/* * Win32 threads * * Copyright 1996 Alexandre Julliard * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ #include "config.h" #include "wine/port.h" #include #include #include #ifdef HAVE_SYS_MMAN_H #include #endif #ifdef HAVE_UNISTD_H # include #endif #include "wine/winbase16.h" #include "thread.h" #include "task.h" #include "module.h" #include "winerror.h" #include "selectors.h" #include "winnt.h" #include "wine/server.h" #include "stackframe.h" #include "wine/debug.h" #include "winnls.h" WINE_DEFAULT_DEBUG_CHANNEL(thread); WINE_DECLARE_DEBUG_CHANNEL(relay); /* TEB of the initial thread */ static TEB initial_teb; extern struct _PDB current_process; /*********************************************************************** * THREAD_IdToTEB * * Convert a thread id to a TEB, making sure it is valid. */ TEB *THREAD_IdToTEB( DWORD id ) { TEB *ret = NULL; if (!id || id == GetCurrentThreadId()) return NtCurrentTeb(); SERVER_START_REQ( get_thread_info ) { req->handle = 0; req->tid_in = id; if (!wine_server_call( req )) ret = reply->teb; } SERVER_END_REQ; if (!ret) { /* Allow task handles to be used; convert to main thread */ if ( IsTask16( id ) ) { TDB *pTask = TASK_GetPtr( id ); if (pTask) return pTask->teb; } SetLastError( ERROR_INVALID_PARAMETER ); } return ret; } /*********************************************************************** * THREAD_InitTEB * * Initialization of a newly created TEB. */ static BOOL THREAD_InitTEB( TEB *teb ) { teb->except = (void *)~0UL; teb->self = teb; teb->tibflags = TEBF_WIN32; teb->tls_ptr = teb->tls_array; teb->exit_code = STILL_ACTIVE; teb->request_fd = -1; teb->reply_fd = -1; teb->wait_fd[0] = -1; teb->wait_fd[1] = -1; teb->stack_top = (void *)~0UL; teb->StaticUnicodeString.MaximumLength = sizeof(teb->StaticUnicodeBuffer); teb->StaticUnicodeString.Buffer = (PWSTR)teb->StaticUnicodeBuffer; teb->teb_sel = SELECTOR_AllocBlock( teb, 0x1000, WINE_LDT_FLAGS_DATA|WINE_LDT_FLAGS_32BIT ); return (teb->teb_sel != 0); } /*********************************************************************** * THREAD_FreeTEB * * Free data structures associated with a thread. * Must be called from the context of another thread. */ static void THREAD_FreeTEB( TEB *teb ) { TRACE("(%p) called\n", teb ); /* Free the associated memory */ FreeSelector16( teb->stack_sel ); FreeSelector16( teb->teb_sel ); VirtualFree( teb->stack_base, 0, MEM_RELEASE ); } /*********************************************************************** * THREAD_InitStack * * Allocate the stack of a thread. */ TEB *THREAD_InitStack( TEB *teb, DWORD stack_size ) { DWORD old_prot, total_size; DWORD page_size = getpagesize(); void *base; /* Allocate the stack */ if (stack_size >= 16*1024*1024) WARN("Thread stack size is %ld MB.\n",stack_size/1024/1024); /* if size is smaller than default, get stack size from parent */ if (stack_size < 1024 * 1024) { if (teb) stack_size = 1024 * 1024; /* no parent */ else stack_size = ((char *)NtCurrentTeb()->stack_top - (char *)NtCurrentTeb()->stack_base - SIGNAL_STACK_SIZE - 3 * page_size); } /* FIXME: some Wine functions use a lot of stack, so we add 64Kb here */ stack_size += 64 * 1024; /* Memory layout in allocated block: * * size contents * 1 page NOACCESS guard page * SIGNAL_STACK_SIZE signal stack * 1 page NOACCESS guard page * 1 page PAGE_GUARD guard page * stack_size normal stack * 64Kb 16-bit stack (optional) * 1 page TEB (except for initial thread) * 1 page debug info (except for initial thread) */ stack_size = (stack_size + (page_size - 1)) & ~(page_size - 1); total_size = stack_size + SIGNAL_STACK_SIZE + 3 * page_size; total_size += 0x10000; /* 16-bit stack */ if (!teb) total_size += 2 * page_size; if (!(base = VirtualAlloc( NULL, total_size, MEM_COMMIT, PAGE_EXECUTE_READWRITE ))) return NULL; if (!teb) { teb = (TEB *)((char *)base + total_size - 2 * page_size); if (!THREAD_InitTEB( teb )) goto error; teb->debug_info = (char *)teb + page_size; } teb->stack_low = base; teb->stack_base = base; teb->signal_stack = (char *)base + page_size; teb->stack_top = (char *)base + 3 * page_size + SIGNAL_STACK_SIZE + stack_size; /* Setup guard pages */ VirtualProtect( base, 1, PAGE_NOACCESS, &old_prot ); VirtualProtect( (char *)teb->signal_stack + SIGNAL_STACK_SIZE, 1, PAGE_NOACCESS, &old_prot ); VirtualProtect( (char *)teb->signal_stack + SIGNAL_STACK_SIZE + page_size, 1, PAGE_EXECUTE_READWRITE | PAGE_GUARD, &old_prot ); /* Allocate the 16-bit stack selector */ teb->stack_sel = SELECTOR_AllocBlock( teb->stack_top, 0x10000, WINE_LDT_FLAGS_DATA ); if (!teb->stack_sel) goto error; teb->cur_stack = MAKESEGPTR( teb->stack_sel, 0x10000 - sizeof(STACK16FRAME) ); return teb; error: FreeSelector16( teb->teb_sel ); VirtualFree( base, 0, MEM_RELEASE ); return NULL; } /*********************************************************************** * thread_errno_location * * Get the per-thread errno location. */ static int *thread_errno_location(void) { return &NtCurrentTeb()->thread_errno; } /*********************************************************************** * thread_h_errno_location * * Get the per-thread h_errno location. */ static int *thread_h_errno_location(void) { return &NtCurrentTeb()->thread_h_errno; } /*********************************************************************** * THREAD_Init * * Setup the initial thread. * * NOTES: The first allocated TEB on NT is at 0x7ffde000. */ void THREAD_Init(void) { if (!initial_teb.self) /* do it only once */ { THREAD_InitTEB( &initial_teb ); assert( initial_teb.teb_sel ); initial_teb.process = ¤t_process; SYSDEPS_SetCurThread( &initial_teb ); wine_errno_location = thread_errno_location; wine_h_errno_location = thread_h_errno_location; } } DECL_GLOBAL_CONSTRUCTOR(thread_init) { THREAD_Init(); } /*********************************************************************** * THREAD_Start * * Start execution of a newly created thread. Does not return. */ static void THREAD_Start(void) { LPTHREAD_START_ROUTINE func = (LPTHREAD_START_ROUTINE)NtCurrentTeb()->entry_point; if (TRACE_ON(relay)) DPRINTF("%08lx:Starting thread (entryproc=%p)\n", GetCurrentThreadId(), func ); PROCESS_CallUserSignalProc( USIG_THREAD_INIT, 0 ); MODULE_DllThreadAttach( NULL ); ExitThread( func( NtCurrentTeb()->entry_arg ) ); } /*********************************************************************** * CreateThread (KERNEL32.@) */ HANDLE WINAPI CreateThread( SECURITY_ATTRIBUTES *sa, SIZE_T stack, LPTHREAD_START_ROUTINE start, LPVOID param, DWORD flags, LPDWORD id ) { HANDLE handle = 0; TEB *teb; DWORD tid = 0; int request_pipe[2]; if (pipe( request_pipe ) == -1) { SetLastError( ERROR_TOO_MANY_OPEN_FILES ); return 0; } fcntl( request_pipe[1], F_SETFD, 1 ); /* set close on exec flag */ wine_server_send_fd( request_pipe[0] ); SERVER_START_REQ( new_thread ) { req->suspend = ((flags & CREATE_SUSPENDED) != 0); req->inherit = (sa && (sa->nLength>=sizeof(*sa)) && sa->bInheritHandle); req->request_fd = request_pipe[0]; if (!wine_server_call_err( req )) { handle = reply->handle; tid = reply->tid; } close( request_pipe[0] ); } SERVER_END_REQ; if (!handle || !(teb = THREAD_InitStack( NULL, stack ))) { close( request_pipe[1] ); return 0; } teb->process = NtCurrentTeb()->process; teb->tid = tid; teb->request_fd = request_pipe[1]; teb->entry_point = start; teb->entry_arg = param; teb->startup = THREAD_Start; teb->htask16 = GetCurrentTask(); if (id) *id = tid; if (SYSDEPS_SpawnThread( teb ) == -1) { CloseHandle( handle ); close( request_pipe[1] ); THREAD_FreeTEB( teb ); return 0; } return handle; } /*********************************************************************** * CreateThread16 (KERNEL.441) */ static DWORD CALLBACK THREAD_StartThread16( LPVOID threadArgs ) { FARPROC16 start = ((FARPROC16 *)threadArgs)[0]; DWORD param = ((DWORD *)threadArgs)[1]; HeapFree( GetProcessHeap(), 0, threadArgs ); ((LPDWORD)CURRENT_STACK16)[-1] = param; return wine_call_to_16_long( start, sizeof(DWORD) ); } HANDLE WINAPI CreateThread16( SECURITY_ATTRIBUTES *sa, DWORD stack, FARPROC16 start, SEGPTR param, DWORD flags, LPDWORD id ) { DWORD *threadArgs = HeapAlloc( GetProcessHeap(), 0, 2*sizeof(DWORD) ); if (!threadArgs) return INVALID_HANDLE_VALUE; threadArgs[0] = (DWORD)start; threadArgs[1] = (DWORD)param; return CreateThread( sa, stack, THREAD_StartThread16, threadArgs, flags, id ); } /*********************************************************************** * ExitThread [KERNEL32.@] Ends a thread * * RETURNS * None */ void WINAPI ExitThread( DWORD code ) /* [in] Exit code for this thread */ { BOOL last; SERVER_START_REQ( terminate_thread ) { /* send the exit code to the server */ req->handle = GetCurrentThread(); req->exit_code = code; wine_server_call( req ); last = reply->last; } SERVER_END_REQ; if (last) { MODULE_DllProcessDetach( TRUE, (LPVOID)1 ); exit( code ); } else { MODULE_DllThreadDetach( NULL ); if (!(NtCurrentTeb()->tibflags & TEBF_WIN32)) TASK_ExitTask(); SYSDEPS_ExitThread( code ); } } /*********************************************************************** * OpenThread Retrieves a handle to a thread from its thread id * * RETURNS * None */ HANDLE WINAPI OpenThread( DWORD dwDesiredAccess, BOOL bInheritHandle, DWORD dwThreadId ) { HANDLE ret = 0; SERVER_START_REQ( open_thread ) { req->tid = dwThreadId; req->access = dwDesiredAccess; req->inherit = bInheritHandle; if (!wine_server_call_err( req )) ret = reply->handle; } SERVER_END_REQ; return ret; } /*********************************************************************** * SetThreadContext [KERNEL32.@] Sets context of thread. * * RETURNS * Success: TRUE * Failure: FALSE */ BOOL WINAPI SetThreadContext( HANDLE handle, /* [in] Handle to thread with context */ const CONTEXT *context ) /* [in] Address of context structure */ { BOOL ret; SERVER_START_REQ( set_thread_context ) { req->handle = handle; req->flags = context->ContextFlags; wine_server_add_data( req, context, sizeof(*context) ); ret = !wine_server_call_err( req ); } SERVER_END_REQ; return ret; } /*********************************************************************** * GetThreadContext [KERNEL32.@] Retrieves context of thread. * * RETURNS * Success: TRUE * Failure: FALSE */ BOOL WINAPI GetThreadContext( HANDLE handle, /* [in] Handle to thread with context */ CONTEXT *context ) /* [out] Address of context structure */ { BOOL ret; SERVER_START_REQ( get_thread_context ) { req->handle = handle; req->flags = context->ContextFlags; wine_server_add_data( req, context, sizeof(*context) ); wine_server_set_reply( req, context, sizeof(*context) ); ret = !wine_server_call_err( req ); } SERVER_END_REQ; return ret; } /********************************************************************** * GetThreadPriority [KERNEL32.@] Returns priority for thread. * * RETURNS * Success: Thread's priority level. * Failure: THREAD_PRIORITY_ERROR_RETURN */ INT WINAPI GetThreadPriority( HANDLE hthread) /* [in] Handle to thread */ { INT ret = THREAD_PRIORITY_ERROR_RETURN; SERVER_START_REQ( get_thread_info ) { req->handle = hthread; req->tid_in = 0; if (!wine_server_call_err( req )) ret = reply->priority; } SERVER_END_REQ; return ret; } /********************************************************************** * SetThreadPriority [KERNEL32.@] Sets priority for thread. * * RETURNS * Success: TRUE * Failure: FALSE */ BOOL WINAPI SetThreadPriority( HANDLE hthread, /* [in] Handle to thread */ INT priority) /* [in] Thread priority level */ { BOOL ret; SERVER_START_REQ( set_thread_info ) { req->handle = hthread; req->priority = priority; req->mask = SET_THREAD_INFO_PRIORITY; ret = !wine_server_call_err( req ); } SERVER_END_REQ; return ret; } /********************************************************************** * GetThreadPriorityBoost [KERNEL32.@] Returns priority boost for thread. * * Always reports that priority boost is disabled. * * RETURNS * Success: TRUE. * Failure: FALSE */ BOOL WINAPI GetThreadPriorityBoost( HANDLE hthread, /* [in] Handle to thread */ PBOOL pstate) /* [out] pointer to var that receives the boost state */ { if (pstate) *pstate = FALSE; return NO_ERROR; } /********************************************************************** * SetThreadPriorityBoost [KERNEL32.@] Sets priority boost for thread. * * Priority boost is not implemented. Thsi function always returns * FALSE and sets last error to ERROR_CALL_NOT_IMPLEMENTED * * RETURNS * Always returns FALSE to indicate a failure */ BOOL WINAPI SetThreadPriorityBoost( HANDLE hthread, /* [in] Handle to thread */ BOOL disable) /* [in] TRUE to disable priority boost */ { SetLastError(ERROR_CALL_NOT_IMPLEMENTED); return FALSE; } /********************************************************************** * SetThreadAffinityMask (KERNEL32.@) */ DWORD WINAPI SetThreadAffinityMask( HANDLE hThread, DWORD dwThreadAffinityMask ) { DWORD ret; SERVER_START_REQ( set_thread_info ) { req->handle = hThread; req->affinity = dwThreadAffinityMask; req->mask = SET_THREAD_INFO_AFFINITY; ret = !wine_server_call_err( req ); /* FIXME: should return previous value */ } SERVER_END_REQ; return ret; } /********************************************************************** * SetThreadIdealProcessor [KERNEL32.@] Obtains timing information. * * RETURNS * Success: Value of last call to SetThreadIdealProcessor * Failure: -1 */ DWORD WINAPI SetThreadIdealProcessor( HANDLE hThread, /* [in] Specifies the thread of interest */ DWORD dwIdealProcessor) /* [in] Specifies the new preferred processor */ { FIXME("(0x%08x): stub\n",hThread); SetLastError(ERROR_CALL_NOT_IMPLEMENTED); return -1L; } /********************************************************************** * TerminateThread [KERNEL32.@] Terminates a thread * * RETURNS * Success: TRUE * Failure: FALSE */ BOOL WINAPI TerminateThread( HANDLE handle, /* [in] Handle to thread */ DWORD exit_code) /* [in] Exit code for thread */ { NTSTATUS status = NtTerminateThread( handle, exit_code ); if (status) SetLastError( RtlNtStatusToDosError(status) ); return !status; } /********************************************************************** * GetExitCodeThread (KERNEL32.@) * * Gets termination status of thread. * * RETURNS * Success: TRUE * Failure: FALSE */ BOOL WINAPI GetExitCodeThread( HANDLE hthread, /* [in] Handle to thread */ LPDWORD exitcode) /* [out] Address to receive termination status */ { BOOL ret; SERVER_START_REQ( get_thread_info ) { req->handle = hthread; req->tid_in = 0; ret = !wine_server_call_err( req ); if (ret && exitcode) *exitcode = reply->exit_code; } SERVER_END_REQ; return ret; } /********************************************************************** * ResumeThread [KERNEL32.@] Resumes a thread. * * Decrements a thread's suspend count. When count is zero, the * execution of the thread is resumed. * * RETURNS * Success: Previous suspend count * Failure: 0xFFFFFFFF * Already running: 0 */ DWORD WINAPI ResumeThread( HANDLE hthread) /* [in] Identifies thread to restart */ { DWORD ret = 0xffffffff; SERVER_START_REQ( resume_thread ) { req->handle = hthread; if (!wine_server_call_err( req )) ret = reply->count; } SERVER_END_REQ; return ret; } /********************************************************************** * SuspendThread [KERNEL32.@] Suspends a thread. * * RETURNS * Success: Previous suspend count * Failure: 0xFFFFFFFF */ DWORD WINAPI SuspendThread( HANDLE hthread) /* [in] Handle to the thread */ { DWORD ret = 0xffffffff; SERVER_START_REQ( suspend_thread ) { req->handle = hthread; if (!wine_server_call_err( req )) ret = reply->count; } SERVER_END_REQ; return ret; } /*********************************************************************** * QueueUserAPC (KERNEL32.@) */ DWORD WINAPI QueueUserAPC( PAPCFUNC func, HANDLE hthread, ULONG_PTR data ) { DWORD ret; SERVER_START_REQ( queue_apc ) { req->handle = hthread; req->user = 1; req->func = func; req->param = (void *)data; ret = !wine_server_call_err( req ); } SERVER_END_REQ; return ret; } /********************************************************************** * GetThreadTimes [KERNEL32.@] Obtains timing information. * * NOTES * What are the fields where these values are stored? * * RETURNS * Success: TRUE * Failure: FALSE */ BOOL WINAPI GetThreadTimes( HANDLE thread, /* [in] Specifies the thread of interest */ LPFILETIME creationtime, /* [out] When the thread was created */ LPFILETIME exittime, /* [out] When the thread was destroyed */ LPFILETIME kerneltime, /* [out] Time thread spent in kernel mode */ LPFILETIME usertime) /* [out] Time thread spent in user mode */ { FIXME("(0x%08x): stub\n",thread); SetLastError(ERROR_CALL_NOT_IMPLEMENTED); return FALSE; } /********************************************************************** * VWin32_BoostThreadGroup [KERNEL.535] */ VOID WINAPI VWin32_BoostThreadGroup( DWORD threadId, INT boost ) { FIXME("(0x%08lx,%d): stub\n", threadId, boost); } /********************************************************************** * VWin32_BoostThreadStatic [KERNEL.536] */ VOID WINAPI VWin32_BoostThreadStatic( DWORD threadId, INT boost ) { FIXME("(0x%08lx,%d): stub\n", threadId, boost); } /*********************************************************************** * GetCurrentThread [KERNEL32.@] Gets pseudohandle for current thread * * RETURNS * Pseudohandle for the current thread */ #undef GetCurrentThread HANDLE WINAPI GetCurrentThread(void) { return (HANDLE)0xfffffffe; } /*********************************************************************** * ProcessIdToSessionId (KERNEL32.@) * This function is available on Terminal Server 4SP4 and Windows 2000 */ BOOL WINAPI ProcessIdToSessionId( DWORD procid, DWORD *sessionid_ptr ) { /* According to MSDN, if the calling process is not in a terminal * services environment, then the sessionid returned is zero. */ *sessionid_ptr = 0; return TRUE; } /*********************************************************************** * SetThreadExecutionState (KERNEL32.@) * * Informs the system that activity is taking place for * power management purposes. */ EXECUTION_STATE WINAPI SetThreadExecutionState(EXECUTION_STATE flags) { static EXECUTION_STATE current = ES_SYSTEM_REQUIRED|ES_DISPLAY_REQUIRED|ES_USER_PRESENT; EXECUTION_STATE old = current; if (!(current & ES_CONTINUOUS) || (flags & ES_CONTINUOUS)) current = flags; FIXME("(0x%lx): stub, harmless (power management).\n", flags); return old; } #ifdef __i386__ /*********************************************************************** * SetLastError (KERNEL.147) * SetLastError (KERNEL32.@) */ /* void WINAPI SetLastError( DWORD error ); */ __ASM_GLOBAL_FUNC( SetLastError, "movl 4(%esp),%eax\n\t" ".byte 0x64\n\t" "movl %eax,0x60\n\t" "ret $4" ); /*********************************************************************** * GetLastError (KERNEL.148) * GetLastError (KERNEL32.@) */ /* DWORD WINAPI GetLastError(void); */ __ASM_GLOBAL_FUNC( GetLastError, ".byte 0x64\n\tmovl 0x60,%eax\n\tret" ); /*********************************************************************** * GetCurrentProcessId (KERNEL.471) * GetCurrentProcessId (KERNEL32.@) */ /* DWORD WINAPI GetCurrentProcessId(void) */ __ASM_GLOBAL_FUNC( GetCurrentProcessId, ".byte 0x64\n\tmovl 0x20,%eax\n\tret" ); /*********************************************************************** * GetCurrentThreadId (KERNEL.462) * GetCurrentThreadId (KERNEL32.@) */ /* DWORD WINAPI GetCurrentThreadId(void) */ __ASM_GLOBAL_FUNC( GetCurrentThreadId, ".byte 0x64\n\tmovl 0x24,%eax\n\tret" ); #else /* __i386__ */ /********************************************************************** * SetLastError (KERNEL.147) * SetLastError (KERNEL32.@) * * Sets the last-error code. */ void WINAPI SetLastError( DWORD error ) /* [in] Per-thread error code */ { NtCurrentTeb()->last_error = error; } /********************************************************************** * GetLastError (KERNEL.148) * GetLastError (KERNEL32.@) * * Returns last-error code. */ DWORD WINAPI GetLastError(void) { return NtCurrentTeb()->last_error; } /*********************************************************************** * GetCurrentProcessId (KERNEL.471) * GetCurrentProcessId (KERNEL32.@) * * Returns process identifier. */ DWORD WINAPI GetCurrentProcessId(void) { return (DWORD)NtCurrentTeb()->pid; } /*********************************************************************** * GetCurrentThreadId (KERNEL.462) * GetCurrentThreadId (KERNEL32.@) * * Returns thread identifier. */ DWORD WINAPI GetCurrentThreadId(void) { return (DWORD)NtCurrentTeb()->tid; } #endif /* __i386__ */