| 1 | /* $Id: thread2-r0drv-linux.c 44528 2013-02-04 14:27:54Z vboxsync $ */
|
|---|
| 2 | /** @file
|
|---|
| 3 | * IPRT - Threads (Part 2), Ring-0 Driver, Linux.
|
|---|
| 4 | */
|
|---|
| 5 |
|
|---|
| 6 | /*
|
|---|
| 7 | * Copyright (C) 2006-2012 Oracle Corporation
|
|---|
| 8 | *
|
|---|
| 9 | * This file is part of VirtualBox Open Source Edition (OSE), as
|
|---|
| 10 | * available from http://www.virtualbox.org. This file is free software;
|
|---|
| 11 | * you can redistribute it and/or modify it under the terms of the GNU
|
|---|
| 12 | * General Public License (GPL) as published by the Free Software
|
|---|
| 13 | * Foundation, in version 2 as it comes in the "COPYING" file of the
|
|---|
| 14 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
|
|---|
| 15 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
|
|---|
| 16 | *
|
|---|
| 17 | * The contents of this file may alternatively be used under the terms
|
|---|
| 18 | * of the Common Development and Distribution License Version 1.0
|
|---|
| 19 | * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
|
|---|
| 20 | * VirtualBox OSE distribution, in which case the provisions of the
|
|---|
| 21 | * CDDL are applicable instead of those of the GPL.
|
|---|
| 22 | *
|
|---|
| 23 | * You may elect to license modified versions of this file under the
|
|---|
| 24 | * terms and conditions of either the GPL or the CDDL or both.
|
|---|
| 25 | */
|
|---|
| 26 |
|
|---|
| 27 |
|
|---|
| 28 | /*******************************************************************************
|
|---|
| 29 | * Header Files *
|
|---|
| 30 | *******************************************************************************/
|
|---|
| 31 | #include "the-linux-kernel.h"
|
|---|
| 32 | #include "internal/iprt.h"
|
|---|
| 33 |
|
|---|
| 34 | #include <iprt/assert.h>
|
|---|
| 35 | #include <iprt/thread.h>
|
|---|
| 36 | #include <iprt/err.h>
|
|---|
| 37 | #include "internal/thread.h"
|
|---|
| 38 |
|
|---|
| 39 |
|
|---|
| 40 | RTDECL(RTTHREAD) RTThreadSelf(void)
|
|---|
| 41 | {
|
|---|
| 42 | return rtThreadGetByNative((RTNATIVETHREAD)current);
|
|---|
| 43 | }
|
|---|
| 44 |
|
|---|
| 45 |
|
|---|
| 46 | DECLHIDDEN(int) rtThreadNativeInit(void)
|
|---|
| 47 | {
|
|---|
| 48 | return VINF_SUCCESS;
|
|---|
| 49 | }
|
|---|
| 50 |
|
|---|
| 51 |
|
|---|
| 52 | DECLHIDDEN(int) rtThreadNativeSetPriority(PRTTHREADINT pThread, RTTHREADTYPE enmType)
|
|---|
| 53 | {
|
|---|
| 54 | #if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 11)
|
|---|
| 55 | /* See comment near MAX_RT_PRIO in linux/sched.h for details on
|
|---|
| 56 | sched_priority. */
|
|---|
| 57 | int iSchedClass = SCHED_NORMAL;
|
|---|
| 58 | struct sched_param Param = { .sched_priority = MAX_PRIO - 1 };
|
|---|
| 59 | switch (enmType)
|
|---|
| 60 | {
|
|---|
| 61 | case RTTHREADTYPE_INFREQUENT_POLLER:
|
|---|
| 62 | Param.sched_priority = MAX_RT_PRIO + 5;
|
|---|
| 63 | break;
|
|---|
| 64 |
|
|---|
| 65 | case RTTHREADTYPE_EMULATION:
|
|---|
| 66 | Param.sched_priority = MAX_RT_PRIO + 4;
|
|---|
| 67 | break;
|
|---|
| 68 |
|
|---|
| 69 | case RTTHREADTYPE_DEFAULT:
|
|---|
| 70 | Param.sched_priority = MAX_RT_PRIO + 3;
|
|---|
| 71 | break;
|
|---|
| 72 |
|
|---|
| 73 | case RTTHREADTYPE_MSG_PUMP:
|
|---|
| 74 | Param.sched_priority = MAX_RT_PRIO + 2;
|
|---|
| 75 | break;
|
|---|
| 76 |
|
|---|
| 77 | case RTTHREADTYPE_IO:
|
|---|
| 78 | iSchedClass = SCHED_FIFO;
|
|---|
| 79 | Param.sched_priority = MAX_RT_PRIO - 1;
|
|---|
| 80 | break;
|
|---|
| 81 |
|
|---|
| 82 | case RTTHREADTYPE_TIMER:
|
|---|
| 83 | iSchedClass = SCHED_FIFO;
|
|---|
| 84 | Param.sched_priority = 1; /* not 0 just in case */
|
|---|
| 85 | break;
|
|---|
| 86 |
|
|---|
| 87 | default:
|
|---|
| 88 | AssertMsgFailed(("enmType=%d\n", enmType));
|
|---|
| 89 | return VERR_INVALID_PARAMETER;
|
|---|
| 90 | }
|
|---|
| 91 |
|
|---|
| 92 | sched_setscheduler(current, iSchedClass, &Param);
|
|---|
| 93 | #endif
|
|---|
| 94 |
|
|---|
| 95 | return VINF_SUCCESS;
|
|---|
| 96 | }
|
|---|
| 97 |
|
|---|
| 98 |
|
|---|
| 99 | DECLHIDDEN(int) rtThreadNativeAdopt(PRTTHREADINT pThread)
|
|---|
| 100 | {
|
|---|
| 101 | return VERR_NOT_IMPLEMENTED;
|
|---|
| 102 | }
|
|---|
| 103 |
|
|---|
| 104 |
|
|---|
| 105 | DECLHIDDEN(void) rtThreadNativeDestroy(PRTTHREADINT pThread)
|
|---|
| 106 | {
|
|---|
| 107 | NOREF(pThread);
|
|---|
| 108 | }
|
|---|
| 109 |
|
|---|
| 110 |
|
|---|
| 111 | #if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 4)
|
|---|
| 112 | /**
|
|---|
| 113 | * Native kernel thread wrapper function.
|
|---|
| 114 | *
|
|---|
| 115 | * This will forward to rtThreadMain and do termination upon return.
|
|---|
| 116 | *
|
|---|
| 117 | * @param pvArg Pointer to the argument package.
|
|---|
| 118 | */
|
|---|
| 119 | static int rtThreadNativeMain(void *pvArg)
|
|---|
| 120 | {
|
|---|
| 121 | PRTTHREADINT pThread = (PRTTHREADINT)pvArg;
|
|---|
| 122 |
|
|---|
| 123 | rtThreadMain(pThread, (RTNATIVETHREAD)current, &pThread->szName[0]);
|
|---|
| 124 | return 0;
|
|---|
| 125 | }
|
|---|
| 126 | #endif
|
|---|
| 127 |
|
|---|
| 128 |
|
|---|
| 129 | DECLHIDDEN(int) rtThreadNativeCreate(PRTTHREADINT pThreadInt, PRTNATIVETHREAD pNativeThread)
|
|---|
| 130 | {
|
|---|
| 131 | #if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 4)
|
|---|
| 132 | struct task_struct *NativeThread;
|
|---|
| 133 |
|
|---|
| 134 | RT_ASSERT_PREEMPTIBLE();
|
|---|
| 135 |
|
|---|
| 136 | NativeThread = kthread_run(rtThreadNativeMain, pThreadInt, "iprt-%s", pThreadInt->szName);
|
|---|
| 137 |
|
|---|
| 138 | if (IS_ERR(NativeThread))
|
|---|
| 139 | return VERR_GENERAL_FAILURE;
|
|---|
| 140 |
|
|---|
| 141 | *pNativeThread = (RTNATIVETHREAD)NativeThread;
|
|---|
| 142 | return VINF_SUCCESS;
|
|---|
| 143 | #else
|
|---|
| 144 | return VERR_NOT_IMPLEMENTED;
|
|---|
| 145 | #endif
|
|---|
| 146 | }
|
|---|
| 147 |
|
|---|
