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 HANDLE thread;
29 MSVCRT__beginthread_start_routine_t start_address;
30 void *arglist;
31 } _beginthread_trampoline_t;
32
33 /*********************************************************************
34 * msvcrt_get_thread_data
35 *
36 * Return the thread local storage structure.
37 */
38 thread_data_t *msvcrt_get_thread_data(void)
39 {
40 thread_data_t *ptr;
41 DWORD err = GetLastError(); /* need to preserve last error */
42
43 if (!(ptr = TlsGetValue( msvcrt_tls_index )))
44 {
45 if (!(ptr = HeapAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*ptr) )))
46 _amsg_exit( _RT_THREAD );
47 if (!TlsSetValue( msvcrt_tls_index, ptr )) _amsg_exit( _RT_THREAD );
48 ptr->tid = GetCurrentThreadId();
49 ptr->handle = INVALID_HANDLE_VALUE;
50 ptr->random_seed = 1;
51 ptr->locinfo = MSVCRT_locale->locinfo;
52 ptr->mbcinfo = MSVCRT_locale->mbcinfo;
53 }
54 SetLastError( err );
55 return ptr;
56 }
57
58
59 /*********************************************************************
60 * _beginthread_trampoline
61 */
62 static DWORD CALLBACK _beginthread_trampoline(LPVOID arg)
63 {
64 _beginthread_trampoline_t local_trampoline;
65 thread_data_t *data = msvcrt_get_thread_data();
66
67 memcpy(&local_trampoline,arg,sizeof(local_trampoline));
68 data->handle = local_trampoline.thread;
69 MSVCRT_free(arg);
70
71 local_trampoline.start_address(local_trampoline.arglist);
72 return 0;
73 }
74
75 /*********************************************************************
76 * _beginthread (MSVCRT.@)
77 */
78 MSVCRT_uintptr_t CDECL _beginthread(
79 MSVCRT__beginthread_start_routine_t start_address, /* [in] Start address of routine that begins execution of new thread */
80 unsigned int stack_size, /* [in] Stack size for new thread or 0 */
81 void *arglist) /* [in] Argument list to be passed to new thread or NULL */
82 {
83 _beginthread_trampoline_t* trampoline;
84 HANDLE thread;
85
86 TRACE("(%p, %d, %p)\n", start_address, stack_size, arglist);
87
88 trampoline = MSVCRT_malloc(sizeof(*trampoline));
89 if(!trampoline) {
90 *MSVCRT__errno() = MSVCRT_EAGAIN;
91 return -1;
92 }
93
94 thread = CreateThread(NULL, stack_size, _beginthread_trampoline,
95 trampoline, CREATE_SUSPENDED, NULL);
96 if(!thread) {
97 MSVCRT_free(trampoline);
98 *MSVCRT__errno() = MSVCRT_EAGAIN;
99 return -1;
100 }
101
102 trampoline->thread = thread;
103 trampoline->start_address = start_address;
104 trampoline->arglist = arglist;
105
106 if(ResumeThread(thread) == -1) {
107 MSVCRT_free(trampoline);
108 *MSVCRT__errno() = MSVCRT_EAGAIN;
109 return -1;
110 }
111
112 return (MSVCRT_uintptr_t)thread;
113 }
114
115 /*********************************************************************
116 * _beginthreadex (MSVCRT.@)
117 */
118 MSVCRT_uintptr_t CDECL _beginthreadex(
119 void *security, /* [in] Security descriptor for new thread; must be NULL for Windows 9x applications */
120 unsigned int stack_size, /* [in] Stack size for new thread or 0 */
121 MSVCRT__beginthreadex_start_routine_t start_address, /* [in] Start address of routine that begins execution of new thread */
122 void *arglist, /* [in] Argument list to be passed to new thread or NULL */
123 unsigned int initflag, /* [in] Initial state of new thread (0 for running or CREATE_SUSPEND for suspended) */
124 unsigned int *thrdaddr) /* [out] Points to a 32-bit variable that receives the thread identifier */
125 {
126 TRACE("(%p, %d, %p, %p, %d, %p)\n", security, stack_size, start_address, arglist, initflag, thrdaddr);
127
128 /* FIXME */
129 return (MSVCRT_uintptr_t)CreateThread(security, stack_size,
130 start_address, arglist,
131 initflag, thrdaddr);
132 }
133
134 /*********************************************************************
135 * _endthread (MSVCRT.@)
136 */
137 void CDECL _endthread(void)
138 {
139 TRACE("(void)\n");
140
141 /* FIXME */
142 ExitThread(0);
143 }
144
145 /*********************************************************************
146 * _endthreadex (MSVCRT.@)
147 */
148 void CDECL _endthreadex(
149 unsigned int retval) /* [in] Thread exit code */
150 {
151 TRACE("(%d)\n", retval);
152
153 /* FIXME */
154 ExitThread(retval);
155 }
156
157 /*********************************************************************
158 * _getptd - not exported in native msvcrt
159 */
160 thread_data_t* CDECL _getptd(void)
161 {
162 FIXME("returns undocumented/not fully filled data\n");
163 return msvcrt_get_thread_data();
164 }
165
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