1 | /* $Id: TMInternal.h 54270 2015-02-18 16:11:34Z vboxsync $ */
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2 | /** @file
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3 | * TM - Internal header file.
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4 | */
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5 |
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6 | /*
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7 | * Copyright (C) 2006-2015 Oracle Corporation
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8 | *
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9 | * This file is part of VirtualBox Open Source Edition (OSE), as
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10 | * available from http://www.virtualbox.org. This file is free software;
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11 | * you can redistribute it and/or modify it under the terms of the GNU
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12 | * General Public License (GPL) as published by the Free Software
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13 | * Foundation, in version 2 as it comes in the "COPYING" file of the
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14 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
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15 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
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16 | */
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17 |
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18 | #ifndef ___TMInternal_h
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19 | #define ___TMInternal_h
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20 |
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21 | #include <VBox/cdefs.h>
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22 | #include <VBox/types.h>
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23 | #include <iprt/time.h>
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24 | #include <iprt/timer.h>
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25 | #include <iprt/assert.h>
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26 | #include <VBox/vmm/stam.h>
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27 | #include <VBox/vmm/pdmcritsect.h>
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28 |
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29 | RT_C_DECLS_BEGIN
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30 |
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31 |
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32 | /** @defgroup grp_tm_int Internal
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33 | * @ingroup grp_tm
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34 | * @internal
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35 | * @{
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36 | */
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37 |
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38 | /** Frequency of the real clock. */
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39 | #define TMCLOCK_FREQ_REAL UINT32_C(1000)
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40 | /** Frequency of the virtual clock. */
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41 | #define TMCLOCK_FREQ_VIRTUAL UINT32_C(1000000000)
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42 |
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43 |
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44 | /**
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45 | * Timer type.
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46 | */
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47 | typedef enum TMTIMERTYPE
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48 | {
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49 | /** Device timer. */
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50 | TMTIMERTYPE_DEV = 1,
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51 | /** USB device timer. */
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52 | TMTIMERTYPE_USB,
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53 | /** Driver timer. */
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54 | TMTIMERTYPE_DRV,
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55 | /** Internal timer . */
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56 | TMTIMERTYPE_INTERNAL,
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57 | /** External timer. */
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58 | TMTIMERTYPE_EXTERNAL
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59 | } TMTIMERTYPE;
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60 |
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61 | /**
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62 | * Timer state
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63 | */
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64 | typedef enum TMTIMERSTATE
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65 | {
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66 | /** Timer is stopped. */
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67 | TMTIMERSTATE_STOPPED = 1,
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68 | /** Timer is active. */
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69 | TMTIMERSTATE_ACTIVE,
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70 | /** Timer is expired, getting expire and unlinking. */
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71 | TMTIMERSTATE_EXPIRED_GET_UNLINK,
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72 | /** Timer is expired and is being delivered. */
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73 | TMTIMERSTATE_EXPIRED_DELIVER,
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74 |
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75 | /** Timer is stopped but still in the active list.
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76 | * Currently in the ScheduleTimers list. */
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77 | TMTIMERSTATE_PENDING_STOP,
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78 | /** Timer is stopped but needs unlinking from the ScheduleTimers list.
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79 | * Currently in the ScheduleTimers list. */
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80 | TMTIMERSTATE_PENDING_STOP_SCHEDULE,
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81 | /** Timer is being modified and will soon be pending scheduling.
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82 | * Currently in the ScheduleTimers list. */
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83 | TMTIMERSTATE_PENDING_SCHEDULE_SET_EXPIRE,
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84 | /** Timer is pending scheduling.
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85 | * Currently in the ScheduleTimers list. */
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86 | TMTIMERSTATE_PENDING_SCHEDULE,
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87 | /** Timer is being modified and will soon be pending rescheduling.
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88 | * Currently in the ScheduleTimers list and the active list. */
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89 | TMTIMERSTATE_PENDING_RESCHEDULE_SET_EXPIRE,
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90 | /** Timer is modified and is now pending rescheduling.
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91 | * Currently in the ScheduleTimers list and the active list. */
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92 | TMTIMERSTATE_PENDING_RESCHEDULE,
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93 | /** Timer is being destroyed. */
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94 | TMTIMERSTATE_DESTROY,
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95 | /** Timer is free. */
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96 | TMTIMERSTATE_FREE
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97 | } TMTIMERSTATE;
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98 |
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99 | /** Predicate that returns true if the give state is pending scheduling or
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100 | * rescheduling of any kind. Will reference the argument more than once! */
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101 | #define TMTIMERSTATE_IS_PENDING_SCHEDULING(enmState) \
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102 | ( (enmState) <= TMTIMERSTATE_PENDING_RESCHEDULE \
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103 | && (enmState) >= TMTIMERSTATE_PENDING_SCHEDULE_SET_EXPIRE)
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104 |
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105 |
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106 | /**
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107 | * Internal representation of a timer.
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108 | *
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109 | * For correct serialization (without the use of semaphores and
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110 | * other blocking/slow constructs) certain rules applies to updating
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111 | * this structure:
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112 | * - For thread other than EMT only u64Expire, enmState and pScheduleNext*
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113 | * are changeable. Everything else is out of bounds.
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114 | * - Updating of u64Expire timer can only happen in the TMTIMERSTATE_STOPPED
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115 | * and TMTIMERSTATE_PENDING_RESCHEDULING_SET_EXPIRE states.
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116 | * - Timers in the TMTIMERSTATE_EXPIRED state are only accessible from EMT.
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117 | * - Actual destruction of a timer can only be done at scheduling time.
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118 | */
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119 | typedef struct TMTIMER
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120 | {
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121 | /** Expire time. */
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122 | volatile uint64_t u64Expire;
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123 | /** Clock to apply to u64Expire. */
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124 | TMCLOCK enmClock;
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125 | /** Timer callback type. */
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126 | TMTIMERTYPE enmType;
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127 | /** Type specific data. */
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128 | union
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129 | {
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130 | /** TMTIMERTYPE_DEV. */
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131 | struct
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132 | {
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133 | /** Callback. */
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134 | R3PTRTYPE(PFNTMTIMERDEV) pfnTimer;
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135 | /** Device instance. */
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136 | PPDMDEVINSR3 pDevIns;
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137 | } Dev;
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138 |
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139 | /** TMTIMERTYPE_DEV. */
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140 | struct
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141 | {
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142 | /** Callback. */
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143 | R3PTRTYPE(PFNTMTIMERUSB) pfnTimer;
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144 | /** USB device instance. */
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145 | PPDMUSBINS pUsbIns;
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146 | } Usb;
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147 |
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148 | /** TMTIMERTYPE_DRV. */
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149 | struct
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150 | {
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151 | /** Callback. */
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152 | R3PTRTYPE(PFNTMTIMERDRV) pfnTimer;
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153 | /** Device instance. */
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154 | R3PTRTYPE(PPDMDRVINS) pDrvIns;
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155 | } Drv;
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156 |
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157 | /** TMTIMERTYPE_INTERNAL. */
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158 | struct
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159 | {
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160 | /** Callback. */
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161 | R3PTRTYPE(PFNTMTIMERINT) pfnTimer;
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162 | } Internal;
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163 |
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164 | /** TMTIMERTYPE_EXTERNAL. */
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165 | struct
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166 | {
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167 | /** Callback. */
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168 | R3PTRTYPE(PFNTMTIMEREXT) pfnTimer;
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169 | } External;
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170 | } u;
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171 |
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172 | /** Timer state. */
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173 | volatile TMTIMERSTATE enmState;
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174 | /** Timer relative offset to the next timer in the schedule list. */
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175 | int32_t volatile offScheduleNext;
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176 |
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177 | /** Timer relative offset to the next timer in the chain. */
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178 | int32_t offNext;
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179 | /** Timer relative offset to the previous timer in the chain. */
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180 | int32_t offPrev;
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181 |
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182 | /** Pointer to the VM the timer belongs to - R3 Ptr. */
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183 | PVMR3 pVMR3;
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184 | /** Pointer to the VM the timer belongs to - R0 Ptr. */
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185 | PVMR0 pVMR0;
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186 | /** Pointer to the VM the timer belongs to - RC Ptr. */
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187 | PVMRC pVMRC;
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188 | /** The timer frequency hint. This is 0 if not hint was given. */
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189 | uint32_t volatile uHzHint;
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190 |
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191 | /** User argument. */
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192 | RTR3PTR pvUser;
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193 | /** The critical section associated with the lock. */
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194 | R3PTRTYPE(PPDMCRITSECT) pCritSect;
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195 |
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196 | /** Pointer to the next timer in the list of created or free timers. (TM::pTimers or TM::pFree) */
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197 | PTMTIMERR3 pBigNext;
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198 | /** Pointer to the previous timer in the list of all created timers. (TM::pTimers) */
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199 | PTMTIMERR3 pBigPrev;
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200 | /** Pointer to the timer description. */
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201 | R3PTRTYPE(const char *) pszDesc;
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202 | #if HC_ARCH_BITS == 32
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203 | uint32_t padding0; /**< pad structure to multiple of 8 bytes. */
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204 | #endif
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205 | } TMTIMER;
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206 | AssertCompileMemberSize(TMTIMER, enmState, sizeof(uint32_t));
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207 |
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208 |
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209 | /**
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210 | * Updates a timer state in the correct atomic manner.
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211 | */
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212 | #if 1
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213 | # define TM_SET_STATE(pTimer, state) \
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214 | ASMAtomicWriteU32((uint32_t volatile *)&(pTimer)->enmState, state)
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215 | #else
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216 | # define TM_SET_STATE(pTimer, state) \
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217 | do { \
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218 | uint32_t uOld1 = (pTimer)->enmState; \
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219 | Log(("%s: %p: %d -> %d\n", __FUNCTION__, (pTimer), (pTimer)->enmState, state)); \
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220 | uint32_t uOld2 = ASMAtomicXchgU32((uint32_t volatile *)&(pTimer)->enmState, state); \
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221 | Assert(uOld1 == uOld2); \
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222 | } while (0)
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223 | #endif
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224 |
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225 | /**
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226 | * Tries to updates a timer state in the correct atomic manner.
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227 | */
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228 | #if 1
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229 | # define TM_TRY_SET_STATE(pTimer, StateNew, StateOld, fRc) \
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230 | (fRc) = ASMAtomicCmpXchgU32((uint32_t volatile *)&(pTimer)->enmState, StateNew, StateOld)
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231 | #else
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232 | # define TM_TRY_SET_STATE(pTimer, StateNew, StateOld, fRc) \
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233 | do { (fRc) = ASMAtomicCmpXchgU32((uint32_t volatile *)&(pTimer)->enmState, StateNew, StateOld); \
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234 | Log(("%s: %p: %d -> %d %RTbool\n", __FUNCTION__, (pTimer), StateOld, StateNew, fRc)); \
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235 | } while (0)
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236 | #endif
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237 |
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238 | /** Get the previous timer. */
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239 | #define TMTIMER_GET_PREV(pTimer) ((PTMTIMER)((pTimer)->offPrev ? (intptr_t)(pTimer) + (pTimer)->offPrev : 0))
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240 | /** Get the next timer. */
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241 | #define TMTIMER_GET_NEXT(pTimer) ((PTMTIMER)((pTimer)->offNext ? (intptr_t)(pTimer) + (pTimer)->offNext : 0))
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242 | /** Set the previous timer link. */
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243 | #define TMTIMER_SET_PREV(pTimer, pPrev) ((pTimer)->offPrev = (pPrev) ? (intptr_t)(pPrev) - (intptr_t)(pTimer) : 0)
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244 | /** Set the next timer link. */
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245 | #define TMTIMER_SET_NEXT(pTimer, pNext) ((pTimer)->offNext = (pNext) ? (intptr_t)(pNext) - (intptr_t)(pTimer) : 0)
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246 |
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247 |
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248 | /**
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249 | * A timer queue.
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250 | *
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251 | * This is allocated on the hyper heap.
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252 | */
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253 | typedef struct TMTIMERQUEUE
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254 | {
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255 | /** The cached expire time for this queue.
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256 | * Updated by EMT when scheduling the queue or modifying the head timer.
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257 | * Assigned UINT64_MAX when there is no head timer. */
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258 | uint64_t u64Expire;
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259 | /** Doubly linked list of active timers.
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260 | *
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261 | * When no scheduling is pending, this list is will be ordered by expire time (ascending).
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262 | * Access is serialized by only letting the emulation thread (EMT) do changes.
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263 | *
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264 | * The offset is relative to the queue structure.
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265 | */
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266 | int32_t offActive;
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267 | /** List of timers pending scheduling of some kind.
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268 | *
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269 | * Timer stats allowed in the list are TMTIMERSTATE_PENDING_STOPPING,
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270 | * TMTIMERSTATE_PENDING_DESTRUCTION, TMTIMERSTATE_PENDING_STOPPING_DESTRUCTION,
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271 | * TMTIMERSTATE_PENDING_RESCHEDULING and TMTIMERSTATE_PENDING_SCHEDULE.
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272 | *
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273 | * The offset is relative to the queue structure.
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274 | */
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275 | int32_t volatile offSchedule;
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276 | /** The clock for this queue. */
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277 | TMCLOCK enmClock;
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278 | /** Pad the structure up to 32 bytes. */
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279 | uint32_t au32Padding[3];
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280 | } TMTIMERQUEUE;
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281 |
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282 | /** Pointer to a timer queue. */
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283 | typedef TMTIMERQUEUE *PTMTIMERQUEUE;
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284 |
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285 | /** Get the head of the active timer list. */
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286 | #define TMTIMER_GET_HEAD(pQueue) ((PTMTIMER)((pQueue)->offActive ? (intptr_t)(pQueue) + (pQueue)->offActive : 0))
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287 | /** Set the head of the active timer list. */
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288 | #define TMTIMER_SET_HEAD(pQueue, pHead) ((pQueue)->offActive = pHead ? (intptr_t)pHead - (intptr_t)(pQueue) : 0)
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289 |
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290 |
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291 | /**
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292 | * CPU load data set.
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293 | * Mainly used by tmR3CpuLoadTimer.
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294 | */
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295 | typedef struct TMCPULOADSTATE
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296 | {
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297 | /** The percent of the period spent executing guest code. */
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298 | uint8_t cPctExecuting;
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299 | /** The percent of the period spent halted. */
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300 | uint8_t cPctHalted;
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301 | /** The percent of the period spent on other things. */
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302 | uint8_t cPctOther;
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303 | /** Explicit alignment padding */
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304 | uint8_t au8Alignment[5];
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305 |
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306 | /** Previous cNsTotal value. */
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307 | uint64_t cNsPrevTotal;
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308 | /** Previous cNsExecuting value. */
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309 | uint64_t cNsPrevExecuting;
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310 | /** Previous cNsHalted value. */
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311 | uint64_t cNsPrevHalted;
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312 | } TMCPULOADSTATE;
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313 | AssertCompileSizeAlignment(TMCPULOADSTATE, 8);
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314 | AssertCompileMemberAlignment(TMCPULOADSTATE, cNsPrevTotal, 8);
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315 | /** Pointer to a CPU load data set. */
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316 | typedef TMCPULOADSTATE *PTMCPULOADSTATE;
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317 |
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318 |
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319 | /**
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320 | * TSC mode.
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321 | *
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322 | * The main modes of how TM implements the TSC clock (TMCLOCK_TSC).
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323 | */
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324 | typedef enum TMTSCMODE
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325 | {
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326 | /** The guest TSC is an emulated, virtual TSC. */
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327 | TMTSCMODE_VIRT_TSC_EMULATED = 1,
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328 | /** The guest TSC is an offset of the real TSC. */
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329 | TMTSCMODE_REAL_TSC_OFFSET,
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330 | /** The guest TSC is dynamically derived through emulating or offsetting. */
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331 | TMTSCMODE_DYNAMIC
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332 | } TMTSCMODE;
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333 | AssertCompileSize(TMTSCMODE, sizeof(uint32_t));
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334 |
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335 |
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336 | /**
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337 | * Converts a TM pointer into a VM pointer.
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338 | * @returns Pointer to the VM structure the TM is part of.
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339 | * @param pTM Pointer to TM instance data.
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340 | */
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341 | #define TM2VM(pTM) ( (PVM)((char*)pTM - pTM->offVM) )
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342 |
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343 |
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344 | /**
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345 | * TM VM Instance data.
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346 | * Changes to this must checked against the padding of the cfgm union in VM!
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347 | */
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348 | typedef struct TM
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349 | {
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350 | /** Offset to the VM structure.
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351 | * See TM2VM(). */
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352 | RTUINT offVM;
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353 |
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354 | /** The current TSC mode of the VM.
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355 | * Config variable: Mode (string). */
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356 | TMTSCMODE enmTSCMode;
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357 | /** The original TSC mode of the VM. */
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358 | TMTSCMODE enmOriginalTSCMode;
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359 | /** Alignment padding. */
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360 | uint32_t u32Alignment0;
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361 | /** Whether the TSC is tied to the execution of code.
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362 | * Config variable: TSCTiedToExecution (bool) */
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363 | bool fTSCTiedToExecution;
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364 | /** Modifier for fTSCTiedToExecution which pauses the TSC while halting if true.
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365 | * Config variable: TSCNotTiedToHalt (bool) */
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366 | bool fTSCNotTiedToHalt;
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367 | /** Whether TM TSC mode switching is allowed at runtime. */
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368 | bool fTSCModeSwitchAllowed;
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369 | /** Whether the guest has enabled use of paravirtualized TSC. */
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370 | bool fParavirtTscEnabled;
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371 | /** The ID of the virtual CPU that normally runs the timers. */
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372 | VMCPUID idTimerCpu;
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373 |
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374 | /** The number of CPU clock ticks per second (TMCLOCK_TSC).
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375 | * Config variable: TSCTicksPerSecond (64-bit unsigned int)
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376 | * The config variable implies @c enmTSCMode would be
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377 | * TMTSCMODE_VIRT_TSC_EMULATED. */
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378 | uint64_t cTSCTicksPerSecond;
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379 | /** The TSC difference introduced by pausing the VM. */
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380 | uint64_t offTSCPause;
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381 | /** The TSC value when the last TSC was paused. */
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382 | uint64_t u64LastPausedTSC;
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383 | /** CPU TSCs ticking indicator (one for each VCPU). */
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384 | uint32_t volatile cTSCsTicking;
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385 |
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386 | /** Virtual time ticking enabled indicator (counter for each VCPU). (TMCLOCK_VIRTUAL) */
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387 | uint32_t volatile cVirtualTicking;
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388 | /** Virtual time is not running at 100%. */
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389 | bool fVirtualWarpDrive;
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390 | /** Virtual timer synchronous time ticking enabled indicator (bool). (TMCLOCK_VIRTUAL_SYNC) */
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391 | bool volatile fVirtualSyncTicking;
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392 | /** Virtual timer synchronous time catch-up active. */
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393 | bool volatile fVirtualSyncCatchUp;
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394 | /** Alignment padding. */
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395 | bool afAlignment1[1];
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396 | /** WarpDrive percentage.
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397 | * 100% is normal (fVirtualSyncNormal == true). When other than 100% we apply
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398 | * this percentage to the raw time source for the period it's been valid in,
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399 | * i.e. since u64VirtualWarpDriveStart. */
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400 | uint32_t u32VirtualWarpDrivePercentage;
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401 |
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402 | /** The offset of the virtual clock relative to it's timesource.
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403 | * Only valid if fVirtualTicking is set. */
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404 | uint64_t u64VirtualOffset;
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405 | /** The guest virtual time when fVirtualTicking is cleared. */
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406 | uint64_t u64Virtual;
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407 | /** When the Warp drive was started or last adjusted.
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408 | * Only valid when fVirtualWarpDrive is set. */
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409 | uint64_t u64VirtualWarpDriveStart;
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410 | /** The previously returned nano TS.
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411 | * This handles TSC drift on SMP systems and expired interval.
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412 | * This is a valid range u64NanoTS to u64NanoTS + 1000000000 (ie. 1sec). */
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413 | uint64_t volatile u64VirtualRawPrev;
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414 | /** The ring-3 data structure for the RTTimeNanoTS workers used by tmVirtualGetRawNanoTS. */
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415 | RTTIMENANOTSDATAR3 VirtualGetRawDataR3;
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416 | /** The ring-0 data structure for the RTTimeNanoTS workers used by tmVirtualGetRawNanoTS. */
|
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417 | RTTIMENANOTSDATAR0 VirtualGetRawDataR0;
|
---|
418 | /** The ring-0 data structure for the RTTimeNanoTS workers used by tmVirtualGetRawNanoTS. */
|
---|
419 | RTTIMENANOTSDATARC VirtualGetRawDataRC;
|
---|
420 | /** Pointer to the ring-3 tmVirtualGetRawNanoTS worker function. */
|
---|
421 | R3PTRTYPE(PFNTIMENANOTSINTERNAL) pfnVirtualGetRawR3;
|
---|
422 | /** Pointer to the ring-0 tmVirtualGetRawNanoTS worker function. */
|
---|
423 | R0PTRTYPE(PFNTIMENANOTSINTERNAL) pfnVirtualGetRawR0;
|
---|
424 | /** Pointer to the raw-mode tmVirtualGetRawNanoTS worker function. */
|
---|
425 | RCPTRTYPE(PFNTIMENANOTSINTERNAL) pfnVirtualGetRawRC;
|
---|
426 | /** Alignment. */
|
---|
427 | RTRCPTR AlignmentRCPtr;
|
---|
428 | /** The guest virtual timer synchronous time when fVirtualSyncTicking is cleared.
|
---|
429 | * When fVirtualSyncTicking is set it holds the last time returned to
|
---|
430 | * the guest (while the lock was held). */
|
---|
431 | uint64_t volatile u64VirtualSync;
|
---|
432 | /** The offset of the timer synchronous virtual clock (TMCLOCK_VIRTUAL_SYNC) relative
|
---|
433 | * to the virtual clock (TMCLOCK_VIRTUAL).
|
---|
434 | * (This is accessed by the timer thread and must be updated atomically.) */
|
---|
435 | uint64_t volatile offVirtualSync;
|
---|
436 | /** The offset into offVirtualSync that's been irrevocably given up by failed catch-up attempts.
|
---|
437 | * Thus the current lag is offVirtualSync - offVirtualSyncGivenUp. */
|
---|
438 | uint64_t offVirtualSyncGivenUp;
|
---|
439 | /** The TMCLOCK_VIRTUAL at the previous TMVirtualGetSync call when catch-up is active. */
|
---|
440 | uint64_t volatile u64VirtualSyncCatchUpPrev;
|
---|
441 | /** The current catch-up percentage. */
|
---|
442 | uint32_t volatile u32VirtualSyncCatchUpPercentage;
|
---|
443 | /** How much slack when processing timers. */
|
---|
444 | uint32_t u32VirtualSyncScheduleSlack;
|
---|
445 | /** When to stop catch-up. */
|
---|
446 | uint64_t u64VirtualSyncCatchUpStopThreshold;
|
---|
447 | /** When to give up catch-up. */
|
---|
448 | uint64_t u64VirtualSyncCatchUpGiveUpThreshold;
|
---|
449 | /** @def TM_MAX_CATCHUP_PERIODS
|
---|
450 | * The number of catchup rates. */
|
---|
451 | #define TM_MAX_CATCHUP_PERIODS 10
|
---|
452 | /** The aggressiveness of the catch-up relative to how far we've lagged behind.
|
---|
453 | * The idea is to have increasing catch-up percentage as the lag increases. */
|
---|
454 | struct TMCATCHUPPERIOD
|
---|
455 | {
|
---|
456 | uint64_t u64Start; /**< When this period starts. (u64VirtualSyncOffset). */
|
---|
457 | uint32_t u32Percentage; /**< The catch-up percent to apply. */
|
---|
458 | uint32_t u32Alignment; /**< Structure alignment */
|
---|
459 | } aVirtualSyncCatchUpPeriods[TM_MAX_CATCHUP_PERIODS];
|
---|
460 |
|
---|
461 | /** The current max timer Hz hint. */
|
---|
462 | uint32_t volatile uMaxHzHint;
|
---|
463 | /** Whether to recalulate the HzHint next time its queried. */
|
---|
464 | bool volatile fHzHintNeedsUpdating;
|
---|
465 | /** Alignment */
|
---|
466 | bool afAlignment2[3];
|
---|
467 | /** @cfgm{/TM/HostHzMax, uint32_t, Hz, 0, UINT32_MAX, 20000}
|
---|
468 | * The max host Hz frequency hint returned by TMCalcHostTimerFrequency. */
|
---|
469 | uint32_t cHostHzMax;
|
---|
470 | /** @cfgm{/TM/HostHzFudgeFactorTimerCpu, uint32_t, Hz, 0, UINT32_MAX, 111}
|
---|
471 | * The number of Hz TMCalcHostTimerFrequency adds for the timer CPU. */
|
---|
472 | uint32_t cPctHostHzFudgeFactorTimerCpu;
|
---|
473 | /** @cfgm{/TM/HostHzFudgeFactorOtherCpu, uint32_t, Hz, 0, UINT32_MAX, 110}
|
---|
474 | * The number of Hz TMCalcHostTimerFrequency adds for the other CPUs. */
|
---|
475 | uint32_t cPctHostHzFudgeFactorOtherCpu;
|
---|
476 | /** @cfgm{/TM/HostHzFudgeFactorCatchUp100, uint32_t, Hz, 0, UINT32_MAX, 300}
|
---|
477 | * The fudge factor (expressed in percent) that catch-up percentages below
|
---|
478 | * 100% is multiplied by. */
|
---|
479 | uint32_t cPctHostHzFudgeFactorCatchUp100;
|
---|
480 | /** @cfgm{/TM/HostHzFudgeFactorCatchUp200, uint32_t, Hz, 0, UINT32_MAX, 250}
|
---|
481 | * The fudge factor (expressed in percent) that catch-up percentages
|
---|
482 | * 100%-199% is multiplied by. */
|
---|
483 | uint32_t cPctHostHzFudgeFactorCatchUp200;
|
---|
484 | /** @cfgm{/TM/HostHzFudgeFactorCatchUp400, uint32_t, Hz, 0, UINT32_MAX, 200}
|
---|
485 | * The fudge factor (expressed in percent) that catch-up percentages
|
---|
486 | * 200%-399% is multiplied by. */
|
---|
487 | uint32_t cPctHostHzFudgeFactorCatchUp400;
|
---|
488 |
|
---|
489 | /** The UTC offset in ns.
|
---|
490 | * This is *NOT* for converting UTC to local time. It is for converting real
|
---|
491 | * world UTC time to VM UTC time. This feature is indented for doing date
|
---|
492 | * testing of software and similar.
|
---|
493 | * @todo Implement warpdrive on UTC. */
|
---|
494 | int64_t offUTC;
|
---|
495 |
|
---|
496 | /** Timer queues for the different clock types - R3 Ptr */
|
---|
497 | R3PTRTYPE(PTMTIMERQUEUE) paTimerQueuesR3;
|
---|
498 | /** Timer queues for the different clock types - R0 Ptr */
|
---|
499 | R0PTRTYPE(PTMTIMERQUEUE) paTimerQueuesR0;
|
---|
500 | /** Timer queues for the different clock types - RC Ptr */
|
---|
501 | RCPTRTYPE(PTMTIMERQUEUE) paTimerQueuesRC;
|
---|
502 |
|
---|
503 | /** Pointer to our RC mapping of the GIP. */
|
---|
504 | RCPTRTYPE(void *) pvGIPRC;
|
---|
505 | /** Pointer to our R3 mapping of the GIP. */
|
---|
506 | R3PTRTYPE(void *) pvGIPR3;
|
---|
507 |
|
---|
508 | /** Pointer to a singly linked list of free timers.
|
---|
509 | * This chain is using the TMTIMER::pBigNext members.
|
---|
510 | * Only accessible from the emulation thread. */
|
---|
511 | PTMTIMERR3 pFree;
|
---|
512 |
|
---|
513 | /** Pointer to a doubly linked list of created timers.
|
---|
514 | * This chain is using the TMTIMER::pBigNext and TMTIMER::pBigPrev members.
|
---|
515 | * Only accessible from the emulation thread. */
|
---|
516 | PTMTIMERR3 pCreated;
|
---|
517 |
|
---|
518 | /** The schedule timer timer handle (runtime timer).
|
---|
519 | * This timer will do frequent check on pending queue schedules and
|
---|
520 | * raise VM_FF_TIMER to pull EMTs attention to them.
|
---|
521 | */
|
---|
522 | R3PTRTYPE(PRTTIMER) pTimer;
|
---|
523 | /** Interval in milliseconds of the pTimer timer. */
|
---|
524 | uint32_t u32TimerMillies;
|
---|
525 |
|
---|
526 | /** Indicates that queues are being run. */
|
---|
527 | bool volatile fRunningQueues;
|
---|
528 | /** Indicates that the virtual sync queue is being run. */
|
---|
529 | bool volatile fRunningVirtualSyncQueue;
|
---|
530 | /** Alignment */
|
---|
531 | bool afAlignment3[2];
|
---|
532 |
|
---|
533 | /** Lock serializing access to the timer lists. */
|
---|
534 | PDMCRITSECT TimerCritSect;
|
---|
535 | /** Lock serializing access to the VirtualSync clock and the associated
|
---|
536 | * timer queue. */
|
---|
537 | PDMCRITSECT VirtualSyncLock;
|
---|
538 |
|
---|
539 | /** CPU load state for all the virtual CPUs (tmR3CpuLoadTimer). */
|
---|
540 | TMCPULOADSTATE CpuLoad;
|
---|
541 |
|
---|
542 | /** TMR3TimerQueuesDo
|
---|
543 | * @{ */
|
---|
544 | STAMPROFILE StatDoQueues;
|
---|
545 | STAMPROFILEADV aStatDoQueues[TMCLOCK_MAX];
|
---|
546 | /** @} */
|
---|
547 | /** tmSchedule
|
---|
548 | * @{ */
|
---|
549 | STAMPROFILE StatScheduleOneRZ;
|
---|
550 | STAMPROFILE StatScheduleOneR3;
|
---|
551 | STAMCOUNTER StatScheduleSetFF;
|
---|
552 | STAMCOUNTER StatPostponedR3;
|
---|
553 | STAMCOUNTER StatPostponedRZ;
|
---|
554 | /** @} */
|
---|
555 | /** Read the time
|
---|
556 | * @{ */
|
---|
557 | STAMCOUNTER StatVirtualGet;
|
---|
558 | STAMCOUNTER StatVirtualGetSetFF;
|
---|
559 | STAMCOUNTER StatVirtualSyncGet;
|
---|
560 | STAMCOUNTER StatVirtualSyncGetAdjLast;
|
---|
561 | STAMCOUNTER StatVirtualSyncGetELoop;
|
---|
562 | STAMCOUNTER StatVirtualSyncGetExpired;
|
---|
563 | STAMCOUNTER StatVirtualSyncGetLockless;
|
---|
564 | STAMCOUNTER StatVirtualSyncGetLocked;
|
---|
565 | STAMCOUNTER StatVirtualSyncGetSetFF;
|
---|
566 | STAMCOUNTER StatVirtualPause;
|
---|
567 | STAMCOUNTER StatVirtualResume;
|
---|
568 | /** @} */
|
---|
569 | /** TMTimerPoll
|
---|
570 | * @{ */
|
---|
571 | STAMCOUNTER StatPoll;
|
---|
572 | STAMCOUNTER StatPollAlreadySet;
|
---|
573 | STAMCOUNTER StatPollELoop;
|
---|
574 | STAMCOUNTER StatPollMiss;
|
---|
575 | STAMCOUNTER StatPollRunning;
|
---|
576 | STAMCOUNTER StatPollSimple;
|
---|
577 | STAMCOUNTER StatPollVirtual;
|
---|
578 | STAMCOUNTER StatPollVirtualSync;
|
---|
579 | /** @} */
|
---|
580 | /** TMTimerSet sans virtual sync timers.
|
---|
581 | * @{ */
|
---|
582 | STAMCOUNTER StatTimerSet;
|
---|
583 | STAMCOUNTER StatTimerSetOpt;
|
---|
584 | STAMPROFILE StatTimerSetRZ;
|
---|
585 | STAMPROFILE StatTimerSetR3;
|
---|
586 | STAMCOUNTER StatTimerSetStStopped;
|
---|
587 | STAMCOUNTER StatTimerSetStExpDeliver;
|
---|
588 | STAMCOUNTER StatTimerSetStActive;
|
---|
589 | STAMCOUNTER StatTimerSetStPendStop;
|
---|
590 | STAMCOUNTER StatTimerSetStPendStopSched;
|
---|
591 | STAMCOUNTER StatTimerSetStPendSched;
|
---|
592 | STAMCOUNTER StatTimerSetStPendResched;
|
---|
593 | STAMCOUNTER StatTimerSetStOther;
|
---|
594 | /** @} */
|
---|
595 | /** TMTimerSet on virtual sync timers.
|
---|
596 | * @{ */
|
---|
597 | STAMCOUNTER StatTimerSetVs;
|
---|
598 | STAMPROFILE StatTimerSetVsRZ;
|
---|
599 | STAMPROFILE StatTimerSetVsR3;
|
---|
600 | STAMCOUNTER StatTimerSetVsStStopped;
|
---|
601 | STAMCOUNTER StatTimerSetVsStExpDeliver;
|
---|
602 | STAMCOUNTER StatTimerSetVsStActive;
|
---|
603 | /** @} */
|
---|
604 | /** TMTimerSetRelative sans virtual sync timers
|
---|
605 | * @{ */
|
---|
606 | STAMCOUNTER StatTimerSetRelative;
|
---|
607 | STAMPROFILE StatTimerSetRelativeRZ;
|
---|
608 | STAMPROFILE StatTimerSetRelativeR3;
|
---|
609 | STAMCOUNTER StatTimerSetRelativeOpt;
|
---|
610 | STAMCOUNTER StatTimerSetRelativeStStopped;
|
---|
611 | STAMCOUNTER StatTimerSetRelativeStExpDeliver;
|
---|
612 | STAMCOUNTER StatTimerSetRelativeStActive;
|
---|
613 | STAMCOUNTER StatTimerSetRelativeStPendStop;
|
---|
614 | STAMCOUNTER StatTimerSetRelativeStPendStopSched;
|
---|
615 | STAMCOUNTER StatTimerSetRelativeStPendSched;
|
---|
616 | STAMCOUNTER StatTimerSetRelativeStPendResched;
|
---|
617 | STAMCOUNTER StatTimerSetRelativeStOther;
|
---|
618 | /** @} */
|
---|
619 | /** TMTimerSetRelative on virtual sync timers.
|
---|
620 | * @{ */
|
---|
621 | STAMCOUNTER StatTimerSetRelativeVs;
|
---|
622 | STAMPROFILE StatTimerSetRelativeVsRZ;
|
---|
623 | STAMPROFILE StatTimerSetRelativeVsR3;
|
---|
624 | STAMCOUNTER StatTimerSetRelativeVsStStopped;
|
---|
625 | STAMCOUNTER StatTimerSetRelativeVsStExpDeliver;
|
---|
626 | STAMCOUNTER StatTimerSetRelativeVsStActive;
|
---|
627 | /** @} */
|
---|
628 | /** TMTimerStop sans virtual sync.
|
---|
629 | * @{ */
|
---|
630 | STAMPROFILE StatTimerStopRZ;
|
---|
631 | STAMPROFILE StatTimerStopR3;
|
---|
632 | /** @} */
|
---|
633 | /** TMTimerStop on virtual sync timers.
|
---|
634 | * @{ */
|
---|
635 | STAMPROFILE StatTimerStopVsRZ;
|
---|
636 | STAMPROFILE StatTimerStopVsR3;
|
---|
637 | /** @} */
|
---|
638 | /** VirtualSync - Running and Catching Up
|
---|
639 | * @{ */
|
---|
640 | STAMCOUNTER StatVirtualSyncRun;
|
---|
641 | STAMCOUNTER StatVirtualSyncRunRestart;
|
---|
642 | STAMPROFILE StatVirtualSyncRunSlack;
|
---|
643 | STAMCOUNTER StatVirtualSyncRunStop;
|
---|
644 | STAMCOUNTER StatVirtualSyncRunStoppedAlready;
|
---|
645 | STAMCOUNTER StatVirtualSyncGiveUp;
|
---|
646 | STAMCOUNTER StatVirtualSyncGiveUpBeforeStarting;
|
---|
647 | STAMPROFILEADV StatVirtualSyncCatchup;
|
---|
648 | STAMCOUNTER aStatVirtualSyncCatchupInitial[TM_MAX_CATCHUP_PERIODS];
|
---|
649 | STAMCOUNTER aStatVirtualSyncCatchupAdjust[TM_MAX_CATCHUP_PERIODS];
|
---|
650 | /** @} */
|
---|
651 | /** TMR3VirtualSyncFF (non dedicated EMT). */
|
---|
652 | STAMPROFILE StatVirtualSyncFF;
|
---|
653 | /** The timer callback. */
|
---|
654 | STAMCOUNTER StatTimerCallbackSetFF;
|
---|
655 | STAMCOUNTER StatTimerCallback;
|
---|
656 |
|
---|
657 | /** Calls to TMCpuTickSet. */
|
---|
658 | STAMCOUNTER StatTSCSet;
|
---|
659 |
|
---|
660 | /** TSC starts and stops. */
|
---|
661 | STAMCOUNTER StatTSCPause;
|
---|
662 | STAMCOUNTER StatTSCResume;
|
---|
663 |
|
---|
664 | /** @name Reasons for refusing TSC offsetting in TMCpuTickCanUseRealTSC.
|
---|
665 | * @{ */
|
---|
666 | STAMCOUNTER StatTSCNotFixed;
|
---|
667 | STAMCOUNTER StatTSCNotTicking;
|
---|
668 | STAMCOUNTER StatTSCCatchupLE010;
|
---|
669 | STAMCOUNTER StatTSCCatchupLE025;
|
---|
670 | STAMCOUNTER StatTSCCatchupLE100;
|
---|
671 | STAMCOUNTER StatTSCCatchupOther;
|
---|
672 | STAMCOUNTER StatTSCWarp;
|
---|
673 | STAMCOUNTER StatTSCUnderflow;
|
---|
674 | STAMCOUNTER StatTSCSyncNotTicking;
|
---|
675 | /** @} */
|
---|
676 | } TM;
|
---|
677 | /** Pointer to TM VM instance data. */
|
---|
678 | typedef TM *PTM;
|
---|
679 |
|
---|
680 | /**
|
---|
681 | * TM VMCPU Instance data.
|
---|
682 | * Changes to this must checked against the padding of the tm union in VM!
|
---|
683 | */
|
---|
684 | typedef struct TMCPU
|
---|
685 | {
|
---|
686 | /** Offset to the VMCPU structure.
|
---|
687 | * See TMCPU2VM(). */
|
---|
688 | RTUINT offVMCPU;
|
---|
689 |
|
---|
690 | /** CPU timestamp ticking enabled indicator (bool). (RDTSC) */
|
---|
691 | bool fTSCTicking;
|
---|
692 | bool afAlignment0[3]; /**< alignment padding */
|
---|
693 |
|
---|
694 | /** The offset between the host tick (TSC/virtual depending on the TSC mode) and
|
---|
695 | * the guest tick. */
|
---|
696 | uint64_t offTSCRawSrc;
|
---|
697 |
|
---|
698 | /** The guest TSC when fTicking is cleared. */
|
---|
699 | uint64_t u64TSC;
|
---|
700 |
|
---|
701 | /** The last seen TSC by the guest. */
|
---|
702 | uint64_t u64TSCLastSeen;
|
---|
703 |
|
---|
704 | #ifndef VBOX_WITHOUT_NS_ACCOUNTING
|
---|
705 | /** The nanosecond timestamp of the CPU start or resume.
|
---|
706 | * This is recalculated when the VM is started so that
|
---|
707 | * cNsTotal = RTTimeNanoTS() - u64NsTsStartCpu. */
|
---|
708 | uint64_t u64NsTsStartTotal;
|
---|
709 | /** The nanosecond timestamp of the last start-execute notification. */
|
---|
710 | uint64_t u64NsTsStartExecuting;
|
---|
711 | /** The nanosecond timestamp of the last start-halt notification. */
|
---|
712 | uint64_t u64NsTsStartHalting;
|
---|
713 | /** The cNsXXX generation. */
|
---|
714 | uint32_t volatile uTimesGen;
|
---|
715 | /** Explicit alignment padding. */
|
---|
716 | uint32_t u32Alignment;
|
---|
717 | /** The number of nanoseconds total run time.
|
---|
718 | * @remarks This is updated when cNsExecuting and cNsHalted are updated. */
|
---|
719 | uint64_t cNsTotal;
|
---|
720 | /** The number of nanoseconds spent executing. */
|
---|
721 | uint64_t cNsExecuting;
|
---|
722 | /** The number of nanoseconds being halted. */
|
---|
723 | uint64_t cNsHalted;
|
---|
724 | /** The number of nanoseconds spent on other things.
|
---|
725 | * @remarks This is updated when cNsExecuting and cNsHalted are updated. */
|
---|
726 | uint64_t cNsOther;
|
---|
727 | /** The number of halts. */
|
---|
728 | uint64_t cPeriodsHalted;
|
---|
729 | /** The number of guest execution runs. */
|
---|
730 | uint64_t cPeriodsExecuting;
|
---|
731 | # if defined(VBOX_WITH_STATISTICS) || defined(VBOX_WITH_NS_ACCOUNTING_STATS)
|
---|
732 | /** Resettable version of cNsTotal. */
|
---|
733 | STAMCOUNTER StatNsTotal;
|
---|
734 | /** Resettable version of cNsExecuting. */
|
---|
735 | STAMPROFILE StatNsExecuting;
|
---|
736 | /** Long execution intervals. */
|
---|
737 | STAMPROFILE StatNsExecLong;
|
---|
738 | /** Short execution intervals . */
|
---|
739 | STAMPROFILE StatNsExecShort;
|
---|
740 | /** Tiny execution intervals . */
|
---|
741 | STAMPROFILE StatNsExecTiny;
|
---|
742 | /** Resettable version of cNsHalted. */
|
---|
743 | STAMPROFILE StatNsHalted;
|
---|
744 | /** Resettable version of cNsOther. */
|
---|
745 | STAMPROFILE StatNsOther;
|
---|
746 | # endif
|
---|
747 |
|
---|
748 | /** CPU load state for this virtual CPU (tmR3CpuLoadTimer). */
|
---|
749 | TMCPULOADSTATE CpuLoad;
|
---|
750 | #endif
|
---|
751 | } TMCPU;
|
---|
752 | /** Pointer to TM VMCPU instance data. */
|
---|
753 | typedef TMCPU *PTMCPU;
|
---|
754 |
|
---|
755 | const char *tmTimerState(TMTIMERSTATE enmState);
|
---|
756 | void tmTimerQueueSchedule(PVM pVM, PTMTIMERQUEUE pQueue);
|
---|
757 | #ifdef VBOX_STRICT
|
---|
758 | void tmTimerQueuesSanityChecks(PVM pVM, const char *pszWhere);
|
---|
759 | #endif
|
---|
760 |
|
---|
761 | int tmCpuTickPause(PVMCPU pVCpu);
|
---|
762 | int tmCpuTickPauseLocked(PVM pVM, PVMCPU pVCpu);
|
---|
763 | int tmCpuTickResume(PVM pVM, PVMCPU pVCpu);
|
---|
764 | int tmCpuTickResumeLocked(PVM pVM, PVMCPU pVCpu);
|
---|
765 |
|
---|
766 | int tmVirtualPauseLocked(PVM pVM);
|
---|
767 | int tmVirtualResumeLocked(PVM pVM);
|
---|
768 | DECLEXPORT(void) tmVirtualNanoTSBadPrev(PRTTIMENANOTSDATA pData, uint64_t u64NanoTS,
|
---|
769 | uint64_t u64DeltaPrev, uint64_t u64PrevNanoTS);
|
---|
770 | DECLEXPORT(uint64_t) tmVirtualNanoTSRediscover(PRTTIMENANOTSDATA pData);
|
---|
771 | DECLEXPORT(uint64_t) tmVirtualNanoTSBadCpuIndex(PRTTIMENANOTSDATA pData, uint16_t idApic, uint16_t iCpuSet, uint16_t iGipCpu);
|
---|
772 |
|
---|
773 | #ifdef IN_RING3
|
---|
774 | static const char * tmR3GetTSCModeNameEx(TMTSCMODE enmMode);
|
---|
775 | #endif
|
---|
776 |
|
---|
777 |
|
---|
778 | /**
|
---|
779 | * Try take the timer lock, wait in ring-3 return VERR_SEM_BUSY in R0/RC.
|
---|
780 | *
|
---|
781 | * @retval VINF_SUCCESS on success (always in ring-3).
|
---|
782 | * @retval VERR_SEM_BUSY in RC and R0 if the semaphore is busy.
|
---|
783 | *
|
---|
784 | * @param a_pVM Pointer to the VM.
|
---|
785 | *
|
---|
786 | * @remarks The virtual sync timer queue requires the virtual sync lock.
|
---|
787 | */
|
---|
788 | #define TM_LOCK_TIMERS(a_pVM) PDMCritSectEnter(&(a_pVM)->tm.s.TimerCritSect, VERR_SEM_BUSY)
|
---|
789 |
|
---|
790 | /**
|
---|
791 | * Try take the timer lock, no waiting.
|
---|
792 | *
|
---|
793 | * @retval VINF_SUCCESS on success.
|
---|
794 | * @retval VERR_SEM_BUSY if busy.
|
---|
795 | *
|
---|
796 | * @param a_pVM Pointer to the VM.
|
---|
797 | *
|
---|
798 | * @remarks The virtual sync timer queue requires the virtual sync lock.
|
---|
799 | */
|
---|
800 | #define TM_TRY_LOCK_TIMERS(a_pVM) PDMCritSectTryEnter(&(a_pVM)->tm.s.TimerCritSect)
|
---|
801 |
|
---|
802 | /** Lock the timers (sans the virtual sync queue). */
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803 | #define TM_UNLOCK_TIMERS(a_pVM) do { PDMCritSectLeave(&(a_pVM)->tm.s.TimerCritSect); } while (0)
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804 |
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805 | /** Checks that the caller owns the timer lock. */
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806 | #define TM_ASSERT_TIMER_LOCK_OWNERSHIP(a_pVM) \
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807 | Assert(PDMCritSectIsOwner(&(a_pVM)->tm.s.TimerCritSect))
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808 |
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809 | /** @} */
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810 |
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811 | RT_C_DECLS_END
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812 |
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813 | #endif
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814 |
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