PAPI_remove_events(3)

1PAPI_remove_event(3)                 PAPI                 PAPI_remove_event(3)
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NAME

6       PAPI_remove_event  - remove PAPI preset or native hardware event from an EventSet
7       PAPI_remove_events - remove PAPI presets or native hardware events from an EventSet
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SYNOPSIS

11       C Interface
12       #include <papi.h>
13       int PAPI_remove_event(int EventSet, int EventCode);
14       int PAPI_remove_events(int EventSet, int *EventCode, int number);
15       Fortran Interface
16       #include fpapi.h
17       PAPIF_remove_event(C_INT EventSet, C_INT EventCode, C_INT check)
18       PAPIF_remove_events(C_INT EventSet, C_INT(*) EventCode, C_INT number, C_INT check)
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DESCRIPTION

22       PAPI_remove_event()  removes  a  hardware  event  to  a PAPI event set.
23       PAPI_remove_events() does the same, but for an array of hardware  event
24       codes.
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26       A hardware event can be either a PAPI Preset or a native hardware event
27       code.  For a list of PAPI preset events, see PAPI_presets(3) or run the
28       avail test case in the PAPI distribution. PAPI Presets can be passed to
29       PAPI_query_event(3) to see if they exist on  the  underlying  architec‐
30       ture.   For  a list of native events available on current platform, run
31       native_avail test case in the PAPI distribution. For  the  encoding  of
32       native  events, see PAPI_event_name_to_code(3) to learn how to generate
33       native code for the supported native event on the underlying  architec‐
34       ture."
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36       It  should  be  noted  that  PAPI_remove_events  can partially succeed,
37       exactly like PAPI_add_events.
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ARGUMENTS

41       EventSet --  an integer handle for a  PAPI  event  set  as  created  by
42       PAPI_create_eventset(3)
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44       EventCode -- a defined event such as PAPI_TOT_INS or a native event.
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46       *EventCode -- an array of defined events
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48       number  --  an  integer  indicating  the  number of events in the array
49       *EventCode
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RETURN VALUES

53       On success, these functions return PAPI_OK.  On error, a less than zero
54       error  code  is  returned  or the the number of elements that succeeded
55       before the error.
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ERRORS

59       Positive integer
60              The number of consecutive elements  that  succeeded  before  the
61              error.
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63       PAPI_EINVAL
64              One or more of the arguments is invalid.
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66       PAPI_ENOEVST
67              The EventSet specified does not exist.
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69       PAPI_EISRUN
70              The EventSet is currently counting events.
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72       PAPI_ECNFLCT
73              The  underlying  counter  hardware  can not count this event and
74              other events in the EventSet simultaneously.
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76       PAPI_ENOEVNT
77              The PAPI preset is not available on the underlying hardware.
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EXAMPLES

81       int EventSet = PAPI_NULL;
82       unsigned int native = 0x0;
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84       if (PAPI_create_eventset(&EventSet) != PAPI_OK)
85         handle_error(1);
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87       /* Add Total Instructions Executed to our EventSet */
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89       if (PAPI_add_event(EventSet, PAPI_TOT_INS) != PAPI_OK)
90         handle_error(1);
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92       /* Start counting */
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94       if (PAPI_start(EventSet) != PAPI_OK)
95         handle_error(1);
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97       /* Stop counting, ignore values */
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99       if (PAPI_stop(EventSet, NULL) != PAPI_OK)
100         handle_error(1);
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102       /* Remove event */
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104       if (PAPI_remove_event(EventSet, PAPI_TOT_INS) != PAPI_OK)
105         handle_error(1);
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BUGS

109       The vector function should take a pointer to a  length  argument  so  a
110       proper return value can be set upon partial success.
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