ntoskrnl/ke/kthread.c

   1 /*
   2  *  ReactOS kernel
   3  *  Copyright (C) 2000  ReactOS Team
   4  *
   5  *  This program is free software; you can redistribute it and/or modify
   6  *  it under the terms of the GNU General Public License as published by
   7  *  the Free Software Foundation; either version 2 of the License, or
   8  *  (at your option) any later version.
   9  *
  10  *  This program is distributed in the hope that it will be useful,
  11  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  *  GNU General Public License for more details.
  14  *
  15  *  You should have received a copy of the GNU General Public License
  16  *  along with this program; if not, write to the Free Software
  17  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  18  */
  19 /* $Id$
  20  *
  21  * FILE:            ntoskrnl/ke/kthread.c
  22  * PURPOSE:         Microkernel thread support
  23  * PROGRAMMER:      David Welch (welch@cwcom.net)
  24  * UPDATE HISTORY:
  25  *                  Created 22/05/98
  26  */
  27
  28 /* INCLUDES *****************************************************************/
  29
  30 #include <ddk/ntddk.h>
  31 #include <internal/ke.h>
  32 #include <internal/ps.h>
  33 #include <internal/id.h>
  34 #include <internal/pool.h>
  35
  36 #define NDEBUG
  37 #include <internal/debug.h>
  38
  39 /* FUNCTIONS *****************************************************************/
  40
  41 VOID
  42 KeFreeStackPage(PVOID Context, MEMORY_AREA* MemoryArea, PVOID Address,
  43                 PHYSICAL_ADDRESS PhysAddr, SWAPENTRY SwapEntry, BOOLEAN Dirty)
  44 {
  45   assert(SwapEntry == 0);
  46   if (PhysAddr.QuadPart  != 0)
  47     {
  48       MmReleasePageMemoryConsumer(MC_NPPOOL, PhysAddr);
  49     }
  50 }
  51
  52 NTSTATUS
  53 KeReleaseThread(PETHREAD Thread)
  54 /*
  55  * FUNCTION: Releases the resource allocated for a thread by
  56  * KeInitializeThread
  57  * NOTE: The thread had better not be running when this is called
  58  */
  59 {
  60   extern unsigned int init_stack;
  61
  62   if (Thread->Tcb.StackLimit != (ULONG)&init_stack)
  63     {
  64       MmLockAddressSpace(MmGetKernelAddressSpace());
  65       MmFreeMemoryArea(MmGetKernelAddressSpace(),
  66                        (PVOID)Thread->Tcb.StackLimit,
  67                        MM_STACK_SIZE,
  68                        KeFreeStackPage,
  69                        NULL);
  70       MmUnlockAddressSpace(MmGetKernelAddressSpace());
  71     }
  72   Thread->Tcb.StackLimit = 0;
  73   Thread->Tcb.InitialStack = NULL;
  74   Thread->Tcb.StackBase = NULL;
  75   Thread->Tcb.KernelStack = NULL;
  76   return(STATUS_SUCCESS);
  77 }
  78
  79 VOID
  80 KeInitializeThread(PKPROCESS Process, PKTHREAD Thread, BOOLEAN First)
  81 /*
  82  * FUNCTION: Initialize the microkernel state of the thread
  83  */
  84 {
  85   PVOID KernelStack;
  86   NTSTATUS Status;
  87   extern unsigned int init_stack_top;
  88   extern unsigned int init_stack;
  89   PMEMORY_AREA StackArea;
  90   ULONG i;
  91
  92   KeInitializeDispatcherHeader(&Thread->DispatcherHeader,
  93                                InternalThreadType,
  94                                sizeof(ETHREAD),
  95                                FALSE);
  96   InitializeListHead(&Thread->MutantListHead);
  97   if (!First)
  98     {
  99       KernelStack = NULL;
 100
 101       MmLockAddressSpace(MmGetKernelAddressSpace());
 102       Status = MmCreateMemoryArea(NULL,
 103                                   MmGetKernelAddressSpace(),
 104                                   MEMORY_AREA_KERNEL_STACK,
 105                                   &KernelStack,
 106                                   MM_STACK_SIZE,
 107                                   0,
 108                                   &StackArea,
 109                                   FALSE);
 110       MmUnlockAddressSpace(MmGetKernelAddressSpace());
 111
 112       if (!NT_SUCCESS(Status))
 113         {
 114           DPRINT1("Failed to create thread stack\n");
 115           KeBugCheck(0);
 116         }
 117       for (i = 0; i < (MM_STACK_SIZE / PAGE_SIZE); i++)
 118         {
 119           PHYSICAL_ADDRESS Page;
 120           Status = MmRequestPageMemoryConsumer(MC_NPPOOL, TRUE, &Page);
 121           if (!NT_SUCCESS(Status))
 122             {
 123               KeBugCheck(0);
 124             }
 125           Status = MmCreateVirtualMapping(NULL,
 126                                           KernelStack + (i * PAGE_SIZE),
 127                                           PAGE_EXECUTE_READWRITE,
 128                                           Page,
 129                                           TRUE);
 130         }
 131       Thread->InitialStack = KernelStack + MM_STACK_SIZE;
 132       Thread->StackBase = KernelStack + MM_STACK_SIZE;
 133       Thread->StackLimit = (ULONG)KernelStack;
 134       Thread->KernelStack = KernelStack + MM_STACK_SIZE;
 135     }
 136   else
 137     {
 138       Thread->InitialStack = (PVOID)&init_stack_top;
 139       Thread->StackBase = (PVOID)&init_stack_top;
 140       Thread->StackLimit = (ULONG)&init_stack;
 141       Thread->KernelStack = (PVOID)&init_stack_top;
 142     }
 143
 144   /*
 145    * The Native API function will initialize the TEB field later
 146    */
 147   Thread->Teb = NULL;
 148   Thread->TlsArray = NULL;
 149   Thread->DebugActive = 0;
 150   Thread->State = THREAD_STATE_INITIALIZED;
 151   Thread->Alerted[0] = 0;
 152   Thread->Alerted[1] = 0;
 153   Thread->Iopl = 0;
 154   /*
 155    * FIXME: Think how this might work
 156    */
 157   Thread->NpxState = 0;
 158
 159   Thread->Saturation = 0;
 160   Thread->Priority = 0;
 161   InitializeListHead(&Thread->ApcState.ApcListHead[0]);
 162   InitializeListHead(&Thread->ApcState.ApcListHead[1]);
 163   Thread->ApcState.Process = Process;
 164   Thread->ApcState.KernelApcInProgress = 0;
 165   Thread->ApcState.KernelApcPending = 0;
 166   Thread->ApcState.UserApcPending = 0;
 167   Thread->ContextSwitches = 0;
 168   Thread->WaitStatus = STATUS_SUCCESS;
 169   Thread->WaitIrql = 0;
 170   Thread->WaitMode = 0;
 171   Thread->WaitNext = 0;
 172   Thread->WaitBlockList = NULL;
 173   Thread->WaitListEntry.Flink = NULL;
 174   Thread->WaitListEntry.Blink = NULL;
 175   Thread->WaitTime = 0;
 176   Thread->BasePriority = 0;
 177   Thread->DecrementCount = 0;
 178   Thread->PriorityDecrement = 0;
 179   Thread->Quantum = 0;
 180   memset(Thread->WaitBlock, 0, sizeof(KWAIT_BLOCK)*4);
 181   Thread->LegoData = 0;
 182   /*
 183    * FIXME: Why this?
 184    */
 185   Thread->KernelApcDisable = 1;
 186   Thread->UserAffinity = Process->Affinity;
 187   Thread->SystemAffinityActive = 0;
 188   Thread->Queue = NULL;
 189   KeInitializeSpinLock(&Thread->ApcQueueLock);
 190   memset(&Thread->Timer, 0, sizeof(KTIMER));
 191   Thread->QueueListEntry.Flink = NULL;
 192   Thread->QueueListEntry.Blink = NULL;
 193   Thread->Affinity = Process->Affinity;
 194   Thread->Preempted = 0;
 195   Thread->ProcessReadyQueue = 0;
 196   Thread->KernelStackResident = 1;
 197   Thread->NextProcessor = 0;
 198   Thread->CallbackStack = NULL;
 199   Thread->Win32Thread = 0;
 200   Thread->TrapFrame = NULL;
 201   Thread->ApcStatePointer[0] = NULL;
 202   Thread->ApcStatePointer[1] = NULL;
 203   Thread->EnableStackSwap = 0;
 204   Thread->LargeStack = 0;
 205   Thread->ResourceIndex = 0;
 206   Thread->PreviousMode = KernelMode;
 207   Thread->KernelTime = 0;
 208   Thread->UserTime = 0;
 209   memset(&Thread->SavedApcState, 0, sizeof(KAPC_STATE));
 210   Thread->Alertable = 1;
 211   Thread->ApcStateIndex = 0;
 212   Thread->ApcQueueable = 0;
 213   Thread->AutoAlignment = 0;
 214   KeInitializeApc(&Thread->SuspendApc,
 215                   Thread,
 216                   0,
 217                   PiSuspendThreadKernelRoutine,
 218                   PiSuspendThreadRundownRoutine,
 219                   PiSuspendThreadNormalRoutine,
 220                   KernelMode,
 221                   NULL);
 222   KeInitializeSemaphore(&Thread->SuspendSemaphore, 0, 128);
 223   Thread->ThreadListEntry.Flink = NULL;
 224   Thread->ThreadListEntry.Blink = NULL;
 225   Thread->FreezeCount = 0;
 226   Thread->SuspendCount = 0;
 227
 228   /*
 229    * Initialize ReactOS specific members
 230    */
 231   Thread->ProcessThreadListEntry.Flink = NULL;
 232   Thread->ProcessThreadListEntry.Blink = NULL;
 233
 234    /*
 235     * Do x86 specific part
 236     */
 237 }
 238
 239 VOID STDCALL
 240 KeRescheduleThread()
 241 {
 242   PsDispatchThread(THREAD_STATE_READY);
 243 }