wehub-resource-sync
80 lines
2.1 KiB
Go
80 lines
2.1 KiB
Go
// Copyright 2024 Dolthub, 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 utils
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import (
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"sync"
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"github.com/pkg/profile"
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)
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// prof is the global profiler that is in use. This should only be interacted with via StartProfiling and StopProfiling.
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var prof interface{ Stop() }
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// profMutex is the mutex that handles concurrent manipulations of prof.
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var profMutex = &sync.Mutex{}
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// ProfilingOptions contains all options for starting the profiler.
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type ProfilingOptions struct {
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CPU bool
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Memory bool
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Block bool
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Trace bool
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Path string
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}
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// StartProfiling starts profiling the CPU.
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func StartProfiling(options ProfilingOptions) {
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profMutex.Lock()
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defer profMutex.Unlock()
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if !options.HasOptions() {
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return
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}
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profOpts := []func(p *profile.Profile){profile.NoShutdownHook}
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if options.CPU {
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profOpts = append(profOpts, profile.CPUProfile)
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}
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if options.Memory {
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profOpts = append(profOpts, profile.MemProfile)
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}
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if options.Block {
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profOpts = append(profOpts, profile.BlockProfile)
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}
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if options.Trace {
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profOpts = append(profOpts, profile.TraceProfile)
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}
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if len(options.Path) > 0 {
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profOpts = append(profOpts, profile.ProfilePath(options.Path))
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}
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prof = profile.Start(profOpts...)
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}
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// StopProfiling stops profiling the CPU.
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func StopProfiling() {
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profMutex.Lock()
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defer profMutex.Unlock()
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if prof != nil {
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prof.Stop()
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prof = nil
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}
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}
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// HasOptions returns true when at least one profiler target has been selected.
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func (options ProfilingOptions) HasOptions() bool {
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return options.CPU || options.Memory || options.Block || options.Trace
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}
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