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