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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->freeListHead[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
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119 //============================= MEASUREMENT STUFF ========================
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120 #ifdef MEAS__TIME_MALLOC
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121 _VMSMasterEnv->mallocTimeHist = makeFixedBinHistExt( 100, 0, 100,
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122 "malloc_time_hist");
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123 _VMSMasterEnv->freeTimeHist = makeFixedBinHistExt( 80, 0, 100,
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124 "free_time_hist");
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125 #endif
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126 #ifdef MEAS__TIME_PLUGIN
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127 _VMSMasterEnv->reqHdlrLowTimeHist = makeFixedBinHistExt( 1000, 0, 100,
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128 "plugin_low_time_hist");
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129 _VMSMasterEnv->reqHdlrHighTimeHist = makeFixedBinHistExt( 1000, 0, 100,
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130 "plugin_high_time_hist");
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131 #endif
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132 //========================================================================
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133
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134 //===================== Only VMS__malloc after this ====================
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135 masterEnv = (MasterEnv*)_VMSMasterEnv;
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136
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137 //Make a readyToAnimateQ for each core loop
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138 readyToAnimateQs = VMS__malloc( NUM_CORES * sizeof(VMSQueueStruc *) );
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139 masterVPs = VMS__malloc( NUM_CORES * sizeof(VirtProcr *) );
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140
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141 //One array for each core, 3 in array, core's masterVP scheds all
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142 allSchedSlots = VMS__malloc( NUM_CORES * sizeof(SchedSlot *) );
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143
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144 _VMSMasterEnv->numProcrsCreated = 0; //used by create procr
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145 for( coreIdx = 0; coreIdx < NUM_CORES; coreIdx++ )
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146 {
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147 readyToAnimateQs[ coreIdx ] = makeVMSQ();
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148
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149 //Q: should give masterVP core-specific info as its init data?
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150 masterVPs[ coreIdx ] = VMS__create_procr( (VirtProcrFnPtr)&masterLoop, (void*)masterEnv );
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151 masterVPs[ coreIdx ]->coreAnimatedBy = coreIdx;
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152 allSchedSlots[ coreIdx ] = create_sched_slots(); //makes for one core
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153 _VMSMasterEnv->numMasterInARow[ coreIdx ] = 0;
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154 _VMSMasterEnv->workStealingGates[ coreIdx ] = NULL;
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155 }
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156 _VMSMasterEnv->readyToAnimateQs = readyToAnimateQs;
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157 _VMSMasterEnv->masterVPs = masterVPs;
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158 _VMSMasterEnv->masterLock = UNLOCKED;
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159 _VMSMasterEnv->allSchedSlots = allSchedSlots;
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160 _VMSMasterEnv->workStealingLock = UNLOCKED;
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161
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162
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163 //Aug 19, 2010: no longer need to place initial masterVP into queue
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164 // because coreLoop now controls -- animates its masterVP when no work
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165
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166
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167 //============================= MEASUREMENT STUFF ========================
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168 #ifdef STATS__TURN_ON_PROBES
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169 _VMSMasterEnv->dynIntervalProbesInfo =
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170 makePrivDynArrayOfSize( (void***)&(_VMSMasterEnv->intervalProbes), 200);
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171
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172 _VMSMasterEnv->probeNameHashTbl = makeHashTable( 1000, &VMS__free );
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173
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174 //put creation time directly into master env, for fast retrieval
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175 struct timeval timeStamp;
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176 gettimeofday( &(timeStamp), NULL);
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177 _VMSMasterEnv->createPtInSecs =
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178 timeStamp.tv_sec +(timeStamp.tv_usec/1000000.0);
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179 #endif
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180 #ifdef MEAS__TIME_MASTER_LOCK
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181 _VMSMasterEnv->masterLockLowTimeHist = makeFixedBinHist( 50, 0, 2,
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182 "master lock low time hist");
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183 _VMSMasterEnv->masterLockHighTimeHist = makeFixedBinHist( 50, 0, 100,
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184 "master lock high time hist");
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185 #endif
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186
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187 MakeTheMeasHists();
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188 //========================================================================
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189
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190 }
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191
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192 SchedSlot **
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193 create_sched_slots()
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194 { SchedSlot **schedSlots;
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195 int i;
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196
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197 schedSlots = VMS__malloc( NUM_SCHED_SLOTS * sizeof(SchedSlot *) );
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198
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199 for( i = 0; i < NUM_SCHED_SLOTS; i++ )
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200 {
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201 schedSlots[i] = VMS__malloc( sizeof(SchedSlot) );
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202
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203 //Set state to mean "handling requests done, slot needs filling"
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204 schedSlots[i]->workIsDone = FALSE;
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205 schedSlots[i]->needsProcrAssigned = TRUE;
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206 }
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207 return schedSlots;
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208 }
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209
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210
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211 void
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212 freeSchedSlots( SchedSlot **schedSlots )
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213 { int i;
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214 for( i = 0; i < NUM_SCHED_SLOTS; i++ )
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215 {
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216 VMS__free( schedSlots[i] );
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217 }
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218 VMS__free( schedSlots );
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219 }
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220
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221
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222 void
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223 create_the_coreLoop_OS_threads()
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224 {
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225 //========================================================================
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226 // Create the Threads
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227 int coreIdx, retCode;
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228
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229 //Need the threads to be created suspended, and wait for a signal
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230 // before proceeding -- gives time after creating to initialize other
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231 // stuff before the coreLoops set off.
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232 _VMSMasterEnv->setupComplete = 0;
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233
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234 //Make the threads that animate the core loops
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235 for( coreIdx=0; coreIdx < NUM_CORES; coreIdx++ )
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236 { coreLoopThdParams[coreIdx] = VMS__malloc( sizeof(ThdParams) );
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237 coreLoopThdParams[coreIdx]->coreNum = coreIdx;
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238
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239 retCode =
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240 pthread_create( &(coreLoopThdHandles[coreIdx]),
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241 thdAttrs,
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242 &coreLoop,
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243 (void *)(coreLoopThdParams[coreIdx]) );
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244 if(retCode){printf("ERROR creating thread: %d\n", retCode); exit(1);}
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245 }
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246 }
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247
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248 /*Semantic layer calls this when it want the system to start running..
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249 *
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250 *This starts the core loops running then waits for them to exit.
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251 */
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252 void
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253 VMS__start_the_work_then_wait_until_done()
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254 { int coreIdx;
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255 //Start the core loops running
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256
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257 //tell the core loop threads that setup is complete
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258 //get lock, to lock out any threads still starting up -- they'll see
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259 // that setupComplete is true before entering while loop, and so never
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260 // wait on the condition
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261 pthread_mutex_lock( &suspendLock );
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262 _VMSMasterEnv->setupComplete = 1;
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263 pthread_mutex_unlock( &suspendLock );
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264 pthread_cond_broadcast( &suspend_cond );
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265
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266
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267 //wait for all to complete
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268 for( coreIdx=0; coreIdx < NUM_CORES; coreIdx++ )
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269 {
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270 pthread_join( coreLoopThdHandles[coreIdx], NULL );
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271 }
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272
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273 //NOTE: do not clean up VMS env here -- semantic layer has to have
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274 // a chance to clean up its environment first, then do a call to free
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275 // the Master env and rest of VMS locations
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276 }
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277
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278 #ifdef SEQUENTIAL
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279 /*Only difference between version with an OS thread pinned to each core and
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280 * the sequential version of VMS is VMS__init_Seq, this, and coreLoop_Seq.
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281 */
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282 void
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283 VMS__start_the_work_then_wait_until_done_Seq()
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284 {
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285 //Instead of un-suspending threads, just call the one and only
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286 // core loop (sequential version), in the main thread.
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287 coreLoop_Seq( NULL );
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288 flushRegisters();
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289
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290 }
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291 #endif
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292
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293 inline VirtProcr *
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294 VMS__create_procr( VirtProcrFnPtr fnPtr, void *initialData )
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295 { VirtProcr *newPr;
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296 void *stackLocs;
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297
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298 newPr = VMS__malloc( sizeof(VirtProcr) );
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299 stackLocs = VMS__malloc( VIRT_PROCR_STACK_SIZE );
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300 if( stackLocs == 0 )
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301 { perror("VMS__malloc stack"); exit(1); }
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302
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303 return create_procr_helper( newPr, fnPtr, initialData, stackLocs );
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304 }
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305
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306 /* "ext" designates that it's for use outside the VMS system -- should only
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307 * be called from main thread or other thread -- never from code animated by
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308 * a VMS virtual processor.
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309 */
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310 inline VirtProcr *
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311 VMS_ext__create_procr( VirtProcrFnPtr fnPtr, void *initialData )
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312 { VirtProcr *newPr;
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313 char *stackLocs;
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314
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315 newPr = malloc( sizeof(VirtProcr) );
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316 stackLocs = malloc( VIRT_PROCR_STACK_SIZE );
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317 if( stackLocs == 0 )
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318 { perror("malloc stack"); exit(1); }
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319
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320 return create_procr_helper( newPr, fnPtr, initialData, stackLocs );
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321 }
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322
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323
|
|
Me@64
|
324 /*Anticipating multi-tasking
|
|
Me@64
|
325 */
|
|
Me@64
|
326 void *
|
|
Me@64
|
327 VMS__give_sem_env_for( VirtProcr *animPr )
|
|
Me@64
|
328 {
|
|
Me@64
|
329 return _VMSMasterEnv->semanticEnv;
|
|
Me@64
|
330 }
|
|
Me@64
|
331 //===========================================================================
|
|
Me@26
|
332 /*there is a label inside this function -- save the addr of this label in
|
|
Me@0
|
333 * the callingPr struc, as the pick-up point from which to start the next
|
|
Me@0
|
334 * work-unit for that procr. If turns out have to save registers, then
|
|
Me@0
|
335 * save them in the procr struc too. Then do assembly jump to the CoreLoop's
|
|
Me@0
|
336 * "done with work-unit" label. The procr struc is in the request in the
|
|
Me@0
|
337 * slave that animated the just-ended work-unit, so all the state is saved
|
|
Me@0
|
338 * there, and will get passed along, inside the request handler, to the
|
|
Me@0
|
339 * next work-unit for that procr.
|
|
Me@0
|
340 */
|
|
Me@8
|
341 void
|
|
Me@38
|
342 VMS__suspend_procr( VirtProcr *animatingPr )
|
|
Me@55
|
343 {
|
|
Me@30
|
344
|
|
Me@30
|
345 //The request to master will cause this suspended virt procr to get
|
|
Me@30
|
346 // scheduled again at some future point -- to resume, core loop jumps
|
|
Me@30
|
347 // to the resume point (below), which causes restore of saved regs and
|
|
Me@30
|
348 // "return" from this call.
|
|
msach@71
|
349 //animatingPr->nextInstrPt = &&ResumePt;
|
|
Me@30
|
350
|
|
Me@30
|
351 //return ownership of the virt procr and sched slot to Master virt pr
|
|
Me@38
|
352 animatingPr->schedSlot->workIsDone = TRUE;
|
|
Me@1
|
353
|
|
Me@41
|
354 //=========================== Measurement stuff ========================
|
|
Me@38
|
355 #ifdef MEAS__TIME_STAMP_SUSP
|
|
Me@41
|
356 //record time stamp: compare to time-stamp recorded below
|
|
Me@38
|
357 saveLowTimeStampCountInto( animatingPr->preSuspTSCLow );
|
|
Me@38
|
358 #endif
|
|
Me@41
|
359 //=======================================================================
|
|
Me@30
|
360
|
|
msach@71
|
361 switchToCoreLoop(animatingPr);
|
|
msach@71
|
362 flushRegisters();
|
|
Me@55
|
363
|
|
Me@55
|
364 //=======================================================================
|
|
Me@30
|
365
|
|
Me@38
|
366 #ifdef MEAS__TIME_STAMP_SUSP
|
|
Me@41
|
367 //NOTE: only take low part of count -- do sanity check when take diff
|
|
Me@38
|
368 saveLowTimeStampCountInto( animatingPr->postSuspTSCLow );
|
|
Me@38
|
369 #endif
|
|
Me@30
|
370
|
|
Me@0
|
371 return;
|
|
Me@0
|
372 }
|
|
Me@0
|
373
|
|
Me@22
|
374
|
|
Me@22
|
375
|
|
Me@50
|
376 /*For this implementation of VMS, it may not make much sense to have the
|
|
Me@50
|
377 * system of requests for creating a new processor done this way.. but over
|
|
Me@50
|
378 * the scope of single-master, multi-master, mult-tasking, OS-implementing,
|
|
Me@50
|
379 * distributed-memory, and so on, this gives VMS implementation a chance to
|
|
Me@50
|
380 * do stuff before suspend, in the AppVP, and in the Master before the plugin
|
|
Me@50
|
381 * is called, as well as in the lang-lib before this is called, and in the
|
|
Me@50
|
382 * plugin. So, this gives both VMS and language implementations a chance to
|
|
Me@50
|
383 * intercept at various points and do order-dependent stuff.
|
|
Me@50
|
384 *Having a standard VMSNewPrReqData struc allows the language to create and
|
|
Me@50
|
385 * free the struc, while VMS knows how to get the newPr if it wants it, and
|
|
Me@50
|
386 * it lets the lang have lang-specific data related to creation transported
|
|
Me@50
|
387 * to the plugin.
|
|
Me@50
|
388 */
|
|
Me@50
|
389 void
|
|
Me@50
|
390 VMS__send_create_procr_req( void *semReqData, VirtProcr *reqstingPr )
|
|
Me@50
|
391 { VMSReqst req;
|
|
Me@50
|
392
|
|
Me@50
|
393 req.reqType = createReq;
|
|
Me@50
|
394 req.semReqData = semReqData;
|
|
Me@50
|
395 req.nextReqst = reqstingPr->requests;
|
|
Me@50
|
396 reqstingPr->requests = &req;
|
|
Me@50
|
397
|
|
Me@50
|
398 VMS__suspend_procr( reqstingPr );
|
|
Me@50
|
399 }
|
|
Me@50
|
400
|
|
Me@22
|
401
|
|
Me@38
|
402 /*
|
|
Me@22
|
403 *This adds a request to dissipate, then suspends the processor so that the
|
|
Me@22
|
404 * request handler will receive the request. The request handler is what
|
|
Me@22
|
405 * does the work of freeing memory and removing the processor from the
|
|
Me@22
|
406 * semantic environment's data structures.
|
|
Me@22
|
407 *The request handler also is what figures out when to shutdown the VMS
|
|
Me@22
|
408 * system -- which causes all the core loop threads to die, and returns from
|
|
Me@22
|
409 * the call that started up VMS to perform the work.
|
|
Me@22
|
410 *
|
|
Me@22
|
411 *This form is a bit misleading to understand if one is trying to figure out
|
|
Me@22
|
412 * how VMS works -- it looks like a normal function call, but inside it
|
|
Me@22
|
413 * sends a request to the request handler and suspends the processor, which
|
|
Me@22
|
414 * jumps out of the VMS__dissipate_procr function, and out of all nestings
|
|
Me@22
|
415 * above it, transferring the work of dissipating to the request handler,
|
|
Me@22
|
416 * which then does the actual work -- causing the processor that animated
|
|
Me@22
|
417 * the call of this function to disappear and the "hanging" state of this
|
|
Me@22
|
418 * function to just poof into thin air -- the virtual processor's trace
|
|
Me@22
|
419 * never returns from this call, but instead the virtual processor's trace
|
|
Me@22
|
420 * gets suspended in this call and all the virt processor's state disap-
|
|
Me@22
|
421 * pears -- making that suspend the last thing in the virt procr's trace.
|
|
Me@8
|
422 */
|
|
Me@8
|
423 void
|
|
Me@53
|
424 VMS__send_dissipate_req( VirtProcr *procrToDissipate )
|
|
Me@50
|
425 { VMSReqst req;
|
|
Me@22
|
426
|
|
Me@50
|
427 req.reqType = dissipate;
|
|
Me@50
|
428 req.nextReqst = procrToDissipate->requests;
|
|
Me@50
|
429 procrToDissipate->requests = &req;
|
|
Me@50
|
430
|
|
Me@22
|
431 VMS__suspend_procr( procrToDissipate );
|
|
Me@50
|
432 }
|
|
Me@50
|
433
|
|
Me@50
|
434
|
|
Me@50
|
435 /* "ext" designates that it's for use outside the VMS system -- should only
|
|
Me@50
|
436 * be called from main thread or other thread -- never from code animated by
|
|
Me@50
|
437 * a VMS virtual processor.
|
|
Me@50
|
438 *
|
|
Me@50
|
439 *Use this version to dissipate VPs created outside the VMS system.
|
|
Me@50
|
440 */
|
|
Me@50
|
441 void
|
|
Me@50
|
442 VMS_ext__dissipate_procr( VirtProcr *procrToDissipate )
|
|
Me@50
|
443 {
|
|
Me@50
|
444 //NOTE: initialData was given to the processor, so should either have
|
|
Me@50
|
445 // been alloc'd with VMS__malloc, or freed by the level above animPr.
|
|
Me@50
|
446 //So, all that's left to free here is the stack and the VirtProcr struc
|
|
Me@50
|
447 // itself
|
|
Me@50
|
448 //Note, should not stack-allocate initial data -- no guarantee, in
|
|
Me@50
|
449 // general that creating processor will outlive ones it creates.
|
|
Me@50
|
450 free( procrToDissipate->startOfStack );
|
|
Me@50
|
451 free( procrToDissipate );
|
|
Me@50
|
452 }
|
|
Me@50
|
453
|
|
Me@22
|
454
|
|
Me@22
|
455
|
|
Me@53
|
456 /*This call's name indicates that request is malloc'd -- so req handler
|
|
Me@53
|
457 * has to free any extra requests tacked on before a send, using this.
|
|
Me@53
|
458 *
|
|
Me@53
|
459 * This inserts the semantic-layer's request data into standard VMS carrier
|
|
Me@53
|
460 * request data-struct that is mallocd. The sem request doesn't need to
|
|
Me@53
|
461 * be malloc'd if this is called inside the same call chain before the
|
|
Me@53
|
462 * send of the last request is called.
|
|
Me@53
|
463 *
|
|
Me@53
|
464 *The request handler has to call VMS__free_VMSReq for any of these
|
|
Me@22
|
465 */
|
|
Me@22
|
466 inline void
|
|
Me@53
|
467 VMS__add_sem_request_in_mallocd_VMSReqst( void *semReqData,
|
|
Me@53
|
468 VirtProcr *callingPr )
|
|
Me@53
|
469 { VMSReqst *req;
|
|
Me@22
|
470
|
|
Me@53
|
471 req = VMS__malloc( sizeof(VMSReqst) );
|
|
Me@53
|
472 req->reqType = semantic;
|
|
Me@53
|
473 req->semReqData = semReqData;
|
|
Me@53
|
474 req->nextReqst = callingPr->requests;
|
|
Me@53
|
475 callingPr->requests = req;
|
|
Me@22
|
476 }
|
|
Me@22
|
477
|
|
Me@50
|
478 /*This inserts the semantic-layer's request data into standard VMS carrier
|
|
Me@50
|
479 * request data-struct is allocated on stack of this call & ptr to it sent
|
|
Me@50
|
480 * to plugin
|
|
Me@50
|
481 *Then it does suspend, to cause request to be sent.
|
|
Me@50
|
482 */
|
|
Me@50
|
483 inline void
|
|
Me@50
|
484 VMS__send_sem_request( void *semReqData, VirtProcr *callingPr )
|
|
Me@50
|
485 { VMSReqst req;
|
|
Me@22
|
486
|
|
Me@50
|
487 req.reqType = semantic;
|
|
Me@50
|
488 req.semReqData = semReqData;
|
|
Me@50
|
489 req.nextReqst = callingPr->requests;
|
|
Me@50
|
490 callingPr->requests = &req;
|
|
Me@50
|
491
|
|
Me@50
|
492 VMS__suspend_procr( callingPr );
|
|
Me@50
|
493 }
|
|
Me@50
|
494
|
|
Me@50
|
495
|
|
Me@50
|
496 inline void
|
|
Me@50
|
497 VMS__send_VMSSem_request( void *semReqData, VirtProcr *callingPr )
|
|
Me@50
|
498 { VMSReqst req;
|
|
Me@50
|
499
|
|
Me@50
|
500 req.reqType = VMSSemantic;
|
|
Me@50
|
501 req.semReqData = semReqData;
|
|
Me@50
|
502 req.nextReqst = callingPr->requests; //gab any other preceeding
|
|
Me@50
|
503 callingPr->requests = &req;
|
|
Me@50
|
504
|
|
Me@50
|
505 VMS__suspend_procr( callingPr );
|
|
Me@50
|
506 }
|
|
Me@50
|
507
|
|
Me@120
|
508 void inline
|
|
Me@120
|
509 VMS__send_inter_plugin_req( void *reqData, int32 targetMaster,
|
|
Me@120
|
510 VirtProcr *requestingMaster )
|
|
Me@120
|
511 { _VMSMasterEnv->interMasterRequestsFor[targetMaster] =
|
|
Me@120
|
512 (InterMasterReqst *) reqData;
|
|
Me@120
|
513 }
|
|
Me@120
|
514
|
|
Me@120
|
515 void inline
|
|
Me@120
|
516 VMS__send_inter_VMSCore_req( InterVMSCoreReqst *reqData,
|
|
Me@120
|
517 int32 targetMaster, VirtProcr *requestingMaster )
|
|
Me@120
|
518 { _VMSMasterEnv->interMasterRequestsFor[targetMaster] =
|
|
Me@120
|
519 (InterMasterReqst *) reqData;
|
|
Me@120
|
520 }
|
|
Me@50
|
521
|
|
Me@50
|
522 /*
|
|
Me@38
|
523 */
|
|
Me@24
|
524 VMSReqst *
|
|
Me@50
|
525 VMS__take_next_request_out_of( VirtProcr *procrWithReq )
|
|
Me@31
|
526 { VMSReqst *req;
|
|
Me@31
|
527
|
|
Me@31
|
528 req = procrWithReq->requests;
|
|
Me@38
|
529 if( req == NULL ) return NULL;
|
|
Me@31
|
530
|
|
Me@31
|
531 procrWithReq->requests = procrWithReq->requests->nextReqst;
|
|
Me@50
|
532 return req;
|
|
Me@24
|
533 }
|
|
Me@22
|
534
|
|
Me@24
|
535
|
|
Me@24
|
536 inline void *
|
|
Me@24
|
537 VMS__take_sem_reqst_from( VMSReqst *req )
|
|
Me@24
|
538 {
|
|
Me@24
|
539 return req->semReqData;
|
|
Me@24
|
540 }
|
|
Me@24
|
541
|
|
Me@24
|
542
|
|
Me@24
|
543
|
|
Me@50
|
544 /* This is for OS requests and VMS infrastructure requests, such as to create
|
|
Me@50
|
545 * a probe -- a probe is inside the heart of VMS-core, it's not part of any
|
|
Me@50
|
546 * language -- but it's also a semantic thing that's triggered from and used
|
|
Me@50
|
547 * in the application.. so it crosses abstractions.. so, need some special
|
|
Me@50
|
548 * pattern here for handling such requests.
|
|
Me@52
|
549 * Doing this just like it were a second language sharing VMS-core.
|
|
Me@52
|
550 *
|
|
Me@50
|
551 * This is called from the language's request handler when it sees a request
|
|
Me@50
|
552 * of type VMSSemReq
|
|
Me@52
|
553 *
|
|
Me@52
|
554 * TODO: Later change this, to give probes their own separate plugin & have
|
|
Me@52
|
555 * VMS-core steer the request to appropriate plugin
|
|
Me@52
|
556 * Do the same for OS calls -- look later at it..
|
|
Me@50
|
557 */
|
|
Me@50
|
558 void inline
|
|
Me@50
|
559 VMS__handle_VMSSemReq( VMSReqst *req, VirtProcr *requestingPr, void *semEnv,
|
|
Me@50
|
560 ResumePrFnPtr resumePrFnPtr )
|
|
Me@50
|
561 { VMSSemReq *semReq;
|
|
Me@50
|
562 IntervalProbe *newProbe;
|
|
Me@24
|
563
|
|
Me@50
|
564 semReq = req->semReqData;
|
|
Me@24
|
565
|
|
msach@135
|
566 switch(semReq->reqType){
|
|
msach@135
|
567 case createProbe:
|
|
msach@135
|
568 newProbe = VMS__malloc( sizeof(IntervalProbe) );
|
|
msach@135
|
569 newProbe->nameStr = VMS__strDup( (char*)semReq->data );
|
|
msach@135
|
570 newProbe->hist = NULL;
|
|
msach@135
|
571 newProbe->schedChoiceWasRecorded = FALSE;
|
|
Me@53
|
572
|
|
msach@135
|
573 //This runs in masterVP, so no race-condition worries
|
|
msach@135
|
574 newProbe->probeID =
|
|
msach@135
|
575 addToDynArray( newProbe, _VMSMasterEnv->dynIntervalProbesInfo );
|
|
msach@135
|
576 requestingPr->dataRetFromReq = newProbe;
|
|
msach@135
|
577 break;
|
|
msach@135
|
578 case interMasterReqst:
|
|
msach@135
|
579 sendInterMasterReqst(semReq->receiverID,
|
|
msach@135
|
580 (InterMasterReqst*)semReq->data);
|
|
msach@135
|
581 break;
|
|
msach@135
|
582 default:
|
|
msach@135
|
583 break;
|
|
msach@135
|
584 }
|
|
msach@135
|
585
|
|
msach@135
|
586 resumePrFnPtr( requestingPr, semEnv );
|
|
Me@22
|
587 }
|
|
Me@22
|
588
|
|
Me@22
|
589
|
|
Me@22
|
590
|
|
Me@24
|
591 /*This must be called by the request handler plugin -- it cannot be called
|
|
Me@24
|
592 * from the semantic library "dissipate processor" function -- instead, the
|
|
Me@50
|
593 * semantic layer has to generate a request, and the plug-in calls this
|
|
Me@24
|
594 * function.
|
|
Me@24
|
595 *The reason is that this frees the virtual processor's stack -- which is
|
|
Me@24
|
596 * still in use inside semantic library calls!
|
|
Me@24
|
597 *
|
|
Me@24
|
598 *This frees or recycles all the state owned by and comprising the VMS
|
|
Me@24
|
599 * portion of the animating virtual procr. The request handler must first
|
|
Me@24
|
600 * free any semantic data created for the processor that didn't use the
|
|
Me@24
|
601 * VMS_malloc mechanism. Then it calls this, which first asks the malloc
|
|
Me@24
|
602 * system to disown any state that did use VMS_malloc, and then frees the
|
|
Me@24
|
603 * statck and the processor-struct itself.
|
|
Me@24
|
604 *If the dissipated processor is the sole (remaining) owner of VMS__malloc'd
|
|
Me@24
|
605 * state, then that state gets freed (or sent to recycling) as a side-effect
|
|
Me@24
|
606 * of dis-owning it.
|
|
Me@24
|
607 */
|
|
Me@24
|
608 void
|
|
Me@53
|
609 VMS__dissipate_procr( VirtProcr *animatingPr )
|
|
Me@24
|
610 {
|
|
Me@24
|
611 //dis-own all locations owned by this processor, causing to be freed
|
|
Me@24
|
612 // any locations that it is (was) sole owner of
|
|
Me@29
|
613 //TODO: implement VMS__malloc system, including "give up ownership"
|
|
Me@24
|
614
|
|
Me@24
|
615
|
|
Me@24
|
616 //NOTE: initialData was given to the processor, so should either have
|
|
Me@24
|
617 // been alloc'd with VMS__malloc, or freed by the level above animPr.
|
|
Me@24
|
618 //So, all that's left to free here is the stack and the VirtProcr struc
|
|
Me@24
|
619 // itself
|
|
Me@50
|
620 //Note, should not stack-allocate initial data -- no guarantee, in
|
|
Me@50
|
621 // general that creating processor will outlive ones it creates.
|
|
msach@135
|
622
|
|
msach@135
|
623
|
|
msach@135
|
624 /*
|
|
msach@135
|
625 * call the core specific version, because the creating master can already be dead
|
|
msach@135
|
626 */
|
|
msach@135
|
627 //VMS__free_in_lib( animatingPr->startOfStack, animatingPr );
|
|
msach@135
|
628 //VMS__free_in_lib( animatingPr, animatingPr);
|
|
Me@24
|
629 }
|
|
Me@24
|
630
|
|
Me@24
|
631
|
|
Me@53
|
632 //TODO: look at architecting cleanest separation between request handler
|
|
Me@29
|
633 // and master loop, for dissipate, create, shutdown, and other non-semantic
|
|
Me@29
|
634 // requests. Issue is chain: one removes requests from AppVP, one dispatches
|
|
Me@29
|
635 // on type of request, and one handles each type.. but some types require
|
|
Me@29
|
636 // action from both request handler and master loop -- maybe just give the
|
|
Me@29
|
637 // request handler calls like: VMS__handle_X_request_type
|
|
Me@24
|
638
|
|
Me@29
|
639
|
|
Me@29
|
640 /*This is called by the semantic layer's request handler when it decides its
|
|
Me@29
|
641 * time to shut down the VMS system. Calling this causes the core loop OS
|
|
Me@29
|
642 * threads to exit, which unblocks the entry-point function that started up
|
|
Me@29
|
643 * VMS, and allows it to grab the result and return to the original single-
|
|
Me@29
|
644 * threaded application.
|
|
Me@22
|
645 *
|
|
Me@29
|
646 *The _VMSMasterEnv is needed by this shut down function, so the create-seed-
|
|
Me@29
|
647 * and-wait function has to free a bunch of stuff after it detects the
|
|
Me@29
|
648 * threads have all died: the masterEnv, the thread-related locations,
|
|
Me@29
|
649 * masterVP any AppVPs that might still be allocated and sitting in the
|
|
Me@29
|
650 * semantic environment, or have been orphaned in the _VMSWorkQ.
|
|
Me@29
|
651 *
|
|
Me@53
|
652 *NOTE: the semantic plug-in is expected to use VMS__malloc to get all the
|
|
Me@29
|
653 * locations it needs, and give ownership to masterVP. Then, they will be
|
|
Me@53
|
654 * automatically freed.
|
|
Me@22
|
655 *
|
|
Me@29
|
656 *In here,create one core-loop shut-down processor for each core loop and put
|
|
Me@31
|
657 * them all directly into the readyToAnimateQ.
|
|
Me@29
|
658 *Note, this function can ONLY be called after the semantic environment no
|
|
Me@29
|
659 * longer cares if AppVPs get animated after the point this is called. In
|
|
Me@29
|
660 * other words, this can be used as an abort, or else it should only be
|
|
Me@29
|
661 * called when all AppVPs have finished dissipate requests -- only at that
|
|
Me@29
|
662 * point is it sure that all results have completed.
|
|
Me@22
|
663 */
|
|
Me@22
|
664 void
|
|
Me@53
|
665 VMS__shutdown()
|
|
Me@8
|
666 { int coreIdx;
|
|
Me@14
|
667 VirtProcr *shutDownPr;
|
|
Me@22
|
668
|
|
Me@29
|
669 //create the shutdown processors, one for each core loop -- put them
|
|
Me@31
|
670 // directly into the Q -- each core will die when gets one
|
|
Me@8
|
671 for( coreIdx=0; coreIdx < NUM_CORES; coreIdx++ )
|
|
Me@50
|
672 { //Note, this is running in the master
|
|
Me@29
|
673 shutDownPr = VMS__create_procr( &endOSThreadFn, NULL );
|
|
Me@55
|
674 writeVMSQ( shutDownPr, _VMSMasterEnv->readyToAnimateQs[coreIdx] );
|
|
Me@8
|
675 }
|
|
Me@22
|
676
|
|
Me@12
|
677 }
|
|
Me@12
|
678
|
|
Me@12
|
679
|
|
Me@29
|
680 /*Am trying to be cute, avoiding IF statement in coreLoop that checks for
|
|
Me@29
|
681 * a special shutdown procr. Ended up with extra-complex shutdown sequence.
|
|
Me@29
|
682 *This function has the sole purpose of setting the stack and framePtr
|
|
Me@29
|
683 * to the coreLoop's stack and framePtr.. it does that then jumps to the
|
|
Me@29
|
684 * core loop's shutdown point -- might be able to just call Pthread_exit
|
|
Me@30
|
685 * from here, but am going back to the pthread's stack and setting everything
|
|
Me@29
|
686 * up just as if it never jumped out, before calling pthread_exit.
|
|
Me@29
|
687 *The end-point of core loop will free the stack and so forth of the
|
|
Me@29
|
688 * processor that animates this function, (this fn is transfering the
|
|
Me@29
|
689 * animator of the AppVP that is in turn animating this function over
|
|
Me@29
|
690 * to core loop function -- note that this slices out a level of virtual
|
|
Me@29
|
691 * processors).
|
|
Me@29
|
692 */
|
|
Me@29
|
693 void
|
|
Me@29
|
694 endOSThreadFn( void *initData, VirtProcr *animatingPr )
|
|
msach@71
|
695 {
|
|
msach@75
|
696 #ifdef SEQUENTIAL
|
|
msach@75
|
697 asmTerminateCoreLoopSeq(animatingPr);
|
|
msach@75
|
698 #else
|
|
msach@71
|
699 asmTerminateCoreLoop(animatingPr);
|
|
msach@75
|
700 #endif
|
|
Me@30
|
701 }
|
|
Me@29
|
702
|
|
Me@29
|
703
|
|
Me@53
|
704 /*This is called from the startup & shutdown
|
|
Me@24
|
705 */
|
|
Me@24
|
706 void
|
|
Me@53
|
707 VMS__cleanup_at_end_of_shutdown()
|
|
Me@31
|
708 {
|
|
msach@78
|
709 //unused
|
|
msach@78
|
710 //VMSQueueStruc **readyToAnimateQs;
|
|
msach@78
|
711 //int coreIdx;
|
|
msach@78
|
712 //VirtProcr **masterVPs;
|
|
msach@78
|
713 //SchedSlot ***allSchedSlots; //ptr to array of ptrs
|
|
Me@31
|
714
|
|
Me@65
|
715 //Before getting rid of everything, print out any measurements made
|
|
msach@69
|
716 forAllInDynArrayDo( _VMSMasterEnv->measHistsInfo, (DynArrayFnPtr)&printHist );
|
|
msach@78
|
717 forAllInDynArrayDo( _VMSMasterEnv->measHistsInfo, (DynArrayFnPtr)&saveHistToFile);
|
|
Me@68
|
718 //forAllInDynArrayDo( _VMSMasterEnv->measHistsInfo, &freeHistExt );
|
|
Me@65
|
719 #ifdef MEAS__TIME_PLUGIN
|
|
Me@68
|
720 printHist( _VMSMasterEnv->reqHdlrLowTimeHist );
|
|
msach@84
|
721 saveHistToFile( _VMSMasterEnv->reqHdlrLowTimeHist );
|
|
Me@68
|
722 printHist( _VMSMasterEnv->reqHdlrHighTimeHist );
|
|
msach@79
|
723 saveHistToFile( _VMSMasterEnv->reqHdlrHighTimeHist );
|
|
Me@68
|
724 freeHistExt( _VMSMasterEnv->reqHdlrLowTimeHist );
|
|
Me@68
|
725 freeHistExt( _VMSMasterEnv->reqHdlrHighTimeHist );
|
|
Me@65
|
726 #endif
|
|
Me@65
|
727 #ifdef MEAS__TIME_MALLOC
|
|
Me@65
|
728 printHist( _VMSMasterEnv->mallocTimeHist );
|
|
msach@79
|
729 saveHistToFile( _VMSMasterEnv->mallocTimeHist );
|
|
Me@65
|
730 printHist( _VMSMasterEnv->freeTimeHist );
|
|
msach@79
|
731 saveHistToFile( _VMSMasterEnv->freeTimeHist );
|
|
Me@65
|
732 freeHistExt( _VMSMasterEnv->mallocTimeHist );
|
|
Me@65
|
733 freeHistExt( _VMSMasterEnv->freeTimeHist );
|
|
Me@65
|
734 #endif
|
|
Me@65
|
735 #ifdef MEAS__TIME_MASTER_LOCK
|
|
Me@65
|
736 printHist( _VMSMasterEnv->masterLockLowTimeHist );
|
|
Me@65
|
737 printHist( _VMSMasterEnv->masterLockHighTimeHist );
|
|
Me@65
|
738 #endif
|
|
Me@65
|
739 #ifdef MEAS__TIME_MASTER
|
|
Me@65
|
740 printHist( _VMSMasterEnv->pluginTimeHist );
|
|
Me@65
|
741 for( coreIdx = 0; coreIdx < NUM_CORES; coreIdx++ )
|
|
Me@65
|
742 {
|
|
Me@65
|
743 freeVMSQ( readyToAnimateQs[ coreIdx ] );
|
|
Me@65
|
744 //master VPs were created external to VMS, so use external free
|
|
Me@65
|
745 VMS__dissipate_procr( masterVPs[ coreIdx ] );
|
|
Me@65
|
746
|
|
Me@65
|
747 freeSchedSlots( allSchedSlots[ coreIdx ] );
|
|
Me@65
|
748 }
|
|
Me@65
|
749 #endif
|
|
Me@65
|
750 #ifdef MEAS__TIME_STAMP_SUSP
|
|
Me@65
|
751 printHist( _VMSMasterEnv->pluginTimeHist );
|
|
Me@65
|
752 for( coreIdx = 0; coreIdx < NUM_CORES; coreIdx++ )
|
|
Me@65
|
753 {
|
|
Me@65
|
754 freeVMSQ( readyToAnimateQs[ coreIdx ] );
|
|
Me@65
|
755 //master VPs were created external to VMS, so use external free
|
|
Me@65
|
756 VMS__dissipate_procr( masterVPs[ coreIdx ] );
|
|
Me@65
|
757
|
|
Me@65
|
758 freeSchedSlots( allSchedSlots[ coreIdx ] );
|
|
Me@65
|
759 }
|
|
Me@65
|
760 #endif
|
|
Me@65
|
761
|
|
Me@53
|
762 //All the environment data has been allocated with VMS__malloc, so just
|
|
Me@53
|
763 // free its internal big-chunk and all inside it disappear.
|
|
Me@53
|
764 /*
|
|
Me@31
|
765 readyToAnimateQs = _VMSMasterEnv->readyToAnimateQs;
|
|
Me@31
|
766 masterVPs = _VMSMasterEnv->masterVPs;
|
|
Me@31
|
767 allSchedSlots = _VMSMasterEnv->allSchedSlots;
|
|
Me@31
|
768
|
|
Me@31
|
769 for( coreIdx = 0; coreIdx < NUM_CORES; coreIdx++ )
|
|
Me@24
|
770 {
|
|
Me@55
|
771 freeVMSQ( readyToAnimateQs[ coreIdx ] );
|
|
Me@50
|
772 //master VPs were created external to VMS, so use external free
|
|
Me@53
|
773 VMS__dissipate_procr( masterVPs[ coreIdx ] );
|
|
Me@31
|
774
|
|
Me@31
|
775 freeSchedSlots( allSchedSlots[ coreIdx ] );
|
|
Me@24
|
776 }
|
|
Me@31
|
777
|
|
Me@53
|
778 VMS__free( _VMSMasterEnv->readyToAnimateQs );
|
|
Me@53
|
779 VMS__free( _VMSMasterEnv->masterVPs );
|
|
Me@53
|
780 VMS__free( _VMSMasterEnv->allSchedSlots );
|
|
Me@50
|
781
|
|
Me@50
|
782 //============================= MEASUREMENT STUFF ========================
|
|
Me@50
|
783 #ifdef STATS__TURN_ON_PROBES
|
|
Me@53
|
784 freeDynArrayDeep( _VMSMasterEnv->dynIntervalProbesInfo, &VMS__free_probe);
|
|
Me@50
|
785 #endif
|
|
Me@50
|
786 //========================================================================
|
|
Me@53
|
787 */
|
|
Me@53
|
788 //These are the only two that use system free
|
|
msach@135
|
789 int i;
|
|
msach@135
|
790 for(i=0; i<NUM_CORES; i++)
|
|
msach@135
|
791 VMS_ext__free_free_list( _VMSMasterEnv->freeListHead[i]);
|
|
Me@53
|
792 free( (void *)_VMSMasterEnv );
|
|
Me@24
|
793 }
|
|
Me@24
|
794
|
|
Me@54
|
795
|
|
Me@54
|
796 //================================
|
|
Me@54
|
797
|
|
Me@54
|
798
|
|
Me@54
|
799 /*Later, improve this -- for now, just exits the application after printing
|
|
Me@54
|
800 * the error message.
|
|
Me@54
|
801 */
|
|
Me@54
|
802 void
|
|
Me@54
|
803 VMS__throw_exception( char *msgStr, VirtProcr *reqstPr, VMSExcp *excpData )
|
|
Me@54
|
804 {
|
|
msach@69
|
805 printf("%s",msgStr);
|
|
Me@54
|
806 fflush(stdin);
|
|
Me@54
|
807 exit(1);
|
|
Me@54
|
808 }
|
|
Me@54
|
809
|
