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minio/pkg/cpu/counter_linux.go

38 lines
1017 B

/*
* MinIO Cloud Storage, (C) 2019 MinIO, Inc.
*
* 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.
*/
package cpu
import (
"syscall"
"time"
"unsafe"
"golang.org/x/sys/unix"
)
func newCounter() (counter, error) {
return counter{}, nil
}
func (c counter) now() time.Time {
var ts syscall.Timespec
// Retrieve Per-process CPU-time clock
syscall.Syscall(syscall.SYS_CLOCK_GETTIME, unix.CLOCK_PROCESS_CPUTIME_ID, uintptr(unsafe.Pointer(&ts)), 0)
sec, nsec := ts.Unix()
return time.Unix(sec, nsec)
}