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.TH "PAPI_register_thread" 3 "Wed Jun 25 2025 19:30:48" "Version 7.2.0.0" "PAPI" \" -*- nroff -*-
.ad l
.nh
.SH NAME
PAPI_register_thread \- Notify PAPI that a thread has 'appeared'\&.
.SH SYNOPSIS
.br
.PP
.SH "Detailed Description"
.PP
.PP
\fBC Interface:\fP
.RS 4
#include <\fBpapi\&.h\fP>
.br
int \fBPAPI_register_thread\fP (void);
.RE
.PP
PAPI_register_thread() should be called when the user wants to force PAPI to initialize a thread that PAPI has not seen before\&.
.PP
Usually this is not necessary as PAPI implicitly detects the thread when an eventset is created or other thread local PAPI functions are called\&. However, it can be useful for debugging and performance enhancements in the run-time systems of performance tools\&.
.PP
\fBReturn values\fP
.RS 4
\fIPAPI_ENOMEM\fP Space could not be allocated to store the new thread information\&.
.br
\fIPAPI_ESYS\fP A system or C library call failed inside PAPI, see the errno variable\&.
.br
\fIPAPI_ECMP\fP Hardware counters for this thread could not be initialized\&.
.RE
.PP
\fBSee also\fP
.RS 4
\fBPAPI_unregister_thread\fP
.PP
\fBPAPI_thread_id\fP
.PP
\fBPAPI_thread_init\fP
.RE
.PP
.SH "Author"
.PP
Generated automatically by Doxygen for PAPI from the source code\&.
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