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