4 * Copyright 1996 Alexandre Julliard
7 #ifndef __WINE_THREAD_H
8 #define __WINE_THREAD_H
15 #include "selectors.h" /* for SET_FS */
18 #define HAVE_CLONE_SYSCALL
21 /* This is what we will use on *BSD, once threads using rfork() get
24 * #if defined(__NetBSD__) || defined(__FreeBSD__) || defined(__OpenBSD__)
29 #if (defined(HAVE_CLONE_SYSCALL) || defined(HAVE_RFORK)) && !defined(NO_REENTRANT_LIBC)
35 /* Thread exception block */
38 void *except; /* 00 Head of exception handling chain */
39 void *stack_top; /* 04 Top of thread stack */
40 void *stack_low; /* 08 Stack low-water mark */
41 HTASK16 htask16; /* 0c Win16 task handle */
42 WORD stack_sel; /* 0e 16-bit stack selector */
43 DWORD selman_list; /* 10 Selector manager list */
44 DWORD user_ptr; /* 14 User pointer */
45 struct _TEB *self; /* 18 Pointer to this structure */
46 WORD flags; /* 1c Flags */
47 WORD mutex_count; /* 1e Win16 mutex count */
48 DWORD debug_context; /* 20 Debug context */
49 DWORD *ppriority; /* 24 Pointer to current priority */
50 HQUEUE16 queue; /* 28 Message queue */
52 LPVOID *tls_ptr; /* 2c Pointer to TLS array */
53 struct _PDB32 *process; /* 30 owning process (used by NT3.51 applets)*/
56 /* Thread exception flags */
57 #define TEBF_WIN32 0x0001
58 #define TEBF_TRAP 0x0002
60 /* Event waiting structure */
63 DWORD count; /* Count of valid objects */
64 DWORD signaled; /* Index of signaled object (or WAIT_FAILED)*/
65 BOOL32 wait_all; /* Wait for all objects flag */
66 BOOL32 wait_msg; /* Wait for message flag */
67 K32OBJ *objs[MAXIMUM_WAIT_OBJECTS]; /* Object pointers */
68 int server[MAXIMUM_WAIT_OBJECTS]; /* Server handles */
74 K32OBJ header; /* 00 Kernel object header */
75 struct _PDB32 *process; /* 08 Process owning this thread */
76 K32OBJ *event; /* 0c Thread event */
77 TEB teb; /* 10 Thread exception block */
78 DWORD flags; /* 44 Flags */
79 DWORD exit_code; /* 48 Termination status */
80 WORD teb_sel; /* 4c Selector to TEB */
81 WORD emu_sel; /* 4e 80387 emulator selector */
82 int thread_errno; /* 50 Per-thread errno (was: unknown) */
83 WAIT_STRUCT *wait_list; /* 54 Event waiting list */
84 int thread_h_errno; /* 50 Per-thread h_errno (was: unknown) */
85 void *ring0_thread; /* 5c Pointer to ring 0 thread */
86 void *ptdbx; /* 60 Pointer to TDBX structure */
87 void *stack_base; /* 64 Base of the stack */
88 void *exit_stack; /* 68 Stack pointer on thread exit */
89 void *emu_data; /* 6c Related to 80387 emulation */
90 DWORD last_error; /* 70 Last error code */
91 void *debugger_CB; /* 74 Debugger context block */
92 DWORD debug_thread; /* 78 Thread debugging this one (?) */
93 void *pcontext; /* 7c Thread register context */
94 DWORD cur_stack; /* 80 Current stack (was: unknown) */
95 DWORD unknown3[2]; /* 84 Unknown */
96 WORD current_ss; /* 8c Another 16-bit stack selector */
98 void *ss_table; /* 90 Pointer to info about 16-bit stack */
99 WORD thunk_ss; /* 94 Yet another 16-bit stack selector */
101 LPVOID tls_array[64]; /* 98 Thread local storage */
102 DWORD delta_priority; /* 198 Priority delta */
103 DWORD unknown4[7]; /* 19c Unknown */
104 void *create_data; /* 1b8 Pointer to creation structure */
105 DWORD suspend_count; /* 1bc SuspendThread() counter */
106 void *entry_point; /* 1c0 Thread entry point (was: unknown) */
107 void *entry_arg; /* 1c4 Entry point arg (was: unknown) */
108 int unix_pid; /* 1c8 Unix thread pid (was: unknown) */
109 K32OBJ *mutex_list; /* 1cc List of owned mutex (was: unknown)*/
110 DWORD unknown5[2]; /* 1d0 Unknown */
111 DWORD sys_count[4]; /* 1d8 Syslevel mutex entry counters */
112 CRITICAL_SECTION *sys_mutex[4];/* 1e8 Syslevel mutex pointers */
113 DWORD unknown6[2]; /* 1f8 Unknown */
114 /* The following are Wine-specific fields */
115 CONTEXT context; /* 200 Thread context */
116 WAIT_STRUCT wait_struct; /* Event wait structure */
117 int socket; /* Socket for server communication */
118 unsigned int seq; /* Server sequence number */
119 void *server_tid; /* Server id for this thread */
122 /* Thread queue entry */
123 typedef struct _THREAD_ENTRY
126 struct _THREAD_ENTRY *next;
129 /* A thread queue is a circular list; a THREAD_QUEUE is a pointer */
130 /* to the end of the queue (i.e. where we add elements) */
131 typedef THREAD_ENTRY *THREAD_QUEUE;
133 /* THDB <-> Thread id conversion macros */
134 #define THREAD_OBFUSCATOR ((DWORD)0xdeadbeef)
135 #define THREAD_ID_TO_THDB(id) ((THDB *)((id) ^ THREAD_OBFUSCATOR))
136 #define THDB_TO_THREAD_ID(thdb) ((DWORD)(thdb) ^ THREAD_OBFUSCATOR)
138 /* The pseudo handle value returned by GetCurrentThread */
139 #define CURRENT_THREAD_PSEUDOHANDLE 0xfffffffe
142 /* On the i386, the current thread is in the %fs register */
143 # define SET_CUR_THREAD(thdb) SET_FS((thdb)->teb_sel)
145 extern THDB *pCurrentThread;
146 # define SET_CUR_THREAD(thdb) (pCurrentThread = (thdb))
147 #endif /* __i386__ */
150 /* scheduler/thread.c */
151 extern THDB *THREAD_Create( struct _PDB32 *pdb, DWORD stack_size,
152 BOOL32 alloc_stack16,
153 int *server_thandle, int *server_phandle,
154 LPTHREAD_START_ROUTINE start_addr, LPVOID param );
155 extern THDB *THREAD_Current(void);
156 extern BOOL32 THREAD_IsWin16( THDB *thdb );
157 extern THDB *THREAD_IdToTHDB( DWORD id );
158 extern void THREAD_Start( THDB *thdb );
159 extern THDB *THREAD_GetPtr( HANDLE32 handle, DWORD access, int *server_handle );
160 extern void THREAD_AddQueue( THREAD_QUEUE *queue, THDB *thread );
161 extern void THREAD_RemoveQueue( THREAD_QUEUE *queue, THDB *thread );
162 extern DWORD THREAD_TlsAlloc( THDB *thread );
164 /* scheduler/event.c */
165 extern void EVENT_Set( K32OBJ *obj );
166 extern K32OBJ *EVENT_Create( BOOL32 manual_reset, BOOL32 initial_state );
168 /* scheduler/mutex.c */
169 extern void MUTEX_Abandon( K32OBJ *obj );
171 /* scheduler/synchro.c */
172 extern void SYNC_WaitForCondition( WAIT_STRUCT *wait, DWORD timeout );
173 extern void SYNC_WakeUp( THREAD_QUEUE *queue, DWORD max );
174 extern void SYNC_MsgWakeUp( THDB *thdb );
175 extern void SYNC_SetupSignals(void);
176 extern DWORD SYNC_DoWait( DWORD count, const HANDLE32 *handles,
177 BOOL32 wait_all, DWORD timeout,
178 BOOL32 alertable, BOOL32 wait_msg );
181 /* scheduler/sysdeps.c */
182 extern int SYSDEPS_SpawnThread( THDB *thread );
183 extern void SYSDEPS_ExitThread(void);
184 extern TEB * WINAPI NtCurrentTeb(void);
186 #endif /* __WINE_THREAD_H */