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