File: PAPI_add_events.3

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.TH "PAPI_add_events" 3 "Wed Jun 25 2025 19:30:48" "Version 7.2.0.0" "PAPI" \" -*- nroff -*-
.ad l
.nh
.SH NAME
PAPI_add_events \- add multiple PAPI presets or native hardware events to an event set  

.SH SYNOPSIS
.br
.PP
.SH "Detailed Description"
.PP 

.PP
\fBC Interface:\fP
.RS 4
#include <\fBpapi\&.h\fP> 
.br
int PAPI_add_events( int  EventSet, int * EventCodes, int  number );
.RE
.PP
\fBPAPI_add_event\fP adds one event to a PAPI Event Set\&. \fBPAPI_add_events\fP does the same, but for an array of events\&. 
.br
A hardware event can be either a PAPI preset or a native hardware event code\&. For a list of PAPI preset events, see PAPI_presets or run the avail test case in the PAPI distribution\&. PAPI presets can be passed to \fBPAPI_query_event\fP to see if they exist on the underlying architecture\&. For a list of native events available on current platform, run native_avail test case in the PAPI distribution\&. For the encoding of native events, see \fBPAPI_event_name_to_code\fP to learn how to generate native code for the supported native event on the underlying architecture\&.
.PP
\fBParameters\fP
.RS 4
\fIEventSet\fP An integer handle for a PAPI Event Set as created by \fBPAPI_create_eventset\fP\&. 
.br
\fI*EventCode\fP An array of defined events\&. 
.br
\fInumber\fP An integer indicating the number of events in the array *EventCode\&. It should be noted that \fBPAPI_add_events\fP can partially succeed, exactly like \fBPAPI_remove_events\fP\&.
.RE
.PP
\fBReturn values\fP
.RS 4
\fIPositive-Integer\fP The number of consecutive elements that succeeded before the error\&. 
.br
\fIPAPI_EINVAL\fP One or more of the arguments is invalid\&. 
.br
\fIPAPI_ENOMEM\fP Insufficient memory to complete the operation\&. 
.br
\fIPAPI_ENOEVST\fP The event set specified does not exist\&. 
.br
\fIPAPI_EISRUN\fP The event set is currently counting events\&. 
.br
\fIPAPI_ECNFLCT\fP The underlying counter hardware can not count this event and other events in the event set simultaneously\&. 
.br
\fIPAPI_ENOEVNT\fP The PAPI preset is not available on the underlying hardware\&. 
.br
\fIPAPI_EBUG\fP Internal error, please send mail to the developers\&.
.RE
.PP
\fBExamples:\fP
.RS 4

.PP
.nf
int EventSet = PAPI_NULL;
unsigned int native = 0x0;
if ( PAPI_create_eventset( &EventSet ) != PAPI_OK )
handle_error( 1 );
// Add Total Instructions Executed to our EventSet
if ( PAPI_add_event( EventSet, PAPI_TOT_INS ) != PAPI_OK )
handle_error( 1 );
// Add native event PM_CYC to EventSet
if ( PAPI_event_name_to_code( "PM_CYC", &native ) != PAPI_OK )
handle_error( 1 );
if ( PAPI_add_event( EventSet, native ) != PAPI_OK )
handle_error( 1 );

.fi
.PP
.RE
.PP
.PP
\fBSee also\fP
.RS 4
\fBPAPI_cleanup_eventset\fP 
.br
\fBPAPI_destroy_eventset\fP 
.br
\fBPAPI_event_code_to_name\fP 
.br
\fBPAPI_remove_events\fP 
.br
\fBPAPI_query_event\fP 
.br
PAPI_presets 
.br
PAPI_native 
.br
\fBPAPI_remove_event\fP 
.RE
.PP


.SH "Author"
.PP 
Generated automatically by Doxygen for PAPI from the source code\&.