"fmt"
	"io"
	"net/http"
	"net/url"
	"os"
	"os/exec"
	"path/filepath"
	"runtime"
	"strconv"
	"strings"
	"sync"
	"time"

	"github.com/google/pprof/internal/measurement"
	"github.com/google/pprof/internal/plugin"
	"github.com/google/pprof/profile"
)

// fetchProfiles fetches and symbolizes the profiles specified by s.
// It will merge all the profiles it is able to retrieve, even if

	runtime.SetCgoTraceback(0, unsafe.Pointer(C.gprofCgoTraceback), unsafe.Pointer(C.gprofCgoContext), nil)

	go C.CallGoSleep()
	go C.CallGoSleep()
	go C.CallGoSleep()
	time.Sleep(1 * time.Second)

	prof := pprof.Lookup("goroutine")
	prof.WriteTo(io.Discard, 1)
	fmt.Println("OK")
}

//export GoSleep
func GoSleep() {
	time.Sleep(time.Hour)

//
//	go tool pprof cpu.prof
//
// There are many commands available from the pprof command line.
// Commonly used commands include "top", which prints a summary of the
// top program hot-spots, and "web", which opens an interactive graph
// of hot-spots and their call graphs. Use "help" for information on
// all pprof commands.
//
// For more information about pprof, see

	f, err := os.CreateTemp("", "prof")
	if err != nil {
		fmt.Fprintln(os.Stderr, err)
		os.Exit(2)
	}

	if err := pprof.StartCPUProfile(f); err != nil {
		fmt.Fprintln(os.Stderr, err)
		os.Exit(2)
	}

	t0 := time.Now()
	for time.Since(t0) < time.Second {
		C.cpuHog()
	}

	pprof.StopCPUProfile()

	name := f.Name()
	if err := f.Close(); err != nil {

// Serving of pprof-like profiles.

package traceviewer

import (
	"bufio"
	"fmt"
	"internal/profile"
	"internal/trace"
	"net/http"
	"os"
	"os/exec"
	"path/filepath"
	"runtime"
	"time"
)

type ProfileFunc func(r *http.Request) ([]ProfileRecord, error)

// SVGProfileHandlerFunc serves pprof-like profile generated by prof as svg.

// computePprofIO returns a computePprofFunc that generates IO pprof-like profile (time spent in
// IO wait, currently only network blocking event).
func computePprofIO() computePprofFunc {
	return makeComputePprofFunc(trace.GoWaiting, func(reason string) bool {
		return reason == "network"
	})
}

// computePprofBlock returns a computePprofFunc that generates blocking pprof-like profile
// (time spent blocked on synchronization primitives).

			if i%1000 == 0 {
				if time.Since(start) > time.Second {
					break
				}
			}
			C.CallGoNop()
		}
		c <- true
	}()

	var buf bytes.Buffer
	pprof.StartCPUProfile(&buf)
	c <- true
	<-c
	pprof.StopCPUProfile()

	fmt.Println("OK")

//
// # Usage examples
//
// Use the pprof tool to look at the heap profile:
//
//	go tool pprof http://localhost:6060/debug/pprof/heap
//
// Or to look at a 30-second CPU profile:
//
//	go tool pprof http://localhost:6060/debug/pprof/profile?seconds=30
//
// Or to look at the goroutine blocking profile, after calling
// [runtime.SetBlockProfileRate] in your program:
//
//	go tool pprof http://localhost:6060/debug/pprof/block
//

// Package pgo contains the compiler-agnostic portions of PGO profile handling.
// Notably, parsing pprof profiles and serializing/deserializing from a custom
// intermediate representation.
package pgo

import (
	"errors"
	"fmt"
	"internal/profile"
	"io"
	"sort"
)

// FromPProf parses Profile from a pprof profile.
func FromPProf(r io.Reader) (*Profile, error) {
	p, err := profile.Parse(r)

	"cmd/internal/telemetry"

	"github.com/google/pprof/driver"
	"github.com/google/pprof/profile"
)

func main() {
	telemetry.Start()
	telemetry.Inc("pprof/invocations")
	options := &driver.Options{
		Fetch: new(fetcher),
		Obj:   new(objTool),
		UI:    newUI(),
	}
	err := driver.PProf(options)
	telemetry.CountFlags("pprof/flag:", *flag.CommandLine) // pprof will use the flag package as its default
	if err != nil {