.TH "PAPI_set_multiplex" 3 "Thu Dec 14 2023" "Version 7.1.0.0" "PAPI" \" -*- nroff -*-
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.SH NAME
PAPI_set_multiplex \- Convert a standard event set to a multiplexed event set\&.  

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

.PP
\fBC Interface:\fP
.RS 4
#include <\fBpapi\&.h\fP> 
.br
 int \fBPAPI_set_multiplex( int  EventSet )\fP;
.RE
.PP
\fBParameters\fP
.RS 4
\fIEventSet\fP an integer handle for a PAPI event set as created by \fBPAPI_create_eventset\fP
.RE
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\fBReturn values\fP
.RS 4
\fIPAPI_OK\fP 
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\fIPAPI_EINVAL\fP -- One or more of the arguments is invalid, or the EventSet is already multiplexed\&. 
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\fIPAPI_ENOCMP\fP -- The EventSet specified is not yet bound to a component\&. 
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\fIPAPI_ENOEVST\fP -- The EventSet specified does not exist\&. 
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\fIPAPI_EISRUN\fP -- The EventSet is currently counting events\&. 
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\fIPAPI_ENOMEM\fP -- Insufficient memory to complete the operation\&.
.RE
.PP
\fBPAPI_set_multiplex\fP converts a standard PAPI event set created by a call to \fBPAPI_create_eventset\fP into an event set capable of handling multiplexed events\&. This must be done after calling \fBPAPI_multiplex_init\fP, and either \fBPAPI_add_event\fP or \fBPAPI_assign_eventset_component\fP, but prior to calling \fBPAPI_start()\fP\&.
.PP
Events can be added to an event set either before or after converting it into a multiplexed set, but the conversion must be done prior to using it as a multiplexed set\&.
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\fBNote\fP
.RS 4
Multiplexing can't be enabled until PAPI knows which component is targeted\&. Due to the late binding nature of PAPI event sets, this only happens after adding an event to an event set or explicitly binding the component with a call to \fBPAPI_assign_eventset_component\fP\&.
.RE
.PP
\fBExample:\fP
.RS 4

.PP
.nf
int EventSet = PAPI_NULL;
int ret;
 
// Create an empty EventSet
ret = PAPI_create_eventset(&EventSet);
if (ret != PAPI_OK) handle_error(ret);

// Bind it to the CPU component
ret = PAPI_assign_eventset_component(EventSet, 0);
if (ret != PAPI_OK) handle_error(ret);

// Check  current multiplex status
ret = PAPI_get_multiplex(EventSet);
if (ret == TRUE) printf("This event set is ready for multiplexing\\n\&.")
if (ret == FALSE) printf("This event set is not enabled for multiplexing\\n\&.")
if (ret < 0) handle_error(ret);

// Turn on multiplexing
ret = PAPI_set_multiplex(EventSet);
if ((ret == PAPI_EINVAL) && (PAPI_get_multiplex(EventSet) == TRUE))
  printf("This event set already has multiplexing enabled\\n");
else if (ret != PAPI_OK) handle_error(ret);

.fi
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.RE
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\fBSee also\fP
.RS 4
\fBPAPI_multiplex_init\fP 
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\fBPAPI_get_multiplex\fP 
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\fBPAPI_set_opt\fP 
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\fBPAPI_create_eventset\fP 
.RE
.PP


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