github.com/bir3/gocompiler@v0.9.2202/src/cmd/cgo/internal/test/callback_c.c (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  #include <string.h>
     6  
     7  #include "_cgo_export.h"
     8  
     9  void
    10  callback(void *f)
    11  {
    12  	// use some stack space
    13  	volatile char data[64*1024];
    14  
    15  	data[0] = 0;
    16  	goCallback(f);
    17          data[sizeof(data)-1] = 0;
    18  }
    19  
    20  void
    21  callGoFoo(void)
    22  {
    23  	extern void goFoo(void);
    24  	goFoo();
    25  }
    26  
    27  void
    28  IntoC(void)
    29  {
    30  	BackIntoGo();
    31  }
    32  
    33  void
    34  Issue1560InC(void)
    35  {
    36  	Issue1560FromC();
    37  }
    38  
    39  void
    40  callGoStackCheck(void)
    41  {
    42  	extern void goStackCheck(void);
    43  	goStackCheck();
    44  }
    45  
    46  int
    47  returnAfterGrow(void)
    48  {
    49  	extern int goReturnVal(void);
    50  	goReturnVal();
    51  	return 123456;
    52  }
    53  
    54  int
    55  returnAfterGrowFromGo(void)
    56  {
    57  	extern int goReturnVal(void);
    58  	return goReturnVal();
    59  }
    60  
    61  void
    62  callGoWithString(void)
    63  {
    64  	extern void goWithString(GoString);
    65  	const char *str = "string passed from C to Go";
    66  	goWithString((GoString){str, strlen(str)});
    67  }