dlls/kernel32/thread.c

   1 /*
   2  * Win32 threads
   3  *
   4  * Copyright 1996 Alexandre Julliard
   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
  21 #include <assert.h>
  22 #include <stdarg.h>
  23 #include <sys/types.h>
  24
  25 #include "ntstatus.h"
  26 #define WIN32_NO_STATUS
  27 #include "windef.h"
  28 #include "winbase.h"
  29 #include "winerror.h"
  30 #include "winternl.h"
  31
  32 #include "wine/asm.h"
  33 #include "kernel_private.h"
  34
  35
  36 #ifdef __i386__
  37 __ASM_STDCALL_FUNC( __fastcall_BaseThreadInitThunk, 12,
  38                     "pushl %ebp\n\t"
  39                     __ASM_CFI(".cfi_adjust_cfa_offset 4\n\t")
  40                     __ASM_CFI(".cfi_rel_offset %ebp,0\n\t")
  41                     "movl %esp,%ebp\n\t"
  42                     __ASM_CFI(".cfi_def_cfa_register %ebp\n\t")
  43                     "pushl %ebx\n\t"
  44                     __ASM_CFI(".cfi_rel_offset %ebx,-4\n\t")
  45                     "movl 8(%ebp),%ebx\n\t"
  46                     /* deliberately mis-align the stack by 8, Doom 3 needs this */
  47                     "pushl 4(%ebp)\n\t"  /* Driller expects readable address at this offset */
  48                     "pushl 4(%ebp)\n\t"
  49                     "pushl %ebx\n\t"
  50                     "call *%edx\n\t"
  51                     "movl %eax,(%esp)\n\t"
  52                     "call " __ASM_STDCALL( "RtlExitUserThread", 4 ))
  53 #endif
  54
  55 /***********************************************************************
  56  *           BaseThreadInitThunk (KERNEL32.@)
  57  */
  58 void __fastcall BaseThreadInitThunk( DWORD unknown, LPTHREAD_START_ROUTINE entry, void *arg )
  59 {
  60     RtlExitUserThread( entry( arg ) );
  61 }
  62
  63
  64 /***********************************************************************
  65  *           FreeLibraryAndExitThread (KERNEL32.@)
  66  */
  67 void WINAPI FreeLibraryAndExitThread(HINSTANCE hLibModule, DWORD dwExitCode)
  68 {
  69     FreeLibrary(hLibModule);
  70     ExitThread(dwExitCode);
  71 }
  72
  73
  74 /***********************************************************************
  75  * Wow64SetThreadContext [KERNEL32.@]
  76  */
  77 BOOL WINAPI Wow64SetThreadContext( HANDLE handle, const WOW64_CONTEXT *context)
  78 {
  79 #ifdef __i386__
  80     return set_ntstatus( NtSetContextThread( handle, (const CONTEXT *)context ));
  81 #elif defined(__x86_64__)
  82     return set_ntstatus( RtlWow64SetThreadContext( handle, context ));
  83 #else
  84     return set_ntstatus( STATUS_NOT_IMPLEMENTED );
  85 #endif
  86 }
  87
  88 /***********************************************************************
  89  * Wow64GetThreadContext [KERNEL32.@]
  90  */
  91 BOOL WINAPI Wow64GetThreadContext( HANDLE handle, WOW64_CONTEXT *context)
  92 {
  93 #ifdef __i386__
  94     return set_ntstatus( NtGetContextThread( handle, (CONTEXT *)context ));
  95 #elif defined(__x86_64__)
  96     return set_ntstatus( RtlWow64GetThreadContext( handle, context ));
  97 #else
  98     return set_ntstatus( STATUS_NOT_IMPLEMENTED );
  99 #endif
 100 }
 101
 102
 103 /**********************************************************************
 104  *           SetThreadAffinityMask   (KERNEL32.@)
 105  */
 106 DWORD_PTR WINAPI SetThreadAffinityMask( HANDLE thread, DWORD_PTR mask )
 107 {
 108     THREAD_BASIC_INFORMATION tbi;
 109
 110     if (!set_ntstatus( NtQueryInformationThread( thread, ThreadBasicInformation, &tbi, sizeof(tbi), NULL )))
 111         return 0;
 112     if (!set_ntstatus( NtSetInformationThread( thread, ThreadAffinityMask, &mask, sizeof(mask))))
 113         return 0;
 114     return tbi.AffinityMask;
 115 }
 116
 117
 118 /***********************************************************************
 119  *           GetThreadSelectorEntry   (KERNEL32.@)
 120  */
 121 BOOL WINAPI GetThreadSelectorEntry( HANDLE thread, DWORD sel, LDT_ENTRY *ldtent )
 122 {
 123     THREAD_DESCRIPTOR_INFORMATION tdi;
 124
 125     tdi.Selector = sel;
 126     if (!set_ntstatus( NtQueryInformationThread( thread, ThreadDescriptorTableEntry,
 127                                                  &tdi, sizeof(tdi), NULL )))
 128         return FALSE;
 129     *ldtent = tdi.Entry;
 130     return TRUE;
 131 }
 132
 133
 134 /***********************************************************************
 135  * GetCurrentThread [KERNEL32.@]  Gets pseudohandle for current thread
 136  *
 137  * RETURNS
 138  *    Pseudohandle for the current thread
 139  */
 140 HANDLE WINAPI KERNEL32_GetCurrentThread(void)
 141 {
 142     return (HANDLE)~(ULONG_PTR)1;
 143 }
 144
 145 /***********************************************************************
 146  *              GetCurrentProcessId (KERNEL32.@)
 147  *
 148  * Get the current process identifier.
 149  *
 150  * RETURNS
 151  *  current process identifier
 152  */
 153 DWORD WINAPI KERNEL32_GetCurrentProcessId(void)
 154 {
 155     return HandleToULong(NtCurrentTeb()->ClientId.UniqueProcess);
 156 }
 157
 158 /***********************************************************************
 159  *              GetCurrentThreadId (KERNEL32.@)
 160  *
 161  * Get the current thread identifier.
 162  *
 163  * RETURNS
 164  *  current thread identifier
 165  */
 166 DWORD WINAPI KERNEL32_GetCurrentThreadId(void)
 167 {
 168     return HandleToULong(NtCurrentTeb()->ClientId.UniqueThread);
 169 }