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diff --git a/src/VBox/Runtime/r3/win/sched-win.cpp b/src/VBox/Runtime/r3/win/sched-win.cpp
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+/* $Id: sched-win.cpp $ */
+/** @file
+ * IPRT - Scheduling, Win32.
+ */
+
+/*
+ * 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.
+ */
+
+/** @def WIN32_SCHED_ENABLED
+ * Enables the priority scheme. */
+#define WIN32_SCHED_ENABLED
+
+
+/*********************************************************************************************************************************
+* Header Files *
+*********************************************************************************************************************************/
+#define LOG_GROUP RTLOGGROUP_THREAD
+#include <iprt/win/windows.h>
+
+#include <iprt/thread.h>
+#include <iprt/log.h>
+#include <iprt/assert.h>
+#include <iprt/errcore.h>
+#include "internal/sched.h"
+#include "internal/thread.h"
+
+
+/*********************************************************************************************************************************
+* Structures and Typedefs *
+*********************************************************************************************************************************/
+/**
+ * Configuration of one priority.
+ */
+typedef struct
+{
+ /** The priority. */
+ RTPROCPRIORITY enmPriority;
+ /** The name of this priority. */
+ const char *pszName;
+ /** The Win32 process priority class. If ANY_PROCESS_PRIORITY_CLASS the
+ * process priority class is left unchanged. */
+ DWORD dwProcessPriorityClass;
+ /** Array scheduler attributes corresponding to each of the thread types. */
+ struct
+ {
+ /** For sanity include the array index. */
+ RTTHREADTYPE enmType;
+ /** The Win32 thread priority. */
+ int iThreadPriority;
+ } aTypes[RTTHREADTYPE_END];
+} PROCPRIORITY;
+
+/** Matches any process priority class. */
+#define ANY_PROCESS_PRIORITY_CLASS (~0U)
+
+
+/*********************************************************************************************************************************
+* Global Variables *
+*********************************************************************************************************************************/
+/**
+ * Array of static priority configurations.
+ */
+static const PROCPRIORITY g_aPriorities[] =
+{
+ {
+ RTPROCPRIORITY_FLAT, "Flat", ANY_PROCESS_PRIORITY_CLASS,
+ {
+ { RTTHREADTYPE_INVALID, ~0 },
+ { RTTHREADTYPE_INFREQUENT_POLLER, THREAD_PRIORITY_NORMAL },
+ { RTTHREADTYPE_MAIN_HEAVY_WORKER, THREAD_PRIORITY_NORMAL },
+ { RTTHREADTYPE_EMULATION, THREAD_PRIORITY_NORMAL },
+ { RTTHREADTYPE_DEFAULT, THREAD_PRIORITY_NORMAL },
+ { RTTHREADTYPE_GUI, THREAD_PRIORITY_NORMAL },
+ { RTTHREADTYPE_MAIN_WORKER, THREAD_PRIORITY_NORMAL },
+ { RTTHREADTYPE_VRDP_IO, THREAD_PRIORITY_NORMAL },
+ { RTTHREADTYPE_DEBUGGER, THREAD_PRIORITY_NORMAL },
+ { RTTHREADTYPE_MSG_PUMP, THREAD_PRIORITY_NORMAL },
+ { RTTHREADTYPE_IO, THREAD_PRIORITY_NORMAL },
+ { RTTHREADTYPE_TIMER, THREAD_PRIORITY_NORMAL }
+ }
+ },
+ {
+ RTPROCPRIORITY_LOW, "Low - Below Normal", BELOW_NORMAL_PRIORITY_CLASS,
+ {
+ { RTTHREADTYPE_INVALID, ~0 },
+ { RTTHREADTYPE_INFREQUENT_POLLER, THREAD_PRIORITY_LOWEST },
+ { RTTHREADTYPE_MAIN_HEAVY_WORKER, THREAD_PRIORITY_BELOW_NORMAL },
+ { RTTHREADTYPE_EMULATION, THREAD_PRIORITY_NORMAL },
+ { RTTHREADTYPE_DEFAULT, THREAD_PRIORITY_NORMAL },
+ { RTTHREADTYPE_GUI, THREAD_PRIORITY_NORMAL },
+ { RTTHREADTYPE_MAIN_WORKER, THREAD_PRIORITY_NORMAL },
+ { RTTHREADTYPE_VRDP_IO, THREAD_PRIORITY_ABOVE_NORMAL },
+ { RTTHREADTYPE_DEBUGGER, THREAD_PRIORITY_ABOVE_NORMAL },
+ { RTTHREADTYPE_MSG_PUMP, THREAD_PRIORITY_ABOVE_NORMAL },
+ { RTTHREADTYPE_IO, THREAD_PRIORITY_HIGHEST },
+ { RTTHREADTYPE_TIMER, THREAD_PRIORITY_HIGHEST }
+ }
+ },
+ {
+ RTPROCPRIORITY_LOW, "Low", ANY_PROCESS_PRIORITY_CLASS,
+ {
+ { RTTHREADTYPE_INVALID, ~0 },
+ { RTTHREADTYPE_INFREQUENT_POLLER, THREAD_PRIORITY_LOWEST },
+ { RTTHREADTYPE_MAIN_HEAVY_WORKER, THREAD_PRIORITY_LOWEST },
+ { RTTHREADTYPE_EMULATION, THREAD_PRIORITY_LOWEST },
+ { RTTHREADTYPE_DEFAULT, THREAD_PRIORITY_BELOW_NORMAL },
+ { RTTHREADTYPE_GUI, THREAD_PRIORITY_BELOW_NORMAL },
+ { RTTHREADTYPE_MAIN_WORKER, THREAD_PRIORITY_BELOW_NORMAL },
+ { RTTHREADTYPE_VRDP_IO, THREAD_PRIORITY_NORMAL },
+ { RTTHREADTYPE_DEBUGGER, THREAD_PRIORITY_NORMAL },
+ { RTTHREADTYPE_MSG_PUMP, THREAD_PRIORITY_NORMAL },
+ { RTTHREADTYPE_IO, THREAD_PRIORITY_NORMAL },
+ { RTTHREADTYPE_TIMER, THREAD_PRIORITY_NORMAL }
+ }
+ },
+ {
+ RTPROCPRIORITY_NORMAL, "Normal - Normal", NORMAL_PRIORITY_CLASS,
+ {
+ { RTTHREADTYPE_INVALID, ~0 },
+ { RTTHREADTYPE_INFREQUENT_POLLER, THREAD_PRIORITY_LOWEST },
+ { RTTHREADTYPE_MAIN_HEAVY_WORKER, THREAD_PRIORITY_LOWEST },
+ { RTTHREADTYPE_EMULATION, THREAD_PRIORITY_BELOW_NORMAL },
+ { RTTHREADTYPE_DEFAULT, THREAD_PRIORITY_NORMAL },
+ { RTTHREADTYPE_GUI, THREAD_PRIORITY_NORMAL },
+ { RTTHREADTYPE_MAIN_WORKER, THREAD_PRIORITY_NORMAL },
+ { RTTHREADTYPE_VRDP_IO, THREAD_PRIORITY_ABOVE_NORMAL },
+ { RTTHREADTYPE_DEBUGGER, THREAD_PRIORITY_ABOVE_NORMAL },
+ { RTTHREADTYPE_MSG_PUMP, THREAD_PRIORITY_ABOVE_NORMAL },
+ { RTTHREADTYPE_IO, THREAD_PRIORITY_ABOVE_NORMAL },
+ { RTTHREADTYPE_TIMER, THREAD_PRIORITY_HIGHEST }
+ }
+ },
+ {
+ RTPROCPRIORITY_NORMAL, "Normal", ANY_PROCESS_PRIORITY_CLASS,
+ {
+ { RTTHREADTYPE_INVALID, ~0 },
+ { RTTHREADTYPE_INFREQUENT_POLLER, THREAD_PRIORITY_LOWEST },
+ { RTTHREADTYPE_MAIN_HEAVY_WORKER, THREAD_PRIORITY_LOWEST },
+ { RTTHREADTYPE_EMULATION, THREAD_PRIORITY_BELOW_NORMAL },
+ { RTTHREADTYPE_DEFAULT, THREAD_PRIORITY_NORMAL },
+ { RTTHREADTYPE_GUI, THREAD_PRIORITY_NORMAL },
+ { RTTHREADTYPE_MAIN_WORKER, THREAD_PRIORITY_NORMAL },
+ { RTTHREADTYPE_VRDP_IO, THREAD_PRIORITY_ABOVE_NORMAL },
+ { RTTHREADTYPE_DEBUGGER, THREAD_PRIORITY_ABOVE_NORMAL },
+ { RTTHREADTYPE_MSG_PUMP, THREAD_PRIORITY_ABOVE_NORMAL },
+ { RTTHREADTYPE_IO, THREAD_PRIORITY_ABOVE_NORMAL },
+ { RTTHREADTYPE_TIMER, THREAD_PRIORITY_HIGHEST }
+ }
+ },
+ {
+ RTPROCPRIORITY_HIGH, "High - High", HIGH_PRIORITY_CLASS,
+ {
+ { RTTHREADTYPE_INVALID, ~0 },
+ { RTTHREADTYPE_INFREQUENT_POLLER, THREAD_PRIORITY_LOWEST },
+ { RTTHREADTYPE_MAIN_HEAVY_WORKER, THREAD_PRIORITY_LOWEST },
+ { RTTHREADTYPE_EMULATION, THREAD_PRIORITY_BELOW_NORMAL },
+ { RTTHREADTYPE_DEFAULT, THREAD_PRIORITY_NORMAL },
+ { RTTHREADTYPE_GUI, THREAD_PRIORITY_NORMAL },
+ { RTTHREADTYPE_MAIN_WORKER, THREAD_PRIORITY_NORMAL },
+ { RTTHREADTYPE_VRDP_IO, THREAD_PRIORITY_ABOVE_NORMAL },
+ { RTTHREADTYPE_DEBUGGER, THREAD_PRIORITY_ABOVE_NORMAL },
+ { RTTHREADTYPE_MSG_PUMP, THREAD_PRIORITY_ABOVE_NORMAL },
+ { RTTHREADTYPE_IO, THREAD_PRIORITY_HIGHEST },
+ { RTTHREADTYPE_TIMER, THREAD_PRIORITY_HIGHEST }
+ }
+ },
+ {
+ RTPROCPRIORITY_HIGH, "High - Above Normal", ABOVE_NORMAL_PRIORITY_CLASS,
+ {
+ { RTTHREADTYPE_INVALID, ~0 },
+ { RTTHREADTYPE_INFREQUENT_POLLER, THREAD_PRIORITY_LOWEST },
+ { RTTHREADTYPE_MAIN_HEAVY_WORKER, THREAD_PRIORITY_LOWEST },
+ { RTTHREADTYPE_EMULATION, THREAD_PRIORITY_BELOW_NORMAL },
+ { RTTHREADTYPE_DEFAULT, THREAD_PRIORITY_NORMAL },
+ { RTTHREADTYPE_GUI, THREAD_PRIORITY_NORMAL },
+ { RTTHREADTYPE_MAIN_WORKER, THREAD_PRIORITY_NORMAL },
+ { RTTHREADTYPE_VRDP_IO, THREAD_PRIORITY_ABOVE_NORMAL },
+ { RTTHREADTYPE_DEBUGGER, THREAD_PRIORITY_ABOVE_NORMAL },
+ { RTTHREADTYPE_MSG_PUMP, THREAD_PRIORITY_ABOVE_NORMAL },
+ { RTTHREADTYPE_IO, THREAD_PRIORITY_HIGHEST },
+ { RTTHREADTYPE_TIMER, THREAD_PRIORITY_HIGHEST }
+ }
+ },
+ {
+ RTPROCPRIORITY_HIGH, "High", ANY_PROCESS_PRIORITY_CLASS,
+ {
+ { RTTHREADTYPE_INVALID, ~0 },
+ { RTTHREADTYPE_INFREQUENT_POLLER, THREAD_PRIORITY_BELOW_NORMAL },
+ { RTTHREADTYPE_MAIN_HEAVY_WORKER, THREAD_PRIORITY_NORMAL },
+ { RTTHREADTYPE_EMULATION, THREAD_PRIORITY_NORMAL },
+ { RTTHREADTYPE_DEFAULT, THREAD_PRIORITY_ABOVE_NORMAL },
+ { RTTHREADTYPE_GUI, THREAD_PRIORITY_ABOVE_NORMAL },
+ { RTTHREADTYPE_MAIN_WORKER, THREAD_PRIORITY_ABOVE_NORMAL },
+ { RTTHREADTYPE_VRDP_IO, THREAD_PRIORITY_ABOVE_NORMAL },
+ { RTTHREADTYPE_DEBUGGER, THREAD_PRIORITY_HIGHEST },
+ { RTTHREADTYPE_MSG_PUMP, THREAD_PRIORITY_HIGHEST },
+ { RTTHREADTYPE_IO, THREAD_PRIORITY_HIGHEST },
+ { RTTHREADTYPE_TIMER, THREAD_PRIORITY_HIGHEST }
+ }
+ }
+};
+
+/**
+ * The dynamic default priority configuration.
+ *
+ * This can be recalulated at runtime depending on what the
+ * system allow us to do. Presently we don't do this as it's
+ * generally not a bit issue on Win32 hosts.
+ */
+static PROCPRIORITY g_aDefaultPriority =
+{
+ RTPROCPRIORITY_LOW, "Default", ANY_PROCESS_PRIORITY_CLASS,
+ {
+ { RTTHREADTYPE_INVALID, ~0 },
+ { RTTHREADTYPE_INFREQUENT_POLLER, THREAD_PRIORITY_LOWEST },
+ { RTTHREADTYPE_MAIN_HEAVY_WORKER, THREAD_PRIORITY_BELOW_NORMAL },
+ { RTTHREADTYPE_EMULATION, THREAD_PRIORITY_NORMAL },
+ { RTTHREADTYPE_DEFAULT, THREAD_PRIORITY_NORMAL },
+ { RTTHREADTYPE_GUI, THREAD_PRIORITY_NORMAL },
+ { RTTHREADTYPE_MAIN_WORKER, THREAD_PRIORITY_NORMAL },
+ { RTTHREADTYPE_VRDP_IO, THREAD_PRIORITY_NORMAL },
+ { RTTHREADTYPE_DEBUGGER, THREAD_PRIORITY_ABOVE_NORMAL },
+ { RTTHREADTYPE_MSG_PUMP, THREAD_PRIORITY_ABOVE_NORMAL },
+ { RTTHREADTYPE_IO, THREAD_PRIORITY_HIGHEST },
+ { RTTHREADTYPE_TIMER, THREAD_PRIORITY_HIGHEST }
+ }
+};
+
+
+/** Pointer to the current priority configuration. */
+static const PROCPRIORITY *g_pProcessPriority = &g_aDefaultPriority;
+
+
+/**
+ * Calculate the scheduling properties for all the threads in the default
+ * process priority, assuming the current thread have the type enmType.
+ *
+ * @returns iprt status code.
+ * @param enmType The thread type to be assumed for the current thread.
+ */
+DECLHIDDEN(int) rtSchedNativeCalcDefaultPriority(RTTHREADTYPE enmType)
+{
+ Assert(enmType > RTTHREADTYPE_INVALID && enmType < RTTHREADTYPE_END); RT_NOREF_PV(enmType);
+ return VINF_SUCCESS;
+}
+
+
+/**
+ * Validates and sets the process priority.
+ * This will check that all rtThreadNativeSetPriority() will success for all the
+ * thread types when applied to the current thread.
+ *
+ * @returns iprt status code.
+ * @param enmPriority The priority to validate and set.
+ * @remark Located in sched.
+ */
+DECLHIDDEN(int) rtProcNativeSetPriority(RTPROCPRIORITY enmPriority)
+{
+ Assert(enmPriority > RTPROCPRIORITY_INVALID && enmPriority < RTPROCPRIORITY_LAST); RT_NOREF_PV(enmPriority);
+
+ if (enmPriority == RTPROCPRIORITY_DEFAULT)
+ {
+ g_pProcessPriority = &g_aDefaultPriority;
+ return VINF_SUCCESS;
+ }
+
+ for (size_t i = 0; i < RT_ELEMENTS(g_aPriorities); i++)
+ if ( g_aPriorities[i].enmPriority == enmPriority
+ && g_aPriorities[i].dwProcessPriorityClass == ANY_PROCESS_PRIORITY_CLASS)
+ {
+ g_pProcessPriority = &g_aPriorities[i];
+ return VINF_SUCCESS;
+ }
+
+ AssertFailedReturn(VERR_INTERNAL_ERROR);
+}
+
+
+/**
+ * Gets the win32 thread handle.
+ *
+ * @returns Valid win32 handle for the specified thread.
+ * @param pThread The thread.
+ */
+DECLINLINE(HANDLE) rtThreadNativeGetHandle(PRTTHREADINT pThread)
+{
+ if ((uintptr_t)pThread->Core.Key == GetCurrentThreadId())
+ return GetCurrentThread();
+ return (HANDLE)pThread->hThread;
+}
+
+
+/**
+ * Sets the priority of the thread according to the thread type
+ * and current process priority.
+ *
+ * The RTTHREADINT::enmType member has not yet been updated and will be updated by
+ * the caller on a successful return.
+ *
+ * @returns iprt status code.
+ * @param pThread The thread in question.
+ * @param enmType The thread type.
+ * @remark Located in sched.
+ */
+DECLHIDDEN(int) rtThreadNativeSetPriority(PRTTHREADINT pThread, RTTHREADTYPE enmType)
+{
+ Assert(enmType > RTTHREADTYPE_INVALID && enmType < RTTHREADTYPE_END);
+ AssertMsg(g_pProcessPriority && g_pProcessPriority->aTypes[enmType].enmType == enmType,
+ ("enmType=%d entry=%d\n", enmType, g_pProcessPriority->aTypes[enmType].enmType));
+
+#ifdef WIN32_SCHED_ENABLED
+ if (SetThreadPriority(rtThreadNativeGetHandle(pThread), g_pProcessPriority->aTypes[enmType].iThreadPriority))
+ return VINF_SUCCESS;
+
+ DWORD dwLastError = GetLastError();
+ int rc = RTErrConvertFromWin32(dwLastError);
+ AssertMsgFailed(("SetThreadPriority(%p, %d) failed, dwLastError=%d rc=%Rrc\n",
+ rtThreadNativeGetHandle(pThread), g_pProcessPriority->aTypes[enmType].iThreadPriority, dwLastError, rc));
+ return rc;
+#else
+ return VINF_SUCCESS;
+#endif
+}
+