1 /**
2 * \file
3 * Runtime support for managed Mutex on Win32
4 *
5 * Author:
6 * Ludovic Henry (luhenry@microsoft.com)
7 *
8 * Licensed under the MIT license. See LICENSE file in the project root for full license information.
9 */
10
11 #include "w32mutex.h"
12
13 #include <windows.h>
14 #include <winbase.h>
15 #include <mono/metadata/handle.h>
16 #include <mono/utils/mono-error-internals.h>
17
18
19 void
mono_w32mutex_init(void)20 mono_w32mutex_init (void)
21 {
22 }
23
24 gpointer
ves_icall_System_Threading_Mutex_CreateMutex_internal(MonoBoolean owned,MonoStringHandle name,MonoBoolean * created,MonoError * error)25 ves_icall_System_Threading_Mutex_CreateMutex_internal (MonoBoolean owned, MonoStringHandle name, MonoBoolean *created, MonoError *error)
26 {
27 HANDLE mutex;
28
29 error_init (error);
30
31 *created = TRUE;
32
33 if (MONO_HANDLE_IS_NULL (name)) {
34 MONO_ENTER_GC_SAFE;
35 mutex = CreateMutex (NULL, owned, NULL);
36 MONO_EXIT_GC_SAFE;
37 } else {
38 uint32_t gchandle;
39 gunichar2 *uniname = mono_string_handle_pin_chars (name, &gchandle);
40 MONO_ENTER_GC_SAFE;
41 mutex = CreateMutex (NULL, owned, uniname);
42
43 if (GetLastError () == ERROR_ALREADY_EXISTS)
44 *created = FALSE;
45 MONO_EXIT_GC_SAFE;
46 mono_gchandle_free (gchandle);
47 }
48
49 return mutex;
50 }
51
52 MonoBoolean
ves_icall_System_Threading_Mutex_ReleaseMutex_internal(gpointer handle)53 ves_icall_System_Threading_Mutex_ReleaseMutex_internal (gpointer handle)
54 {
55 return ReleaseMutex (handle);
56 }
57
58 gpointer
ves_icall_System_Threading_Mutex_OpenMutex_internal(MonoStringHandle name,gint32 rights,gint32 * err,MonoError * error)59 ves_icall_System_Threading_Mutex_OpenMutex_internal (MonoStringHandle name, gint32 rights, gint32 *err, MonoError *error)
60 {
61 HANDLE ret;
62
63 error_init (error);
64 *err = ERROR_SUCCESS;
65
66 uint32_t gchandle = 0;
67 gunichar2 *uniname = NULL;
68 if (!MONO_HANDLE_IS_NULL (name))
69 uniname = mono_string_handle_pin_chars (name, &gchandle);
70 MONO_ENTER_GC_SAFE;
71 ret = OpenMutex (rights, FALSE, uniname);
72 if (!ret)
73 *err = GetLastError ();
74 MONO_EXIT_GC_SAFE;
75 if (gchandle != 0)
76 mono_gchandle_free (gchandle);
77
78 return ret;
79 }
80