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 BOOL32 wait_all; /* Wait for all objects flag */
65 K32OBJ *objs[MAXIMUM_WAIT_OBJECTS]; /* Object pointers */
66 int server[MAXIMUM_WAIT_OBJECTS]; /* Server handles */
72 K32OBJ header; /* 00 Kernel object header */
73 struct _PDB32 *process; /* 08 Process owning this thread */
74 HANDLE32 event; /* 0c Thread event */
75 TEB teb; /* 10 Thread exception block */
76 DWORD flags; /* 44 Flags */
77 DWORD exit_code; /* 48 Termination status */
78 WORD teb_sel; /* 4c Selector to TEB */
79 WORD emu_sel; /* 4e 80387 emulator selector */
80 int thread_errno; /* 50 Per-thread errno (was: unknown) */
81 WAIT_STRUCT *wait_list; /* 54 Event waiting list */
82 int thread_h_errno; /* 50 Per-thread h_errno (was: unknown) */
83 void *ring0_thread; /* 5c Pointer to ring 0 thread */
84 void *ptdbx; /* 60 Pointer to TDBX structure */
85 void *stack_base; /* 64 Base of the stack */
86 void *exit_stack; /* 68 Stack pointer on thread exit */
87 void *emu_data; /* 6c Related to 80387 emulation */
88 DWORD last_error; /* 70 Last error code */
89 void *debugger_CB; /* 74 Debugger context block */
90 DWORD debug_thread; /* 78 Thread debugging this one (?) */
91 void *pcontext; /* 7c Thread register context */
92 DWORD cur_stack; /* 80 Current stack (was: unknown) */
93 DWORD unknown3[2]; /* 84 Unknown */
94 WORD current_ss; /* 8c Another 16-bit stack selector */
96 void *ss_table; /* 90 Pointer to info about 16-bit stack */
97 WORD thunk_ss; /* 94 Yet another 16-bit stack selector */
99 LPVOID tls_array[64]; /* 98 Thread local storage */
100 DWORD delta_priority; /* 198 Priority delta */
101 DWORD unknown4[7]; /* 19c Unknown */
102 void *create_data; /* 1b8 Pointer to creation structure */
103 DWORD suspend_count; /* 1bc SuspendThread() counter */
104 void *entry_point; /* 1c0 Thread entry point (was: unknown) */
105 void *entry_arg; /* 1c4 Entry point arg (was: unknown) */
106 int unix_pid; /* 1c8 Unix thread pid (was: unknown) */
107 DWORD unknown5[3]; /* 1cc Unknown */
108 DWORD sys_count[4]; /* 1d8 Syslevel mutex entry counters */
109 CRITICAL_SECTION *sys_mutex[4];/* 1e8 Syslevel mutex pointers */
110 DWORD unknown6[2]; /* 1f8 Unknown */
111 /* The following are Wine-specific fields */
112 WAIT_STRUCT wait_struct; /* 200 Event wait structure */
113 int socket; /* Socket for server communication */
114 unsigned int seq; /* Server sequence number */
115 void *server_tid; /* Server id for this thread */
119 /* Thread queue entry */
120 typedef struct _THREAD_ENTRY
123 struct _THREAD_ENTRY *next;
126 /* A thread queue is a circular list; a THREAD_QUEUE is a pointer */
127 /* to the end of the queue (i.e. where we add elements) */
128 typedef THREAD_ENTRY *THREAD_QUEUE;
130 /* THDB <-> Thread id conversion macros */
131 #define THREAD_OBFUSCATOR ((DWORD)0xdeadbeef)
132 #define THREAD_ID_TO_THDB(id) ((THDB *)((id) ^ THREAD_OBFUSCATOR))
133 #define THDB_TO_THREAD_ID(thdb) ((DWORD)(thdb) ^ THREAD_OBFUSCATOR)
135 /* The pseudo handle value returned by GetCurrentThread */
136 #define CURRENT_THREAD_PSEUDOHANDLE 0xfffffffe
139 /* On the i386, the current thread is in the %fs register */
140 # define SET_CUR_THREAD(thdb) SET_FS((thdb)->teb_sel)
142 extern THDB *pCurrentThread;
143 # define SET_CUR_THREAD(thdb) (pCurrentThread = (thdb))
144 #endif /* __i386__ */
147 /* scheduler/thread.c */
148 extern THDB *THREAD_Create( struct _PDB32 *pdb, DWORD stack_size,
149 BOOL32 alloc_stack16,
150 int *server_thandle, int *server_phandle,
151 LPTHREAD_START_ROUTINE start_addr, LPVOID param );
152 extern THDB *THREAD_Current(void);
153 extern BOOL32 THREAD_IsWin16( THDB *thdb );
154 extern THDB *THREAD_IdToTHDB( DWORD id );
155 extern void THREAD_Start( THDB *thdb );
156 extern void THREAD_AddQueue( THREAD_QUEUE *queue, THDB *thread );
157 extern void THREAD_RemoveQueue( THREAD_QUEUE *queue, THDB *thread );
158 extern DWORD THREAD_TlsAlloc( THDB *thread );
160 /* scheduler/sysdeps.c */
161 extern int SYSDEPS_SpawnThread( THDB *thread );
162 extern void SYSDEPS_ExitThread(void);
163 extern TEB * WINAPI NtCurrentTeb(void);
165 #endif /* __WINE_THREAD_H */