| 1 | /* $Id: thread2-r0drv-nt.cpp 8245 2008-04-21 17:24:28Z vboxsync $ */
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| 2 | /** @file
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| 3 | * IPRT - Threads (Part 2), Ring-0 Driver, NT.
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| 4 | */
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| 5 |
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| 6 | /*
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| 7 | * Copyright (C) 2006-2007 Sun Microsystems, Inc.
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| 8 | *
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| 9 | * This file is part of VirtualBox Open Source Edition (OSE), as
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| 10 | * available from http://www.virtualbox.org. This file is free software;
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| 11 | * you can redistribute it and/or modify it under the terms of the GNU
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| 12 | * General Public License (GPL) as published by the Free Software
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| 13 | * Foundation, in version 2 as it comes in the "COPYING" file of the
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| 14 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
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| 15 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
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| 16 | *
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| 17 | * The contents of this file may alternatively be used under the terms
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| 18 | * of the Common Development and Distribution License Version 1.0
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| 19 | * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
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| 20 | * VirtualBox OSE distribution, in which case the provisions of the
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| 21 | * CDDL are applicable instead of those of the GPL.
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| 22 | *
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| 23 | * You may elect to license modified versions of this file under the
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| 24 | * terms and conditions of either the GPL or the CDDL or both.
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| 25 | *
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| 26 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
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| 27 | * Clara, CA 95054 USA or visit http://www.sun.com if you need
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| 28 | * additional information or have any questions.
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| 29 | */
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| 30 |
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| 31 | /*******************************************************************************
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| 32 | * Header Files *
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| 33 | *******************************************************************************/
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| 34 | #include "the-nt-kernel.h"
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| 35 |
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| 36 | #include <iprt/thread.h>
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| 37 | #include <iprt/assert.h>
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| 38 | #include <iprt/err.h>
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| 39 |
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| 40 | #include "internal/thread.h"
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| 41 |
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| 42 |
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| 43 | int rtThreadNativeInit(void)
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| 44 | {
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| 45 | /* No TLS in Ring-0. :-/ */
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| 46 | return VINF_SUCCESS;
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| 47 | }
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| 48 |
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| 49 |
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| 50 | RTDECL(RTTHREAD) RTThreadSelf(void)
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| 51 | {
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| 52 | return rtThreadGetByNative((RTNATIVETHREAD)PsGetCurrentThread());
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| 53 | }
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| 54 |
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| 55 |
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| 56 | int rtThreadNativeSetPriority(PRTTHREADINT pThread, RTTHREADTYPE enmType)
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| 57 | {
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| 58 | /*
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| 59 | * Convert the IPRT priority type to NT priority.
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| 60 | *
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| 61 | * The NT priority is in the range 0..32, with realtime starting
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| 62 | * at 16 and the default for user processes at 8. (Should try find
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| 63 | * the appropriate #defines for some of this...)
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| 64 | */
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| 65 | KPRIORITY Priority;
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| 66 | switch (enmType)
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| 67 | {
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| 68 | case RTTHREADTYPE_INFREQUENT_POLLER: Priority = 6; break;
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| 69 | case RTTHREADTYPE_EMULATION: Priority = 7; break;
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| 70 | case RTTHREADTYPE_DEFAULT: Priority = 8; break;
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| 71 | case RTTHREADTYPE_MSG_PUMP: Priority = 9; break;
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| 72 | case RTTHREADTYPE_IO: Priority = LOW_REALTIME_PRIORITY; break;
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| 73 | case RTTHREADTYPE_TIMER: Priority = MAXIMUM_PRIORITY; break;
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| 74 |
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| 75 | default:
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| 76 | AssertMsgFailed(("enmType=%d\n", enmType));
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| 77 | return VERR_INVALID_PARAMETER;
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| 78 | }
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| 79 |
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| 80 | /*
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| 81 | * Do the actual modification.
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| 82 | */
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| 83 | NTSTATUS rc = KeSetPriorityThread((PKTHREAD)pThread->Core.Key, Priority);
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| 84 | AssertMsg(NT_SUCCESS(rc), ("%#x\n", rc));
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| 85 | return RTErrConvertFromNtStatus(rc);
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| 86 | }
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| 87 |
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| 88 |
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| 89 | int rtThreadNativeAdopt(PRTTHREADINT pThread)
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| 90 | {
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| 91 | return VERR_NOT_IMPLEMENTED;
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| 92 | }
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| 93 |
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| 94 |
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| 95 | /**
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| 96 | * Native kernel thread wrapper function.
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| 97 | *
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| 98 | * This will forward to rtThreadMain and do termination upon return.
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| 99 | *
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| 100 | * @param pvArg Pointer to the argument package.
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| 101 | */
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| 102 | static VOID __stdcall rtThreadNativeMain(PVOID pvArg)
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| 103 | {
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| 104 | PETHREAD Self = PsGetCurrentThread();
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| 105 | PRTTHREADINT pThread = (PRTTHREADINT)pvArg;
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| 106 |
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| 107 | rtThreadMain(pThread, (RTNATIVETHREAD)Self, &pThread->szName[0]);
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| 108 |
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| 109 | ObDereferenceObject(Self); /* the rtThreadNativeCreate ref. */
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| 110 | }
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| 111 |
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| 112 |
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| 113 | int rtThreadNativeCreate(PRTTHREADINT pThreadInt, PRTNATIVETHREAD pNativeThread)
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| 114 | {
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| 115 | /*
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| 116 | * PsCreateSysemThread create a thread an give us a handle in return.
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| 117 | * We requests the object for that handle and then close it, so what
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| 118 | * we keep around is the pointer to the thread object and not a handle.
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| 119 | * The thread will dereference the object before returning.
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| 120 | */
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| 121 | HANDLE hThread = NULL;
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| 122 | OBJECT_ATTRIBUTES ObjAttr;
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| 123 | InitializeObjectAttributes(&ObjAttr, NULL, OBJ_KERNEL_HANDLE, NULL, NULL);
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| 124 | NTSTATUS rc = PsCreateSystemThread(&hThread,
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| 125 | THREAD_ALL_ACCESS,
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| 126 | &ObjAttr,
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| 127 | NULL /* ProcessHandle - kernel */,
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| 128 | NULL /* ClientID - kernel */,
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| 129 | rtThreadNativeMain,
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| 130 | pThreadInt);
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| 131 | if (NT_SUCCESS(rc))
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| 132 | {
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| 133 | PVOID pvThreadObj;
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| 134 | rc = ObReferenceObjectByHandle(hThread, THREAD_ALL_ACCESS, NULL /* object type */,
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| 135 | KernelMode, &pvThreadObj, NULL /* handle info */);
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| 136 | if (NT_SUCCESS(rc))
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| 137 | {
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| 138 | ZwClose(hThread);
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| 139 | *pNativeThread = (RTNATIVETHREAD)pvThreadObj;
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| 140 | }
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| 141 | else
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| 142 | AssertMsgFailed(("%#x\n", rc));
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| 143 | }
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| 144 | return RTErrConvertFromNtStatus(rc);
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| 145 | }
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| 146 |
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