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1 /*
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2 * Copyright 2010 OpenSourceCodeStewardshipFoundation
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3 *
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4 * Licensed under BSD
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5 */
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6
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7 #include <stdio.h>
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8 #include <stdlib.h>
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9 #include <malloc.h>
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10
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11 #include "VMS.h"
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12 #include "Queue_impl/BlockingQueue.h"
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13
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14
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15 #define thdAttrs NULL
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16
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17 //===========================================================================
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18 void
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19 shutdownFn( void *dummy, VirtProcr *dummy2 );
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20
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21 void
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22 create_sched_slots( MasterEnv *masterEnv );
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23
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24 void
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25 create_masterEnv();
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26
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27 void
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28 create_the_coreLoop_OS_threads();
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29
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30 pthread_mutex_t suspendLock = PTHREAD_MUTEX_INITIALIZER;
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31 pthread_cond_t suspend_cond = PTHREAD_COND_INITIALIZER;
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32
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33 //===========================================================================
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34
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35 /*Setup has two phases:
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36 * 1) Semantic layer first calls init_VMS, which creates masterEnv, and puts
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37 * the master virt procr into the work-queue, ready for first "call"
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38 * 2) Semantic layer then does its own init, which creates the seed virt
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39 * procr inside the semantic layer, ready to schedule it when
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40 * asked by the first run of the masterLoop.
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41 *
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42 *This part is bit weird because VMS really wants to be "always there", and
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43 * have applications attach and detach.. for now, this VMS is part of
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44 * the app, so the VMS system starts up as part of running the app.
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45 *
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46 *The semantic layer is isolated from the VMS internals by making the
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47 * semantic layer do setup to a state that it's ready with its
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48 * initial virt procrs, ready to schedule them to slots when the masterLoop
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49 * asks. Without this pattern, the semantic layer's setup would
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50 * have to modify slots directly to assign the initial virt-procrs, and put
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51 * them into the workQ itself, breaking the isolation completely.
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52 *
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53 *
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54 *The semantic layer creates the initial virt procr(s), and adds its
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55 * own environment to masterEnv, and fills in the pointers to
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56 * the requestHandler and slaveScheduler plug-in functions
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57 */
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58
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59 /*This allocates VMS data structures, populates the master VMSProc,
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60 * and master environment, and returns the master environment to the semantic
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61 * layer.
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62 */
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63 void
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64 VMS__init()
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65 {
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66 create_masterEnv();
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67 create_the_coreLoop_OS_threads();
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68 }
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69
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70 /*To initialize the sequential version, just don't create the threads
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71 */
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72 void
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73 VMS__init_Seq()
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74 {
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75 create_masterEnv();
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76 }
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77
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78 void
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79 create_masterEnv()
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80 { MasterEnv *masterEnv;
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81 VMSQueueStruc *workQ;
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82
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83 //Make the central work-queue
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84 _VMSWorkQ = makeVMSQ();
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85 workQ = _VMSWorkQ;
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86
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87 _VMSMasterEnv = malloc( sizeof(MasterEnv) );
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88 masterEnv = _VMSMasterEnv;
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89
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90 //create the master virtual processor
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91 masterEnv->masterVirtPr = VMS__create_procr( &masterLoop, masterEnv );
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92
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93 create_sched_slots( masterEnv );
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94
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95 masterEnv->stillRunning = FALSE;
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96 masterEnv->numToPrecede = NUM_CORES;
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97
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98 //First core loop to start up gets this, which will schedule seed Pr
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99 //TODO: debug: check address of masterVirtPr
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100 writeVMSQ( masterEnv->masterVirtPr, workQ );
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101
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102 numProcrsCreated = 1; //global counter for debugging
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103 }
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104
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105 void
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106 create_sched_slots( MasterEnv *masterEnv )
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107 { SchedSlot **schedSlots, **filledSlots;
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108 int i;
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109
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110 schedSlots = malloc( NUM_SCHED_SLOTS * sizeof(SchedSlot *) );
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111 filledSlots = malloc( NUM_SCHED_SLOTS * sizeof(SchedSlot *) );
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112 masterEnv->schedSlots = schedSlots;
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113 masterEnv->filledSlots = filledSlots;
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114
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115 for( i = 0; i < NUM_SCHED_SLOTS; i++ )
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116 {
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117 schedSlots[i] = malloc( sizeof(SchedSlot) );
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118
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119 //Set state to mean "handling requests done, slot needs filling"
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120 schedSlots[i]->workIsDone = FALSE;
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121 schedSlots[i]->needsProcrAssigned = TRUE;
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122 }
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123 }
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124
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125
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126 void
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127 create_the_coreLoop_OS_threads()
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128 {
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129 //========================================================================
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130 // Create the Threads
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131 int coreIdx, retCode;
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132
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133 //Need the threads to be created suspended, and wait for a signal
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134 // before proceeding -- gives time after creating to initialize other
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135 // stuff before the coreLoops set off.
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136 _VMSMasterEnv->setupComplete = 0;
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137
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138 //Make the threads that animate the core loops
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139 for( coreIdx=0; coreIdx < NUM_CORES; coreIdx++ )
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140 { coreLoopThdParams[coreIdx] = malloc( sizeof(ThdParams) );
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141 coreLoopThdParams[coreIdx]->coreNum = coreIdx;
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142
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143 retCode =
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144 pthread_create( &(coreLoopThdHandles[coreIdx]),
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145 thdAttrs,
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146 &coreLoop,
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147 (void *)(coreLoopThdParams[coreIdx]) );
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148 if(retCode){printf("ERROR creating thread: %d\n", retCode); exit(0);}
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149 }
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150 }
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151
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152 /*Semantic layer calls this when it want the system to start running..
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153 *
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154 *This starts the core loops running then waits for them to exit.
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155 */
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156 void
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157 VMS__start_the_work_then_wait_until_done()
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158 { int coreIdx;
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159 //Start the core loops running
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160 //===========================================================================
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161 TSCount startCount, endCount;
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162 unsigned long long count = 0, freq = 0;
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163 double runTime;
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164
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165 startCount = getTSCount();
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166
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167 //tell the core loop threads that setup is complete
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168 //get lock, to lock out any threads still starting up -- they'll see
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169 // that setupComplete is true before entering while loop, and so never
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170 // wait on the condition
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171 pthread_mutex_lock( &suspendLock );
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172 _VMSMasterEnv->setupComplete = 1;
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173 pthread_mutex_unlock( &suspendLock );
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174 pthread_cond_broadcast( &suspend_cond );
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175
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176
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177 //wait for all to complete
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178 for( coreIdx=0; coreIdx < NUM_CORES; coreIdx++ )
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179 {
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180 pthread_join( coreLoopThdHandles[coreIdx], NULL );
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181 }
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182
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183 //NOTE: do not clean up VMS env here -- semantic layer has to have
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184 // a chance to clean up its environment first, then do a call to free
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185 // the Master env and rest of VMS locations
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186
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187
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188 endCount = getTSCount();
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189 count = endCount - startCount;
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190
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191 runTime = (double)count / (double)TSCOUNT_FREQ;
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192
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193 printf("\n Time startup to shutdown: %f\n", runTime); fflush( stdin );
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194 }
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195
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196 /*Only difference between version with an OS thread pinned to each core and
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197 * the sequential version of VMS is VMS__init_Seq, this, and coreLoop_Seq.
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198 */
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199 void
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200 VMS__start_the_work_then_wait_until_done_Seq()
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201 {
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202 //Instead of un-suspending threads, just call the one and only
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203 // core loop (sequential version), in the main thread.
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204 coreLoop_Seq( NULL );
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205
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206 }
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207
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208
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209
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210 /*Create stack, then create __cdecl structure on it and put initialData and
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211 * pointer to the new structure instance into the parameter positions on
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212 * the stack
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213 *Then put function pointer into nextInstrPt -- the stack is setup in std
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214 * call structure, so jumping to function ptr is same as a GCC generated
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215 * function call
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216 *No need to save registers on old stack frame, because there's no old
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217 * animator state to return to --
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218 *
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219 */
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220 VirtProcr *
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221 VMS__create_procr( VirtProcrFnPtr fnPtr, void *initialData )
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222 { VirtProcr *newPr;
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223 char *stackLocs, *stackPtr;
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224
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225 newPr = malloc( sizeof(VirtProcr) );
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226 newPr->procrID = numProcrsCreated++;
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227 newPr->nextInstrPt = fnPtr;
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228 newPr->initialData = initialData;
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229
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230 //fnPtr takes two params -- void *initData & void *animProcr
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231 //alloc stack locations, make stackPtr be the highest addr minus room
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232 // for 2 params + return addr. Return addr (NULL) is in loc pointed to
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233 // by stackPtr, initData at stackPtr + 4 bytes, animatingPr just above
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234 stackLocs = malloc( VIRT_PROCR_STACK_SIZE );
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235 if(stackLocs == 0)
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236 {perror("malloc stack"); exit(1);}
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237 newPr->startOfStack = stackLocs;
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238 stackPtr = ( (char *)stackLocs + VIRT_PROCR_STACK_SIZE - 0x10 );
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239 //setup __cdecl on stack -- coreloop will switch to stackPtr before jmp
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240 *( (int *)stackPtr + 2 ) = (int) newPr; //rightmost param -- 32bit pointer
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241 *( (int *)stackPtr + 1 ) = (int) initialData; //next param to left
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242 newPr->stackPtr = stackPtr; //core loop will switch to this, then
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243 newPr->framePtr = stackPtr; //suspend loop will save new stack & frame ptr
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244
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245 return newPr;
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246 }
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247
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248
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249 /*there is a label inside this function -- save the addr of this label in
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250 * the callingPr struc, as the pick-up point from which to start the next
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251 * work-unit for that procr. If turns out have to save registers, then
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252 * save them in the procr struc too. Then do assembly jump to the CoreLoop's
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253 * "done with work-unit" label. The procr struc is in the request in the
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254 * slave that animated the just-ended work-unit, so all the state is saved
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255 * there, and will get passed along, inside the request handler, to the
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256 * next work-unit for that procr.
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257 */
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258 void
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259 VMS__suspend_procr( VirtProcr *callingPr )
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260 { void *jmpPt, *stackPtrAddr, *framePtrAddr, *coreLoopStackPtr;
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261 void *coreLoopFramePtr;
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262
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263 //The request to master will cause this suspended virt procr to get
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264 // scheduled again at some future point -- to resume, core loop jumps
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265 // to the resume point (below), which causes restore of saved regs and
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266 // "return" from this call.
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267 callingPr->nextInstrPt = &&ResumePt;
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268
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269 //return ownership of the virt procr and sched slot to Master virt pr
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270 callingPr->schedSlot->workIsDone = TRUE;
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271 // coreIdx = callingPr->coreAnimatedBy;
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272
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273 stackPtrAddr = &(callingPr->stackPtr);
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274 framePtrAddr = &(callingPr->framePtr);
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275
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276 jmpPt = callingPr->coreLoopStartPt;
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277 coreLoopFramePtr = callingPr->coreLoopFramePtr;//need this only
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278 coreLoopStackPtr = callingPr->coreLoopStackPtr;//shouldn't need -- safety
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279
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280 //Eclipse's compilation sequence complains -- so break into two
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281 // separate in-line assembly pieces
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282 //Save the virt procr's stack and frame ptrs,
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283 asm volatile("movl %0, %%eax; \
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284 movl %%esp, (%%eax); \
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285 movl %1, %%eax; \
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286 movl %%ebp, (%%eax) "\
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287 /* outputs */ : "=g" (stackPtrAddr), "=g" (framePtrAddr) \
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288 /* inputs */ : \
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289 /* clobber */ : "%eax" \
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290 );
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291
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292 //restore coreloop's frame ptr, then jump back to "start" of core loop
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293 //Note, GCC compiles to assembly that saves esp and ebp in the stack
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294 // frame -- so have to explicitly do assembly that saves to memory
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295 asm volatile("movl %0, %%eax; \
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296 movl %1, %%esp; \
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297 movl %2, %%ebp; \
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298 jmp %%eax " \
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299 /* outputs */ : \
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300 /* inputs */ : "m" (jmpPt), "m"(coreLoopStackPtr), "m"(coreLoopFramePtr)\
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301 /* clobber */ : "memory", "%eax", "%ebx", "%ecx", "%edx", "%edi","%esi" \
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302 ); //list everything as clobbered to force GCC to save all
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303 // live vars that are in regs on stack before this
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304 // assembly, so that stack pointer is correct, before jmp
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305
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306 ResumePt:
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307 return;
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308 }
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309
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310
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311
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312 /*This is equivalent to "jump back to core loop" -- it's mainly only used
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313 * just after adding dissipate request to a processor -- so the semantic
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314 * layer is the only place it will be seen and/or used.
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315 *
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316 *It does almost the same thing as suspend, except don't need to save the
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317 * stack nor set the nextInstrPt
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318 *
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319 *As of June 30, 2010 just implementing as a call to suspend -- just sugar
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320 */
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321 void
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322 VMS__return_from_fn( VirtProcr *animatingPr )
|
|
Me@8
|
323 {
|
|
Me@22
|
324 VMS__suspend_procr( animatingPr );
|
|
Me@1
|
325 }
|
|
Me@1
|
326
|
|
Me@22
|
327
|
|
Me@22
|
328 /*Not sure yet the form going to put "dissipate" in, so this is the third
|
|
Me@22
|
329 * possibility -- the semantic layer can just make a macro that looks like
|
|
Me@22
|
330 * a call to its name, then expands to a call to this.
|
|
Me@8
|
331 *
|
|
Me@22
|
332 *As of June 30, 2010 this looks like the top choice..
|
|
Me@8
|
333 *
|
|
Me@22
|
334 *This adds a request to dissipate, then suspends the processor so that the
|
|
Me@22
|
335 * request handler will receive the request. The request handler is what
|
|
Me@22
|
336 * does the work of freeing memory and removing the processor from the
|
|
Me@22
|
337 * semantic environment's data structures.
|
|
Me@22
|
338 *The request handler also is what figures out when to shutdown the VMS
|
|
Me@22
|
339 * system -- which causes all the core loop threads to die, and returns from
|
|
Me@22
|
340 * the call that started up VMS to perform the work.
|
|
Me@22
|
341 *
|
|
Me@22
|
342 *This form is a bit misleading to understand if one is trying to figure out
|
|
Me@22
|
343 * how VMS works -- it looks like a normal function call, but inside it
|
|
Me@22
|
344 * sends a request to the request handler and suspends the processor, which
|
|
Me@22
|
345 * jumps out of the VMS__dissipate_procr function, and out of all nestings
|
|
Me@22
|
346 * above it, transferring the work of dissipating to the request handler,
|
|
Me@22
|
347 * which then does the actual work -- causing the processor that animated
|
|
Me@22
|
348 * the call of this function to disappear and the "hanging" state of this
|
|
Me@22
|
349 * function to just poof into thin air -- the virtual processor's trace
|
|
Me@22
|
350 * never returns from this call, but instead the virtual processor's trace
|
|
Me@22
|
351 * gets suspended in this call and all the virt processor's state disap-
|
|
Me@22
|
352 * pears -- making that suspend the last thing in the virt procr's trace.
|
|
Me@8
|
353 */
|
|
Me@8
|
354 void
|
|
Me@22
|
355 VMS__dissipate_procr( VirtProcr *procrToDissipate )
|
|
Me@22
|
356 { VMSReqst *req;
|
|
Me@22
|
357
|
|
Me@22
|
358 req = malloc( sizeof(VMSReqst) );
|
|
Me@22
|
359 // req->virtProcrFrom = callingPr;
|
|
Me@22
|
360 req->reqType = dissipate;
|
|
Me@22
|
361 req->nextReqst = procrToDissipate->requests;
|
|
Me@22
|
362 procrToDissipate->requests = req;
|
|
Me@22
|
363
|
|
Me@22
|
364 VMS__suspend_procr( procrToDissipate );
|
|
Me@22
|
365 }
|
|
Me@22
|
366
|
|
Me@22
|
367
|
|
Me@22
|
368 /*This inserts the semantic-layer's request data into standard VMS carrier
|
|
Me@22
|
369 */
|
|
Me@22
|
370 inline void
|
|
Me@24
|
371 VMS__add_sem_request( void *semReqData, VirtProcr *callingPr )
|
|
Me@22
|
372 { VMSReqst *req;
|
|
Me@22
|
373
|
|
Me@22
|
374 req = malloc( sizeof(VMSReqst) );
|
|
Me@22
|
375 // req->virtProcrFrom = callingPr;
|
|
Me@22
|
376 req->reqType = semantic;
|
|
Me@22
|
377 req->semReqData = semReqData;
|
|
Me@22
|
378 req->nextReqst = callingPr->requests;
|
|
Me@22
|
379 callingPr->requests = req;
|
|
Me@22
|
380 }
|
|
Me@22
|
381
|
|
Me@22
|
382
|
|
Me@22
|
383
|
|
Me@22
|
384 //TODO: add a semantic-layer supplied "freer" for the semantic-data portion
|
|
Me@22
|
385 // of a request -- IE call with both a virt procr and a fn-ptr to request
|
|
Me@22
|
386 // freer (or maybe put request freer as a field in virt procr?)
|
|
Me@22
|
387 void
|
|
Me@22
|
388 VMS__remove_and_free_top_request( VirtProcr *procrWithReq )
|
|
Me@22
|
389 { VMSReqst *req;
|
|
Me@22
|
390
|
|
Me@22
|
391 req = procrWithReq->requests;
|
|
Me@29
|
392 if( req == NULL ) return;
|
|
Me@22
|
393 procrWithReq->requests = procrWithReq->requests->nextReqst;
|
|
Me@29
|
394 VMS__free_request( req );
|
|
Me@22
|
395 }
|
|
Me@22
|
396
|
|
Me@24
|
397
|
|
Me@24
|
398 //TODO: add a semantic-layer supplied "freer" for the semantic-data portion
|
|
Me@24
|
399 // of a request -- IE call with both a virt procr and a fn-ptr to request
|
|
Me@24
|
400 // freer (also maybe put sem request freer as a field in virt procr?)
|
|
Me@26
|
401 //VMSHW relies right now on this only freeing VMS layer of request -- the
|
|
Me@26
|
402 // semantic portion of request is alloc'd and freed by request handler
|
|
Me@22
|
403 void
|
|
Me@24
|
404 VMS__free_request( VMSReqst *req )
|
|
Me@24
|
405 {
|
|
Me@24
|
406 free( req );
|
|
Me@24
|
407 }
|
|
Me@24
|
408
|
|
Me@24
|
409 VMSReqst *
|
|
Me@24
|
410 VMS__take_top_request_from( VirtProcr *procrWithReq )
|
|
Me@24
|
411 { VMSReqst *req;
|
|
Me@24
|
412
|
|
Me@24
|
413 req = procrWithReq->requests;
|
|
Me@24
|
414 if( req == NULL ) return req;
|
|
Me@24
|
415
|
|
Me@24
|
416 procrWithReq->requests = procrWithReq->requests->nextReqst;
|
|
Me@24
|
417 return req;
|
|
Me@24
|
418 }
|
|
Me@24
|
419
|
|
Me@24
|
420 inline int
|
|
Me@24
|
421 VMS__isSemanticReqst( VMSReqst *req )
|
|
Me@22
|
422 {
|
|
Me@24
|
423 return ( req->reqType == semantic );
|
|
Me@24
|
424 }
|
|
Me@22
|
425
|
|
Me@24
|
426
|
|
Me@24
|
427 inline void *
|
|
Me@24
|
428 VMS__take_sem_reqst_from( VMSReqst *req )
|
|
Me@24
|
429 {
|
|
Me@24
|
430 return req->semReqData;
|
|
Me@24
|
431 }
|
|
Me@24
|
432
|
|
Me@24
|
433 inline int
|
|
Me@24
|
434 VMS__isDissipateReqst( VMSReqst *req )
|
|
Me@24
|
435 {
|
|
Me@24
|
436 return ( req->reqType == dissipate );
|
|
Me@24
|
437 }
|
|
Me@24
|
438
|
|
Me@24
|
439 inline int
|
|
Me@24
|
440 VMS__isCreateReqst( VMSReqst *req )
|
|
Me@24
|
441 {
|
|
Me@24
|
442 return ( req->reqType == regCreated );
|
|
Me@24
|
443 }
|
|
Me@24
|
444
|
|
Me@24
|
445 void
|
|
Me@24
|
446 VMS__send_register_new_procr_request(VirtProcr *newPr, VirtProcr *reqstingPr)
|
|
Me@24
|
447 { VMSReqst *req;
|
|
Me@24
|
448
|
|
Me@24
|
449 req = malloc( sizeof(VMSReqst) );
|
|
Me@24
|
450 req->reqType = regCreated;
|
|
Me@24
|
451 req->semReqData = newPr;
|
|
Me@24
|
452 req->nextReqst = reqstingPr->requests;
|
|
Me@24
|
453 reqstingPr->requests = req;
|
|
Me@24
|
454
|
|
Me@24
|
455 VMS__suspend_procr( reqstingPr );
|
|
Me@22
|
456 }
|
|
Me@22
|
457
|
|
Me@22
|
458
|
|
Me@22
|
459
|
|
Me@24
|
460 /*This must be called by the request handler plugin -- it cannot be called
|
|
Me@24
|
461 * from the semantic library "dissipate processor" function -- instead, the
|
|
Me@24
|
462 * semantic layer has to generate a request for the plug-in to call this
|
|
Me@24
|
463 * function.
|
|
Me@24
|
464 *The reason is that this frees the virtual processor's stack -- which is
|
|
Me@24
|
465 * still in use inside semantic library calls!
|
|
Me@24
|
466 *
|
|
Me@24
|
467 *This frees or recycles all the state owned by and comprising the VMS
|
|
Me@24
|
468 * portion of the animating virtual procr. The request handler must first
|
|
Me@24
|
469 * free any semantic data created for the processor that didn't use the
|
|
Me@24
|
470 * VMS_malloc mechanism. Then it calls this, which first asks the malloc
|
|
Me@24
|
471 * system to disown any state that did use VMS_malloc, and then frees the
|
|
Me@24
|
472 * statck and the processor-struct itself.
|
|
Me@24
|
473 *If the dissipated processor is the sole (remaining) owner of VMS__malloc'd
|
|
Me@24
|
474 * state, then that state gets freed (or sent to recycling) as a side-effect
|
|
Me@24
|
475 * of dis-owning it.
|
|
Me@24
|
476 */
|
|
Me@24
|
477 void
|
|
Me@29
|
478 VMS__handle_dissipate_reqst( VirtProcr *animatingPr )
|
|
Me@24
|
479 {
|
|
Me@24
|
480 //dis-own all locations owned by this processor, causing to be freed
|
|
Me@24
|
481 // any locations that it is (was) sole owner of
|
|
Me@29
|
482 //TODO: implement VMS__malloc system, including "give up ownership"
|
|
Me@24
|
483
|
|
Me@24
|
484 //The dissipate request might still be attached, so remove and free it
|
|
Me@24
|
485 VMS__remove_and_free_top_request( animatingPr );
|
|
Me@24
|
486
|
|
Me@24
|
487 //NOTE: initialData was given to the processor, so should either have
|
|
Me@24
|
488 // been alloc'd with VMS__malloc, or freed by the level above animPr.
|
|
Me@24
|
489 //So, all that's left to free here is the stack and the VirtProcr struc
|
|
Me@24
|
490 // itself
|
|
Me@24
|
491 free( animatingPr->startOfStack );
|
|
Me@24
|
492 free( animatingPr );
|
|
Me@24
|
493 }
|
|
Me@24
|
494
|
|
Me@24
|
495
|
|
Me@29
|
496 //TODO: re-architect so that have clean separation between request handler
|
|
Me@29
|
497 // and master loop, for dissipate, create, shutdown, and other non-semantic
|
|
Me@29
|
498 // requests. Issue is chain: one removes requests from AppVP, one dispatches
|
|
Me@29
|
499 // on type of request, and one handles each type.. but some types require
|
|
Me@29
|
500 // action from both request handler and master loop -- maybe just give the
|
|
Me@29
|
501 // request handler calls like: VMS__handle_X_request_type
|
|
Me@24
|
502
|
|
Me@29
|
503 void
|
|
Me@29
|
504 endOSThreadFn( void *initData, VirtProcr *animatingPr );
|
|
Me@29
|
505
|
|
Me@29
|
506 /*This is called by the semantic layer's request handler when it decides its
|
|
Me@29
|
507 * time to shut down the VMS system. Calling this causes the core loop OS
|
|
Me@29
|
508 * threads to exit, which unblocks the entry-point function that started up
|
|
Me@29
|
509 * VMS, and allows it to grab the result and return to the original single-
|
|
Me@29
|
510 * threaded application.
|
|
Me@22
|
511 *
|
|
Me@29
|
512 *The _VMSMasterEnv is needed by this shut down function, so the create-seed-
|
|
Me@29
|
513 * and-wait function has to free a bunch of stuff after it detects the
|
|
Me@29
|
514 * threads have all died: the masterEnv, the thread-related locations,
|
|
Me@29
|
515 * masterVP any AppVPs that might still be allocated and sitting in the
|
|
Me@29
|
516 * semantic environment, or have been orphaned in the _VMSWorkQ.
|
|
Me@29
|
517 *
|
|
Me@29
|
518 *NOTE: the semantic plug-in is expected to use VMS__malloc_to to get all the
|
|
Me@29
|
519 * locations it needs, and give ownership to masterVP. Then, they will be
|
|
Me@29
|
520 * automatically freed when the masterVP is dissipated. (This happens after
|
|
Me@29
|
521 * the core loop threads have all exited)
|
|
Me@22
|
522 *
|
|
Me@29
|
523 *In here,create one core-loop shut-down processor for each core loop and put
|
|
Me@29
|
524 * them all directly into the workQ.
|
|
Me@29
|
525 *Note, this function can ONLY be called after the semantic environment no
|
|
Me@29
|
526 * longer cares if AppVPs get animated after the point this is called. In
|
|
Me@29
|
527 * other words, this can be used as an abort, or else it should only be
|
|
Me@29
|
528 * called when all AppVPs have finished dissipate requests -- only at that
|
|
Me@29
|
529 * point is it sure that all results have completed.
|
|
Me@22
|
530 */
|
|
Me@22
|
531 void
|
|
Me@29
|
532 VMS__handle_shutdown_reqst( void *dummy, VirtProcr *animatingPr )
|
|
Me@8
|
533 { int coreIdx;
|
|
Me@14
|
534 VirtProcr *shutDownPr;
|
|
Me@26
|
535 VMSQueueStruc *workQ = _VMSWorkQ;
|
|
Me@22
|
536
|
|
Me@29
|
537 //create the shutdown processors, one for each core loop -- put them
|
|
Me@29
|
538 // directly into _VMSWorkQ -- each core will die when gets one, so
|
|
Me@29
|
539 // the system distributes them evenly itself.
|
|
Me@8
|
540 for( coreIdx=0; coreIdx < NUM_CORES; coreIdx++ )
|
|
Me@8
|
541 {
|
|
Me@29
|
542 shutDownPr = VMS__create_procr( &endOSThreadFn, NULL );
|
|
Me@26
|
543 writeVMSQ( shutDownPr, workQ );
|
|
Me@8
|
544 }
|
|
Me@22
|
545
|
|
Me@12
|
546 }
|
|
Me@12
|
547
|
|
Me@12
|
548
|
|
Me@29
|
549 /*Am trying to be cute, avoiding IF statement in coreLoop that checks for
|
|
Me@29
|
550 * a special shutdown procr. Ended up with extra-complex shutdown sequence.
|
|
Me@29
|
551 *This function has the sole purpose of setting the stack and framePtr
|
|
Me@29
|
552 * to the coreLoop's stack and framePtr.. it does that then jumps to the
|
|
Me@29
|
553 * core loop's shutdown point -- might be able to just call Pthread_exit
|
|
Me@29
|
554 * from here, but going back to the pthread's stack and setting everything
|
|
Me@29
|
555 * up just as if it never jumped out, before calling pthread_exit.
|
|
Me@29
|
556 *The end-point of core loop will free the stack and so forth of the
|
|
Me@29
|
557 * processor that animates this function, (this fn is transfering the
|
|
Me@29
|
558 * animator of the AppVP that is in turn animating this function over
|
|
Me@29
|
559 * to core loop function -- note that this slices out a level of virtual
|
|
Me@29
|
560 * processors).
|
|
Me@29
|
561 */
|
|
Me@29
|
562 void
|
|
Me@29
|
563 endOSThreadFn( void *initData, VirtProcr *animatingPr )
|
|
Me@29
|
564 { void *jmpPt, *coreLoopStackPtr, *coreLoopFramePtr;
|
|
Me@29
|
565
|
|
Me@29
|
566 jmpPt = _VMSMasterEnv->coreLoopEndPt;
|
|
Me@29
|
567 coreLoopStackPtr = animatingPr->coreLoopStackPtr;
|
|
Me@29
|
568 coreLoopFramePtr = animatingPr->coreLoopFramePtr;
|
|
Me@29
|
569
|
|
Me@29
|
570
|
|
Me@29
|
571 asm volatile("movl %0, %%eax; \
|
|
Me@29
|
572 movl %1, %%esp; \
|
|
Me@29
|
573 movl %2, %%ebp; \
|
|
Me@29
|
574 jmp %%eax " \
|
|
Me@29
|
575 /* outputs */ : \
|
|
Me@29
|
576 /* inputs */ : "m" (jmpPt), "m"(coreLoopStackPtr), "m"(coreLoopFramePtr)\
|
|
Me@29
|
577 /* clobber */ : "memory", "%eax", "%ebx", "%ecx", "%edx", "%edi","%esi" \
|
|
Me@29
|
578 );
|
|
Me@29
|
579 }
|
|
Me@29
|
580
|
|
Me@29
|
581
|
|
Me@29
|
582
|
|
Me@29
|
583 /*This is called has to free anything allocated during VMS_init, and any other alloc'd
|
|
Me@24
|
584 * locations that might be left over.
|
|
Me@24
|
585 */
|
|
Me@24
|
586 void
|
|
Me@29
|
587 VMS__cleanup_after_shutdown()
|
|
Me@24
|
588 { int i;
|
|
Me@24
|
589
|
|
Me@24
|
590 free( _VMSWorkQ );
|
|
Me@24
|
591 free( _VMSMasterEnv->filledSlots );
|
|
Me@24
|
592 for( i = 0; i < NUM_SCHED_SLOTS; i++ )
|
|
Me@24
|
593 {
|
|
Me@24
|
594 free( _VMSMasterEnv->schedSlots[i] );
|
|
Me@24
|
595 }
|
|
Me@24
|
596
|
|
Me@24
|
597 free( _VMSMasterEnv->schedSlots);
|
|
Me@29
|
598 VMS__handle_dissipate_reqst( _VMSMasterEnv->masterVirtPr );
|
|
Me@24
|
599
|
|
Me@24
|
600 free( _VMSMasterEnv );
|
|
Me@24
|
601 }
|
|
Me@24
|
602
|
|
Me@24
|
603
|
|
Me@24
|
604 //===========================================================================
|
|
Me@12
|
605
|
|
Me@12
|
606 inline TSCount getTSCount()
|
|
Me@12
|
607 { unsigned int low, high;
|
|
Me@12
|
608 TSCount out;
|
|
Me@12
|
609
|
|
Me@12
|
610 saveTimeStampCountInto( low, high );
|
|
Me@12
|
611 out = high;
|
|
Me@12
|
612 out = (out << 32) + low;
|
|
Me@12
|
613 return out;
|
|
Me@12
|
614 }
|
|
Me@12
|
615
|
