code.gitea.io/gitea@v1.19.3/modules/pprof/pprof.go (about)

     1  // Copyright 2018 The Gitea Authors. All rights reserved.
     2  // SPDX-License-Identifier: MIT
     3  
     4  package pprof
     5  
     6  import (
     7  	"fmt"
     8  	"os"
     9  	"runtime"
    10  	"runtime/pprof"
    11  
    12  	"code.gitea.io/gitea/modules/log"
    13  )
    14  
    15  // DumpMemProfileForUsername dumps a memory profile at pprofDataPath as memprofile_<username>_<temporary id>
    16  func DumpMemProfileForUsername(pprofDataPath, username string) error {
    17  	f, err := os.CreateTemp(pprofDataPath, fmt.Sprintf("memprofile_%s_", username))
    18  	if err != nil {
    19  		return err
    20  	}
    21  	defer f.Close()
    22  	runtime.GC() // get up-to-date statistics
    23  	return pprof.WriteHeapProfile(f)
    24  }
    25  
    26  // DumpCPUProfileForUsername dumps a CPU profile at pprofDataPath as cpuprofile_<username>_<temporary id>
    27  // the stop function it returns stops, writes and closes the CPU profile file
    28  func DumpCPUProfileForUsername(pprofDataPath, username string) (func(), error) {
    29  	f, err := os.CreateTemp(pprofDataPath, fmt.Sprintf("cpuprofile_%s_", username))
    30  	if err != nil {
    31  		return nil, err
    32  	}
    33  
    34  	err = pprof.StartCPUProfile(f)
    35  	if err != nil {
    36  		log.Fatal("StartCPUProfile: %v", err)
    37  	}
    38  	return func() {
    39  		pprof.StopCPUProfile()
    40  		err = f.Close()
    41  		if err != nil {
    42  			log.Fatal("StopCPUProfile Close: %v", err)
    43  		}
    44  	}, nil
    45  }