diff options
Diffstat (limited to 'src/VBox/Runtime/r0drv/darwin/thread2-r0drv-darwin.cpp')
| -rw-r--r-- | src/VBox/Runtime/r0drv/darwin/thread2-r0drv-darwin.cpp | 192 |
1 files changed, 192 insertions, 0 deletions
diff --git a/src/VBox/Runtime/r0drv/darwin/thread2-r0drv-darwin.cpp b/src/VBox/Runtime/r0drv/darwin/thread2-r0drv-darwin.cpp new file mode 100644 index 00000000..629d3f98 --- /dev/null +++ b/src/VBox/Runtime/r0drv/darwin/thread2-r0drv-darwin.cpp @@ -0,0 +1,192 @@ +/* $Id: thread2-r0drv-darwin.cpp $ */ +/** @file + * IPRT - Threads (Part 2), Ring-0 Driver, Darwin. + */ + +/* + * Copyright (C) 2006-2019 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-darwin-kernel.h" +#include "internal/iprt.h" +#include <iprt/thread.h> + +#if defined(RT_ARCH_AMD64) || defined(RT_ARCH_X86) +# include <iprt/asm-amd64-x86.h> +#endif +#include <iprt/assert.h> +#include <iprt/errcore.h> +#include "internal/thread.h" + + +DECLHIDDEN(int) rtThreadNativeInit(void) +{ + /* No TLS in Ring-0. :-/ */ + return VINF_SUCCESS; +} + + +RTDECL(RTTHREAD) RTThreadSelf(void) +{ + return rtThreadGetByNative((RTNATIVETHREAD)current_thread()); +} + + +DECLHIDDEN(int) rtThreadNativeSetPriority(PRTTHREADINT pThread, RTTHREADTYPE enmType) +{ + /* + * Convert the priority type to scheduling policies. + * (This is really just guess work.) + */ + bool fSetExtended = false; + thread_extended_policy Extended = { true }; + bool fSetTimeContstraint = false; + thread_time_constraint_policy TimeConstraint = { 0, 0, 0, true }; + thread_precedence_policy Precedence = { 0 }; + switch (enmType) + { + case RTTHREADTYPE_INFREQUENT_POLLER: + Precedence.importance = 1; + break; + + case RTTHREADTYPE_EMULATION: + Precedence.importance = 30; + break; + + case RTTHREADTYPE_DEFAULT: + Precedence.importance = 31; + break; + + case RTTHREADTYPE_MSG_PUMP: + Precedence.importance = 34; + break; + + case RTTHREADTYPE_IO: + Precedence.importance = 98; + break; + + case RTTHREADTYPE_TIMER: + Precedence.importance = 0x7fffffff; + + fSetExtended = true; + Extended.timeshare = FALSE; + + fSetTimeContstraint = true; + TimeConstraint.period = 0; /* not really true for a real timer thread, but we've really no idea. */ + TimeConstraint.computation = rtDarwinAbsTimeFromNano(100000); /* 100 us*/ + TimeConstraint.constraint = rtDarwinAbsTimeFromNano(500000); /* 500 us */ + TimeConstraint.preemptible = FALSE; + break; + + default: + AssertMsgFailed(("enmType=%d\n", enmType)); + return VERR_INVALID_PARAMETER; + } + RT_ASSERT_INTS_ON(); + + /* + * Do the actual modification. + */ + kern_return_t kr = thread_policy_set((thread_t)pThread->Core.Key, THREAD_PRECEDENCE_POLICY, + (thread_policy_t)&Precedence, THREAD_PRECEDENCE_POLICY_COUNT); + AssertMsg(kr == KERN_SUCCESS, ("%rc\n", kr)); NOREF(kr); + + if (fSetExtended) + { + kr = thread_policy_set((thread_t)pThread->Core.Key, THREAD_EXTENDED_POLICY, + (thread_policy_t)&Extended, THREAD_EXTENDED_POLICY_COUNT); + AssertMsg(kr == KERN_SUCCESS, ("%rc\n", kr)); + } + + if (fSetTimeContstraint) + { + kr = thread_policy_set((thread_t)pThread->Core.Key, THREAD_TIME_CONSTRAINT_POLICY, + (thread_policy_t)&TimeConstraint, THREAD_TIME_CONSTRAINT_POLICY_COUNT); + AssertMsg(kr == KERN_SUCCESS, ("%rc\n", kr)); + } + + return VINF_SUCCESS; /* ignore any errors for now */ +} + + +DECLHIDDEN(int) rtThreadNativeAdopt(PRTTHREADINT pThread) +{ + RT_NOREF(pThread); + return VERR_NOT_IMPLEMENTED; +} + + +DECLHIDDEN(void) rtThreadNativeWaitKludge(PRTTHREADINT pThread) +{ + RT_NOREF(pThread); + /** @todo fix RTThreadWait/RTR0Term race on darwin. */ + RTThreadSleep(1); +} + + +DECLHIDDEN(void) rtThreadNativeDestroy(PRTTHREADINT pThread) +{ + RT_NOREF(pThread); +} + + +/** + * Native kernel thread wrapper function. + * + * This will forward to rtThreadMain and do termination upon return. + * + * @param pvArg Pointer to the argument package. + * @param Ignored Wait result, which we ignore. + */ +static void rtThreadNativeMain(void *pvArg, wait_result_t Ignored) +{ + RT_NOREF(Ignored); + const thread_t Self = current_thread(); + PRTTHREADINT pThread = (PRTTHREADINT)pvArg; + + rtThreadMain(pThread, (RTNATIVETHREAD)Self, &pThread->szName[0]); + + kern_return_t kr = thread_terminate(Self); + AssertFatalMsgFailed(("kr=%d\n", kr)); +} + + +DECLHIDDEN(int) rtThreadNativeCreate(PRTTHREADINT pThreadInt, PRTNATIVETHREAD pNativeThread) +{ + RT_ASSERT_PREEMPTIBLE(); + IPRT_DARWIN_SAVE_EFL_AC(); + + thread_t NativeThread; + kern_return_t kr = kernel_thread_start(rtThreadNativeMain, pThreadInt, &NativeThread); + if (kr == KERN_SUCCESS) + { + *pNativeThread = (RTNATIVETHREAD)NativeThread; + thread_deallocate(NativeThread); + IPRT_DARWIN_RESTORE_EFL_AC(); + return VINF_SUCCESS; + } + IPRT_DARWIN_RESTORE_EFL_AC(); + return RTErrConvertFromMachKernReturn(kr); +} + |