github.com/twelsh-aw/go/src@v0.0.0-20230516233729-a56fe86a7c81/runtime/testdata/testprogcgo/issue29707.go (about)

     1  // Copyright 2011 The Go Authors. All rights reserved.
     2  // Use of this source code is governed by a BSD-style
     3  // license that can be found in the LICENSE file.
     4  
     5  //go:build !plan9 && !windows
     6  // +build !plan9,!windows
     7  
     8  // This is for issue #29707
     9  
    10  package main
    11  
    12  /*
    13  #include <pthread.h>
    14  
    15  extern void* callbackTraceParser(void*);
    16  typedef void* (*cbTraceParser)(void*);
    17  
    18  static void testCallbackTraceParser(cbTraceParser cb) {
    19  	pthread_t thread_id;
    20  	pthread_create(&thread_id, NULL, cb, NULL);
    21  	pthread_join(thread_id, NULL);
    22  }
    23  */
    24  import "C"
    25  
    26  import (
    27  	"bytes"
    28  	"fmt"
    29  	traceparser "internal/trace"
    30  	"runtime/trace"
    31  	"time"
    32  	"unsafe"
    33  )
    34  
    35  func init() {
    36  	register("CgoTraceParser", CgoTraceParser)
    37  }
    38  
    39  //export callbackTraceParser
    40  func callbackTraceParser(unsafe.Pointer) unsafe.Pointer {
    41  	time.Sleep(time.Millisecond)
    42  	return nil
    43  }
    44  
    45  func CgoTraceParser() {
    46  	buf := new(bytes.Buffer)
    47  
    48  	trace.Start(buf)
    49  	C.testCallbackTraceParser(C.cbTraceParser(C.callbackTraceParser))
    50  	trace.Stop()
    51  
    52  	_, err := traceparser.Parse(buf, "")
    53  	if err == traceparser.ErrTimeOrder {
    54  		fmt.Println("ErrTimeOrder")
    55  	} else if err != nil {
    56  		fmt.Println("Parse error: ", err)
    57  	} else {
    58  		fmt.Println("OK")
    59  	}
    60  }