1 // Copyright 2013 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 #define WIN32_LEAN_AND_MEAN
6 #include <windows.h>
7 #include <process.h>
8 #include "_cgo_export.h"
9
10 __stdcall
11 static unsigned int
12 addThread(void *p)
13 {
14 int i, max;
15
16 max = *(int*)p;
17 for(i=0; i<max; i++)
18 Add(i);
19 return 0;
20 }
21
22 void
23 doAdd(int max, int nthread)
24 {
25 enum { MaxThread = 20 };
26 int i;
27 uintptr_t thread_id[MaxThread];
28
29 if(nthread > MaxThread)
30 nthread = MaxThread;
31 for(i=0; i<nthread; i++)
32 thread_id[i] = _beginthreadex(0, 0, addThread, &max, 0, 0);
33 for(i=0; i<nthread; i++) {
34 WaitForSingleObject((HANDLE)thread_id[i], INFINITE);
35 CloseHandle((HANDLE)thread_id[i]);
36 }
37 }
38
39 __stdcall
40 static unsigned int
41 goDummyCallbackThread(void* p)
42 {
43 int i, max;
44
45 max = *(int*)p;
46 for(i=0; i<max; i++)
47 goDummy();
48 return 0;
49 }
50
51 int
52 callGoInCThread(int max)
53 {
54 uintptr_t thread_id;
55 thread_id = _beginthreadex(0, 0, goDummyCallbackThread, &max, 0, 0);
56 WaitForSingleObject((HANDLE)thread_id, INFINITE);
57 CloseHandle((HANDLE)thread_id);
58 return max;
59 }
60
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