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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 memset( _VMSMasterEnv, 0, 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 _VMSMasterEnv->freeLists = VMS_ext__create_free_list();
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110
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111
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112 //============================= MEASUREMENT STUFF ========================
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113 #ifdef MEAS__TIME_MALLOC
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114 _VMSMasterEnv->mallocTimeHist = makeFixedBinHistExt( 100, 0, 30,
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115 "malloc_time_hist");
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116 _VMSMasterEnv->freeTimeHist = makeFixedBinHistExt( 100, 0, 30,
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117 "free_time_hist");
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118 #endif
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119 #ifdef MEAS__TIME_PLUGIN
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120 _VMSMasterEnv->reqHdlrLowTimeHist = makeFixedBinHistExt( 100, 0, 200,
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121 "plugin_low_time_hist");
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122 _VMSMasterEnv->reqHdlrHighTimeHist = makeFixedBinHistExt( 100, 0, 200,
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123 "plugin_high_time_hist");
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124 #endif
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125 //========================================================================
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126
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127 //===================== Only VMS__malloc after this ====================
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128 masterEnv = (MasterEnv*)_VMSMasterEnv;
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129
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130 //Make a readyToAnimateQ for each core loop
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131 readyToAnimateQs = VMS__malloc( NUM_CORES * sizeof(VMSQueueStruc *) );
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132 masterVPs = VMS__malloc( NUM_CORES * sizeof(VirtProcr *) );
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133
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134 //One array for each core, 3 in array, core's masterVP scheds all
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135 allSchedSlots = VMS__malloc( NUM_CORES * sizeof(SchedSlot *) );
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136
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137 _VMSMasterEnv->numProcrsCreated = 0; //used by create procr
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138 for( coreIdx = 0; coreIdx < NUM_CORES; coreIdx++ )
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139 {
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140 readyToAnimateQs[ coreIdx ] = makeVMSQ();
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141
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142 //Q: should give masterVP core-specific info as its init data?
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143 masterVPs[ coreIdx ] = VMS__create_procr( (VirtProcrFnPtr)&masterLoop, (void*)masterEnv );
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144 masterVPs[ coreIdx ]->coreAnimatedBy = coreIdx;
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145 allSchedSlots[ coreIdx ] = create_sched_slots(); //makes for one core
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146 _VMSMasterEnv->numMasterInARow[ coreIdx ] = 0;
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147 _VMSMasterEnv->workStealingGates[ coreIdx ] = NULL;
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148 }
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149 _VMSMasterEnv->readyToAnimateQs = readyToAnimateQs;
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150 _VMSMasterEnv->masterVPs = masterVPs;
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151 _VMSMasterEnv->masterLock = UNLOCKED;
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152 _VMSMasterEnv->allSchedSlots = allSchedSlots;
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153 _VMSMasterEnv->workStealingLock = UNLOCKED;
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154
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155
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156 //Aug 19, 2010: no longer need to place initial masterVP into queue
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157 // because coreLoop now controls -- animates its masterVP when no work
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158
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159
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160 //============================= MEASUREMENT STUFF ========================
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161 #ifdef STATS__TURN_ON_PROBES
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162 _VMSMasterEnv->dynIntervalProbesInfo =
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163 makePrivDynArrayOfSize( (void***)&(_VMSMasterEnv->intervalProbes), 200);
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164
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165 _VMSMasterEnv->probeNameHashTbl = makeHashTable( 1000, &VMS__free );
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166
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167 //put creation time directly into master env, for fast retrieval
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168 struct timeval timeStamp;
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169 gettimeofday( &(timeStamp), NULL);
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170 _VMSMasterEnv->createPtInSecs =
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171 timeStamp.tv_sec +(timeStamp.tv_usec/1000000.0);
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172 #endif
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173 #ifdef MEAS__TIME_MASTER_LOCK
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174 _VMSMasterEnv->masterLockLowTimeHist = makeFixedBinHist( 50, 0, 2,
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175 "master lock low time hist");
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176 _VMSMasterEnv->masterLockHighTimeHist = makeFixedBinHist( 50, 0, 100,
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177 "master lock high time hist");
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178 #endif
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179
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180 MakeTheMeasHists();
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181 //========================================================================
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182
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183 }
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184
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185 SchedSlot **
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186 create_sched_slots()
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187 { SchedSlot **schedSlots;
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188 int i;
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189
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190 schedSlots = VMS__malloc( NUM_SCHED_SLOTS * sizeof(SchedSlot *) );
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191
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192 for( i = 0; i < NUM_SCHED_SLOTS; i++ )
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193 {
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194 schedSlots[i] = VMS__malloc( sizeof(SchedSlot) );
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195
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196 //Set state to mean "handling requests done, slot needs filling"
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197 schedSlots[i]->workIsDone = FALSE;
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198 schedSlots[i]->needsProcrAssigned = TRUE;
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199 }
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200 return schedSlots;
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201 }
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202
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203
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204 void
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205 freeSchedSlots( SchedSlot **schedSlots )
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206 { int i;
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207 for( i = 0; i < NUM_SCHED_SLOTS; i++ )
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208 {
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209 VMS__free( schedSlots[i] );
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210 }
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211 VMS__free( schedSlots );
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212 }
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213
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214
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215 void
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216 create_the_coreLoop_OS_threads()
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217 {
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218 //========================================================================
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219 // Create the Threads
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220 int coreIdx, retCode;
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221
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222 //Need the threads to be created suspended, and wait for a signal
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223 // before proceeding -- gives time after creating to initialize other
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224 // stuff before the coreLoops set off.
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225 _VMSMasterEnv->setupComplete = 0;
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226
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227 //Make the threads that animate the core loops
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228 for( coreIdx=0; coreIdx < NUM_CORES; coreIdx++ )
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229 { coreLoopThdParams[coreIdx] = VMS__malloc( sizeof(ThdParams) );
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230 coreLoopThdParams[coreIdx]->coreNum = coreIdx;
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231
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232 retCode =
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233 pthread_create( &(coreLoopThdHandles[coreIdx]),
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234 thdAttrs,
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235 &coreLoop,
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236 (void *)(coreLoopThdParams[coreIdx]) );
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237 if(retCode){printf("ERROR creating thread: %d\n", retCode); exit(1);}
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238 }
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239 }
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240
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241 /*Semantic layer calls this when it want the system to start running..
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242 *
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243 *This starts the core loops running then waits for them to exit.
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244 */
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245 void
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246 VMS__start_the_work_then_wait_until_done()
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247 { int coreIdx;
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248 //Start the core loops running
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249
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250 //tell the core loop threads that setup is complete
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251 //get lock, to lock out any threads still starting up -- they'll see
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252 // that setupComplete is true before entering while loop, and so never
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253 // wait on the condition
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254 pthread_mutex_lock( &suspendLock );
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255 _VMSMasterEnv->setupComplete = 1;
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256 pthread_mutex_unlock( &suspendLock );
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257 pthread_cond_broadcast( &suspend_cond );
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258
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259
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260 //wait for all to complete
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261 for( coreIdx=0; coreIdx < NUM_CORES; coreIdx++ )
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262 {
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263 pthread_join( coreLoopThdHandles[coreIdx], NULL );
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264 }
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265
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266 //NOTE: do not clean up VMS env here -- semantic layer has to have
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267 // a chance to clean up its environment first, then do a call to free
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268 // the Master env and rest of VMS locations
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269 }
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270
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271 #ifdef SEQUENTIAL
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272 /*Only difference between version with an OS thread pinned to each core and
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273 * the sequential version of VMS is VMS__init_Seq, this, and coreLoop_Seq.
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274 */
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275 void
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276 VMS__start_the_work_then_wait_until_done_Seq()
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277 {
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278 //Instead of un-suspending threads, just call the one and only
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279 // core loop (sequential version), in the main thread.
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280 coreLoop_Seq( NULL );
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281 flushRegisters();
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282
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283 }
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284 #endif
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285
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286 inline VirtProcr *
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287 VMS__create_procr( VirtProcrFnPtr fnPtr, void *initialData )
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288 { VirtProcr *newPr;
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289 void *stackLocs;
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290
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291 newPr = VMS__malloc( sizeof(VirtProcr) );
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292 stackLocs = VMS__malloc( VIRT_PROCR_STACK_SIZE );
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293 if( stackLocs == 0 )
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294 { perror("VMS__malloc stack"); exit(1); }
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295
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296 return create_procr_helper( newPr, fnPtr, initialData, stackLocs );
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297 }
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298
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299 /* "ext" designates that it's for use outside the VMS system -- should only
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300 * be called from main thread or other thread -- never from code animated by
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301 * a VMS virtual processor.
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302 */
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303 inline VirtProcr *
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304 VMS_ext__create_procr( VirtProcrFnPtr fnPtr, void *initialData )
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305 { VirtProcr *newPr;
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306 char *stackLocs;
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307
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308 newPr = malloc( sizeof(VirtProcr) );
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309 stackLocs = malloc( VIRT_PROCR_STACK_SIZE );
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310 if( stackLocs == 0 )
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311 { perror("malloc stack"); exit(1); }
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312
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313 return create_procr_helper( newPr, fnPtr, initialData, stackLocs );
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314 }
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315
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316
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317 /*Anticipating multi-tasking
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318 */
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319 void *
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320 VMS__give_sem_env_for( VirtProcr *animPr )
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321 {
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322 return _VMSMasterEnv->semanticEnv;
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323 }
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324 //===========================================================================
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Me@26
|
325 /*there is a label inside this function -- save the addr of this label in
|
|
Me@0
|
326 * the callingPr struc, as the pick-up point from which to start the next
|
|
Me@0
|
327 * work-unit for that procr. If turns out have to save registers, then
|
|
Me@0
|
328 * save them in the procr struc too. Then do assembly jump to the CoreLoop's
|
|
Me@0
|
329 * "done with work-unit" label. The procr struc is in the request in the
|
|
Me@0
|
330 * slave that animated the just-ended work-unit, so all the state is saved
|
|
Me@0
|
331 * there, and will get passed along, inside the request handler, to the
|
|
Me@0
|
332 * next work-unit for that procr.
|
|
Me@0
|
333 */
|
|
Me@8
|
334 void
|
|
Me@38
|
335 VMS__suspend_procr( VirtProcr *animatingPr )
|
|
Me@55
|
336 {
|
|
Me@0
|
337
|
|
Me@14
|
338 //The request to master will cause this suspended virt procr to get
|
|
Me@14
|
339 // scheduled again at some future point -- to resume, core loop jumps
|
|
Me@14
|
340 // to the resume point (below), which causes restore of saved regs and
|
|
Me@14
|
341 // "return" from this call.
|
|
msach@71
|
342 //animatingPr->nextInstrPt = &&ResumePt;
|
|
Me@1
|
343
|
|
Me@1
|
344 //return ownership of the virt procr and sched slot to Master virt pr
|
|
Me@38
|
345 animatingPr->schedSlot->workIsDone = TRUE;
|
|
Me@1
|
346
|
|
Me@41
|
347 //=========================== Measurement stuff ========================
|
|
Me@38
|
348 #ifdef MEAS__TIME_STAMP_SUSP
|
|
Me@41
|
349 //record time stamp: compare to time-stamp recorded below
|
|
Me@38
|
350 saveLowTimeStampCountInto( animatingPr->preSuspTSCLow );
|
|
Me@38
|
351 #endif
|
|
Me@41
|
352 //=======================================================================
|
|
Me@38
|
353
|
|
msach@71
|
354 switchToCoreLoop(animatingPr);
|
|
msach@71
|
355 flushRegisters();
|
|
Me@55
|
356
|
|
Me@55
|
357 //=======================================================================
|
|
msach@71
|
358
|
|
Me@38
|
359 #ifdef MEAS__TIME_STAMP_SUSP
|
|
Me@41
|
360 //NOTE: only take low part of count -- do sanity check when take diff
|
|
Me@38
|
361 saveLowTimeStampCountInto( animatingPr->postSuspTSCLow );
|
|
Me@38
|
362 #endif
|
|
Me@38
|
363
|
|
Me@0
|
364 return;
|
|
Me@0
|
365 }
|
|
Me@0
|
366
|
|
Me@22
|
367
|
|
Me@22
|
368
|
|
Me@50
|
369 /*For this implementation of VMS, it may not make much sense to have the
|
|
Me@50
|
370 * system of requests for creating a new processor done this way.. but over
|
|
Me@50
|
371 * the scope of single-master, multi-master, mult-tasking, OS-implementing,
|
|
Me@50
|
372 * distributed-memory, and so on, this gives VMS implementation a chance to
|
|
Me@50
|
373 * do stuff before suspend, in the AppVP, and in the Master before the plugin
|
|
Me@50
|
374 * is called, as well as in the lang-lib before this is called, and in the
|
|
Me@50
|
375 * plugin. So, this gives both VMS and language implementations a chance to
|
|
Me@50
|
376 * intercept at various points and do order-dependent stuff.
|
|
Me@50
|
377 *Having a standard VMSNewPrReqData struc allows the language to create and
|
|
Me@50
|
378 * free the struc, while VMS knows how to get the newPr if it wants it, and
|
|
Me@50
|
379 * it lets the lang have lang-specific data related to creation transported
|
|
Me@50
|
380 * to the plugin.
|
|
Me@50
|
381 */
|
|
Me@50
|
382 void
|
|
Me@50
|
383 VMS__send_create_procr_req( void *semReqData, VirtProcr *reqstingPr )
|
|
Me@50
|
384 { VMSReqst req;
|
|
Me@50
|
385
|
|
Me@50
|
386 req.reqType = createReq;
|
|
Me@50
|
387 req.semReqData = semReqData;
|
|
Me@50
|
388 req.nextReqst = reqstingPr->requests;
|
|
Me@50
|
389 reqstingPr->requests = &req;
|
|
Me@50
|
390
|
|
Me@50
|
391 VMS__suspend_procr( reqstingPr );
|
|
Me@50
|
392 }
|
|
Me@50
|
393
|
|
Me@22
|
394
|
|
Me@38
|
395 /*
|
|
Me@22
|
396 *This adds a request to dissipate, then suspends the processor so that the
|
|
Me@22
|
397 * request handler will receive the request. The request handler is what
|
|
Me@22
|
398 * does the work of freeing memory and removing the processor from the
|
|
Me@22
|
399 * semantic environment's data structures.
|
|
Me@22
|
400 *The request handler also is what figures out when to shutdown the VMS
|
|
Me@22
|
401 * system -- which causes all the core loop threads to die, and returns from
|
|
Me@22
|
402 * the call that started up VMS to perform the work.
|
|
Me@22
|
403 *
|
|
Me@22
|
404 *This form is a bit misleading to understand if one is trying to figure out
|
|
Me@22
|
405 * how VMS works -- it looks like a normal function call, but inside it
|
|
Me@22
|
406 * sends a request to the request handler and suspends the processor, which
|
|
Me@22
|
407 * jumps out of the VMS__dissipate_procr function, and out of all nestings
|
|
Me@22
|
408 * above it, transferring the work of dissipating to the request handler,
|
|
Me@22
|
409 * which then does the actual work -- causing the processor that animated
|
|
Me@22
|
410 * the call of this function to disappear and the "hanging" state of this
|
|
Me@22
|
411 * function to just poof into thin air -- the virtual processor's trace
|
|
Me@22
|
412 * never returns from this call, but instead the virtual processor's trace
|
|
Me@22
|
413 * gets suspended in this call and all the virt processor's state disap-
|
|
Me@22
|
414 * pears -- making that suspend the last thing in the virt procr's trace.
|
|
Me@8
|
415 */
|
|
Me@8
|
416 void
|
|
Me@53
|
417 VMS__send_dissipate_req( VirtProcr *procrToDissipate )
|
|
Me@50
|
418 { VMSReqst req;
|
|
Me@22
|
419
|
|
Me@50
|
420 req.reqType = dissipate;
|
|
Me@50
|
421 req.nextReqst = procrToDissipate->requests;
|
|
Me@50
|
422 procrToDissipate->requests = &req;
|
|
Me@50
|
423
|
|
Me@22
|
424 VMS__suspend_procr( procrToDissipate );
|
|
Me@50
|
425 }
|
|
Me@50
|
426
|
|
Me@50
|
427
|
|
Me@50
|
428 /* "ext" designates that it's for use outside the VMS system -- should only
|
|
Me@50
|
429 * be called from main thread or other thread -- never from code animated by
|
|
Me@50
|
430 * a VMS virtual processor.
|
|
Me@50
|
431 *
|
|
Me@50
|
432 *Use this version to dissipate VPs created outside the VMS system.
|
|
Me@50
|
433 */
|
|
Me@50
|
434 void
|
|
Me@50
|
435 VMS_ext__dissipate_procr( VirtProcr *procrToDissipate )
|
|
Me@50
|
436 {
|
|
Me@50
|
437 //NOTE: initialData was given to the processor, so should either have
|
|
Me@50
|
438 // been alloc'd with VMS__malloc, or freed by the level above animPr.
|
|
Me@50
|
439 //So, all that's left to free here is the stack and the VirtProcr struc
|
|
Me@50
|
440 // itself
|
|
Me@50
|
441 //Note, should not stack-allocate initial data -- no guarantee, in
|
|
Me@50
|
442 // general that creating processor will outlive ones it creates.
|
|
Me@50
|
443 free( procrToDissipate->startOfStack );
|
|
Me@50
|
444 free( procrToDissipate );
|
|
Me@50
|
445 }
|
|
Me@50
|
446
|
|
Me@22
|
447
|
|
Me@22
|
448
|
|
Me@53
|
449 /*This call's name indicates that request is malloc'd -- so req handler
|
|
Me@53
|
450 * has to free any extra requests tacked on before a send, using this.
|
|
Me@53
|
451 *
|
|
Me@53
|
452 * This inserts the semantic-layer's request data into standard VMS carrier
|
|
Me@53
|
453 * request data-struct that is mallocd. The sem request doesn't need to
|
|
Me@53
|
454 * be malloc'd if this is called inside the same call chain before the
|
|
Me@53
|
455 * send of the last request is called.
|
|
Me@53
|
456 *
|
|
Me@53
|
457 *The request handler has to call VMS__free_VMSReq for any of these
|
|
Me@22
|
458 */
|
|
Me@22
|
459 inline void
|
|
Me@53
|
460 VMS__add_sem_request_in_mallocd_VMSReqst( void *semReqData,
|
|
Me@53
|
461 VirtProcr *callingPr )
|
|
Me@53
|
462 { VMSReqst *req;
|
|
Me@22
|
463
|
|
Me@53
|
464 req = VMS__malloc( sizeof(VMSReqst) );
|
|
Me@53
|
465 req->reqType = semantic;
|
|
Me@53
|
466 req->semReqData = semReqData;
|
|
Me@53
|
467 req->nextReqst = callingPr->requests;
|
|
Me@53
|
468 callingPr->requests = req;
|
|
Me@22
|
469 }
|
|
Me@22
|
470
|
|
Me@50
|
471 /*This inserts the semantic-layer's request data into standard VMS carrier
|
|
Me@50
|
472 * request data-struct is allocated on stack of this call & ptr to it sent
|
|
Me@50
|
473 * to plugin
|
|
Me@50
|
474 *Then it does suspend, to cause request to be sent.
|
|
Me@50
|
475 */
|
|
Me@50
|
476 inline void
|
|
Me@50
|
477 VMS__send_sem_request( void *semReqData, VirtProcr *callingPr )
|
|
Me@50
|
478 { VMSReqst req;
|
|
Me@22
|
479
|
|
Me@50
|
480 req.reqType = semantic;
|
|
Me@50
|
481 req.semReqData = semReqData;
|
|
Me@50
|
482 req.nextReqst = callingPr->requests;
|
|
Me@50
|
483 callingPr->requests = &req;
|
|
Me@50
|
484
|
|
Me@50
|
485 VMS__suspend_procr( callingPr );
|
|
Me@50
|
486 }
|
|
Me@50
|
487
|
|
Me@50
|
488
|
|
Me@50
|
489 inline void
|
|
Me@50
|
490 VMS__send_VMSSem_request( void *semReqData, VirtProcr *callingPr )
|
|
Me@50
|
491 { VMSReqst req;
|
|
Me@50
|
492
|
|
Me@50
|
493 req.reqType = VMSSemantic;
|
|
Me@50
|
494 req.semReqData = semReqData;
|
|
Me@50
|
495 req.nextReqst = callingPr->requests; //gab any other preceeding
|
|
Me@50
|
496 callingPr->requests = &req;
|
|
Me@50
|
497
|
|
Me@50
|
498 VMS__suspend_procr( callingPr );
|
|
Me@50
|
499 }
|
|
Me@50
|
500
|
|
Me@50
|
501
|
|
Me@50
|
502 /*
|
|
Me@38
|
503 */
|
|
Me@24
|
504 VMSReqst *
|
|
Me@50
|
505 VMS__take_next_request_out_of( VirtProcr *procrWithReq )
|
|
Me@31
|
506 { VMSReqst *req;
|
|
Me@31
|
507
|
|
Me@31
|
508 req = procrWithReq->requests;
|
|
Me@38
|
509 if( req == NULL ) return NULL;
|
|
Me@31
|
510
|
|
Me@31
|
511 procrWithReq->requests = procrWithReq->requests->nextReqst;
|
|
Me@50
|
512 return req;
|
|
Me@24
|
513 }
|
|
Me@22
|
514
|
|
Me@24
|
515
|
|
Me@24
|
516 inline void *
|
|
Me@24
|
517 VMS__take_sem_reqst_from( VMSReqst *req )
|
|
Me@24
|
518 {
|
|
Me@24
|
519 return req->semReqData;
|
|
Me@24
|
520 }
|
|
Me@24
|
521
|
|
Me@24
|
522
|
|
Me@24
|
523
|
|
Me@50
|
524 /* This is for OS requests and VMS infrastructure requests, such as to create
|
|
Me@50
|
525 * a probe -- a probe is inside the heart of VMS-core, it's not part of any
|
|
Me@50
|
526 * language -- but it's also a semantic thing that's triggered from and used
|
|
Me@50
|
527 * in the application.. so it crosses abstractions.. so, need some special
|
|
Me@50
|
528 * pattern here for handling such requests.
|
|
Me@52
|
529 * Doing this just like it were a second language sharing VMS-core.
|
|
Me@52
|
530 *
|
|
Me@50
|
531 * This is called from the language's request handler when it sees a request
|
|
Me@50
|
532 * of type VMSSemReq
|
|
Me@52
|
533 *
|
|
Me@52
|
534 * TODO: Later change this, to give probes their own separate plugin & have
|
|
Me@52
|
535 * VMS-core steer the request to appropriate plugin
|
|
Me@52
|
536 * Do the same for OS calls -- look later at it..
|
|
Me@50
|
537 */
|
|
Me@50
|
538 void inline
|
|
Me@50
|
539 VMS__handle_VMSSemReq( VMSReqst *req, VirtProcr *requestingPr, void *semEnv,
|
|
Me@50
|
540 ResumePrFnPtr resumePrFnPtr )
|
|
Me@50
|
541 { VMSSemReq *semReq;
|
|
Me@50
|
542 IntervalProbe *newProbe;
|
|
Me@24
|
543
|
|
Me@50
|
544 semReq = req->semReqData;
|
|
Me@24
|
545
|
|
Me@50
|
546 newProbe = VMS__malloc( sizeof(IntervalProbe) );
|
|
Me@65
|
547 newProbe->nameStr = VMS__strDup( semReq->nameStr );
|
|
Me@50
|
548 newProbe->hist = NULL;
|
|
Me@50
|
549 newProbe->schedChoiceWasRecorded = FALSE;
|
|
Me@53
|
550
|
|
Me@53
|
551 //This runs in masterVP, so no race-condition worries
|
|
Me@50
|
552 newProbe->probeID =
|
|
Me@50
|
553 addToDynArray( newProbe, _VMSMasterEnv->dynIntervalProbesInfo );
|
|
Me@50
|
554
|
|
Me@53
|
555 requestingPr->dataRetFromReq = newProbe;
|
|
Me@50
|
556
|
|
Me@50
|
557 (*resumePrFnPtr)( requestingPr, semEnv );
|
|
Me@22
|
558 }
|
|
Me@22
|
559
|
|
Me@22
|
560
|
|
Me@22
|
561
|
|
Me@24
|
562 /*This must be called by the request handler plugin -- it cannot be called
|
|
Me@24
|
563 * from the semantic library "dissipate processor" function -- instead, the
|
|
Me@50
|
564 * semantic layer has to generate a request, and the plug-in calls this
|
|
Me@24
|
565 * function.
|
|
Me@24
|
566 *The reason is that this frees the virtual processor's stack -- which is
|
|
Me@24
|
567 * still in use inside semantic library calls!
|
|
Me@24
|
568 *
|
|
Me@24
|
569 *This frees or recycles all the state owned by and comprising the VMS
|
|
Me@24
|
570 * portion of the animating virtual procr. The request handler must first
|
|
Me@24
|
571 * free any semantic data created for the processor that didn't use the
|
|
Me@24
|
572 * VMS_malloc mechanism. Then it calls this, which first asks the malloc
|
|
Me@24
|
573 * system to disown any state that did use VMS_malloc, and then frees the
|
|
Me@24
|
574 * statck and the processor-struct itself.
|
|
Me@24
|
575 *If the dissipated processor is the sole (remaining) owner of VMS__malloc'd
|
|
Me@24
|
576 * state, then that state gets freed (or sent to recycling) as a side-effect
|
|
Me@24
|
577 * of dis-owning it.
|
|
Me@24
|
578 */
|
|
Me@24
|
579 void
|
|
Me@53
|
580 VMS__dissipate_procr( VirtProcr *animatingPr )
|
|
Me@24
|
581 {
|
|
Me@24
|
582 //dis-own all locations owned by this processor, causing to be freed
|
|
Me@24
|
583 // any locations that it is (was) sole owner of
|
|
Me@29
|
584 //TODO: implement VMS__malloc system, including "give up ownership"
|
|
Me@24
|
585
|
|
Me@24
|
586
|
|
Me@24
|
587 //NOTE: initialData was given to the processor, so should either have
|
|
Me@24
|
588 // been alloc'd with VMS__malloc, or freed by the level above animPr.
|
|
Me@24
|
589 //So, all that's left to free here is the stack and the VirtProcr struc
|
|
Me@24
|
590 // itself
|
|
Me@50
|
591 //Note, should not stack-allocate initial data -- no guarantee, in
|
|
Me@50
|
592 // general that creating processor will outlive ones it creates.
|
|
Me@50
|
593 VMS__free( animatingPr->startOfStack );
|
|
Me@50
|
594 VMS__free( animatingPr );
|
|
Me@24
|
595 }
|
|
Me@24
|
596
|
|
Me@24
|
597
|
|
Me@53
|
598 //TODO: look at architecting cleanest separation between request handler
|
|
Me@29
|
599 // and master loop, for dissipate, create, shutdown, and other non-semantic
|
|
Me@29
|
600 // requests. Issue is chain: one removes requests from AppVP, one dispatches
|
|
Me@29
|
601 // on type of request, and one handles each type.. but some types require
|
|
Me@29
|
602 // action from both request handler and master loop -- maybe just give the
|
|
Me@29
|
603 // request handler calls like: VMS__handle_X_request_type
|
|
Me@24
|
604
|
|
Me@29
|
605
|
|
Me@29
|
606 /*This is called by the semantic layer's request handler when it decides its
|
|
Me@29
|
607 * time to shut down the VMS system. Calling this causes the core loop OS
|
|
Me@29
|
608 * threads to exit, which unblocks the entry-point function that started up
|
|
Me@29
|
609 * VMS, and allows it to grab the result and return to the original single-
|
|
Me@29
|
610 * threaded application.
|
|
Me@22
|
611 *
|
|
Me@29
|
612 *The _VMSMasterEnv is needed by this shut down function, so the create-seed-
|
|
Me@29
|
613 * and-wait function has to free a bunch of stuff after it detects the
|
|
Me@29
|
614 * threads have all died: the masterEnv, the thread-related locations,
|
|
Me@29
|
615 * masterVP any AppVPs that might still be allocated and sitting in the
|
|
Me@29
|
616 * semantic environment, or have been orphaned in the _VMSWorkQ.
|
|
Me@29
|
617 *
|
|
Me@53
|
618 *NOTE: the semantic plug-in is expected to use VMS__malloc to get all the
|
|
Me@29
|
619 * locations it needs, and give ownership to masterVP. Then, they will be
|
|
Me@53
|
620 * automatically freed.
|
|
Me@22
|
621 *
|
|
Me@29
|
622 *In here,create one core-loop shut-down processor for each core loop and put
|
|
Me@31
|
623 * them all directly into the readyToAnimateQ.
|
|
Me@29
|
624 *Note, this function can ONLY be called after the semantic environment no
|
|
Me@29
|
625 * longer cares if AppVPs get animated after the point this is called. In
|
|
Me@29
|
626 * other words, this can be used as an abort, or else it should only be
|
|
Me@29
|
627 * called when all AppVPs have finished dissipate requests -- only at that
|
|
Me@29
|
628 * point is it sure that all results have completed.
|
|
Me@22
|
629 */
|
|
Me@22
|
630 void
|
|
Me@53
|
631 VMS__shutdown()
|
|
Me@8
|
632 { int coreIdx;
|
|
Me@14
|
633 VirtProcr *shutDownPr;
|
|
Me@22
|
634
|
|
Me@29
|
635 //create the shutdown processors, one for each core loop -- put them
|
|
Me@31
|
636 // directly into the Q -- each core will die when gets one
|
|
Me@8
|
637 for( coreIdx=0; coreIdx < NUM_CORES; coreIdx++ )
|
|
Me@50
|
638 { //Note, this is running in the master
|
|
Me@29
|
639 shutDownPr = VMS__create_procr( &endOSThreadFn, NULL );
|
|
Me@55
|
640 writeVMSQ( shutDownPr, _VMSMasterEnv->readyToAnimateQs[coreIdx] );
|
|
Me@8
|
641 }
|
|
Me@22
|
642
|
|
Me@12
|
643 }
|
|
Me@12
|
644
|
|
Me@12
|
645
|
|
Me@29
|
646 /*Am trying to be cute, avoiding IF statement in coreLoop that checks for
|
|
Me@29
|
647 * a special shutdown procr. Ended up with extra-complex shutdown sequence.
|
|
Me@29
|
648 *This function has the sole purpose of setting the stack and framePtr
|
|
Me@29
|
649 * to the coreLoop's stack and framePtr.. it does that then jumps to the
|
|
Me@29
|
650 * core loop's shutdown point -- might be able to just call Pthread_exit
|
|
Me@30
|
651 * from here, but am going back to the pthread's stack and setting everything
|
|
Me@29
|
652 * up just as if it never jumped out, before calling pthread_exit.
|
|
Me@29
|
653 *The end-point of core loop will free the stack and so forth of the
|
|
Me@29
|
654 * processor that animates this function, (this fn is transfering the
|
|
Me@29
|
655 * animator of the AppVP that is in turn animating this function over
|
|
Me@29
|
656 * to core loop function -- note that this slices out a level of virtual
|
|
Me@29
|
657 * processors).
|
|
Me@29
|
658 */
|
|
Me@29
|
659 void
|
|
Me@29
|
660 endOSThreadFn( void *initData, VirtProcr *animatingPr )
|
|
msach@71
|
661 {
|
|
msach@75
|
662 #ifdef SEQUENTIAL
|
|
msach@75
|
663 asmTerminateCoreLoopSeq(animatingPr);
|
|
msach@75
|
664 #else
|
|
msach@71
|
665 asmTerminateCoreLoop(animatingPr);
|
|
msach@75
|
666 #endif
|
|
Me@29
|
667 }
|
|
Me@29
|
668
|
|
Me@29
|
669
|
|
Me@53
|
670 /*This is called from the startup & shutdown
|
|
Me@24
|
671 */
|
|
Me@24
|
672 void
|
|
Me@53
|
673 VMS__cleanup_at_end_of_shutdown()
|
|
Me@31
|
674 {
|
|
msach@78
|
675 //unused
|
|
msach@78
|
676 //VMSQueueStruc **readyToAnimateQs;
|
|
msach@78
|
677 //int coreIdx;
|
|
msach@78
|
678 //VirtProcr **masterVPs;
|
|
msach@78
|
679 //SchedSlot ***allSchedSlots; //ptr to array of ptrs
|
|
Me@31
|
680
|
|
Me@65
|
681 //Before getting rid of everything, print out any measurements made
|
|
msach@102
|
682 //forAllInDynArrayDo( _VMSMasterEnv->measHistsInfo, (DynArrayFnPtr)&printHist );
|
|
msach@102
|
683 //forAllInDynArrayDo( _VMSMasterEnv->measHistsInfo, (DynArrayFnPtr)&saveHistToFile);
|
|
Me@68
|
684 //forAllInDynArrayDo( _VMSMasterEnv->measHistsInfo, &freeHistExt );
|
|
msach@169
|
685 /*
|
|
Me@65
|
686 #ifdef MEAS__TIME_PLUGIN
|
|
Me@68
|
687 printHist( _VMSMasterEnv->reqHdlrLowTimeHist );
|
|
msach@84
|
688 saveHistToFile( _VMSMasterEnv->reqHdlrLowTimeHist );
|
|
Me@68
|
689 printHist( _VMSMasterEnv->reqHdlrHighTimeHist );
|
|
msach@79
|
690 saveHistToFile( _VMSMasterEnv->reqHdlrHighTimeHist );
|
|
Me@68
|
691 freeHistExt( _VMSMasterEnv->reqHdlrLowTimeHist );
|
|
Me@68
|
692 freeHistExt( _VMSMasterEnv->reqHdlrHighTimeHist );
|
|
Me@65
|
693 #endif
|
|
Me@65
|
694 #ifdef MEAS__TIME_MALLOC
|
|
Me@65
|
695 printHist( _VMSMasterEnv->mallocTimeHist );
|
|
msach@79
|
696 saveHistToFile( _VMSMasterEnv->mallocTimeHist );
|
|
Me@65
|
697 printHist( _VMSMasterEnv->freeTimeHist );
|
|
msach@79
|
698 saveHistToFile( _VMSMasterEnv->freeTimeHist );
|
|
Me@65
|
699 freeHistExt( _VMSMasterEnv->mallocTimeHist );
|
|
Me@65
|
700 freeHistExt( _VMSMasterEnv->freeTimeHist );
|
|
Me@65
|
701 #endif
|
|
Me@65
|
702 #ifdef MEAS__TIME_MASTER_LOCK
|
|
Me@65
|
703 printHist( _VMSMasterEnv->masterLockLowTimeHist );
|
|
Me@65
|
704 printHist( _VMSMasterEnv->masterLockHighTimeHist );
|
|
Me@65
|
705 #endif
|
|
Me@65
|
706 #ifdef MEAS__TIME_MASTER
|
|
Me@65
|
707 printHist( _VMSMasterEnv->pluginTimeHist );
|
|
Me@65
|
708 for( coreIdx = 0; coreIdx < NUM_CORES; coreIdx++ )
|
|
Me@65
|
709 {
|
|
Me@65
|
710 freeVMSQ( readyToAnimateQs[ coreIdx ] );
|
|
Me@65
|
711 //master VPs were created external to VMS, so use external free
|
|
Me@65
|
712 VMS__dissipate_procr( masterVPs[ coreIdx ] );
|
|
Me@65
|
713
|
|
Me@65
|
714 freeSchedSlots( allSchedSlots[ coreIdx ] );
|
|
Me@65
|
715 }
|
|
Me@65
|
716 #endif
|
|
msach@169
|
717 */
|
|
Me@65
|
718 #ifdef MEAS__TIME_STAMP_SUSP
|
|
Me@65
|
719 printHist( _VMSMasterEnv->pluginTimeHist );
|
|
Me@65
|
720 for( coreIdx = 0; coreIdx < NUM_CORES; coreIdx++ )
|
|
Me@65
|
721 {
|
|
Me@65
|
722 freeVMSQ( readyToAnimateQs[ coreIdx ] );
|
|
Me@65
|
723 //master VPs were created external to VMS, so use external free
|
|
Me@65
|
724 VMS__dissipate_procr( masterVPs[ coreIdx ] );
|
|
Me@65
|
725
|
|
Me@65
|
726 freeSchedSlots( allSchedSlots[ coreIdx ] );
|
|
Me@65
|
727 }
|
|
Me@65
|
728 #endif
|
|
Me@65
|
729
|
|
Me@53
|
730 //All the environment data has been allocated with VMS__malloc, so just
|
|
Me@53
|
731 // free its internal big-chunk and all inside it disappear.
|
|
Me@53
|
732 /*
|
|
Me@31
|
733 readyToAnimateQs = _VMSMasterEnv->readyToAnimateQs;
|
|
Me@31
|
734 masterVPs = _VMSMasterEnv->masterVPs;
|
|
Me@31
|
735 allSchedSlots = _VMSMasterEnv->allSchedSlots;
|
|
Me@31
|
736
|
|
Me@31
|
737 for( coreIdx = 0; coreIdx < NUM_CORES; coreIdx++ )
|
|
Me@24
|
738 {
|
|
Me@55
|
739 freeVMSQ( readyToAnimateQs[ coreIdx ] );
|
|
Me@50
|
740 //master VPs were created external to VMS, so use external free
|
|
Me@53
|
741 VMS__dissipate_procr( masterVPs[ coreIdx ] );
|
|
Me@31
|
742
|
|
Me@31
|
743 freeSchedSlots( allSchedSlots[ coreIdx ] );
|
|
Me@24
|
744 }
|
|
Me@31
|
745
|
|
Me@53
|
746 VMS__free( _VMSMasterEnv->readyToAnimateQs );
|
|
Me@53
|
747 VMS__free( _VMSMasterEnv->masterVPs );
|
|
Me@53
|
748 VMS__free( _VMSMasterEnv->allSchedSlots );
|
|
Me@50
|
749
|
|
Me@50
|
750 //============================= MEASUREMENT STUFF ========================
|
|
Me@50
|
751 #ifdef STATS__TURN_ON_PROBES
|
|
Me@53
|
752 freeDynArrayDeep( _VMSMasterEnv->dynIntervalProbesInfo, &VMS__free_probe);
|
|
Me@50
|
753 #endif
|
|
Me@50
|
754 //========================================================================
|
|
Me@53
|
755 */
|
|
Me@53
|
756 //These are the only two that use system free
|
|
msach@101
|
757 VMS_ext__free_free_list( _VMSMasterEnv->freeLists );
|
|
Me@53
|
758 free( (void *)_VMSMasterEnv );
|
|
Me@24
|
759 }
|
|
Me@24
|
760
|
|
Me@54
|
761
|
|
Me@54
|
762 //================================
|
|
Me@54
|
763
|
|
Me@54
|
764
|
|
Me@54
|
765 /*Later, improve this -- for now, just exits the application after printing
|
|
Me@54
|
766 * the error message.
|
|
Me@54
|
767 */
|
|
Me@54
|
768 void
|
|
Me@54
|
769 VMS__throw_exception( char *msgStr, VirtProcr *reqstPr, VMSExcp *excpData )
|
|
Me@54
|
770 {
|
|
msach@69
|
771 printf("%s",msgStr);
|
|
Me@54
|
772 fflush(stdin);
|
|
Me@54
|
773 exit(1);
|
|
Me@54
|
774 }
|
|
Me@54
|
775
|
|
msach@169
|
776 //======================= Measurement =======================
|
|
msach@169
|
777 #ifdef MEAS__TIME_2011_SYS
|
|
msach@169
|
778 uint64
|
|
msach@169
|
779 VMS__give_num_plugin_cycles()
|
|
msach@169
|
780 { return _VMSMasterEnv->totalPluginCycles;
|
|
msach@169
|
781 }
|
|
msach@169
|
782
|
|
msach@169
|
783 uint32
|
|
msach@169
|
784 VMS__give_num_plugin_animations()
|
|
msach@169
|
785 { return _VMSMasterEnv->numPluginAnimations;
|
|
msach@169
|
786 }
|
|
msach@169
|
787 #endif
|
