Adding upstream version 6.0.4-dfsg.upstream/6.0.4-dfsgupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

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);
+}
+