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, 185 insertions, 0 deletions

diff --git a/src/VBox/Runtime/r0drv/solaris/thread-r0drv-solaris.c b/src/VBox/Runtime/r0drv/solaris/thread-r0drv-solaris.c
new file mode 100644
index 00000000..c4650db6
--- /dev/null
+++ b/src/VBox/Runtime/r0drv/solaris/thread-r0drv-solaris.c
@@ -0,0 +1,185 @@
+/* $Id: thread-r0drv-solaris.c $ */
+/** @file
+ * IPRT - Threads, Ring-0 Driver, Solaris.
+ */
+
+/*
+ * 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-solaris-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 <iprt/mp.h>
+
+#define SOL_THREAD_PREEMPT       (*((char *)curthread + g_offrtSolThreadPreempt))
+#define SOL_CPU_RUNRUN           (*((char *)CPU + g_offrtSolCpuPreempt))
+#define SOL_CPU_KPRUNRUN         (*((char *)CPU + g_offrtSolCpuForceKernelPreempt))
+
+RTDECL(RTNATIVETHREAD) RTThreadNativeSelf(void)
+{
+    return (RTNATIVETHREAD)curthread;
+}
+
+
+static int rtR0ThreadSolSleepCommon(RTMSINTERVAL cMillies)
+{
+    clock_t cTicks;
+    RT_ASSERT_PREEMPTIBLE();
+
+    if (!cMillies)
+    {
+        RTThreadYield();
+        return VINF_SUCCESS;
+    }
+
+    if (cMillies != RT_INDEFINITE_WAIT)
+        cTicks = drv_usectohz((clock_t)(cMillies * 1000L));
+    else
+        cTicks = 0;
+
+    delay(cTicks);
+    return VINF_SUCCESS;
+}
+
+
+RTDECL(int) RTThreadSleep(RTMSINTERVAL cMillies)
+{
+    return rtR0ThreadSolSleepCommon(cMillies);
+}
+
+
+RTDECL(int) RTThreadSleepNoLog(RTMSINTERVAL cMillies)
+{
+    return rtR0ThreadSolSleepCommon(cMillies);
+}
+
+
+RTDECL(bool) RTThreadYield(void)
+{
+    RT_ASSERT_PREEMPTIBLE();
+
+    RTTHREADPREEMPTSTATE PreemptState = RTTHREADPREEMPTSTATE_INITIALIZER;
+    RTThreadPreemptDisable(&PreemptState);
+
+    char const bThreadPreempt = SOL_THREAD_PREEMPT;
+    char const bForcePreempt  = SOL_CPU_KPRUNRUN;
+    bool fWillYield = false;
+    Assert(bThreadPreempt >= 1);
+
+    /*
+     * If we are the last preemption enabler for this thread and if force
+     * preemption is set on the CPU, only then we are guaranteed to be preempted.
+     */
+    if (bThreadPreempt == 1 && bForcePreempt != 0)
+        fWillYield = true;
+
+    RTThreadPreemptRestore(&PreemptState);
+    return fWillYield;
+}
+
+
+RTDECL(bool) RTThreadPreemptIsEnabled(RTTHREAD hThread)
+{
+    Assert(hThread == NIL_RTTHREAD);
+    if (RT_UNLIKELY(g_frtSolInitDone == false))
+    {
+        cmn_err(CE_CONT, "!RTThreadPreemptIsEnabled called before RTR0Init!\n");
+        return true;
+    }
+
+    bool fThreadPreempt = false;
+    if (SOL_THREAD_PREEMPT == 0)
+        fThreadPreempt = true;
+
+    if (!fThreadPreempt)
+        return false;
+#if defined(RT_ARCH_AMD64) || defined(RT_ARCH_X86)
+    if (!ASMIntAreEnabled())
+        return false;
+#endif
+    if (getpil() >= DISP_LEVEL)
+        return false;
+    return true;
+}
+
+
+RTDECL(bool) RTThreadPreemptIsPending(RTTHREAD hThread)
+{
+    Assert(hThread == NIL_RTTHREAD);
+
+    char const bPreempt      = SOL_CPU_RUNRUN;
+    char const bForcePreempt = SOL_CPU_KPRUNRUN;
+    return (bPreempt != 0 || bForcePreempt != 0);
+}
+
+
+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);
+
+    SOL_THREAD_PREEMPT++;
+    Assert(SOL_THREAD_PREEMPT >= 1);
+
+    RT_ASSERT_PREEMPT_CPUID_DISABLE(pState);
+}
+
+
+RTDECL(void) RTThreadPreemptRestore(PRTTHREADPREEMPTSTATE pState)
+{
+    AssertPtr(pState);
+    RT_ASSERT_PREEMPT_CPUID_RESTORE(pState);
+
+    Assert(SOL_THREAD_PREEMPT >= 1);
+    if (--SOL_THREAD_PREEMPT == 0 && SOL_CPU_RUNRUN != 0)
+        kpreempt(KPREEMPT_SYNC);
+}
+
+
+RTDECL(bool) RTThreadIsInInterrupt(RTTHREAD hThread)
+{
+    Assert(hThread == NIL_RTTHREAD);
+    return servicing_interrupt() ? true : false;
+}
+