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+.\" Copyright (c) 2001-2003 The Open Group, All Rights Reserved
+.TH "POSIX_TRACE_CLEAR" 3P 2003 "IEEE/The Open Group" "POSIX Programmer's Manual"
+.\" posix_trace_clear
+.SH PROLOG
+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.
+.SH NAME
+posix_trace_clear \- clear trace stream and trace log (\fBTRACING\fP)
+.SH SYNOPSIS
+.LP
+\fB#include <sys/types.h>
+.br
+#include <trace.h>
+.br
+.sp
+int posix_trace_clear(trace_id_t\fP \fItrid\fP\fB); \fP
+\fB
+.br
+\fP
+.SH DESCRIPTION
+.LP
+The \fIposix_trace_clear\fP() function shall reinitialize the trace
+stream identified by the argument \fItrid\fP as if it were
+returning from the \fIposix_trace_create\fP() function, except that
+the same
+allocated resources shall be reused, the mapping of trace event type
+identifiers to trace event names shall be unchanged, and the
+trace stream status shall remain unchanged (that is, if it was running,
+it remains running and if it was suspended, it remains
+suspended).
+.LP
+All trace events in the trace stream recorded before the call to \fIposix_trace_clear\fP()
+shall be lost. The
+\fIposix_stream_full_status\fP status shall be set to POSIX_TRACE_NOT_FULL.
+There is no guarantee that all trace events that
+occurred during the \fIposix_trace_clear\fP() call are recorded; the
+behavior with respect to trace points that may occur during
+this call is unspecified.
+.LP
+If the Trace Log option is supported and the trace stream has been
+created with a log, the \fIposix_trace_clear\fP() function
+shall reinitialize the trace stream with the same behavior as if the
+trace stream was created without the log, plus it shall
+reinitialize the trace log associated with the trace stream identified
+by the argument \fItrid\fP as if it were returning from the
+\fIposix_trace_create_withlog\fP() function, except that the same
+allocated resources, for the trace log, may be reused and the associated
+trace stream status remains unchanged. The first trace
+event recorded in the trace log after the call to \fIposix_trace_clear\fP()
+shall be the same as the first trace event recorded in
+the active trace stream after the call to \fIposix_trace_clear\fP().
+The \fIposix_log_full_status\fP status shall be set to
+POSIX_TRACE_NOT_FULL. There is no guarantee that all trace events
+that occurred during the \fIposix_trace_clear\fP() call are
+recorded in the trace log; the behavior with respect to trace points
+that may occur during this call is unspecified. If the log
+full policy is POSIX_TRACE_APPEND, the effect of a call to this function
+is unspecified for the trace log associated with the trace
+stream identified by the \fItrid\fP argument.
+.SH RETURN VALUE
+.LP
+Upon successful completion, the \fIposix_trace_clear\fP() function
+shall return a value of zero. Otherwise, it shall return the
+corresponding error number.
+.SH ERRORS
+.LP
+The \fIposix_trace_clear\fP() function shall fail if:
+.TP 7
+.B EINVAL
+The value of the \fItrid\fP argument does not correspond to an active
+trace stream.
+.sp
+.LP
+\fIThe following sections are informative.\fP
+.SH EXAMPLES
+.LP
+None.
+.SH APPLICATION USAGE
+.LP
+None.
+.SH RATIONALE
+.LP
+None.
+.SH FUTURE DIRECTIONS
+.LP
+None.
+.SH SEE ALSO
+.LP
+\fIposix_trace_attr_init\fP(), \fIposix_trace_create\fP(), \fIposix_trace_flush\fP(),
+\fIposix_trace_get_attr\fP(), the Base Definitions volume of IEEE\ Std\ 1003.1-2001,
+\fI<sys/types.h>\fP, \fI<trace.h>\fP
+.SH COPYRIGHT
+Portions of this text are reprinted and reproduced in electronic form
+from IEEE Std 1003.1, 2003 Edition, Standard for Information Technology
+-- Portable Operating System Interface (POSIX), The Open Group Base
+Specifications Issue 6, Copyright (C) 2001-2003 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 at
+http://www.opengroup.org/unix/online.html .