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// +build libpfm,cgo
// Copyright 2020 Google Inc. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// Types related to handling perf events that are missing from unix package.
package perf
import "C"
import (
"io"
"unsafe"
)
// GroupReadFormat allows to read perf event's values for grouped events.
// See https://man7.org/linux/man-pages/man2/perf_event_open.2.html section "Reading results" with PERF_FORMAT_GROUP specified.
type GroupReadFormat struct {
Nr uint64 /* The number of events */
TimeEnabled uint64 /* if PERF_FORMAT_TOTAL_TIME_ENABLED */
TimeRunning uint64 /* if PERF_FORMAT_TOTAL_TIME_RUNNING */
}
type Values struct {
Value uint64 /* The value of the event */
ID uint64 /* if PERF_FORMAT_ID */
}
// pfmPerfEncodeArgT represents structure that is used to parse perf event nam
// into perf_event_attr using libpfm.
type pfmPerfEncodeArgT struct {
attr unsafe.Pointer
fstr unsafe.Pointer
size C.size_t
_ C.int // idx
_ C.int // cpu
_ C.int // flags
}
type readerCloser interface {
io.Reader
io.Closer
}
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