| 1 | /* $Id: sched-os2.cpp 82968 2020-02-04 10:35:17Z vboxsync $ */
|
|---|
| 2 | /** @file
|
|---|
| 3 | * IPRT - Scheduling, OS/2
|
|---|
| 4 | */
|
|---|
| 5 |
|
|---|
| 6 | /*
|
|---|
| 7 | * Copyright (C) 2006-2020 Oracle Corporation
|
|---|
| 8 | *
|
|---|
| 9 | * This file is part of VirtualBox Open Source Edition (OSE), as
|
|---|
| 10 | * available from http://www.virtualbox.org. This file is free software;
|
|---|
| 11 | * you can redistribute it and/or modify it under the terms of the GNU
|
|---|
| 12 | * General Public License (GPL) as published by the Free Software
|
|---|
| 13 | * Foundation, in version 2 as it comes in the "COPYING" file of the
|
|---|
| 14 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
|
|---|
| 15 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
|
|---|
| 16 | *
|
|---|
| 17 | * The contents of this file may alternatively be used under the terms
|
|---|
| 18 | * of the Common Development and Distribution License Version 1.0
|
|---|
| 19 | * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
|
|---|
| 20 | * VirtualBox OSE distribution, in which case the provisions of the
|
|---|
| 21 | * CDDL are applicable instead of those of the GPL.
|
|---|
| 22 | *
|
|---|
| 23 | * You may elect to license modified versions of this file under the
|
|---|
| 24 | * terms and conditions of either the GPL or the CDDL or both.
|
|---|
| 25 | */
|
|---|
| 26 |
|
|---|
| 27 | /** @def OS2_SCHED_ENABLED
|
|---|
| 28 | * Enables the priority scheme. */
|
|---|
| 29 | #define OS2_SCHED_ENABLED
|
|---|
| 30 |
|
|---|
| 31 |
|
|---|
| 32 | /*********************************************************************************************************************************
|
|---|
| 33 | * Header Files *
|
|---|
| 34 | *********************************************************************************************************************************/
|
|---|
| 35 | #define LOG_GROUP RTLOGGROUP_THREAD
|
|---|
| 36 | #define INCL_BASE
|
|---|
| 37 | #define INCL_ERRORS
|
|---|
| 38 | #include <os2.h>
|
|---|
| 39 |
|
|---|
| 40 | #include <iprt/thread.h>
|
|---|
| 41 | #include <iprt/log.h>
|
|---|
| 42 | #include <iprt/assert.h>
|
|---|
| 43 | #include <iprt/errcore.h>
|
|---|
| 44 | #include "internal/sched.h"
|
|---|
| 45 | #include "internal/thread.h"
|
|---|
| 46 |
|
|---|
| 47 |
|
|---|
| 48 | /*********************************************************************************************************************************
|
|---|
| 49 | * Structures and Typedefs *
|
|---|
| 50 | *********************************************************************************************************************************/
|
|---|
| 51 | /**
|
|---|
| 52 | * Configuration of one priority.
|
|---|
| 53 | */
|
|---|
| 54 | typedef struct
|
|---|
| 55 | {
|
|---|
| 56 | /** The priority. */
|
|---|
| 57 | RTPROCPRIORITY enmPriority;
|
|---|
| 58 | /** The name of this priority. */
|
|---|
| 59 | const char *pszName;
|
|---|
| 60 | /** Array scheduler attributes corresponding to each of the thread types. */
|
|---|
| 61 | struct
|
|---|
| 62 | {
|
|---|
| 63 | /** For sanity include the array index. */
|
|---|
| 64 | RTTHREADTYPE enmType;
|
|---|
| 65 | /** The OS/2 priority class. */
|
|---|
| 66 | ULONG ulClass;
|
|---|
| 67 | /** The OS/2 priority delta. */
|
|---|
| 68 | ULONG ulDelta;
|
|---|
| 69 | } aTypes[RTTHREADTYPE_END];
|
|---|
| 70 | } PROCPRIORITY;
|
|---|
| 71 |
|
|---|
| 72 | /** Matches any process priority class. */
|
|---|
| 73 | #define ANY_PROCESS_PRIORITY_CLASS (~0U)
|
|---|
| 74 |
|
|---|
| 75 |
|
|---|
| 76 | /*********************************************************************************************************************************
|
|---|
| 77 | * Global Variables *
|
|---|
| 78 | *********************************************************************************************************************************/
|
|---|
| 79 | /**
|
|---|
| 80 | * Array of static priority configurations.
|
|---|
| 81 | */
|
|---|
| 82 | static const PROCPRIORITY g_aPriorities[] =
|
|---|
| 83 | {
|
|---|
| 84 | {
|
|---|
| 85 | RTPROCPRIORITY_FLAT, "Flat",
|
|---|
| 86 | {
|
|---|
| 87 | { RTTHREADTYPE_INVALID, ~0, ~0 },
|
|---|
| 88 | { RTTHREADTYPE_INFREQUENT_POLLER, PRTYC_REGULAR, 0 },
|
|---|
| 89 | { RTTHREADTYPE_MAIN_HEAVY_WORKER, PRTYC_REGULAR, 0 },
|
|---|
| 90 | { RTTHREADTYPE_EMULATION, PRTYC_REGULAR, 0 },
|
|---|
| 91 | { RTTHREADTYPE_DEFAULT, PRTYC_REGULAR, 0 },
|
|---|
| 92 | { RTTHREADTYPE_GUI, PRTYC_REGULAR, 0 },
|
|---|
| 93 | { RTTHREADTYPE_MAIN_WORKER, PRTYC_REGULAR, 0 },
|
|---|
| 94 | { RTTHREADTYPE_VRDP_IO, PRTYC_REGULAR, 0 },
|
|---|
| 95 | { RTTHREADTYPE_DEBUGGER, PRTYC_REGULAR, 0 },
|
|---|
| 96 | { RTTHREADTYPE_MSG_PUMP, PRTYC_REGULAR, 0 },
|
|---|
| 97 | { RTTHREADTYPE_IO, PRTYC_REGULAR, 0 },
|
|---|
| 98 | { RTTHREADTYPE_TIMER, PRTYC_REGULAR, 0 }
|
|---|
| 99 | }
|
|---|
| 100 | },
|
|---|
| 101 | {
|
|---|
| 102 | RTPROCPRIORITY_LOW, "Low",
|
|---|
| 103 | {
|
|---|
| 104 | { RTTHREADTYPE_INVALID, ~0 },
|
|---|
| 105 | { RTTHREADTYPE_INFREQUENT_POLLER, PRTYC_IDLETIME, 0 },
|
|---|
| 106 | { RTTHREADTYPE_MAIN_HEAVY_WORKER, PRTYC_IDLETIME, 0 },
|
|---|
| 107 | { RTTHREADTYPE_EMULATION, PRTYC_IDLETIME, 0 },
|
|---|
| 108 | { RTTHREADTYPE_DEFAULT, PRTYC_IDLETIME, 30 },
|
|---|
| 109 | { RTTHREADTYPE_GUI, PRTYC_IDLETIME, 30 },
|
|---|
| 110 | { RTTHREADTYPE_MAIN_WORKER, PRTYC_IDLETIME, 30 },
|
|---|
| 111 | { RTTHREADTYPE_VRDP_IO, PRTYC_REGULAR, 0 },
|
|---|
| 112 | { RTTHREADTYPE_DEBUGGER, PRTYC_REGULAR, 0 },
|
|---|
| 113 | { RTTHREADTYPE_MSG_PUMP, PRTYC_REGULAR, 0 },
|
|---|
| 114 | { RTTHREADTYPE_IO, PRTYC_REGULAR, 0 },
|
|---|
| 115 | { RTTHREADTYPE_TIMER, PRTYC_REGULAR, 0 }
|
|---|
| 116 | }
|
|---|
| 117 | },
|
|---|
| 118 | {
|
|---|
| 119 | RTPROCPRIORITY_NORMAL, "Normal",
|
|---|
| 120 | {
|
|---|
| 121 | { RTTHREADTYPE_INVALID, ~0 },
|
|---|
| 122 | { RTTHREADTYPE_INFREQUENT_POLLER, PRTYC_IDLETIME, 30 },
|
|---|
| 123 | { RTTHREADTYPE_MAIN_HEAVY_WORKER, PRTYC_IDLETIME, 31 },
|
|---|
| 124 | { RTTHREADTYPE_EMULATION, PRTYC_REGULAR, 0 },
|
|---|
| 125 | { RTTHREADTYPE_DEFAULT, PRTYC_REGULAR, 5 },
|
|---|
| 126 | { RTTHREADTYPE_GUI, PRTYC_REGULAR, 10 },
|
|---|
| 127 | { RTTHREADTYPE_MAIN_WORKER, PRTYC_REGULAR, 12 },
|
|---|
| 128 | { RTTHREADTYPE_VRDP_IO, PRTYC_REGULAR, 15 },
|
|---|
| 129 | { RTTHREADTYPE_DEBUGGER, PRTYC_REGULAR, 20 },
|
|---|
| 130 | { RTTHREADTYPE_MSG_PUMP, PRTYC_REGULAR, 25 },
|
|---|
| 131 | { RTTHREADTYPE_IO, PRTYC_FOREGROUNDSERVER, 5 },
|
|---|
| 132 | { RTTHREADTYPE_TIMER, PRTYC_TIMECRITICAL, 0 }
|
|---|
| 133 | }
|
|---|
| 134 | },
|
|---|
| 135 | {
|
|---|
| 136 | RTPROCPRIORITY_HIGH, "High",
|
|---|
| 137 | {
|
|---|
| 138 | { RTTHREADTYPE_INVALID, ~0 },
|
|---|
| 139 | { RTTHREADTYPE_INFREQUENT_POLLER, PRTYC_IDLETIME, 30 },
|
|---|
| 140 | { RTTHREADTYPE_MAIN_HEAVY_WORKER, PRTYC_REGULAR, 0 },
|
|---|
| 141 | { RTTHREADTYPE_EMULATION, PRTYC_REGULAR, 0 },
|
|---|
| 142 | { RTTHREADTYPE_DEFAULT, PRTYC_REGULAR, 15 },
|
|---|
| 143 | { RTTHREADTYPE_GUI, PRTYC_REGULAR, 20 },
|
|---|
| 144 | { RTTHREADTYPE_MAIN_WORKER, PRTYC_REGULAR, 25 },
|
|---|
| 145 | { RTTHREADTYPE_VRDP_IO, PRTYC_REGULAR, 30 },
|
|---|
| 146 | { RTTHREADTYPE_DEBUGGER, PRTYC_TIMECRITICAL, 2 },
|
|---|
| 147 | { RTTHREADTYPE_MSG_PUMP, PRTYC_TIMECRITICAL, 3 },
|
|---|
| 148 | { RTTHREADTYPE_IO, PRTYC_TIMECRITICAL, 4 },
|
|---|
| 149 | { RTTHREADTYPE_TIMER, PRTYC_TIMECRITICAL, 5 }
|
|---|
| 150 | }
|
|---|
| 151 | }
|
|---|
| 152 | };
|
|---|
| 153 |
|
|---|
| 154 | /**
|
|---|
| 155 | * The dynamic default priority configuration.
|
|---|
| 156 | *
|
|---|
| 157 | * This can be recalulated at runtime depending on what the
|
|---|
| 158 | * system allow us to do. Presently we don't do this as it's
|
|---|
| 159 | * generally not a bit issue on OS/2 hosts.
|
|---|
| 160 | */
|
|---|
| 161 | static PROCPRIORITY g_aDefaultPriority =
|
|---|
| 162 | {
|
|---|
| 163 | RTPROCPRIORITY_LOW, "Default",
|
|---|
| 164 | {
|
|---|
| 165 | { RTTHREADTYPE_INVALID, ~0 },
|
|---|
| 166 | { RTTHREADTYPE_INFREQUENT_POLLER, PRTYC_IDLETIME, 30 },
|
|---|
| 167 | { RTTHREADTYPE_MAIN_HEAVY_WORKER, PRTYC_IDLETIME, 31 },
|
|---|
| 168 | { RTTHREADTYPE_EMULATION, PRTYC_REGULAR, 0 },
|
|---|
| 169 | { RTTHREADTYPE_DEFAULT, PRTYC_REGULAR, 5 },
|
|---|
| 170 | { RTTHREADTYPE_GUI, PRTYC_REGULAR, 10 },
|
|---|
| 171 | { RTTHREADTYPE_MAIN_WORKER, PRTYC_REGULAR, 12 },
|
|---|
| 172 | { RTTHREADTYPE_VRDP_IO, PRTYC_REGULAR, 15 },
|
|---|
| 173 | { RTTHREADTYPE_DEBUGGER, PRTYC_REGULAR, 20 },
|
|---|
| 174 | { RTTHREADTYPE_MSG_PUMP, PRTYC_REGULAR, 25 },
|
|---|
| 175 | { RTTHREADTYPE_IO, PRTYC_FOREGROUNDSERVER, 5 },
|
|---|
| 176 | { RTTHREADTYPE_TIMER, PRTYC_TIMECRITICAL, 0 }
|
|---|
| 177 | }
|
|---|
| 178 | };
|
|---|
| 179 |
|
|---|
| 180 |
|
|---|
| 181 | /** Pointer to the current priority configuration. */
|
|---|
| 182 | static const PROCPRIORITY *g_pProcessPriority = &g_aDefaultPriority;
|
|---|
| 183 |
|
|---|
| 184 |
|
|---|
| 185 | /**
|
|---|
| 186 | * Calculate the scheduling properties for all the threads in the default
|
|---|
| 187 | * process priority, assuming the current thread have the type enmType.
|
|---|
| 188 | *
|
|---|
| 189 | * @returns iprt status code.
|
|---|
| 190 | * @param enmType The thread type to be assumed for the current thread.
|
|---|
| 191 | */
|
|---|
| 192 | DECLHIDDEN(int) rtSchedNativeCalcDefaultPriority(RTTHREADTYPE enmType)
|
|---|
| 193 | {
|
|---|
| 194 | Assert(enmType > RTTHREADTYPE_INVALID && enmType < RTTHREADTYPE_END);
|
|---|
| 195 | return VINF_SUCCESS;
|
|---|
| 196 | }
|
|---|
| 197 |
|
|---|
| 198 |
|
|---|
| 199 | /**
|
|---|
| 200 | * Validates and sets the process priority.
|
|---|
| 201 | * This will check that all rtThreadNativeSetPriority() will success for all the
|
|---|
| 202 | * thread types when applied to the current thread.
|
|---|
| 203 | *
|
|---|
| 204 | * @returns iprt status code.
|
|---|
| 205 | * @param enmPriority The priority to validate and set.
|
|---|
| 206 | * @remark Located in sched.
|
|---|
| 207 | */
|
|---|
| 208 | DECLHIDDEN(int) rtProcNativeSetPriority(RTPROCPRIORITY enmPriority)
|
|---|
| 209 | {
|
|---|
| 210 | Assert(enmPriority > RTPROCPRIORITY_INVALID && enmPriority < RTPROCPRIORITY_LAST);
|
|---|
| 211 |
|
|---|
| 212 | if (enmPriority == RTPROCPRIORITY_DEFAULT)
|
|---|
| 213 | {
|
|---|
| 214 | g_pProcessPriority = &g_aDefaultPriority;
|
|---|
| 215 | return VINF_SUCCESS;
|
|---|
| 216 | }
|
|---|
| 217 |
|
|---|
| 218 | for (size_t i = 0; i < RT_ELEMENTS(g_aPriorities); i++)
|
|---|
| 219 | if (g_aPriorities[i].enmPriority == enmPriority)
|
|---|
| 220 | {
|
|---|
| 221 | g_pProcessPriority = &g_aPriorities[i];
|
|---|
| 222 | return VINF_SUCCESS;
|
|---|
| 223 | }
|
|---|
| 224 |
|
|---|
| 225 | AssertFailedReturn(VERR_INTERNAL_ERROR);
|
|---|
| 226 | }
|
|---|
| 227 |
|
|---|
| 228 |
|
|---|
| 229 | /**
|
|---|
| 230 | * Sets the priority of the thread according to the thread type
|
|---|
| 231 | * and current process priority.
|
|---|
| 232 | *
|
|---|
| 233 | * The RTTHREADINT::enmType member has not yet been updated and will be updated by
|
|---|
| 234 | * the caller on a successful return.
|
|---|
| 235 | *
|
|---|
| 236 | * @returns iprt status code.
|
|---|
| 237 | * @param pThread The thread in question.
|
|---|
| 238 | * @param enmType The thread type.
|
|---|
| 239 | * @remark Located in sched.
|
|---|
| 240 | */
|
|---|
| 241 | DECLHIDDEN(int) rtThreadNativeSetPriority(PRTTHREADINT pThread, RTTHREADTYPE enmType)
|
|---|
| 242 | {
|
|---|
| 243 | Assert(enmType > RTTHREADTYPE_INVALID && enmType < RTTHREADTYPE_END);
|
|---|
| 244 | AssertMsg(g_pProcessPriority && g_pProcessPriority->aTypes[enmType].enmType == enmType,
|
|---|
| 245 | ("enmType=%d entry=%d\n", enmType, g_pProcessPriority->aTypes[enmType].enmType));
|
|---|
| 246 |
|
|---|
| 247 | #ifdef OS2_SCHED_ENABLED
|
|---|
| 248 | APIRET rc = DosSetPriority(PRTYS_THREAD, g_pProcessPriority->aTypes[enmType].ulClass, g_pProcessPriority->aTypes[enmType].ulDelta, (ULONG)pThread->Core.Key & 0xffff /*tid*/);
|
|---|
| 249 | AssertMsg(rc == NO_ERROR, ("%d\n", rc));
|
|---|
| 250 | return RTErrConvertFromOS2(rc);
|
|---|
| 251 | #else
|
|---|
| 252 | return VINF_SUCCESS;
|
|---|
| 253 | #endif
|
|---|
| 254 | }
|
|---|
| 255 |
|
|---|
