PAPI_disable_component(3) PAPI PAPI_disable_component(3)NAME
PAPI_disable_component -
disables the specified component
SYNOPSIS Detailed Description
@retval ENOCMP
component does not exist
@retval ENOINIT
cannot disable as PAPI has already been initialized
@param cidx
component index of component to be disabled
@par Examples:
int cidx, result;
cidx = PAPI_get_component_index("example");
if (cidx>=0) {
result = PAPI_disable_component(cidx);
if (result==PAPI_OK)
printf("The example component is disabled0);
}
// ...
PAPI_library_init();
*
PAPI_disable_component() allows the user to disable components before PAPI_library_init() time. This is useful if the user knows they do
not wish to use events from that component and want to reduce the PAPI library overhead.
PAPI_disable_component() must be called before PAPI_library_init().
See Also:
PAPI_get_event_component
PAPI_library_init
Author
Generated automatically by Doxygen for PAPI from the source code.
Version 5.2.0.0 Tue Jun 17 2014 PAPI_disable_component(3)
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PAPI_set_cmp_domain(3) PAPI PAPI_set_cmp_domain(3)NAME
PAPI_set_cmp_domain -
Set the default counting domain for new event sets bound to the specified component.
SYNOPSIS Detailed Description
@par C Prototype:
int PAPI_set_cmp_domain( int domain, int cidx );
@param domain one of the following constants as defined in the papi.h header file
@arg PAPI_DOM_USER User context counted
@arg PAPI_DOM_KERNEL Kernel/OS context counted
@arg PAPI_DOM_OTHER Exception/transient mode counted
@arg PAPI_DOM_SUPERVISOR Supervisor/hypervisor context counted
@arg PAPI_DOM_ALL All above contexts counted
@arg PAPI_DOM_MIN The smallest available context
@arg PAPI_DOM_MAX The largest available context
@arg PAPI_DOM_HWSPEC Something other than CPU like stuff. Individual components can decode
low order bits for more meaning
@param cidx
An integer identifier for a component.
By convention, component 0 is always the cpu component.
Return values:
PAPI_OK
PAPI_EINVAL One or more of the arguments is invalid.
PAPI_ENOCMP The argument cidx is not a valid component.
PAPI_set_cmp_domain sets the default counting domain for all new event sets in all threads, and requires an explicit component argument.
Event sets that are already in existence are not affected. To change the domain of an existing event set, please see PAPI_set_opt. The
reader should note that the domain of an event set affects only the mode in which the counter continues to run. Counts are still aggregated
for the current process, and not for any other processes in the system. Thus when requesting PAPI_DOM_KERNEL , the user is asking for
events that occur on behalf of the process, inside the kernel.
Example:
int ret;
// Initialize the library
ret = PAPI_library_init(PAPI_VER_CURRENT);
if (ret > 0 && ret != PAPI_VER_CURRENT) {
fprintf(stderr,"PAPI library version mismatch!0);
exit(1);
}
if (ret < 0) handle_error(ret);
// Set the default domain for the cpu component
ret = PAPI_set_cmp_domain(PAPI_DOM_KERNEL,0);
if (ret != PAPI_OK) handle_error(ret);
ret = PAPI_create_eventset(&EventSet);
if (ret != PAPI_OK) handle_error(ret);
*
See Also:
PAPI_set_domain PAPI_set_granularity PAPI_set_opt PAPI_get_opt
Author
Generated automatically by Doxygen for PAPI from the source code.
Version 5.2.0.0 Tue Jun 17 2014 PAPI_set_cmp_domain(3)
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