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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-06 03:01:46 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-06 03:01:46 +0000 |
commit | f8fe689a81f906d1b91bb3220acde2a4ecb14c5b (patch) | |
tree | 26484e9d7e2c67806c2d1760196ff01aaa858e8c /src/VBox/Runtime/r0drv/netbsd/thread-r0drv-netbsd.c | |
parent | Initial commit. (diff) | |
download | virtualbox-upstream.tar.xz virtualbox-upstream.zip |
Adding upstream version 6.0.4-dfsg.upstream/6.0.4-dfsgupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/VBox/Runtime/r0drv/netbsd/thread-r0drv-netbsd.c')
-rw-r--r-- | src/VBox/Runtime/r0drv/netbsd/thread-r0drv-netbsd.c | 181 |
1 files changed, 181 insertions, 0 deletions
diff --git a/src/VBox/Runtime/r0drv/netbsd/thread-r0drv-netbsd.c b/src/VBox/Runtime/r0drv/netbsd/thread-r0drv-netbsd.c new file mode 100644 index 00000000..17f07e8a --- /dev/null +++ b/src/VBox/Runtime/r0drv/netbsd/thread-r0drv-netbsd.c @@ -0,0 +1,181 @@ +/* $Id: thread-r0drv-netbsd.c $ */ +/** @file + * IPRT - Threads (Part 1), Ring-0 Driver, NetBSD. + */ + +/* + * Copyright (C) 2007-2019 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-netbsd-kernel.h" +#include "internal/iprt.h" +#include <iprt/thread.h> + +#include <iprt/asm.h> +#include <iprt/asm-amd64-x86.h> +#include <iprt/assert.h> +#include <iprt/err.h> +#include <iprt/mp.h> +#include "internal/thread.h" + + +RTDECL(RTNATIVETHREAD) RTThreadNativeSelf(void) +{ + return (RTNATIVETHREAD)curlwp; +} + + +static int rtR0ThreadNbsdSleepCommon(RTMSINTERVAL cMillies) +{ + int rc; + int cTicks; + + /* + * 0 ms sleep -> yield. + */ + if (!cMillies) + { + RTThreadYield(); + return VINF_SUCCESS; + } + + /* + * Translate milliseconds into ticks and go to sleep. + */ + if (cMillies != RT_INDEFINITE_WAIT) + { + if (hz == 1000) + cTicks = cMillies; + else if (hz == 100) + cTicks = cMillies / 10; + else + { + int64_t cTicks64 = ((uint64_t)cMillies * hz) / 1000; + cTicks = (int)cTicks64; + if (cTicks != cTicks64) + cTicks = INT_MAX; + } + } + else + cTicks = 0; /* requires giant lock! */ + + rc = tsleep((void *)RTThreadSleep, + PZERO | PCATCH, + "iprtsl", /* max 6 chars */ + cTicks); + switch (rc) + { + case 0: + return VINF_SUCCESS; + case EWOULDBLOCK: + return VERR_TIMEOUT; + case EINTR: + case ERESTART: + return VERR_INTERRUPTED; + default: + AssertMsgFailed(("%d\n", rc)); + return VERR_NO_TRANSLATION; + } +} + + +RTDECL(int) RTThreadSleep(RTMSINTERVAL cMillies) +{ + return rtR0ThreadNbsdSleepCommon(cMillies); +} + + +RTDECL(int) RTThreadSleepNoLog(RTMSINTERVAL cMillies) +{ + return rtR0ThreadNbsdSleepCommon(cMillies); +} + + +RTDECL(bool) RTThreadYield(void) +{ + yield(); + return true; +} + + +RTDECL(bool) RTThreadPreemptIsEnabled(RTTHREAD hThread) +{ + Assert(hThread == NIL_RTTHREAD); + + return curlwp->l_dopreempt == 0 + && ASMIntAreEnabled(); /** @todo is there a native netbsd function/macro for this? */ +} + + +RTDECL(bool) RTThreadPreemptIsPending(RTTHREAD hThread) +{ + Assert(hThread == NIL_RTTHREAD); + + return curlwp->l_dopreempt; +} + + +RTDECL(bool) RTThreadPreemptIsPendingTrusty(void) +{ + /* yes, RTThreadPreemptIsPending is reliable. */ + return true; +} + + +RTDECL(bool) RTThreadPreemptIsPossible(void) +{ + /* yes, kernel preemption is possible. */ + return true; +} + + +RTDECL(void) RTThreadPreemptDisable(PRTTHREADPREEMPTSTATE pState) +{ + AssertPtr(pState); + + curlwp->l_nopreempt++; + __insn_barrier(); +} + + +RTDECL(void) RTThreadPreemptRestore(PRTTHREADPREEMPTSTATE pState) +{ + AssertPtr(pState); + __insn_barrier(); + if (--curlwp->l_nopreempt != 0) + return; + __insn_barrier(); + if (__predict_false(curlwp->l_dopreempt)) + kpreempt(0); + __insn_barrier(); +} + + +RTDECL(bool) RTThreadIsInInterrupt(RTTHREAD hThread) +{ + Assert(hThread == NIL_RTTHREAD); NOREF(hThread); + /** @todo NetBSD: Implement RTThreadIsInInterrupt. Required for guest + * additions! */ + return !ASMIntAreEnabled(); +} |