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