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1 /*
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2 * Copyright 2010 OpenSourceStewardshipFoundation
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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 <string.h>
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10 #include <malloc.h>
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11 #include <sys/time.h>
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12
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13 #include "VMS.h"
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14 #include "SwitchAnimators.h"
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15 #include "Queue_impl/BlockingQueue.h"
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16 #include "Histogram/Histogram.h"
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17
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18
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19 #define thdAttrs NULL
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20
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21 //===========================================================================
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22 void
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23 shutdownFn( void *dummy, VirtProcr *dummy2 );
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24
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25 SchedSlot **
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26 create_sched_slots();
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27
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28 void
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29 create_masterEnv();
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30
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31 void
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32 create_the_coreLoop_OS_threads();
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33
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34 MallocProlog *
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35 create_free_list();
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36
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37 void
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38 endOSThreadFn( void *initData, VirtProcr *animatingPr );
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39
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40 pthread_mutex_t suspendLock = PTHREAD_MUTEX_INITIALIZER;
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41 pthread_cond_t suspend_cond = PTHREAD_COND_INITIALIZER;
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42
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43 //===========================================================================
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44
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45 /*Setup has two phases:
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46 * 1) Semantic layer first calls init_VMS, which creates masterEnv, and puts
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47 * the master virt procr into the work-queue, ready for first "call"
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48 * 2) Semantic layer then does its own init, which creates the seed virt
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49 * procr inside the semantic layer, ready to schedule it when
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50 * asked by the first run of the masterLoop.
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51 *
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52 *This part is bit weird because VMS really wants to be "always there", and
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53 * have applications attach and detach.. for now, this VMS is part of
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54 * the app, so the VMS system starts up as part of running the app.
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55 *
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56 *The semantic layer is isolated from the VMS internals by making the
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57 * semantic layer do setup to a state that it's ready with its
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58 * initial virt procrs, ready to schedule them to slots when the masterLoop
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59 * asks. Without this pattern, the semantic layer's setup would
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60 * have to modify slots directly to assign the initial virt-procrs, and put
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61 * them into the readyToAnimateQ itself, breaking the isolation completely.
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62 *
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63 *
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64 *The semantic layer creates the initial virt procr(s), and adds its
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65 * own environment to masterEnv, and fills in the pointers to
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66 * the requestHandler and slaveScheduler plug-in functions
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67 */
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68
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69 /*This allocates VMS data structures, populates the master VMSProc,
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70 * and master environment, and returns the master environment to the semantic
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71 * layer.
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72 */
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73 void
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74 VMS__init()
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75 {
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76 create_masterEnv();
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77 create_the_coreLoop_OS_threads();
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78 }
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79
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80 #ifdef SEQUENTIAL
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81
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82 /*To initialize the sequential version, just don't create the threads
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83 */
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84 void
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85 VMS__init_Seq()
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86 {
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87 create_masterEnv();
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88 }
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89
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90 #endif
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91
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92 void
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93 create_masterEnv()
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94 { MasterEnv *masterEnv;
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95 VMSQueueStruc **readyToAnimateQs;
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96 int coreIdx;
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97 VirtProcr **masterVPs;
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98 SchedSlot ***allSchedSlots; //ptr to array of ptrs
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99
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100
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101 //Make the master env, which holds everything else
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102 _VMSMasterEnv = malloc( sizeof(MasterEnv) );
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103
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104 //Very first thing put into the master env is the free-list, seeded
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105 // with a massive initial chunk of memory.
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106 //After this, all other mallocs are VMS__malloc.
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107 _VMSMasterEnv->freeListHead = VMS_ext__create_free_list();
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108
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109
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110 //============================= MEASUREMENT STUFF ========================
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111 #ifdef MEAS__TIME_MALLOC
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112 _VMSMasterEnv->mallocTimeHist = makeFixedBinHistExt( 50, 0, 100,
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113 "malloc time hist");
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114 _VMSMasterEnv->freeTimeHist = makeFixedBinHistExt( 50, 0, 100,
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115 "free time hist");
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116 #endif
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117 #ifdef MEAS__TIME_PLUGIN
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118 _VMSMasterEnv->reqHdlrLowTimeHist = makeFixedBinHistExt( 50, 0, 10,
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119 "plugin low time hist");
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120 _VMSMasterEnv->reqHdlrHighTimeHist = makeFixedBinHistExt( 50, 0, 100,
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121 "plugin high time hist");
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122 #endif
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123 //========================================================================
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124
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125 //===================== Only VMS__malloc after this ====================
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126 masterEnv = (MasterEnv*)_VMSMasterEnv;
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127
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128 //Make a readyToAnimateQ for each core loop
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129 readyToAnimateQs = VMS__malloc( NUM_CORES * sizeof(VMSQueueStruc *) );
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130 masterVPs = VMS__malloc( NUM_CORES * sizeof(VirtProcr *) );
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131
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132 //One array for each core, 3 in array, core's masterVP scheds all
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133 allSchedSlots = VMS__malloc( NUM_CORES * sizeof(SchedSlot *) );
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134
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135 _VMSMasterEnv->numProcrsCreated = 0; //used by create procr
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136 for( coreIdx = 0; coreIdx < NUM_CORES; coreIdx++ )
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137 {
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138 readyToAnimateQs[ coreIdx ] = makeVMSQ();
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139
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140 //Q: should give masterVP core-specific info as its init data?
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141 masterVPs[ coreIdx ] = VMS__create_procr( &masterLoop, masterEnv );
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142 masterVPs[ coreIdx ]->coreAnimatedBy = coreIdx;
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143 allSchedSlots[ coreIdx ] = create_sched_slots(); //makes for one core
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144 _VMSMasterEnv->numMasterInARow[ coreIdx ] = 0;
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145 _VMSMasterEnv->workStealingGates[ coreIdx ] = NULL;
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146 }
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147 _VMSMasterEnv->readyToAnimateQs = readyToAnimateQs;
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148 _VMSMasterEnv->masterVPs = masterVPs;
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149 _VMSMasterEnv->masterLock = UNLOCKED;
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150 _VMSMasterEnv->allSchedSlots = allSchedSlots;
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151 _VMSMasterEnv->workStealingLock = UNLOCKED;
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152
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153
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154 //Aug 19, 2010: no longer need to place initial masterVP into queue
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155 // because coreLoop now controls -- animates its masterVP when no work
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156
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157
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158 //============================= MEASUREMENT STUFF ========================
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159 #ifdef STATS__TURN_ON_PROBES
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160 _VMSMasterEnv->dynIntervalProbesInfo =
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161 makePrivDynArrayOfSize( (void***)&(_VMSMasterEnv->intervalProbes), 200);
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162
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163 _VMSMasterEnv->probeNameHashTbl = makeHashTable( 1000, &VMS__free );
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164
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165 //put creation time directly into master env, for fast retrieval
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166 struct timeval timeStamp;
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167 gettimeofday( &(timeStamp), NULL);
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168 _VMSMasterEnv->createPtInSecs =
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169 timeStamp.tv_sec +(timeStamp.tv_usec/1000000.0);
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170 #endif
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171 #ifdef MEAS__TIME_MASTER_LOCK
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172 _VMSMasterEnv->masterLockLowTimeHist = makeFixedBinHist( 50, 0, 2,
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173 "master lock low time hist");
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174 _VMSMasterEnv->masterLockHighTimeHist = makeFixedBinHist( 50, 0, 100,
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175 "master lock high time hist");
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176 #endif
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177
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178 MakeTheMeasHists
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179 //========================================================================
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180
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181 }
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182
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183 SchedSlot **
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184 create_sched_slots()
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185 { SchedSlot **schedSlots;
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186 int i;
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187
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188 schedSlots = VMS__malloc( NUM_SCHED_SLOTS * sizeof(SchedSlot *) );
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189
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190 for( i = 0; i < NUM_SCHED_SLOTS; i++ )
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191 {
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192 schedSlots[i] = VMS__malloc( sizeof(SchedSlot) );
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193
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194 //Set state to mean "handling requests done, slot needs filling"
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195 schedSlots[i]->workIsDone = FALSE;
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196 schedSlots[i]->needsProcrAssigned = TRUE;
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197 }
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198 return schedSlots;
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199 }
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200
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201
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202 void
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203 freeSchedSlots( SchedSlot **schedSlots )
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204 { int i;
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205 for( i = 0; i < NUM_SCHED_SLOTS; i++ )
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206 {
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207 VMS__free( schedSlots[i] );
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208 }
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209 VMS__free( schedSlots );
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210 }
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211
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212
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213 void
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214 create_the_coreLoop_OS_threads()
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215 {
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216 //========================================================================
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217 // Create the Threads
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218 int coreIdx, retCode;
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219
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220 //Need the threads to be created suspended, and wait for a signal
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221 // before proceeding -- gives time after creating to initialize other
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222 // stuff before the coreLoops set off.
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223 _VMSMasterEnv->setupComplete = 0;
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224
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225 //Make the threads that animate the core loops
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226 for( coreIdx=0; coreIdx < NUM_CORES; coreIdx++ )
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227 { coreLoopThdParams[coreIdx] = VMS__malloc( sizeof(ThdParams) );
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228 coreLoopThdParams[coreIdx]->coreNum = coreIdx;
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229
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230 retCode =
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231 pthread_create( &(coreLoopThdHandles[coreIdx]),
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232 thdAttrs,
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233 &coreLoop,
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234 (void *)(coreLoopThdParams[coreIdx]) );
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235 if(retCode){printf("ERROR creating thread: %d\n", retCode); exit(1);}
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236 }
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237 }
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238
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239 /*Semantic layer calls this when it want the system to start running..
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240 *
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241 *This starts the core loops running then waits for them to exit.
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242 */
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243 void
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244 VMS__start_the_work_then_wait_until_done()
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245 { int coreIdx;
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246 //Start the core loops running
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247
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248 //tell the core loop threads that setup is complete
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249 //get lock, to lock out any threads still starting up -- they'll see
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250 // that setupComplete is true before entering while loop, and so never
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251 // wait on the condition
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252 pthread_mutex_lock( &suspendLock );
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253 _VMSMasterEnv->setupComplete = 1;
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254 pthread_mutex_unlock( &suspendLock );
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255 pthread_cond_broadcast( &suspend_cond );
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256
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257
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258 //wait for all to complete
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259 for( coreIdx=0; coreIdx < NUM_CORES; coreIdx++ )
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260 {
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261 pthread_join( coreLoopThdHandles[coreIdx], NULL );
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262 }
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263
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264 //NOTE: do not clean up VMS env here -- semantic layer has to have
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265 // a chance to clean up its environment first, then do a call to free
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266 // the Master env and rest of VMS locations
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267 }
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268
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269 #ifdef SEQUENTIAL
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270 /*Only difference between version with an OS thread pinned to each core and
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271 * the sequential version of VMS is VMS__init_Seq, this, and coreLoop_Seq.
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272 */
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273 void
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274 VMS__start_the_work_then_wait_until_done_Seq()
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275 {
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276 //Instead of un-suspending threads, just call the one and only
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277 // core loop (sequential version), in the main thread.
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278 coreLoop_Seq( NULL );
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279
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280 }
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281 #endif
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282
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283 /*Create stack, then create __cdecl structure on it and put initialData and
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284 * pointer to the new structure instance into the parameter positions on
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285 * the stack
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286 *Then put function pointer into nextInstrPt -- the stack is setup in std
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287 * call structure, so jumping to function ptr is same as a GCC generated
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288 * function call
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289 *No need to save registers on old stack frame, because there's no old
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290 * animator state to return to --
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291 *
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292 */
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293 inline VirtProcr *
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294 create_procr_helper( VirtProcr *newPr, VirtProcrFnPtr fnPtr,
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295 void *initialData, char *stackLocs )
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296 {
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297 char *stackPtr;
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298
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299 newPr->startOfStack = stackLocs;
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300 newPr->procrID = _VMSMasterEnv->numProcrsCreated++;
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301 newPr->nextInstrPt = fnPtr;
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302 newPr->initialData = initialData;
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303 newPr->requests = NULL;
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304 newPr->schedSlot = NULL;
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305
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306 //fnPtr takes two params -- void *initData & void *animProcr
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307 //alloc stack locations, make stackPtr be the highest addr minus room
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308 // for 2 params + return addr. Return addr (NULL) is in loc pointed to
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309 // by stackPtr, initData at stackPtr + 4 bytes, animatingPr just above
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310 stackPtr = ( (char *)stackLocs + VIRT_PROCR_STACK_SIZE - 0x10 );
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311
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312 //setup __cdecl on stack -- coreloop will switch to stackPtr before jmp
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313 *( (int *)stackPtr + 2 ) = (int) newPr; //rightmost param -- 32bit pointer
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314 *( (int *)stackPtr + 1 ) = (int) initialData; //next param to left
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315 newPr->stackPtr = stackPtr; //core loop will switch to this, then
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316 newPr->framePtr = stackPtr; //suspend loop will save new stack & frame ptr
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317
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318 //============================= MEASUREMENT STUFF ========================
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319 #ifdef STATS__TURN_ON_PROBES
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320 struct timeval timeStamp;
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321 gettimeofday( &(timeStamp), NULL);
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Me@54
|
322 newPr->createPtInSecs = timeStamp.tv_sec +(timeStamp.tv_usec/1000000.0) -
|
|
Me@54
|
323 _VMSMasterEnv->createPtInSecs;
|
|
Me@50
|
324 #endif
|
|
Me@50
|
325 //========================================================================
|
|
Me@50
|
326
|
|
Me@8
|
327 return newPr;
|
|
Me@8
|
328 }
|
|
Me@8
|
329
|
|
Me@50
|
330 inline VirtProcr *
|
|
Me@50
|
331 VMS__create_procr( VirtProcrFnPtr fnPtr, void *initialData )
|
|
Me@50
|
332 { VirtProcr *newPr;
|
|
Me@50
|
333 char *stackLocs;
|
|
Me@50
|
334
|
|
Me@50
|
335 newPr = VMS__malloc( sizeof(VirtProcr) );
|
|
Me@50
|
336 stackLocs = VMS__malloc( VIRT_PROCR_STACK_SIZE );
|
|
Me@50
|
337 if( stackLocs == 0 )
|
|
Me@50
|
338 { perror("VMS__malloc stack"); exit(1); }
|
|
Me@50
|
339
|
|
Me@50
|
340 return create_procr_helper( newPr, fnPtr, initialData, stackLocs );
|
|
Me@50
|
341 }
|
|
Me@50
|
342
|
|
Me@50
|
343 /* "ext" designates that it's for use outside the VMS system -- should only
|
|
Me@50
|
344 * be called from main thread or other thread -- never from code animated by
|
|
Me@50
|
345 * a VMS virtual processor.
|
|
Me@50
|
346 */
|
|
Me@50
|
347 inline VirtProcr *
|
|
Me@50
|
348 VMS_ext__create_procr( VirtProcrFnPtr fnPtr, void *initialData )
|
|
Me@50
|
349 { VirtProcr *newPr;
|
|
Me@50
|
350 char *stackLocs;
|
|
Me@50
|
351
|
|
Me@50
|
352 newPr = malloc( sizeof(VirtProcr) );
|
|
Me@50
|
353 stackLocs = malloc( VIRT_PROCR_STACK_SIZE );
|
|
Me@50
|
354 if( stackLocs == 0 )
|
|
Me@50
|
355 { perror("malloc stack"); exit(1); }
|
|
Me@50
|
356
|
|
Me@50
|
357 return create_procr_helper( newPr, fnPtr, initialData, stackLocs );
|
|
Me@50
|
358 }
|
|
Me@50
|
359
|
|
Me@8
|
360
|
|
Me@64
|
361 /*Anticipating multi-tasking
|
|
Me@64
|
362 */
|
|
Me@64
|
363 void *
|
|
Me@64
|
364 VMS__give_sem_env_for( VirtProcr *animPr )
|
|
Me@64
|
365 {
|
|
Me@64
|
366 return _VMSMasterEnv->semanticEnv;
|
|
Me@64
|
367 }
|
|
Me@64
|
368 //===========================================================================
|
|
Me@26
|
369 /*there is a label inside this function -- save the addr of this label in
|
|
Me@0
|
370 * the callingPr struc, as the pick-up point from which to start the next
|
|
Me@0
|
371 * work-unit for that procr. If turns out have to save registers, then
|
|
Me@0
|
372 * save them in the procr struc too. Then do assembly jump to the CoreLoop's
|
|
Me@0
|
373 * "done with work-unit" label. The procr struc is in the request in the
|
|
Me@0
|
374 * slave that animated the just-ended work-unit, so all the state is saved
|
|
Me@0
|
375 * there, and will get passed along, inside the request handler, to the
|
|
Me@0
|
376 * next work-unit for that procr.
|
|
Me@0
|
377 */
|
|
Me@8
|
378 void
|
|
Me@38
|
379 VMS__suspend_procr( VirtProcr *animatingPr )
|
|
Me@55
|
380 {
|
|
Me@0
|
381
|
|
Me@14
|
382 //The request to master will cause this suspended virt procr to get
|
|
Me@14
|
383 // scheduled again at some future point -- to resume, core loop jumps
|
|
Me@14
|
384 // to the resume point (below), which causes restore of saved regs and
|
|
Me@14
|
385 // "return" from this call.
|
|
msach@71
|
386 //animatingPr->nextInstrPt = &&ResumePt;
|
|
Me@1
|
387
|
|
Me@1
|
388 //return ownership of the virt procr and sched slot to Master virt pr
|
|
Me@38
|
389 animatingPr->schedSlot->workIsDone = TRUE;
|
|
Me@1
|
390
|
|
Me@41
|
391 //=========================== Measurement stuff ========================
|
|
Me@38
|
392 #ifdef MEAS__TIME_STAMP_SUSP
|
|
Me@41
|
393 //record time stamp: compare to time-stamp recorded below
|
|
Me@38
|
394 saveLowTimeStampCountInto( animatingPr->preSuspTSCLow );
|
|
Me@38
|
395 #endif
|
|
Me@41
|
396 //=======================================================================
|
|
Me@38
|
397
|
|
msach@71
|
398 switchToCoreLoop(animatingPr);
|
|
msach@71
|
399 flushRegisters();
|
|
Me@55
|
400
|
|
Me@55
|
401 //=======================================================================
|
|
msach@71
|
402
|
|
Me@38
|
403 #ifdef MEAS__TIME_STAMP_SUSP
|
|
Me@41
|
404 //NOTE: only take low part of count -- do sanity check when take diff
|
|
Me@38
|
405 saveLowTimeStampCountInto( animatingPr->postSuspTSCLow );
|
|
Me@38
|
406 #endif
|
|
Me@38
|
407
|
|
Me@0
|
408 return;
|
|
Me@0
|
409 }
|
|
Me@0
|
410
|
|
Me@22
|
411
|
|
Me@22
|
412
|
|
Me@50
|
413 /*For this implementation of VMS, it may not make much sense to have the
|
|
Me@50
|
414 * system of requests for creating a new processor done this way.. but over
|
|
Me@50
|
415 * the scope of single-master, multi-master, mult-tasking, OS-implementing,
|
|
Me@50
|
416 * distributed-memory, and so on, this gives VMS implementation a chance to
|
|
Me@50
|
417 * do stuff before suspend, in the AppVP, and in the Master before the plugin
|
|
Me@50
|
418 * is called, as well as in the lang-lib before this is called, and in the
|
|
Me@50
|
419 * plugin. So, this gives both VMS and language implementations a chance to
|
|
Me@50
|
420 * intercept at various points and do order-dependent stuff.
|
|
Me@50
|
421 *Having a standard VMSNewPrReqData struc allows the language to create and
|
|
Me@50
|
422 * free the struc, while VMS knows how to get the newPr if it wants it, and
|
|
Me@50
|
423 * it lets the lang have lang-specific data related to creation transported
|
|
Me@50
|
424 * to the plugin.
|
|
Me@50
|
425 */
|
|
Me@50
|
426 void
|
|
Me@50
|
427 VMS__send_create_procr_req( void *semReqData, VirtProcr *reqstingPr )
|
|
Me@50
|
428 { VMSReqst req;
|
|
Me@50
|
429
|
|
Me@50
|
430 req.reqType = createReq;
|
|
Me@50
|
431 req.semReqData = semReqData;
|
|
Me@50
|
432 req.nextReqst = reqstingPr->requests;
|
|
Me@50
|
433 reqstingPr->requests = &req;
|
|
Me@50
|
434
|
|
Me@50
|
435 VMS__suspend_procr( reqstingPr );
|
|
Me@50
|
436 }
|
|
Me@50
|
437
|
|
Me@22
|
438
|
|
Me@38
|
439 /*
|
|
Me@22
|
440 *This adds a request to dissipate, then suspends the processor so that the
|
|
Me@22
|
441 * request handler will receive the request. The request handler is what
|
|
Me@22
|
442 * does the work of freeing memory and removing the processor from the
|
|
Me@22
|
443 * semantic environment's data structures.
|
|
Me@22
|
444 *The request handler also is what figures out when to shutdown the VMS
|
|
Me@22
|
445 * system -- which causes all the core loop threads to die, and returns from
|
|
Me@22
|
446 * the call that started up VMS to perform the work.
|
|
Me@22
|
447 *
|
|
Me@22
|
448 *This form is a bit misleading to understand if one is trying to figure out
|
|
Me@22
|
449 * how VMS works -- it looks like a normal function call, but inside it
|
|
Me@22
|
450 * sends a request to the request handler and suspends the processor, which
|
|
Me@22
|
451 * jumps out of the VMS__dissipate_procr function, and out of all nestings
|
|
Me@22
|
452 * above it, transferring the work of dissipating to the request handler,
|
|
Me@22
|
453 * which then does the actual work -- causing the processor that animated
|
|
Me@22
|
454 * the call of this function to disappear and the "hanging" state of this
|
|
Me@22
|
455 * function to just poof into thin air -- the virtual processor's trace
|
|
Me@22
|
456 * never returns from this call, but instead the virtual processor's trace
|
|
Me@22
|
457 * gets suspended in this call and all the virt processor's state disap-
|
|
Me@22
|
458 * pears -- making that suspend the last thing in the virt procr's trace.
|
|
Me@8
|
459 */
|
|
Me@8
|
460 void
|
|
Me@53
|
461 VMS__send_dissipate_req( VirtProcr *procrToDissipate )
|
|
Me@50
|
462 { VMSReqst req;
|
|
Me@22
|
463
|
|
Me@50
|
464 req.reqType = dissipate;
|
|
Me@50
|
465 req.nextReqst = procrToDissipate->requests;
|
|
Me@50
|
466 procrToDissipate->requests = &req;
|
|
Me@50
|
467
|
|
Me@22
|
468 VMS__suspend_procr( procrToDissipate );
|
|
Me@50
|
469 }
|
|
Me@50
|
470
|
|
Me@50
|
471
|
|
Me@50
|
472 /* "ext" designates that it's for use outside the VMS system -- should only
|
|
Me@50
|
473 * be called from main thread or other thread -- never from code animated by
|
|
Me@50
|
474 * a VMS virtual processor.
|
|
Me@50
|
475 *
|
|
Me@50
|
476 *Use this version to dissipate VPs created outside the VMS system.
|
|
Me@50
|
477 */
|
|
Me@50
|
478 void
|
|
Me@50
|
479 VMS_ext__dissipate_procr( VirtProcr *procrToDissipate )
|
|
Me@50
|
480 {
|
|
Me@50
|
481 //NOTE: initialData was given to the processor, so should either have
|
|
Me@50
|
482 // been alloc'd with VMS__malloc, or freed by the level above animPr.
|
|
Me@50
|
483 //So, all that's left to free here is the stack and the VirtProcr struc
|
|
Me@50
|
484 // itself
|
|
Me@50
|
485 //Note, should not stack-allocate initial data -- no guarantee, in
|
|
Me@50
|
486 // general that creating processor will outlive ones it creates.
|
|
Me@50
|
487 free( procrToDissipate->startOfStack );
|
|
Me@50
|
488 free( procrToDissipate );
|
|
Me@50
|
489 }
|
|
Me@50
|
490
|
|
Me@22
|
491
|
|
Me@22
|
492
|
|
Me@53
|
493 /*This call's name indicates that request is malloc'd -- so req handler
|
|
Me@53
|
494 * has to free any extra requests tacked on before a send, using this.
|
|
Me@53
|
495 *
|
|
Me@53
|
496 * This inserts the semantic-layer's request data into standard VMS carrier
|
|
Me@53
|
497 * request data-struct that is mallocd. The sem request doesn't need to
|
|
Me@53
|
498 * be malloc'd if this is called inside the same call chain before the
|
|
Me@53
|
499 * send of the last request is called.
|
|
Me@53
|
500 *
|
|
Me@53
|
501 *The request handler has to call VMS__free_VMSReq for any of these
|
|
Me@22
|
502 */
|
|
Me@22
|
503 inline void
|
|
Me@53
|
504 VMS__add_sem_request_in_mallocd_VMSReqst( void *semReqData,
|
|
Me@53
|
505 VirtProcr *callingPr )
|
|
Me@53
|
506 { VMSReqst *req;
|
|
Me@22
|
507
|
|
Me@53
|
508 req = VMS__malloc( sizeof(VMSReqst) );
|
|
Me@53
|
509 req->reqType = semantic;
|
|
Me@53
|
510 req->semReqData = semReqData;
|
|
Me@53
|
511 req->nextReqst = callingPr->requests;
|
|
Me@53
|
512 callingPr->requests = req;
|
|
Me@22
|
513 }
|
|
Me@22
|
514
|
|
Me@50
|
515 /*This inserts the semantic-layer's request data into standard VMS carrier
|
|
Me@50
|
516 * request data-struct is allocated on stack of this call & ptr to it sent
|
|
Me@50
|
517 * to plugin
|
|
Me@50
|
518 *Then it does suspend, to cause request to be sent.
|
|
Me@50
|
519 */
|
|
Me@50
|
520 inline void
|
|
Me@50
|
521 VMS__send_sem_request( void *semReqData, VirtProcr *callingPr )
|
|
Me@50
|
522 { VMSReqst req;
|
|
Me@22
|
523
|
|
Me@50
|
524 req.reqType = semantic;
|
|
Me@50
|
525 req.semReqData = semReqData;
|
|
Me@50
|
526 req.nextReqst = callingPr->requests;
|
|
Me@50
|
527 callingPr->requests = &req;
|
|
Me@50
|
528
|
|
Me@50
|
529 VMS__suspend_procr( callingPr );
|
|
Me@50
|
530 }
|
|
Me@50
|
531
|
|
Me@50
|
532
|
|
Me@50
|
533 inline void
|
|
Me@50
|
534 VMS__send_VMSSem_request( void *semReqData, VirtProcr *callingPr )
|
|
Me@50
|
535 { VMSReqst req;
|
|
Me@50
|
536
|
|
Me@50
|
537 req.reqType = VMSSemantic;
|
|
Me@50
|
538 req.semReqData = semReqData;
|
|
Me@50
|
539 req.nextReqst = callingPr->requests; //gab any other preceeding
|
|
Me@50
|
540 callingPr->requests = &req;
|
|
Me@50
|
541
|
|
Me@50
|
542 VMS__suspend_procr( callingPr );
|
|
Me@50
|
543 }
|
|
Me@50
|
544
|
|
Me@50
|
545
|
|
Me@50
|
546 /*
|
|
Me@38
|
547 */
|
|
Me@24
|
548 VMSReqst *
|
|
Me@50
|
549 VMS__take_next_request_out_of( VirtProcr *procrWithReq )
|
|
Me@31
|
550 { VMSReqst *req;
|
|
Me@31
|
551
|
|
Me@31
|
552 req = procrWithReq->requests;
|
|
Me@38
|
553 if( req == NULL ) return NULL;
|
|
Me@31
|
554
|
|
Me@31
|
555 procrWithReq->requests = procrWithReq->requests->nextReqst;
|
|
Me@50
|
556 return req;
|
|
Me@24
|
557 }
|
|
Me@22
|
558
|
|
Me@24
|
559
|
|
Me@24
|
560 inline void *
|
|
Me@24
|
561 VMS__take_sem_reqst_from( VMSReqst *req )
|
|
Me@24
|
562 {
|
|
Me@24
|
563 return req->semReqData;
|
|
Me@24
|
564 }
|
|
Me@24
|
565
|
|
Me@24
|
566
|
|
Me@24
|
567
|
|
Me@50
|
568 /* This is for OS requests and VMS infrastructure requests, such as to create
|
|
Me@50
|
569 * a probe -- a probe is inside the heart of VMS-core, it's not part of any
|
|
Me@50
|
570 * language -- but it's also a semantic thing that's triggered from and used
|
|
Me@50
|
571 * in the application.. so it crosses abstractions.. so, need some special
|
|
Me@50
|
572 * pattern here for handling such requests.
|
|
Me@52
|
573 * Doing this just like it were a second language sharing VMS-core.
|
|
Me@52
|
574 *
|
|
Me@50
|
575 * This is called from the language's request handler when it sees a request
|
|
Me@50
|
576 * of type VMSSemReq
|
|
Me@52
|
577 *
|
|
Me@52
|
578 * TODO: Later change this, to give probes their own separate plugin & have
|
|
Me@52
|
579 * VMS-core steer the request to appropriate plugin
|
|
Me@52
|
580 * Do the same for OS calls -- look later at it..
|
|
Me@50
|
581 */
|
|
Me@50
|
582 void inline
|
|
Me@50
|
583 VMS__handle_VMSSemReq( VMSReqst *req, VirtProcr *requestingPr, void *semEnv,
|
|
Me@50
|
584 ResumePrFnPtr resumePrFnPtr )
|
|
Me@50
|
585 { VMSSemReq *semReq;
|
|
Me@50
|
586 IntervalProbe *newProbe;
|
|
Me@50
|
587 int32 nameLen;
|
|
Me@24
|
588
|
|
Me@50
|
589 semReq = req->semReqData;
|
|
Me@24
|
590
|
|
Me@50
|
591 newProbe = VMS__malloc( sizeof(IntervalProbe) );
|
|
Me@65
|
592 newProbe->nameStr = VMS__strDup( semReq->nameStr );
|
|
Me@50
|
593 newProbe->hist = NULL;
|
|
Me@50
|
594 newProbe->schedChoiceWasRecorded = FALSE;
|
|
Me@53
|
595
|
|
Me@53
|
596 //This runs in masterVP, so no race-condition worries
|
|
Me@50
|
597 newProbe->probeID =
|
|
Me@50
|
598 addToDynArray( newProbe, _VMSMasterEnv->dynIntervalProbesInfo );
|
|
Me@50
|
599
|
|
Me@53
|
600 requestingPr->dataRetFromReq = newProbe;
|
|
Me@50
|
601
|
|
Me@50
|
602 (*resumePrFnPtr)( requestingPr, semEnv );
|
|
Me@22
|
603 }
|
|
Me@22
|
604
|
|
Me@22
|
605
|
|
Me@22
|
606
|
|
Me@24
|
607 /*This must be called by the request handler plugin -- it cannot be called
|
|
Me@24
|
608 * from the semantic library "dissipate processor" function -- instead, the
|
|
Me@50
|
609 * semantic layer has to generate a request, and the plug-in calls this
|
|
Me@24
|
610 * function.
|
|
Me@24
|
611 *The reason is that this frees the virtual processor's stack -- which is
|
|
Me@24
|
612 * still in use inside semantic library calls!
|
|
Me@24
|
613 *
|
|
Me@24
|
614 *This frees or recycles all the state owned by and comprising the VMS
|
|
Me@24
|
615 * portion of the animating virtual procr. The request handler must first
|
|
Me@24
|
616 * free any semantic data created for the processor that didn't use the
|
|
Me@24
|
617 * VMS_malloc mechanism. Then it calls this, which first asks the malloc
|
|
Me@24
|
618 * system to disown any state that did use VMS_malloc, and then frees the
|
|
Me@24
|
619 * statck and the processor-struct itself.
|
|
Me@24
|
620 *If the dissipated processor is the sole (remaining) owner of VMS__malloc'd
|
|
Me@24
|
621 * state, then that state gets freed (or sent to recycling) as a side-effect
|
|
Me@24
|
622 * of dis-owning it.
|
|
Me@24
|
623 */
|
|
Me@24
|
624 void
|
|
Me@53
|
625 VMS__dissipate_procr( VirtProcr *animatingPr )
|
|
Me@24
|
626 {
|
|
Me@24
|
627 //dis-own all locations owned by this processor, causing to be freed
|
|
Me@24
|
628 // any locations that it is (was) sole owner of
|
|
Me@29
|
629 //TODO: implement VMS__malloc system, including "give up ownership"
|
|
Me@24
|
630
|
|
Me@24
|
631
|
|
Me@24
|
632 //NOTE: initialData was given to the processor, so should either have
|
|
Me@24
|
633 // been alloc'd with VMS__malloc, or freed by the level above animPr.
|
|
Me@24
|
634 //So, all that's left to free here is the stack and the VirtProcr struc
|
|
Me@24
|
635 // itself
|
|
Me@50
|
636 //Note, should not stack-allocate initial data -- no guarantee, in
|
|
Me@50
|
637 // general that creating processor will outlive ones it creates.
|
|
Me@50
|
638 VMS__free( animatingPr->startOfStack );
|
|
Me@50
|
639 VMS__free( animatingPr );
|
|
Me@24
|
640 }
|
|
Me@24
|
641
|
|
Me@24
|
642
|
|
Me@53
|
643 //TODO: look at architecting cleanest separation between request handler
|
|
Me@29
|
644 // and master loop, for dissipate, create, shutdown, and other non-semantic
|
|
Me@29
|
645 // requests. Issue is chain: one removes requests from AppVP, one dispatches
|
|
Me@29
|
646 // on type of request, and one handles each type.. but some types require
|
|
Me@29
|
647 // action from both request handler and master loop -- maybe just give the
|
|
Me@29
|
648 // request handler calls like: VMS__handle_X_request_type
|
|
Me@24
|
649
|
|
Me@29
|
650
|
|
Me@29
|
651 /*This is called by the semantic layer's request handler when it decides its
|
|
Me@29
|
652 * time to shut down the VMS system. Calling this causes the core loop OS
|
|
Me@29
|
653 * threads to exit, which unblocks the entry-point function that started up
|
|
Me@29
|
654 * VMS, and allows it to grab the result and return to the original single-
|
|
Me@29
|
655 * threaded application.
|
|
Me@22
|
656 *
|
|
Me@29
|
657 *The _VMSMasterEnv is needed by this shut down function, so the create-seed-
|
|
Me@29
|
658 * and-wait function has to free a bunch of stuff after it detects the
|
|
Me@29
|
659 * threads have all died: the masterEnv, the thread-related locations,
|
|
Me@29
|
660 * masterVP any AppVPs that might still be allocated and sitting in the
|
|
Me@29
|
661 * semantic environment, or have been orphaned in the _VMSWorkQ.
|
|
Me@29
|
662 *
|
|
Me@53
|
663 *NOTE: the semantic plug-in is expected to use VMS__malloc to get all the
|
|
Me@29
|
664 * locations it needs, and give ownership to masterVP. Then, they will be
|
|
Me@53
|
665 * automatically freed.
|
|
Me@22
|
666 *
|
|
Me@29
|
667 *In here,create one core-loop shut-down processor for each core loop and put
|
|
Me@31
|
668 * them all directly into the readyToAnimateQ.
|
|
Me@29
|
669 *Note, this function can ONLY be called after the semantic environment no
|
|
Me@29
|
670 * longer cares if AppVPs get animated after the point this is called. In
|
|
Me@29
|
671 * other words, this can be used as an abort, or else it should only be
|
|
Me@29
|
672 * called when all AppVPs have finished dissipate requests -- only at that
|
|
Me@29
|
673 * point is it sure that all results have completed.
|
|
Me@22
|
674 */
|
|
Me@22
|
675 void
|
|
Me@53
|
676 VMS__shutdown()
|
|
Me@8
|
677 { int coreIdx;
|
|
Me@14
|
678 VirtProcr *shutDownPr;
|
|
Me@22
|
679
|
|
Me@29
|
680 //create the shutdown processors, one for each core loop -- put them
|
|
Me@31
|
681 // directly into the Q -- each core will die when gets one
|
|
Me@8
|
682 for( coreIdx=0; coreIdx < NUM_CORES; coreIdx++ )
|
|
Me@50
|
683 { //Note, this is running in the master
|
|
Me@29
|
684 shutDownPr = VMS__create_procr( &endOSThreadFn, NULL );
|
|
Me@55
|
685 writeVMSQ( shutDownPr, _VMSMasterEnv->readyToAnimateQs[coreIdx] );
|
|
Me@8
|
686 }
|
|
Me@22
|
687
|
|
Me@12
|
688 }
|
|
Me@12
|
689
|
|
Me@12
|
690
|
|
Me@29
|
691 /*Am trying to be cute, avoiding IF statement in coreLoop that checks for
|
|
Me@29
|
692 * a special shutdown procr. Ended up with extra-complex shutdown sequence.
|
|
Me@29
|
693 *This function has the sole purpose of setting the stack and framePtr
|
|
Me@29
|
694 * to the coreLoop's stack and framePtr.. it does that then jumps to the
|
|
Me@29
|
695 * core loop's shutdown point -- might be able to just call Pthread_exit
|
|
Me@30
|
696 * from here, but am going back to the pthread's stack and setting everything
|
|
Me@29
|
697 * up just as if it never jumped out, before calling pthread_exit.
|
|
Me@29
|
698 *The end-point of core loop will free the stack and so forth of the
|
|
Me@29
|
699 * processor that animates this function, (this fn is transfering the
|
|
Me@29
|
700 * animator of the AppVP that is in turn animating this function over
|
|
Me@29
|
701 * to core loop function -- note that this slices out a level of virtual
|
|
Me@29
|
702 * processors).
|
|
Me@29
|
703 */
|
|
Me@29
|
704 void
|
|
Me@29
|
705 endOSThreadFn( void *initData, VirtProcr *animatingPr )
|
|
msach@71
|
706 {
|
|
msach@71
|
707 asmTerminateCoreLoop(animatingPr);
|
|
Me@29
|
708 }
|
|
Me@29
|
709
|
|
Me@29
|
710
|
|
Me@53
|
711 /*This is called from the startup & shutdown
|
|
Me@24
|
712 */
|
|
Me@24
|
713 void
|
|
Me@53
|
714 VMS__cleanup_at_end_of_shutdown()
|
|
Me@31
|
715 {
|
|
Me@55
|
716 VMSQueueStruc **readyToAnimateQs;
|
|
Me@31
|
717 int coreIdx;
|
|
Me@31
|
718 VirtProcr **masterVPs;
|
|
Me@31
|
719 SchedSlot ***allSchedSlots; //ptr to array of ptrs
|
|
Me@31
|
720
|
|
Me@65
|
721 //Before getting rid of everything, print out any measurements made
|
|
msach@69
|
722 forAllInDynArrayDo( _VMSMasterEnv->measHistsInfo, (DynArrayFnPtr)&printHist );
|
|
Me@68
|
723 //forAllInDynArrayDo( _VMSMasterEnv->measHistsInfo, &freeHistExt );
|
|
Me@65
|
724 #ifdef MEAS__TIME_PLUGIN
|
|
Me@68
|
725 printHist( _VMSMasterEnv->reqHdlrLowTimeHist );
|
|
Me@68
|
726 printHist( _VMSMasterEnv->reqHdlrHighTimeHist );
|
|
Me@68
|
727 freeHistExt( _VMSMasterEnv->reqHdlrLowTimeHist );
|
|
Me@68
|
728 freeHistExt( _VMSMasterEnv->reqHdlrHighTimeHist );
|
|
Me@65
|
729 #endif
|
|
Me@65
|
730 #ifdef MEAS__TIME_MALLOC
|
|
Me@65
|
731 printHist( _VMSMasterEnv->mallocTimeHist );
|
|
Me@65
|
732 printHist( _VMSMasterEnv->freeTimeHist );
|
|
Me@65
|
733 freeHistExt( _VMSMasterEnv->mallocTimeHist );
|
|
Me@65
|
734 freeHistExt( _VMSMasterEnv->freeTimeHist );
|
|
Me@65
|
735 #endif
|
|
Me@65
|
736 #ifdef MEAS__TIME_MASTER_LOCK
|
|
Me@65
|
737 printHist( _VMSMasterEnv->masterLockLowTimeHist );
|
|
Me@65
|
738 printHist( _VMSMasterEnv->masterLockHighTimeHist );
|
|
Me@65
|
739 #endif
|
|
Me@65
|
740 #ifdef MEAS__TIME_MASTER
|
|
Me@65
|
741 printHist( _VMSMasterEnv->pluginTimeHist );
|
|
Me@65
|
742 for( coreIdx = 0; coreIdx < NUM_CORES; coreIdx++ )
|
|
Me@65
|
743 {
|
|
Me@65
|
744 freeVMSQ( readyToAnimateQs[ coreIdx ] );
|
|
Me@65
|
745 //master VPs were created external to VMS, so use external free
|
|
Me@65
|
746 VMS__dissipate_procr( masterVPs[ coreIdx ] );
|
|
Me@65
|
747
|
|
Me@65
|
748 freeSchedSlots( allSchedSlots[ coreIdx ] );
|
|
Me@65
|
749 }
|
|
Me@65
|
750 #endif
|
|
Me@65
|
751 #ifdef MEAS__TIME_STAMP_SUSP
|
|
Me@65
|
752 printHist( _VMSMasterEnv->pluginTimeHist );
|
|
Me@65
|
753 for( coreIdx = 0; coreIdx < NUM_CORES; coreIdx++ )
|
|
Me@65
|
754 {
|
|
Me@65
|
755 freeVMSQ( readyToAnimateQs[ coreIdx ] );
|
|
Me@65
|
756 //master VPs were created external to VMS, so use external free
|
|
Me@65
|
757 VMS__dissipate_procr( masterVPs[ coreIdx ] );
|
|
Me@65
|
758
|
|
Me@65
|
759 freeSchedSlots( allSchedSlots[ coreIdx ] );
|
|
Me@65
|
760 }
|
|
Me@65
|
761 #endif
|
|
Me@65
|
762
|
|
Me@53
|
763 //All the environment data has been allocated with VMS__malloc, so just
|
|
Me@53
|
764 // free its internal big-chunk and all inside it disappear.
|
|
Me@53
|
765 /*
|
|
Me@31
|
766 readyToAnimateQs = _VMSMasterEnv->readyToAnimateQs;
|
|
Me@31
|
767 masterVPs = _VMSMasterEnv->masterVPs;
|
|
Me@31
|
768 allSchedSlots = _VMSMasterEnv->allSchedSlots;
|
|
Me@31
|
769
|
|
Me@31
|
770 for( coreIdx = 0; coreIdx < NUM_CORES; coreIdx++ )
|
|
Me@24
|
771 {
|
|
Me@55
|
772 freeVMSQ( readyToAnimateQs[ coreIdx ] );
|
|
Me@50
|
773 //master VPs were created external to VMS, so use external free
|
|
Me@53
|
774 VMS__dissipate_procr( masterVPs[ coreIdx ] );
|
|
Me@31
|
775
|
|
Me@31
|
776 freeSchedSlots( allSchedSlots[ coreIdx ] );
|
|
Me@24
|
777 }
|
|
Me@31
|
778
|
|
Me@53
|
779 VMS__free( _VMSMasterEnv->readyToAnimateQs );
|
|
Me@53
|
780 VMS__free( _VMSMasterEnv->masterVPs );
|
|
Me@53
|
781 VMS__free( _VMSMasterEnv->allSchedSlots );
|
|
Me@50
|
782
|
|
Me@50
|
783 //============================= MEASUREMENT STUFF ========================
|
|
Me@50
|
784 #ifdef STATS__TURN_ON_PROBES
|
|
Me@53
|
785 freeDynArrayDeep( _VMSMasterEnv->dynIntervalProbesInfo, &VMS__free_probe);
|
|
Me@50
|
786 #endif
|
|
Me@50
|
787 //========================================================================
|
|
Me@53
|
788 */
|
|
Me@53
|
789 //These are the only two that use system free
|
|
Me@53
|
790 VMS_ext__free_free_list( _VMSMasterEnv->freeListHead );
|
|
Me@53
|
791 free( (void *)_VMSMasterEnv );
|
|
Me@24
|
792 }
|
|
Me@24
|
793
|
|
Me@54
|
794
|
|
Me@54
|
795 //================================
|
|
Me@54
|
796
|
|
Me@54
|
797
|
|
Me@54
|
798 /*Later, improve this -- for now, just exits the application after printing
|
|
Me@54
|
799 * the error message.
|
|
Me@54
|
800 */
|
|
Me@54
|
801 void
|
|
Me@54
|
802 VMS__throw_exception( char *msgStr, VirtProcr *reqstPr, VMSExcp *excpData )
|
|
Me@54
|
803 {
|
|
msach@69
|
804 printf("%s",msgStr);
|
|
Me@54
|
805 fflush(stdin);
|
|
Me@54
|
806 exit(1);
|
|
Me@54
|
807 }
|
|
Me@54
|
808
|
