c9e9ae555f
* Add license headers & NOTICE * generated protobuf --------- Co-authored-by: github-actions <41898282+github-actions[bot]@users.noreply.github.com>
84 lines
1.9 KiB
Go
84 lines
1.9 KiB
Go
// Copyright 2023 LiveKit, 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 pprof
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import (
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"bytes"
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"context"
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"runtime/pprof"
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"time"
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"github.com/livekit/psrpc"
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)
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const (
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cpuProfileName = "cpu"
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defaultTimeout = 30
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)
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var (
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ErrProfileNotFound = psrpc.NewErrorf(psrpc.NotFound, "profile not found")
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)
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func GetProfileData(ctx context.Context, profileName string, timeout int, debug int) (b []byte, err error) {
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switch profileName {
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case cpuProfileName:
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return GetCpuProfileData(ctx, timeout)
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default:
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return GetGenericProfileData(profileName, debug)
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}
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}
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func GetCpuProfileData(ctx context.Context, timeout int) (b []byte, err error) {
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if timeout == 0 {
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timeout = defaultTimeout
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}
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buf := &bytes.Buffer{}
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err = pprof.StartCPUProfile(buf)
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if err != nil {
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return nil, err
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}
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select {
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case <-ctx.Done():
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// finish async in order not to block, since we will not use the results
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go pprof.StopCPUProfile()
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return nil, context.Canceled
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case <-time.After(time.Duration(timeout) * time.Second):
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// break
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}
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pprof.StopCPUProfile()
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return buf.Bytes(), nil
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}
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func GetGenericProfileData(profileName string, debug int) (b []byte, err error) {
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pp := pprof.Lookup(profileName)
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if pp == nil {
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return nil, ErrProfileNotFound
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}
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buf := &bytes.Buffer{}
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err = pp.WriteTo(buf, debug)
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if err != nil {
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return nil, err
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}
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return buf.Bytes(), nil
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}
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