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88 lines
3.0 KiB
Plaintext
88 lines
3.0 KiB
Plaintext
.\" Copyright (c) 2001-2003 The Open Group, All Rights Reserved
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.TH "POSIX_TRACE_START" P 2003 "IEEE/The Open Group" "POSIX Programmer's Manual"
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.\" posix_trace_start
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.SH NAME
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posix_trace_start, posix_trace_stop \- trace start and stop (\fBTRACING\fP)
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.SH SYNOPSIS
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.LP
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\fB#include <trace.h>
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.br
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.sp
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int posix_trace_start(trace_id_t\fP \fItrid\fP\fB);
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.br
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int posix_trace_stop (trace_id_t\fP \fItrid\fP\fB); \fP
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\fB
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.br
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\fP
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.SH DESCRIPTION
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.LP
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The \fIposix_trace_start\fP() and \fIposix_trace_stop\fP() functions,
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respectively, shall start and stop the trace stream
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identified by the argument \fItrid\fP.
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.LP
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The effect of calling the \fIposix_trace_start\fP() function shall
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be recorded in the trace stream as the POSIX_TRACE_START
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system trace event and the status of the trace stream shall become
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POSIX_TRACE_RUNNING. If the trace stream is in progress when
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this function is called, the POSIX_TRACE_START system trace event
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shall not be recorded and the trace stream shall continue to run.
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If the trace stream is full, the POSIX_TRACE_START system trace event
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shall not be recorded and the status of the trace stream
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shall not be changed.
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.LP
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The effect of calling the \fIposix_trace_stop\fP() function shall
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be recorded in the trace stream as the POSIX_TRACE_STOP
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system trace event and the status of the trace stream shall become
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POSIX_TRACE_SUSPENDED. If the trace stream is suspended when
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this function is called, the POSIX_TRACE_STOP system trace event shall
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not be recorded and the trace stream shall remain suspended.
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If the trace stream is full, the POSIX_TRACE_STOP system trace event
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shall not be recorded and the status of the trace stream shall
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not be changed.
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.SH RETURN VALUE
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.LP
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Upon successful completion, these functions shall return a value of
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zero. Otherwise, they shall return the corresponding error
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number.
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.SH ERRORS
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.LP
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These functions shall fail if:
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.TP 7
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.B EINVAL
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The value of the argument \fItrid\fP does not correspond to an active
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trace stream and thus no trace stream was started or
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stopped.
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.TP 7
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.B EINTR
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The operation was interrupted by a signal and thus the trace stream
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was not necessarily started or stopped.
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.sp
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.LP
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\fIThe following sections are informative.\fP
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.SH EXAMPLES
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.LP
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None.
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.SH APPLICATION USAGE
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.LP
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None.
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.SH RATIONALE
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.LP
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None.
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.SH FUTURE DIRECTIONS
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.LP
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None.
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.SH SEE ALSO
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.LP
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\fIposix_trace_create\fP() , the Base Definitions volume of
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IEEE\ Std\ 1003.1-2001, \fI<trace.h>\fP
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.SH COPYRIGHT
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Portions of this text are reprinted and reproduced in electronic form
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from IEEE Std 1003.1, 2003 Edition, Standard for Information Technology
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-- Portable Operating System Interface (POSIX), The Open Group Base
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Specifications Issue 6, Copyright (C) 2001-2003 by the Institute of
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Electrical and Electronics Engineers, Inc and The Open Group. In the
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event of any discrepancy between this version and the original IEEE and
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The Open Group Standard, the original IEEE and The Open Group Standard
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is the referee document. The original Standard can be obtained online at
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http://www.opengroup.org/unix/online.html .
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