| 1 | /* $Id: PDMAllTask.cpp 93115 2022-01-01 11:31:46Z vboxsync $ */
|
|---|
| 2 | /** @file
|
|---|
| 3 | * PDM Task - Asynchronous user mode tasks, all context code.
|
|---|
| 4 | */
|
|---|
| 5 |
|
|---|
| 6 | /*
|
|---|
| 7 | * Copyright (C) 2019-2022 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 |
|
|---|
| 18 |
|
|---|
| 19 | /*********************************************************************************************************************************
|
|---|
| 20 | * Header Files *
|
|---|
| 21 | *********************************************************************************************************************************/
|
|---|
| 22 | #define LOG_GROUP LOG_GROUP_PDM_TASK
|
|---|
| 23 | #include "PDMInternal.h"
|
|---|
| 24 | #include <VBox/vmm/pdmtask.h>
|
|---|
| 25 | #include <VBox/vmm/gvm.h>
|
|---|
| 26 | #include <VBox/err.h>
|
|---|
| 27 |
|
|---|
| 28 | #include <VBox/log.h>
|
|---|
| 29 | #include <VBox/sup.h>
|
|---|
| 30 | #include <iprt/asm.h>
|
|---|
| 31 | #include <iprt/assert.h>
|
|---|
| 32 | #include <iprt/semaphore.h>
|
|---|
| 33 |
|
|---|
| 34 |
|
|---|
| 35 |
|
|---|
| 36 | /**
|
|---|
| 37 | * Triggers a task.
|
|---|
| 38 | *
|
|---|
| 39 | * @returns VBox status code.
|
|---|
| 40 | * @retval VINF_ALREADY_POSTED is the task is already pending.
|
|---|
| 41 | *
|
|---|
| 42 | * @param pVM The cross context VM structure.
|
|---|
| 43 | * @param enmType The task owner type.
|
|---|
| 44 | * @param pvOwner The task owner.
|
|---|
| 45 | * @param hTask The task to trigger.
|
|---|
| 46 | * @thread Any
|
|---|
| 47 | */
|
|---|
| 48 | VMM_INT_DECL(int) PDMTaskTrigger(PVMCC pVM, PDMTASKTYPE enmType, RTR3PTR pvOwner, PDMTASKHANDLE hTask)
|
|---|
| 49 | {
|
|---|
| 50 | /*
|
|---|
| 51 | * Validate input and translate the handle to a task.
|
|---|
| 52 | */
|
|---|
| 53 | AssertReturn(pvOwner, VERR_NOT_OWNER);
|
|---|
| 54 | AssertReturn(enmType >= PDMTASKTYPE_DEV && enmType <= PDMTASKTYPE_INTERNAL, VERR_NOT_OWNER);
|
|---|
| 55 |
|
|---|
| 56 | size_t const iTask = hTask % RT_ELEMENTS(pVM->pdm.s.aTaskSets[0].aTasks);
|
|---|
| 57 | size_t const iTaskSet = hTask / RT_ELEMENTS(pVM->pdm.s.aTaskSets[0].aTasks);
|
|---|
| 58 | #ifdef IN_RING3
|
|---|
| 59 | AssertReturn(iTaskSet < RT_ELEMENTS(pVM->pdm.s.apTaskSets), VERR_INVALID_HANDLE);
|
|---|
| 60 | PPDMTASKSET pTaskSet = pVM->pdm.s.apTaskSets[iTaskSet];
|
|---|
| 61 | AssertReturn(pTaskSet, VERR_INVALID_HANDLE);
|
|---|
| 62 | #else
|
|---|
| 63 | AssertReturn(iTaskSet < RT_ELEMENTS(pVM->pdm.s.aTaskSets),
|
|---|
| 64 | iTaskSet < RT_ELEMENTS(pVM->pdm.s.apTaskSets) ? VERR_INVALID_CONTEXT : VERR_INVALID_HANDLE);
|
|---|
| 65 | PPDMTASKSET pTaskSet = &pVM->pdm.s.aTaskSets[iTaskSet];
|
|---|
| 66 | #endif
|
|---|
| 67 | AssertReturn(pTaskSet->u32Magic == PDMTASKSET_MAGIC, VERR_INVALID_MAGIC);
|
|---|
| 68 | PPDMTASK pTask = &pTaskSet->aTasks[iTask];
|
|---|
| 69 |
|
|---|
| 70 | /*
|
|---|
| 71 | * Check task ownership.
|
|---|
| 72 | */
|
|---|
| 73 | AssertReturn(pvOwner == pTask->pvOwner, VERR_NOT_OWNER);
|
|---|
| 74 | AssertReturn(enmType == pTask->enmType, VERR_NOT_OWNER);
|
|---|
| 75 |
|
|---|
| 76 | /*
|
|---|
| 77 | * Trigger the task, wake up the thread if the task isn't triggered yet.
|
|---|
| 78 | */
|
|---|
| 79 | if (!ASMAtomicBitTestAndSet(&pTaskSet->fTriggered, (uint32_t)iTask))
|
|---|
| 80 | {
|
|---|
| 81 | Log(("PDMTaskTrigger: Triggered %RU64 (%s)\n", hTask, R3STRING(pTask->pszName)));
|
|---|
| 82 | #ifdef IN_RING3
|
|---|
| 83 | if (pTaskSet->hEventR3 != NIL_RTSEMEVENT)
|
|---|
| 84 | {
|
|---|
| 85 | int rc = RTSemEventSignal(pTaskSet->hEventR3);
|
|---|
| 86 | AssertLogRelRCReturn(rc, rc);
|
|---|
| 87 | }
|
|---|
| 88 | else
|
|---|
| 89 | #endif
|
|---|
| 90 | {
|
|---|
| 91 | int rc = SUPSemEventSignal(pVM->pSession, pTaskSet->hEventR0);
|
|---|
| 92 | AssertLogRelRCReturn(rc, rc);
|
|---|
| 93 | }
|
|---|
| 94 | return VINF_SUCCESS;
|
|---|
| 95 | }
|
|---|
| 96 | ASMAtomicIncU32(&pTask->cAlreadyTrigged);
|
|---|
| 97 | Log(("PDMTaskTrigger: %RU64 (%s) was already triggered\n", hTask, R3STRING(pTask->pszName)));
|
|---|
| 98 | return VINF_ALREADY_POSTED;
|
|---|
| 99 | }
|
|---|
| 100 |
|
|---|
| 101 |
|
|---|
| 102 | /**
|
|---|
| 103 | * Triggers an internal task.
|
|---|
| 104 | *
|
|---|
| 105 | * @returns VBox status code.
|
|---|
| 106 | * @param pVM The cross context VM structure.
|
|---|
| 107 | * @param hTask The task to trigger.
|
|---|
| 108 | * @thread Any
|
|---|
| 109 | */
|
|---|
| 110 | VMM_INT_DECL(int) PDMTaskTriggerInternal(PVMCC pVM, PDMTASKHANDLE hTask)
|
|---|
| 111 | {
|
|---|
| 112 | return PDMTaskTrigger(pVM, PDMTASKTYPE_INTERNAL, pVM->pVMR3, hTask);
|
|---|
| 113 | }
|
|---|
| 114 |
|
|---|
