_start() andposix_trace_stop() functions,       respectively, shall start and stop the trace stream identified by       the argumenttrid.       The effect of calling theposix_trace_start() function shall be       recorded in the trace stream as the POSIX_TRACE_START system trace       event and the status of the trace stream shall become       POSIX_TRACE_RUNNING.  If the trace stream is in progress when this       function is called, the POSIX_TRACE_START system trace event shall       not be recorded and the trace stream shall continue to run. If the       trace stream is full, the POSIX_TRACE_START system trace event       shall not be recorded and the status of the trace stream shall not       be changed.       The effect of calling theposix_trace_stop() function shall be       recorded in the trace stream as the POSIX_TRACE_STOP system trace       event and the status of the trace stream shall become       POSIX_TRACE_SUSPENDED.  If the trace stream is suspended when this       function is called, the POSIX_TRACE_STOP system trace event shall       not be recorded and the trace stream shall remain suspended. If       the trace stream is full, the POSIX_TRACE_STOP system trace event       shall not be recorded and the status of the trace stream shall not       be changed.

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 shall fail if:EINVALThe value of the argumenttrid does not correspond to an              active trace stream and thus no trace stream was started or              stopped.EINTRThe operation was interrupted by a signal and thus the              trace stream was not necessarily started or stopped.The following sections are informative.

EXAMPLES        top

       None.

APPLICATION USAGE        top

       None.

RATIONALE        top

       None.

FUTURE DIRECTIONS        top

       Theposix_trace_start() andposix_trace_stop() functions may be       removed in a future version.

SEE ALSO        top

posix_trace_create(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_TRACE_START(3P)

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

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