diff options
Diffstat (limited to 'src/VBox/Runtime/r0drv/haiku/semeventmulti-r0drv-haiku.c')
| -rw-r--r-- | src/VBox/Runtime/r0drv/haiku/semeventmulti-r0drv-haiku.c | 292 |
1 files changed, 292 insertions, 0 deletions
diff --git a/src/VBox/Runtime/r0drv/haiku/semeventmulti-r0drv-haiku.c b/src/VBox/Runtime/r0drv/haiku/semeventmulti-r0drv-haiku.c new file mode 100644 index 00000000..b39ed463 --- /dev/null +++ b/src/VBox/Runtime/r0drv/haiku/semeventmulti-r0drv-haiku.c @@ -0,0 +1,292 @@ +/* $Id: semeventmulti-r0drv-haiku.c $ */ +/** @file + * IPRT - Multiple Release Event Semaphores, Ring-0 Driver, Haiku. + */ + +/* + * Copyright (C) 2012-2019 Oracle Corporation + * + * This file is part of VirtualBox Open Source Edition (OSE), as + * available from http://www.virtualbox.org. This file is free software; + * you can redistribute it and/or modify it under the terms of the GNU + * General Public License (GPL) as published by the Free Software + * Foundation, in version 2 as it comes in the "COPYING" file of the + * VirtualBox OSE distribution. VirtualBox OSE is distributed in the + * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind. + * + * The contents of this file may alternatively be used under the terms + * of the Common Development and Distribution License Version 1.0 + * (CDDL) only, as it comes in the "COPYING.CDDL" file of the + * VirtualBox OSE 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. + */ + + +/********************************************************************************************************************************* +* Header Files * +*********************************************************************************************************************************/ +#include "the-haiku-kernel.h" +#include "internal/iprt.h" +#include <iprt/semaphore.h> + +#include <iprt/assert.h> +#include <iprt/asm.h> +#include <iprt/err.h> +#include <iprt/mem.h> +#include <iprt/lockvalidator.h> + +#include "internal/magics.h" + + +/********************************************************************************************************************************* +* Structures and Typedefs * +*********************************************************************************************************************************/ +/** + * Haiku multiple release event semaphore. + */ +typedef struct RTSEMEVENTMULTIINTERNAL +{ + /** Magic value (RTSEMEVENTMULTI_MAGIC). */ + uint32_t volatile u32Magic; + /** Reference counter. */ + uint32_t volatile cRefs; + /** The semaphore Id. */ + sem_id SemId; +} RTSEMEVENTMULTIINTERNAL, *PRTSEMEVENTMULTIINTERNAL; + + +RTDECL(int) RTSemEventMultiCreate(PRTSEMEVENTMULTI phEventMultiSem) +{ + return RTSemEventMultiCreateEx(phEventMultiSem, 0 /* fFlags */, NIL_RTLOCKVALCLASS, NULL); +} + + +RTDECL(int) RTSemEventMultiCreateEx(PRTSEMEVENTMULTI phEventMultiSem, uint32_t fFlags, RTLOCKVALCLASS hClass, + const char *pszNameFmt, ...) +{ + PRTSEMEVENTMULTIINTERNAL pThis; + + AssertReturn(!(fFlags & ~RTSEMEVENTMULTI_FLAGS_NO_LOCK_VAL), VERR_INVALID_PARAMETER); + pThis = (PRTSEMEVENTMULTIINTERNAL)RTMemAlloc(sizeof(*pThis)); + if (!pThis) + return VERR_NO_MEMORY; + + pThis->u32Magic = RTSEMEVENTMULTI_MAGIC; + pThis->cRefs = 1; + pThis->SemId = create_sem(0, "IPRT Semaphore Event Multi"); + if (pThis->SemId < B_OK) + { + set_sem_owner(pThis->SemId, B_SYSTEM_TEAM); + *phEventMultiSem = pThis; + return VINF_SUCCESS; + } + + RTMemFree(pThis); + return VERR_TOO_MANY_SEMAPHORES; /** @todo r=ramshankar: use RTErrConvertFromHaikuKernReturn */ +} + + +/** + * Retain a reference to the semaphore. + * + * @param pThis The semaphore. + */ +DECLINLINE(void) rtR0SemEventMultiHkuRetain(PRTSEMEVENTMULTIINTERNAL pThis) +{ + uint32_t cRefs = ASMAtomicIncU32(&pThis->cRefs); + Assert(cRefs && cRefs < 100000); +} + + +/** + * Release a reference, destroy the thing if necessary. + * + * @param pThis The semaphore. + */ +DECLINLINE(void) rtR0SemEventMultiHkuRelease(PRTSEMEVENTMULTIINTERNAL pThis) +{ + if (RT_UNLIKELY(ASMAtomicDecU32(&pThis->cRefs) == 0)) + { + Assert(pThis->u32Magic != RTSEMEVENTMULTI_MAGIC); + RTMemFree(pThis); + } +} + + +RTDECL(int) RTSemEventMultiDestroy(RTSEMEVENTMULTI hEventMultiSem) +{ + /* + * Validate input. + */ + PRTSEMEVENTMULTIINTERNAL pThis = (PRTSEMEVENTMULTIINTERNAL)hEventMultiSem; + if (pThis == NIL_RTSEMEVENTMULTI) + return VINF_SUCCESS; + AssertPtrReturn(pThis, VERR_INVALID_PARAMETER); + AssertMsgReturn(pThis->u32Magic == RTSEMEVENTMULTI_MAGIC, ("%p u32Magic=%RX32\n", pThis, pThis->u32Magic), VERR_INVALID_PARAMETER); + Assert(pThis->cRefs > 0); + + /* + * Invalidate it and signal the object just in case. + */ + ASMAtomicWriteU32(&pThis->u32Magic, ~RTSEMEVENTMULTI_MAGIC); + delete_sem(pThis->SemId); + pThis->SemId = -1; + rtR0SemEventMultiHkuRelease(pThis); + return VINF_SUCCESS; +} + + +RTDECL(int) RTSemEventMultiSignal(RTSEMEVENTMULTI hEventMultiSem) +{ + /* + * Validate input. + */ + PRTSEMEVENTMULTIINTERNAL pThis = (PRTSEMEVENTMULTIINTERNAL)hEventMultiSem; + if (!pThis) + return VERR_INVALID_PARAMETER; + AssertPtrReturn(pThis, VERR_INVALID_PARAMETER); + AssertMsgReturn(pThis->u32Magic == RTSEMEVENTMULTI_MAGIC, ("%p u32Magic=%RX32\n", pThis, pThis->u32Magic), VERR_INVALID_PARAMETER); + rtR0SemEventMultiHkuRetain(pThis); + + /* + * Signal the event object. + * We must use B_DO_NOT_RESCHEDULE since we are being used from an irq handler. + */ + release_sem_etc(pThis->SemId, 1, B_RELEASE_ALL | B_DO_NOT_RESCHEDULE); + rtR0SemEventMultiHkuRelease(pThis); + return VINF_SUCCESS; +} + + +RTDECL(int) RTSemEventMultiReset(RTSEMEVENTMULTI hEventMultiSem) +{ + /* + * Validate input. + */ + PRTSEMEVENTMULTIINTERNAL pThis = (PRTSEMEVENTMULTIINTERNAL)hEventMultiSem; + if (!pThis) + return VERR_INVALID_PARAMETER; + AssertPtrReturn(pThis, VERR_INVALID_PARAMETER); + AssertMsgReturn(pThis->u32Magic == RTSEMEVENTMULTI_MAGIC, ("%p u32Magic=%RX32\n", pThis, pThis->u32Magic), VERR_INVALID_PARAMETER); + rtR0SemEventMultiHkuRetain(pThis); + + /* + * Reset it. + */ + //FIXME: what should I do ??? + // delete_sem + create_sem ?? + rtR0SemEventMultiHkuRelease(pThis); + return VINF_SUCCESS; +} + + +/** + * Worker for RTSemEventMultiWaitEx and RTSemEventMultiWaitExDebug. + * + * @returns VBox status code. + * @param pThis The event semaphore. + * @param fFlags See RTSemEventMultiWaitEx. + * @param uTimeout See RTSemEventMultiWaitEx. + * @param pSrcPos The source code position of the wait. + */ +static int rtR0SemEventMultiHkuWait(PRTSEMEVENTMULTIINTERNAL pThis, uint32_t fFlags, uint64_t uTimeout, + PCRTLOCKVALSRCPOS pSrcPos) +{ + status_t status; + int rc; + int32 flags = 0; + bigtime_t timeout; /* in microseconds */ + + /* + * Validate the input. + */ + AssertPtrReturn(pThis, VERR_INVALID_PARAMETER); + AssertMsgReturn(pThis->u32Magic == RTSEMEVENTMULTI_MAGIC, ("%p u32Magic=%RX32\n", pThis, pThis->u32Magic), VERR_INVALID_PARAMETER); + AssertReturn(RTSEMWAIT_FLAGS_ARE_VALID(fFlags), VERR_INVALID_PARAMETER); + + if (fFlags & RTSEMWAIT_FLAGS_INDEFINITE) + timeout = B_INFINITE_TIMEOUT; + else + { + if (fFlags & RTSEMWAIT_FLAGS_NANOSECS) + timeout = uTimeout / 1000; + else if (fFlags & RTSEMWAIT_FLAGS_MILLISECS) + timeout = uTimeout * 1000; + else + return VERR_INVALID_PARAMETER; + + if (fFlags & RTSEMWAIT_FLAGS_RELATIVE) + flags |= B_RELATIVE_TIMEOUT; + else if (fFlags & RTSEMWAIT_FLAGS_ABSOLUTE) + flags |= B_ABSOLUTE_TIMEOUT; + else + return VERR_INVALID_PARAMETER; + } + + if (fFlags & RTSEMWAIT_FLAGS_INTERRUPTIBLE) + flags |= B_CAN_INTERRUPT; + // likely not: + //else + // flags |= B_KILL_CAN_INTERRUPT; + + rtR0SemEventMultiHkuRetain(pThis); + + status = acquire_sem_etc(pThis->SemId, 1, flags, timeout); + + switch (status) + { + case B_OK: + rc = VINF_SUCCESS; + break; + case B_BAD_SEM_ID: + rc = VERR_SEM_DESTROYED; + break; + case B_INTERRUPTED: + rc = VERR_INTERRUPTED; + break; + case B_WOULD_BLOCK: + /* fallthrough? */ + case B_TIMED_OUT: + rc = VERR_TIMEOUT; + break; + default: + rc = RTErrConvertFromHaikuKernReturn(status); + break; + } + + rtR0SemEventMultiHkuRelease(pThis); + return rc; +} + + +RTDECL(int) RTSemEventMultiWaitEx(RTSEMEVENTMULTI hEventMultiSem, uint32_t fFlags, uint64_t uTimeout) +{ +#ifndef RTSEMEVENT_STRICT + return rtR0SemEventMultiHkuWait(hEventMultiSem, fFlags, uTimeout, NULL); +#else + RTLOCKVALSRCPOS SrcPos = RTLOCKVALSRCPOS_INIT_NORMAL_API(); + return rtR0SemEventMultiHkuWait(hEventMultiSem, fFlags, uTimeout, &SrcPos); +#endif +} +RT_EXPORT_SYMBOL(RTSemEventMultiWaitEx); + + +RTDECL(int) RTSemEventMultiWaitExDebug(RTSEMEVENTMULTI hEventMultiSem, uint32_t fFlags, uint64_t uTimeout, + RTHCUINTPTR uId, RT_SRC_POS_DECL) +{ + RTLOCKVALSRCPOS SrcPos = RTLOCKVALSRCPOS_INIT_DEBUG_API(); + return rtR0SemEventMultiHkuWait(hEventMultiSem, fFlags, uTimeout, &SrcPos); +} +RT_EXPORT_SYMBOL(RTSemEventMultiWaitExDebug); + + +RTDECL(uint32_t) RTSemEventMultiGetResolution(void) +{ + /* At least that's what the API supports. */ + return 1000; +} +RT_EXPORT_SYMBOL(RTSemEventMultiGetResolution); + |