35 lines
1.1 KiB
Go
35 lines
1.1 KiB
Go
// Copyright 2018 Google Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package state
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import (
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"fmt"
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"syscall"
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"time"
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"unsafe"
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"gvisor.googlesource.com/gvisor/pkg/abi/linux"
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)
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// CPUTime returns the CPU time usage by Sentry and app.
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func CPUTime() (time.Duration, error) {
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var ts syscall.Timespec
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_, _, errno := syscall.RawSyscall(syscall.SYS_CLOCK_GETTIME, uintptr(linux.CLOCK_PROCESS_CPUTIME_ID), uintptr(unsafe.Pointer(&ts)), 0)
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if errno != 0 {
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return 0, fmt.Errorf("failed calling clock_gettime(CLOCK_PROCESS_CPUTIME_ID): errno=%d", errno)
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}
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return time.Duration(ts.Nano()), nil
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}
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