1 /*
2 * msvcrt.dll thread functions
3 *
4 * Copyright 2000 Jon Griffiths
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
10 *
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
19 */
20 #include "msvcrt.h"
21 #include "wine/debug.h"
22
23 WINE_DEFAULT_DEBUG_CHANNEL(msvcrt);
24
25 /********************************************************************/
26
27 typedef struct {
28 MSVCRT__beginthread_start_routine_t start_address;
29 void *arglist;
30 } _beginthread_trampoline_t;
31
32 /*********************************************************************
33 * msvcrt_get_thread_data
34 *
35 * Return the thread local storage structure.
36 */
37 thread_data_t *msvcrt_get_thread_data(void)
38 {
39 thread_data_t *ptr;
40 DWORD err = GetLastError(); /* need to preserve last error */
41
42 if (!(ptr = TlsGetValue( msvcrt_tls_index )))
43 {
44 if (!(ptr = HeapAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*ptr) )))
45 _amsg_exit( _RT_THREAD );
46 if (!TlsSetValue( msvcrt_tls_index, ptr )) _amsg_exit( _RT_THREAD );
47 ptr->random_seed = 1;
48 }
49 SetLastError( err );
50 return ptr;
51 }
52
53
54 /*********************************************************************
55 * _beginthread_trampoline
56 */
57 static DWORD CALLBACK _beginthread_trampoline(LPVOID arg)
58 {
59 _beginthread_trampoline_t local_trampoline;
60
61 /* Maybe it's just being paranoid, but freeing arg right
62 * away seems safer.
63 */
64 memcpy(&local_trampoline,arg,sizeof(local_trampoline));
65 MSVCRT_free(arg);
66
67 local_trampoline.start_address(local_trampoline.arglist);
68 return 0;
69 }
70
71 /*********************************************************************
72 * _beginthread (MSVCRT.@)
73 */
74 MSVCRT_uintptr_t CDECL _beginthread(
75 MSVCRT__beginthread_start_routine_t start_address, /* [in] Start address of routine that begins execution of new thread */
76 unsigned int stack_size, /* [in] Stack size for new thread or 0 */
77 void *arglist) /* [in] Argument list to be passed to new thread or NULL */
78 {
79 _beginthread_trampoline_t* trampoline;
80
81 TRACE("(%p, %d, %p)\n", start_address, stack_size, arglist);
82
83 /* Allocate the trampoline here so that it is still valid when the thread
84 * starts... typically after this function has returned.
85 * _beginthread_trampoline is responsible for freeing the trampoline
86 */
87 trampoline=MSVCRT_malloc(sizeof(*trampoline));
88 trampoline->start_address = start_address;
89 trampoline->arglist = arglist;
90
91 /* FIXME */
92 return (MSVCRT_uintptr_t)CreateThread(NULL, stack_size, _beginthread_trampoline,
93 trampoline, 0, NULL);
94 }
95
96 /*********************************************************************
97 * _beginthreadex (MSVCRT.@)
98 */
99 MSVCRT_uintptr_t CDECL _beginthreadex(
100 void *security, /* [in] Security descriptor for new thread; must be NULL for Windows 9x applications */
101 unsigned int stack_size, /* [in] Stack size for new thread or 0 */
102 MSVCRT__beginthreadex_start_routine_t start_address, /* [in] Start address of routine that begins execution of new thread */
103 void *arglist, /* [in] Argument list to be passed to new thread or NULL */
104 unsigned int initflag, /* [in] Initial state of new thread (0 for running or CREATE_SUSPEND for suspended) */
105 unsigned int *thrdaddr) /* [out] Points to a 32-bit variable that receives the thread identifier */
106 {
107 TRACE("(%p, %d, %p, %p, %d, %p)\n", security, stack_size, start_address, arglist, initflag, thrdaddr);
108
109 /* FIXME */
110 return (MSVCRT_uintptr_t)CreateThread(security, stack_size,
111 start_address, arglist,
112 initflag, thrdaddr);
113 }
114
115 /*********************************************************************
116 * _endthread (MSVCRT.@)
117 */
118 void CDECL _endthread(void)
119 {
120 TRACE("(void)\n");
121
122 /* FIXME */
123 ExitThread(0);
124 }
125
126 /*********************************************************************
127 * _endthreadex (MSVCRT.@)
128 */
129 void CDECL _endthreadex(
130 unsigned int retval) /* [in] Thread exit code */
131 {
132 TRACE("(%d)\n", retval);
133
134 /* FIXME */
135 ExitThread(retval);
136 }
137
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