| 1 | /* $Id: TMInline.h 89789 2021-06-19 14:13:50Z vboxsync $ */
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| 2 | /** @file
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| 3 | * TM - Common Inlined functions.
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| 4 | */
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| 5 |
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| 6 | /*
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| 7 | * Copyright (C) 2006-2020 Oracle Corporation
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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 |
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| 18 | #ifndef VMM_INCLUDED_SRC_include_TMInline_h
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| 19 | #define VMM_INCLUDED_SRC_include_TMInline_h
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| 20 | #ifndef RT_WITHOUT_PRAGMA_ONCE
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| 21 | # pragma once
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| 22 | #endif
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| 23 |
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| 24 |
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| 25 | DECLINLINE(PTMTIMER) tmTimerQueueGetHead(PTMTIMERQUEUECC pQueueCC, PTMTIMERQUEUE pQueueShared)
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| 26 | {
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| 27 | #ifdef IN_RING3
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| 28 | RT_NOREF(pQueueShared);
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| 29 | uint32_t const idx = pQueueCC->idxActive;
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| 30 | #else
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| 31 | uint32_t const idx = pQueueShared->idxActive;
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| 32 | #endif
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| 33 | if (idx < pQueueCC->cTimersAlloc)
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| 34 | return &pQueueCC->paTimers[idx];
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| 35 | return NULL;
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| 36 | }
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| 37 |
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| 38 |
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| 39 | DECLINLINE(void) tmTimerQueueSetHead(PTMTIMERQUEUECC pQueueCC, PTMTIMERQUEUE pQueueShared, PTMTIMER pHead)
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| 40 | {
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| 41 | uint32_t idx;
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| 42 | if (pHead)
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| 43 | {
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| 44 | idx = (uint32_t)(pHead - &pQueueCC->paTimers[0]);
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| 45 | AssertMsgStmt(idx < pQueueCC->cTimersAlloc,
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| 46 | ("idx=%u (%s) cTimersAlloc=%u\n", idx, pHead->szName, pQueueCC->cTimersAlloc),
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| 47 | idx = UINT32_MAX);
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| 48 | }
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| 49 | else
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| 50 | idx = UINT32_MAX;
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| 51 | #ifndef IN_RING3
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| 52 | pQueueShared->idxActive = idx;
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| 53 | #else
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| 54 | pQueueCC->idxActive = idx;
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| 55 | RT_NOREF(pQueueShared);
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| 56 | #endif
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| 57 | }
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| 58 |
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| 59 |
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| 60 | /**
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| 61 | * Get the previous timer - translates TMTIMER::idxPrev.
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| 62 | */
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| 63 | DECLINLINE(PTMTIMER) tmTimerGetPrev(PTMTIMERQUEUECC pQueueCC, PTMTIMER pTimer)
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| 64 | {
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| 65 | uint32_t const idxPrev = pTimer->idxPrev;
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| 66 | Assert(idxPrev);
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| 67 | if (idxPrev < pQueueCC->cTimersAlloc)
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| 68 | return &pQueueCC->paTimers[idxPrev];
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| 69 | Assert(idxPrev == UINT32_MAX);
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| 70 | return NULL;
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| 71 | }
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| 72 |
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| 73 |
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| 74 | /**
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| 75 | * Get the next timer - translates TMTIMER::idxNext.
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| 76 | */
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| 77 | DECLINLINE(PTMTIMER) tmTimerGetNext(PTMTIMERQUEUECC pQueueCC, PTMTIMER pTimer)
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| 78 | {
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| 79 | uint32_t const idxNext = pTimer->idxNext;
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| 80 | Assert(idxNext);
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| 81 | if (idxNext < pQueueCC->cTimersAlloc)
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| 82 | return &pQueueCC->paTimers[idxNext];
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| 83 | Assert(idxNext == UINT32_MAX);
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| 84 | return NULL;
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| 85 | }
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| 86 |
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| 87 |
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| 88 | /**
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| 89 | * Set the previous timer link (TMTIMER::idxPrev).
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| 90 | */
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| 91 | DECLINLINE(void) tmTimerSetPrev(PTMTIMERQUEUECC pQueueCC, PTMTIMER pTimer, PTMTIMER pPrev)
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| 92 | {
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| 93 | uint32_t idxPrev;
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| 94 | if (pPrev)
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| 95 | {
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| 96 | idxPrev = (uint32_t)(pPrev - &pQueueCC->paTimers[0]);
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| 97 | Assert(idxPrev);
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| 98 | AssertMsgStmt(idxPrev < pQueueCC->cTimersAlloc,
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| 99 | ("idxPrev=%u (%s) cTimersAlloc=%u\n", idxPrev, pPrev->szName, pQueueCC->cTimersAlloc),
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| 100 | idxPrev = UINT32_MAX);
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| 101 | }
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| 102 | else
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| 103 | idxPrev = UINT32_MAX;
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| 104 | pTimer->idxPrev = idxPrev;
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| 105 | }
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| 106 |
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| 107 |
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| 108 | /**
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| 109 | * Set the next timer link (TMTIMER::idxNext).
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| 110 | */
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| 111 | DECLINLINE(void) tmTimerSetNext(PTMTIMERQUEUECC pQueueCC, PTMTIMER pTimer, PTMTIMER pNext)
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| 112 | {
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| 113 | uint32_t idxNext;
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| 114 | if (pNext)
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| 115 | {
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| 116 | idxNext = (uint32_t)(pNext - &pQueueCC->paTimers[0]);
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| 117 | Assert(idxNext);
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| 118 | AssertMsgStmt(idxNext < pQueueCC->cTimersAlloc,
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| 119 | ("idxNext=%u (%s) cTimersAlloc=%u\n", idxNext, pNext->szName, pQueueCC->cTimersAlloc),
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| 120 | idxNext = UINT32_MAX);
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| 121 | }
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| 122 | else
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| 123 | idxNext = UINT32_MAX;
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| 124 | pTimer->idxNext = idxNext;
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| 125 | }
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| 126 |
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| 127 |
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| 128 | /**
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| 129 | * Used to unlink a timer from the active list.
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| 130 | *
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| 131 | * @param pVM The cross context VM structure.
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| 132 | * @param pQueueCC The context specific queue data (same as @a pQueue for
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| 133 | * ring-3).
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| 134 | * @param pQueue The shared timer queue data.
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| 135 | * @param pTimer The timer that needs linking.
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| 136 | *
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| 137 | * @remarks Called while owning the relevant queue lock.
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| 138 | */
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| 139 | DECL_FORCE_INLINE(void) tmTimerQueueUnlinkActive(PVMCC pVM, PTMTIMERQUEUECC pQueueCC, PTMTIMERQUEUE pQueue, PTMTIMER pTimer)
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| 140 | {
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| 141 | #ifdef VBOX_STRICT
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| 142 | TMTIMERSTATE const enmState = pTimer->enmState;
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| 143 | Assert( pQueue->enmClock == TMCLOCK_VIRTUAL_SYNC
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| 144 | ? enmState == TMTIMERSTATE_ACTIVE
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| 145 | : enmState == TMTIMERSTATE_PENDING_SCHEDULE || enmState == TMTIMERSTATE_PENDING_STOP_SCHEDULE);
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| 146 | #endif
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| 147 | RT_NOREF(pVM);
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| 148 |
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| 149 | const PTMTIMER pPrev = tmTimerGetPrev(pQueueCC, pTimer);
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| 150 | const PTMTIMER pNext = tmTimerGetNext(pQueueCC, pTimer);
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| 151 | if (pPrev)
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| 152 | tmTimerSetNext(pQueueCC, pPrev, pNext);
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| 153 | else
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| 154 | {
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| 155 | tmTimerQueueSetHead(pQueueCC, pQueue, pNext);
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| 156 | pQueue->u64Expire = pNext ? pNext->u64Expire : INT64_MAX;
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| 157 | DBGFTRACE_U64_TAG(pVM, pQueue->u64Expire, "tmTimerQueueUnlinkActive");
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| 158 | }
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| 159 | if (pNext)
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| 160 | tmTimerSetPrev(pQueueCC, pNext, pPrev);
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| 161 | pTimer->idxNext = UINT32_MAX;
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| 162 | pTimer->idxPrev = UINT32_MAX;
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| 163 | }
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| 164 |
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| 165 | /** @def TMTIMER_HANDLE_TO_VARS_RETURN_EX
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| 166 | * Converts a timer handle to a timer pointer, returning @a a_rcRet if the
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| 167 | * handle is invalid.
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| 168 | *
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| 169 | * This defines the following variables:
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| 170 | * - idxQueue: The queue index.
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| 171 | * - pQueueCC: Pointer to the context specific queue data.
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| 172 | * - pTimer: The timer pointer.
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| 173 | * - idxTimer: The timer index.
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| 174 | *
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| 175 | * @param a_pVM The cross context VM structure.
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| 176 | * @param a_hTimer The timer handle to translate.
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| 177 | * @param a_rcRet What to return on failure.
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| 178 | *
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| 179 | * @note This macro has no scoping, so careful when using it around
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| 180 | * conditional statements!
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| 181 | */
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| 182 | #ifdef IN_RING3
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| 183 | # define TMTIMER_HANDLE_TO_VARS_RETURN_EX(a_pVM, a_hTimer, a_rcRet) \
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| 184 | uintptr_t const idxQueue = (uintptr_t)((a_hTimer) >> TMTIMERHANDLE_QUEUE_IDX_SHIFT) \
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| 185 | & (uintptr_t)TMTIMERHANDLE_QUEUE_IDX_SMASK; \
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| 186 | AssertReturn(idxQueue < RT_ELEMENTS((a_pVM)->tm.s.aTimerQueues), a_rcRet); \
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| 187 | PTMTIMERQUEUE const pQueue = &(a_pVM)->tm.s.aTimerQueues[idxQueue]; \
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| 188 | PTMTIMERQUEUE const pQueueCC = pQueue; RT_NOREF(pQueueCC); \
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| 189 | \
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| 190 | uintptr_t const idxTimer = (uintptr_t)((a_hTimer) & TMTIMERHANDLE_TIMER_IDX_MASK); \
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| 191 | AssertReturn(idxQueue < pQueue->cTimersAlloc, a_rcRet); \
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| 192 | \
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| 193 | PTMTIMER const pTimer = &pQueue->paTimers[idxTimer]; \
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| 194 | AssertReturn(pTimer->hSelf == a_hTimer, a_rcRet)
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| 195 | #else
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| 196 | # define TMTIMER_HANDLE_TO_VARS_RETURN_EX(a_pVM, a_hTimer, a_rcRet) \
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| 197 | uintptr_t const idxQueue = (uintptr_t)((a_hTimer) >> TMTIMERHANDLE_QUEUE_IDX_SHIFT) \
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| 198 | & (uintptr_t)TMTIMERHANDLE_QUEUE_IDX_SMASK; \
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| 199 | AssertReturn(idxQueue < RT_ELEMENTS((a_pVM)->tm.s.aTimerQueues), a_rcRet); \
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| 200 | AssertCompile(RT_ELEMENTS((a_pVM)->tm.s.aTimerQueues) == RT_ELEMENTS((a_pVM)->tmr0.s.aTimerQueues)); \
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| 201 | PTMTIMERQUEUE const pQueue = &(a_pVM)->tm.s.aTimerQueues[idxQueue]; RT_NOREF(pQueue); \
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| 202 | PTMTIMERQUEUER0 const pQueueCC = &(a_pVM)->tmr0.s.aTimerQueues[idxQueue]; \
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| 203 | \
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| 204 | uintptr_t const idxTimer = (uintptr_t)((a_hTimer) & TMTIMERHANDLE_TIMER_IDX_MASK); \
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| 205 | AssertReturn(idxQueue < pQueueCC->cTimersAlloc, a_rcRet); \
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| 206 | \
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| 207 | PTMTIMER const pTimer = &pQueueCC->paTimers[idxTimer]; \
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| 208 | AssertReturn(pTimer->hSelf == a_hTimer, a_rcRet); \
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| 209 | Assert(pTimer->fFlags & TMTIMER_FLAGS_RING0); \
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| 210 | Assert(VM_IS_EMT(pVM))
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| 211 | #endif
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| 212 |
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| 213 | /** @def TMTIMER_HANDLE_TO_VARS_RETURN
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| 214 | * Converts a timer handle to a timer pointer, returning VERR_INVALID_HANDLE if
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| 215 | * the handle is invalid.
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| 216 | *
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| 217 | * This defines the following variables:
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| 218 | * - idxQueue: The queue index.
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| 219 | * - pQueueCC: Pointer to the context specific queue data.
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| 220 | * - pTimer: The timer pointer.
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| 221 | * - idxTimer: The timer index.
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| 222 | *
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| 223 | * @param a_pVM The cross context VM structure.
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| 224 | * @param a_hTimer The timer handle to translate.
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| 225 | *
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| 226 | * @note This macro has no scoping, so careful when using it around
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| 227 | * conditional statements!
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| 228 | */
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| 229 | #define TMTIMER_HANDLE_TO_VARS_RETURN(a_pVM, a_hTimer) TMTIMER_HANDLE_TO_VARS_RETURN_EX(a_pVM, a_hTimer, VERR_INVALID_HANDLE)
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| 230 |
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| 231 | /** @def TMTIMER_HANDLE_TO_VARS_RETURN_VOID
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| 232 | * Converts a timer handle to a timer pointer, returning void if the
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| 233 | * handle is invalid.
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| 234 | *
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| 235 | * This defines the following variables:
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| 236 | * - idxQueue: The queue index.
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| 237 | * - pQueueCC: Pointer to the context specific queue data.
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| 238 | * - pTimer: The timer pointer.
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| 239 | * - idxTimer: The timer index.
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| 240 | *
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| 241 | * @param a_pVM The cross context VM structure.
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| 242 | * @param a_hTimer The timer handle to translate.
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| 243 | *
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| 244 | * @note This macro has no scoping, so careful when using it around
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| 245 | * conditional statements!
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| 246 | */
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| 247 | #ifdef IN_RING3
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| 248 | # define TMTIMER_HANDLE_TO_VARS_RETURN_VOID(a_pVM, a_hTimer) \
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| 249 | uintptr_t const idxQueue = (uintptr_t)((a_hTimer) >> TMTIMERHANDLE_QUEUE_IDX_SHIFT) \
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| 250 | & (uintptr_t)TMTIMERHANDLE_QUEUE_IDX_SMASK; \
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| 251 | AssertReturnVoid(idxQueue < RT_ELEMENTS((a_pVM)->tm.s.aTimerQueues)); \
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| 252 | PTMTIMERQUEUE const pQueue = &(a_pVM)->tm.s.aTimerQueues[idxQueue]; \
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| 253 | PTMTIMERQUEUE const pQueueCC = pQueue; RT_NOREF(pQueueCC); \
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| 254 | \
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| 255 | uintptr_t const idxTimer = (uintptr_t)((a_hTimer) & TMTIMERHANDLE_TIMER_IDX_MASK); \
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| 256 | AssertReturnVoid(idxQueue < pQueue->cTimersAlloc); \
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| 257 | \
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| 258 | PTMTIMER const pTimer = &pQueue->paTimers[idxTimer]; \
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| 259 | AssertReturnVoid(pTimer->hSelf == a_hTimer)
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| 260 | #else
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| 261 | # define TMTIMER_HANDLE_TO_VARS_RETURN_VOID(a_pVM, a_hTimer) \
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| 262 | uintptr_t const idxQueue = (uintptr_t)((a_hTimer) >> TMTIMERHANDLE_QUEUE_IDX_SHIFT) \
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| 263 | & (uintptr_t)TMTIMERHANDLE_QUEUE_IDX_SMASK; \
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| 264 | AssertReturnVoid(idxQueue < RT_ELEMENTS((a_pVM)->tm.s.aTimerQueues)); \
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| 265 | AssertCompile(RT_ELEMENTS((a_pVM)->tm.s.aTimerQueues) == RT_ELEMENTS((a_pVM)->tmr0.s.aTimerQueues)); \
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| 266 | PTMTIMERQUEUE const pQueue = &(a_pVM)->tm.s.aTimerQueues[idxQueue]; RT_NOREF(pQueue); \
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| 267 | PTMTIMERQUEUER0 const pQueueCC = &(a_pVM)->tmr0.s.aTimerQueues[idxQueue]; \
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| 268 | \
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| 269 | uintptr_t const idxTimer = (uintptr_t)((a_hTimer) & TMTIMERHANDLE_TIMER_IDX_MASK); \
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| 270 | AssertReturnVoid(idxQueue < pQueueCC->cTimersAlloc); \
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| 271 | \
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| 272 | PTMTIMER const pTimer = &pQueueCC->paTimers[idxTimer]; \
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| 273 | AssertReturnVoid(pTimer->hSelf == a_hTimer); \
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| 274 | Assert(pTimer->fFlags & TMTIMER_FLAGS_RING0); \
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| 275 | Assert(VM_IS_EMT(pVM))
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| 276 | #endif
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| 277 |
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| 278 | #endif /* !VMM_INCLUDED_SRC_include_TMInline_h */
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| 279 |
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