| 1 | /* $Id: thread2-r0drv-nt.cpp 4229 2007-08-19 16:24:51Z vboxsync $ */
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| 2 | /** @file
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| 3 | * innotek Portable Runtime - 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 innotek GmbH
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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 as published by the Free Software Foundation,
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| 13 | * in version 2 as it comes in the "COPYING" file of the VirtualBox OSE
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| 14 | * distribution. VirtualBox OSE is distributed in the hope that it will
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| 15 | * be useful, but WITHOUT ANY WARRANTY of any kind.
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| 16 | */
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| 17 |
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| 18 | /*******************************************************************************
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| 19 | * Header Files *
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| 20 | *******************************************************************************/
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| 21 | #include "the-nt-kernel.h"
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| 22 |
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| 23 | #include <iprt/thread.h>
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| 24 | #include <iprt/assert.h>
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| 25 | #include <iprt/err.h>
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| 26 |
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| 27 | #include "internal/thread.h"
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| 28 |
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| 29 |
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| 30 | int rtThreadNativeInit(void)
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| 31 | {
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| 32 | /* No TLS in Ring-0. :-/ */
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| 33 | return VINF_SUCCESS;
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| 34 | }
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| 35 |
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| 36 |
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| 37 | RTDECL(RTTHREAD) RTThreadSelf(void)
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| 38 | {
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| 39 | return rtThreadGetByNative((RTNATIVETHREAD)PsGetCurrentThread());
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| 40 | }
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| 41 |
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| 42 |
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| 43 | int rtThreadNativeSetPriority(PRTTHREADINT pThread, RTTHREADTYPE enmType)
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| 44 | {
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| 45 | /*
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| 46 | * Convert the IPRT priority type to NT priority.
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| 47 | *
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| 48 | * The NT priority is in the range 0..32, with realtime starting
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| 49 | * at 16 and the default for user processes at 8. (Should try find
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| 50 | * the appropriate #defines for some of this...)
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| 51 | */
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| 52 | KPRIORITY Priority;
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| 53 | switch (enmType)
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| 54 | {
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| 55 | case RTTHREADTYPE_INFREQUENT_POLLER: Priority = 6; break;
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| 56 | case RTTHREADTYPE_EMULATION: Priority = 7; break;
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| 57 | case RTTHREADTYPE_DEFAULT: Priority = 8; break;
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| 58 | case RTTHREADTYPE_MSG_PUMP: Priority = 9; break;
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| 59 | case RTTHREADTYPE_IO: Priority = LOW_REALTIME_PRIORITY; break;
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| 60 | case RTTHREADTYPE_TIMER: Priority = MAXIMUM_PRIORITY; break;
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| 61 |
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| 62 | default:
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| 63 | AssertMsgFailed(("enmType=%d\n", enmType));
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| 64 | return VERR_INVALID_PARAMETER;
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| 65 | }
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| 66 |
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| 67 | /*
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| 68 | * Do the actual modification.
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| 69 | */
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| 70 | NTSTATUS rc = KeSetPriorityThread((PKTHREAD)pThread->Core.Key, Priority);
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| 71 | AssertMsg(NT_SUCCESS(rc), ("%#x\n", rc));
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| 72 | return RTErrConvertFromNtStatus(rc);
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| 73 | }
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| 74 |
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| 75 |
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| 76 | int rtThreadNativeAdopt(PRTTHREADINT pThread)
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| 77 | {
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| 78 | return VERR_NOT_IMPLEMENTED;
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| 79 | }
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| 80 |
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| 81 |
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| 82 | /**
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| 83 | * Native kernel thread wrapper function.
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| 84 | *
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| 85 | * This will forward to rtThreadMain and do termination upon return.
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| 86 | *
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| 87 | * @param pvArg Pointer to the argument package.
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| 88 | */
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| 89 | static VOID __stdcall rtThreadNativeMain(PVOID pvArg)
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| 90 | {
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| 91 | PETHREAD Self = PsGetCurrentThread();
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| 92 | PRTTHREADINT pThread = (PRTTHREADINT)pvArg;
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| 93 |
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| 94 | rtThreadMain(pThread, (RTNATIVETHREAD)Self, &pThread->szName[0]);
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| 95 |
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| 96 | ObDereferenceObject(Self); /* the rtThreadNativeCreate ref. */
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| 97 | }
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| 98 |
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| 99 |
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| 100 | int rtThreadNativeCreate(PRTTHREADINT pThreadInt, PRTNATIVETHREAD pNativeThread)
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| 101 | {
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| 102 | /*
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| 103 | * PsCreateSysemThread create a thread an give us a handle in return.
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| 104 | * We requests the object for that handle and then close it, so what
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| 105 | * we keep around is the pointer to the thread object and not a handle.
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| 106 | * The thread will dereference the object before returning.
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| 107 | */
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| 108 | HANDLE hThread = NULL;
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| 109 | OBJECT_ATTRIBUTES ObjAttr;
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| 110 | InitializeObjectAttributes(&ObjAttr, NULL, OBJ_KERNEL_HANDLE, NULL, NULL);
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| 111 | NTSTATUS rc = PsCreateSystemThread(&hThread,
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| 112 | THREAD_ALL_ACCESS,
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| 113 | &ObjAttr,
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| 114 | NULL /* ProcessHandle - kernel */,
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| 115 | NULL /* ClientID - kernel */,
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| 116 | rtThreadNativeMain,
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| 117 | pThreadInt);
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| 118 | if (NT_SUCCESS(rc))
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| 119 | {
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| 120 | PVOID pvThreadObj;
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| 121 | rc = ObReferenceObjectByHandle(hThread, THREAD_ALL_ACCESS, NULL /* object type */,
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| 122 | KernelMode, &pvThreadObj, NULL /* handle info */);
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| 123 | if (NT_SUCCESS(rc))
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| 124 | {
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| 125 | ZwClose(hThread);
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| 126 | *pNativeThread = (RTNATIVETHREAD)pvThreadObj;
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| 127 | }
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| 128 | else
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| 129 | AssertMsgFailed(("%#x\n", rc));
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| 130 | }
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| 131 | return RTErrConvertFromNtStatus(rc);
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| 132 | }
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| 133 |
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