From f215e02bf85f68d3a6106c2a1f4f7f063f819064 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Thu, 11 Apr 2024 10:17:27 +0200 Subject: Adding upstream version 7.0.14-dfsg. Signed-off-by: Daniel Baumann --- src/VBox/Runtime/r3/win/semevent-win.cpp | 315 +++++++++++++++++++++++++++++++ 1 file changed, 315 insertions(+) create mode 100644 src/VBox/Runtime/r3/win/semevent-win.cpp (limited to 'src/VBox/Runtime/r3/win/semevent-win.cpp') diff --git a/src/VBox/Runtime/r3/win/semevent-win.cpp b/src/VBox/Runtime/r3/win/semevent-win.cpp new file mode 100644 index 00000000..be086941 --- /dev/null +++ b/src/VBox/Runtime/r3/win/semevent-win.cpp @@ -0,0 +1,315 @@ +/* $Id: semevent-win.cpp $ */ +/** @file + * IPRT - Event Semaphore, Windows. + */ + +/* + * Copyright (C) 2006-2023 Oracle and/or its affiliates. + * + * This file is part of VirtualBox base platform packages, as + * available from https://www.virtualbox.org. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation, in version 3 of the + * License. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see . + * + * The contents of this file may alternatively be used under the terms + * of the Common Development and Distribution License Version 1.0 + * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included + * in the VirtualBox distribution, in which case the provisions of the + * CDDL are applicable instead of those of the GPL. + * + * You may elect to license modified versions of this file under the + * terms and conditions of either the GPL or the CDDL or both. + * + * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0 + */ + + +/********************************************************************************************************************************* +* Header Files * +*********************************************************************************************************************************/ +#define LOG_GROUP RTLOGGROUP_SEMAPHORE +#include + +#include +#include "internal/iprt.h" + +#include +#include +#include +#include +#include +#include +#include "internal/magics.h" +#include "internal/mem.h" +#include "internal/strict.h" + + +/********************************************************************************************************************************* +* Defined Constants And Macros * +*********************************************************************************************************************************/ +struct RTSEMEVENTINTERNAL +{ + /** Magic value (RTSEMEVENT_MAGIC). */ + uint32_t u32Magic; + /** The event handle. */ + HANDLE hev; +#ifdef RTSEMEVENT_STRICT + /** Signallers. */ + RTLOCKVALRECSHRD Signallers; + /** Indicates that lock validation should be performed. */ + bool volatile fEverHadSignallers; +#endif + /** The creation flags. */ + uint32_t fFlags; +}; + + + +RTDECL(int) RTSemEventCreate(PRTSEMEVENT phEventSem) +{ + return RTSemEventCreateEx(phEventSem, 0 /*fFlags*/, NIL_RTLOCKVALCLASS, NULL); +} + + +RTDECL(int) RTSemEventCreateEx(PRTSEMEVENT phEventSem, uint32_t fFlags, RTLOCKVALCLASS hClass, const char *pszNameFmt, ...) +{ + AssertReturn(!(fFlags & ~(RTSEMEVENT_FLAGS_NO_LOCK_VAL | RTSEMEVENT_FLAGS_BOOTSTRAP_HACK)), VERR_INVALID_PARAMETER); + Assert(!(fFlags & RTSEMEVENT_FLAGS_BOOTSTRAP_HACK) || (fFlags & RTSEMEVENT_FLAGS_NO_LOCK_VAL)); + + struct RTSEMEVENTINTERNAL *pThis; + if (!(fFlags & RTSEMEVENT_FLAGS_BOOTSTRAP_HACK)) + pThis = (struct RTSEMEVENTINTERNAL *)RTMemAlloc(sizeof(*pThis)); + else + pThis = (struct RTSEMEVENTINTERNAL *)rtMemBaseAlloc(sizeof(*pThis)); + if (!pThis) + return VERR_NO_MEMORY; + + /* + * Create the semaphore. + * (Auto reset, not signaled, private event object.) + */ + pThis->hev = CreateEvent(NULL, FALSE, FALSE, NULL); + if (pThis->hev != NULL) /* not INVALID_HANDLE_VALUE */ + { + pThis->u32Magic = RTSEMEVENT_MAGIC; + pThis->fFlags = fFlags; +#ifdef RTSEMEVENT_STRICT + if (!pszNameFmt) + { + static uint32_t volatile s_iSemEventAnon = 0; + RTLockValidatorRecSharedInit(&pThis->Signallers, hClass, RTLOCKVAL_SUB_CLASS_ANY, pThis, + true /*fSignaller*/, !(fFlags & RTSEMEVENT_FLAGS_NO_LOCK_VAL), + "RTSemEvent-%u", ASMAtomicIncU32(&s_iSemEventAnon) - 1); + } + else + { + va_list va; + va_start(va, pszNameFmt); + RTLockValidatorRecSharedInitV(&pThis->Signallers, hClass, RTLOCKVAL_SUB_CLASS_ANY, pThis, + true /*fSignaller*/, !(fFlags & RTSEMEVENT_FLAGS_NO_LOCK_VAL), + pszNameFmt, va); + va_end(va); + } + pThis->fEverHadSignallers = false; +#else + RT_NOREF_PV(hClass); RT_NOREF_PV(pszNameFmt); +#endif + + *phEventSem = pThis; + return VINF_SUCCESS; + } + + DWORD dwErr = GetLastError(); + if (!(fFlags & RTSEMEVENT_FLAGS_BOOTSTRAP_HACK)) + RTMemFree(pThis); + else + rtMemBaseFree(pThis); + return RTErrConvertFromWin32(dwErr); +} + + +RTDECL(int) RTSemEventDestroy(RTSEMEVENT hEventSem) +{ + struct RTSEMEVENTINTERNAL *pThis = hEventSem; + if (pThis == NIL_RTSEMEVENT) + return VINF_SUCCESS; + AssertPtrReturn(pThis, VERR_INVALID_HANDLE); + AssertReturn(pThis->u32Magic == RTSEMEVENT_MAGIC, VERR_INVALID_HANDLE); + + /* + * Invalidate the handle and close the semaphore. + */ + int rc = VINF_SUCCESS; + AssertReturn(ASMAtomicCmpXchgU32(&pThis->u32Magic, ~RTSEMEVENT_MAGIC, RTSEMEVENT_MAGIC), VERR_INVALID_HANDLE); + if (CloseHandle(pThis->hev)) + { +#ifdef RTSEMEVENT_STRICT + RTLockValidatorRecSharedDelete(&pThis->Signallers); +#endif + if (!(pThis->fFlags & RTSEMEVENT_FLAGS_BOOTSTRAP_HACK)) + RTMemFree(pThis); + else + rtMemBaseFree(pThis); + } + else + { + DWORD dwErr = GetLastError(); + rc = RTErrConvertFromWin32(dwErr); + AssertMsgFailed(("Destroy hEventSem %p failed, lasterr=%u (%Rrc)\n", pThis, dwErr, rc)); + /* Leak it. */ + } + + return rc; +} + + +RTDECL(int) RTSemEventSignal(RTSEMEVENT hEventSem) +{ + /* + * Validate input. + */ + struct RTSEMEVENTINTERNAL *pThis = hEventSem; + AssertPtrReturn(pThis, VERR_INVALID_HANDLE); + AssertReturn(pThis->u32Magic == RTSEMEVENT_MAGIC, VERR_INVALID_HANDLE); + +#ifdef RTSEMEVENT_STRICT + if (pThis->fEverHadSignallers) + { + int rc9 = RTLockValidatorRecSharedCheckSignaller(&pThis->Signallers, NIL_RTTHREAD); + if (RT_FAILURE(rc9)) + return rc9; + } +#endif + + /* + * Signal the object. + */ + if (SetEvent(pThis->hev)) + return VINF_SUCCESS; + DWORD dwErr = GetLastError(); + AssertMsgFailed(("Signaling hEventSem %p failed, lasterr=%d\n", pThis, dwErr)); + return RTErrConvertFromWin32(dwErr); +} + + +/** Goto avoidance. */ +DECL_FORCE_INLINE(int) rtSemEventWaitHandleStatus(struct RTSEMEVENTINTERNAL *pThis, DWORD rc) +{ + switch (rc) + { + case WAIT_OBJECT_0: return VINF_SUCCESS; + case WAIT_TIMEOUT: return VERR_TIMEOUT; + case WAIT_IO_COMPLETION: return VERR_INTERRUPTED; + case WAIT_ABANDONED: return VERR_SEM_OWNER_DIED; + default: + AssertMsgFailed(("%u\n", rc)); + case WAIT_FAILED: + { + int rc2 = RTErrConvertFromWin32(GetLastError()); + AssertMsgFailed(("Wait on hEventSem %p failed, rc=%d lasterr=%d\n", pThis, rc, GetLastError())); + if (rc2) + return rc2; + + AssertMsgFailed(("WaitForSingleObject(event) -> rc=%d while converted lasterr=%d\n", rc, rc2)); + RT_NOREF_PV(pThis); + return VERR_INTERNAL_ERROR; + } + } +} + + +#undef RTSemEventWaitNoResume +RTDECL(int) RTSemEventWaitNoResume(RTSEMEVENT hEventSem, RTMSINTERVAL cMillies) +{ + /* + * Validate input. + */ + struct RTSEMEVENTINTERNAL *pThis = hEventSem; + AssertPtrReturn(pThis, VERR_INVALID_HANDLE); + AssertReturn(pThis->u32Magic == RTSEMEVENT_MAGIC, VERR_INVALID_HANDLE); + + /* + * Wait for condition. + */ +#ifdef RTSEMEVENT_STRICT + RTTHREAD hThreadSelf = !(pThis->fFlags & RTSEMEVENT_FLAGS_BOOTSTRAP_HACK) + ? RTThreadSelfAutoAdopt() + : RTThreadSelf(); + if (pThis->fEverHadSignallers) + { + DWORD rc = WaitForSingleObjectEx(pThis->hev, + 0 /*Timeout*/, + TRUE /*fAlertable*/); + if (rc != WAIT_TIMEOUT || cMillies == 0) + return rtSemEventWaitHandleStatus(pThis, rc); + int rc9 = RTLockValidatorRecSharedCheckBlocking(&pThis->Signallers, hThreadSelf, NULL /*pSrcPos*/, false, + cMillies, RTTHREADSTATE_EVENT, true); + if (RT_FAILURE(rc9)) + return rc9; + } +#else + RTTHREAD hThreadSelf = RTThreadSelf(); +#endif + RTThreadBlocking(hThreadSelf, RTTHREADSTATE_EVENT, true); + DWORD rc = WaitForSingleObjectEx(pThis->hev, + cMillies == RT_INDEFINITE_WAIT ? INFINITE : cMillies, + TRUE /*fAlertable*/); + RTThreadUnblocked(hThreadSelf, RTTHREADSTATE_EVENT); + return rtSemEventWaitHandleStatus(pThis, rc); +} + + +RTDECL(void) RTSemEventSetSignaller(RTSEMEVENT hEventSem, RTTHREAD hThread) +{ +#ifdef RTSEMEVENT_STRICT + struct RTSEMEVENTINTERNAL *pThis = hEventSem; + AssertPtrReturnVoid(pThis); + AssertReturnVoid(pThis->u32Magic == RTSEMEVENT_MAGIC); + + ASMAtomicWriteBool(&pThis->fEverHadSignallers, true); + RTLockValidatorRecSharedResetOwner(&pThis->Signallers, hThread, NULL); +#else + RT_NOREF_PV(hEventSem); RT_NOREF_PV(hThread); +#endif +} + + +RTDECL(void) RTSemEventAddSignaller(RTSEMEVENT hEventSem, RTTHREAD hThread) +{ +#ifdef RTSEMEVENT_STRICT + struct RTSEMEVENTINTERNAL *pThis = hEventSem; + AssertPtrReturnVoid(pThis); + AssertReturnVoid(pThis->u32Magic == RTSEMEVENT_MAGIC); + + ASMAtomicWriteBool(&pThis->fEverHadSignallers, true); + RTLockValidatorRecSharedAddOwner(&pThis->Signallers, hThread, NULL); +#else + RT_NOREF_PV(hEventSem); RT_NOREF_PV(hThread); +#endif +} + + +RTDECL(void) RTSemEventRemoveSignaller(RTSEMEVENT hEventSem, RTTHREAD hThread) +{ +#ifdef RTSEMEVENT_STRICT + struct RTSEMEVENTINTERNAL *pThis = hEventSem; + AssertPtrReturnVoid(pThis); + AssertReturnVoid(pThis->u32Magic == RTSEMEVENT_MAGIC); + + RTLockValidatorRecSharedRemoveOwner(&pThis->Signallers, hThread); +#else + RT_NOREF_PV(hEventSem); RT_NOREF_PV(hThread); +#endif +} + -- cgit v1.2.3