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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 "C_Libraries/Queue_impl/BlockingQueue.h"
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17 #include "C_Libraries/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 posix_memalign((void*)&_VMSMasterEnv, CACHELINE_SIZE, 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_int__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_int__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_int__malloc( NUM_CORES * sizeof(VMSQueueStruc *) );
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132 masterVPs = VMS_int__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_int__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; //moved to coreLoops stack, reason: avoid false sharing
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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->masterLockUnion.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_int__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_int__malloc( NUM_SCHED_SLOTS * sizeof(SchedSlot *) );
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191 posix_memalign(&schedSlots, CACHELINE_SIZE, NUM_SCHED_SLOTS * sizeof(SchedSlot *));
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192
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193 for( i = 0; i < NUM_SCHED_SLOTS; i++ )
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194 {
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195 //schedSlots[i] = VMS_int__malloc( sizeof(SchedSlot) );
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196 posix_memalign(&schedSlots[i], CACHELINE_SIZE, CACHELINE_SIZE );
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197
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198 //Set state to mean "handling requests done, slot needs filling"
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199 schedSlots[i]->workIsDone = FALSE;
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200 schedSlots[i]->needsProcrAssigned = TRUE;
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201 }
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202 return schedSlots;
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203 }
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204
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205
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206 void
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207 freeSchedSlots( SchedSlot **schedSlots )
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208 { int i;
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209 for( i = 0; i < NUM_SCHED_SLOTS; i++ )
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210 {
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211 VMS_int__free( schedSlots[i] );
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212 }
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213 VMS_int__free( schedSlots );
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214 }
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215
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216
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217 void
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218 create_the_coreLoop_OS_threads()
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219 {
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220 //========================================================================
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221 // Create the Threads
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222 int coreIdx, retCode;
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223
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224 //Need the threads to be created suspended, and wait for a signal
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225 // before proceeding -- gives time after creating to initialize other
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226 // stuff before the coreLoops set off.
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227 _VMSMasterEnv->setupComplete = 0;
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228
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229 //Make the threads that animate the core loops
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230 for( coreIdx=0; coreIdx < NUM_CORES; coreIdx++ )
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231 { coreLoopThdParams[coreIdx] = VMS_int__malloc( sizeof(ThdParams) );
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232 coreLoopThdParams[coreIdx]->coreNum = coreIdx;
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233
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234 retCode =
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235 pthread_create( &(coreLoopThdHandles[coreIdx]),
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236 thdAttrs,
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237 &coreLoop,
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238 (void *)(coreLoopThdParams[coreIdx]) );
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239 if(retCode){printf("ERROR creating thread: %d\n", retCode); exit(1);}
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240 }
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241 }
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242
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243 /*Semantic layer calls this when it want the system to start running..
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244 *
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245 *This starts the core loops running then waits for them to exit.
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246 */
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247 void
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248 VMS__start_the_work_then_wait_until_done()
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249 { int coreIdx;
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250 //Start the core loops running
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251
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252 //tell the core loop threads that setup is complete
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253 //get lock, to lock out any threads still starting up -- they'll see
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254 // that setupComplete is true before entering while loop, and so never
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255 // wait on the condition
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256 pthread_mutex_lock( &suspendLock );
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257 _VMSMasterEnv->setupComplete = 1;
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258 pthread_mutex_unlock( &suspendLock );
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259 pthread_cond_broadcast( &suspend_cond );
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260
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261
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262 //wait for all to complete
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263 for( coreIdx=0; coreIdx < NUM_CORES; coreIdx++ )
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264 {
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265 pthread_join( coreLoopThdHandles[coreIdx], NULL );
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266 }
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267
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268 //NOTE: do not clean up VMS env here -- semantic layer has to have
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269 // a chance to clean up its environment first, then do a call to free
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270 // the Master env and rest of VMS locations
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271 }
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272
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273 #ifdef SEQUENTIAL
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274 /*Only difference between version with an OS thread pinned to each core and
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275 * the sequential version of VMS is VMS__init_Seq, this, and coreLoop_Seq.
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276 */
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277 void
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278 VMS__start_the_work_then_wait_until_done_Seq()
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279 {
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280 //Instead of un-suspending threads, just call the one and only
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281 // core loop (sequential version), in the main thread.
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282 coreLoop_Seq( NULL );
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283 flushRegisters();
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284
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285 }
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286 #endif
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287
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288 inline VirtProcr *
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289 VMS__create_procr( VirtProcrFnPtr fnPtr, void *initialData )
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290 { VirtProcr *newPr;
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291 void *stackLocs;
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292
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293 posix_memalign((void*)&newPr, CACHELINE_SIZE, sizeof(VirtProcr) ); //align to cacheline
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294 posix_memalign(&stackLocs, CACHELINE_SIZE, VIRT_PROCR_STACK_SIZE ); //align to cacheline
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295 if( stackLocs == 0 )
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296 { perror("VMS_int__malloc stack"); exit(1); }
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297
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298 return create_procr_helper( newPr, fnPtr, initialData, stackLocs );
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299 }
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300
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301 /* "ext" designates that it's for use outside the VMS system -- should only
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302 * be called from main thread or other thread -- never from code animated by
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303 * a VMS virtual processor.
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304 */
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305 inline VirtProcr *
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306 VMS_ext__create_procr( VirtProcrFnPtr fnPtr, void *initialData )
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307 { VirtProcr *newPr;
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308 char *stackLocs;
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309
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310 newPr = malloc( sizeof(VirtProcr) );
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311 stackLocs = malloc( VIRT_PROCR_STACK_SIZE );
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312 if( stackLocs == 0 )
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313 { perror("malloc stack"); exit(1); }
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314
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315 return create_procr_helper( newPr, fnPtr, initialData, stackLocs );
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316 }
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317
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|
Me@8
|
318
|
|
Me@64
|
319 /*Anticipating multi-tasking
|
|
Me@64
|
320 */
|
|
Me@64
|
321 void *
|
|
Me@64
|
322 VMS__give_sem_env_for( VirtProcr *animPr )
|
|
Me@64
|
323 {
|
|
Me@64
|
324 return _VMSMasterEnv->semanticEnv;
|
|
Me@64
|
325 }
|
|
Me@64
|
326 //===========================================================================
|
|
Me@26
|
327 /*there is a label inside this function -- save the addr of this label in
|
|
Me@0
|
328 * the callingPr struc, as the pick-up point from which to start the next
|
|
Me@0
|
329 * work-unit for that procr. If turns out have to save registers, then
|
|
Me@0
|
330 * save them in the procr struc too. Then do assembly jump to the CoreLoop's
|
|
Me@0
|
331 * "done with work-unit" label. The procr struc is in the request in the
|
|
Me@0
|
332 * slave that animated the just-ended work-unit, so all the state is saved
|
|
Me@0
|
333 * there, and will get passed along, inside the request handler, to the
|
|
Me@0
|
334 * next work-unit for that procr.
|
|
Me@0
|
335 */
|
|
Me@8
|
336 void
|
|
Me@38
|
337 VMS__suspend_procr( VirtProcr *animatingPr )
|
|
Me@55
|
338 {
|
|
Me@0
|
339
|
|
Me@14
|
340 //The request to master will cause this suspended virt procr to get
|
|
Me@14
|
341 // scheduled again at some future point -- to resume, core loop jumps
|
|
Me@14
|
342 // to the resume point (below), which causes restore of saved regs and
|
|
Me@14
|
343 // "return" from this call.
|
|
msach@71
|
344 //animatingPr->nextInstrPt = &&ResumePt;
|
|
Me@1
|
345
|
|
Me@1
|
346 //return ownership of the virt procr and sched slot to Master virt pr
|
|
Me@38
|
347 animatingPr->schedSlot->workIsDone = TRUE;
|
|
Me@1
|
348
|
|
Me@41
|
349 //=========================== Measurement stuff ========================
|
|
Me@38
|
350 #ifdef MEAS__TIME_STAMP_SUSP
|
|
Me@41
|
351 //record time stamp: compare to time-stamp recorded below
|
|
Me@38
|
352 saveLowTimeStampCountInto( animatingPr->preSuspTSCLow );
|
|
Me@38
|
353 #endif
|
|
Me@41
|
354 //=======================================================================
|
|
Me@38
|
355
|
|
msach@71
|
356 switchToCoreLoop(animatingPr);
|
|
msach@71
|
357 flushRegisters();
|
|
Me@55
|
358
|
|
Me@55
|
359 //=======================================================================
|
|
msach@71
|
360
|
|
Me@38
|
361 #ifdef MEAS__TIME_STAMP_SUSP
|
|
Me@41
|
362 //NOTE: only take low part of count -- do sanity check when take diff
|
|
Me@38
|
363 saveLowTimeStampCountInto( animatingPr->postSuspTSCLow );
|
|
Me@38
|
364 #endif
|
|
Me@38
|
365
|
|
Me@0
|
366 return;
|
|
Me@0
|
367 }
|
|
Me@0
|
368
|
|
Me@22
|
369
|
|
Me@22
|
370
|
|
Me@50
|
371 /*For this implementation of VMS, it may not make much sense to have the
|
|
Me@50
|
372 * system of requests for creating a new processor done this way.. but over
|
|
Me@50
|
373 * the scope of single-master, multi-master, mult-tasking, OS-implementing,
|
|
Me@50
|
374 * distributed-memory, and so on, this gives VMS implementation a chance to
|
|
Me@50
|
375 * do stuff before suspend, in the AppVP, and in the Master before the plugin
|
|
Me@50
|
376 * is called, as well as in the lang-lib before this is called, and in the
|
|
Me@50
|
377 * plugin. So, this gives both VMS and language implementations a chance to
|
|
Me@50
|
378 * intercept at various points and do order-dependent stuff.
|
|
Me@50
|
379 *Having a standard VMSNewPrReqData struc allows the language to create and
|
|
Me@50
|
380 * free the struc, while VMS knows how to get the newPr if it wants it, and
|
|
Me@50
|
381 * it lets the lang have lang-specific data related to creation transported
|
|
Me@50
|
382 * to the plugin.
|
|
Me@50
|
383 */
|
|
Me@50
|
384 void
|
|
Me@50
|
385 VMS__send_create_procr_req( void *semReqData, VirtProcr *reqstingPr )
|
|
Me@50
|
386 { VMSReqst req;
|
|
Me@50
|
387
|
|
Me@50
|
388 req.reqType = createReq;
|
|
Me@50
|
389 req.semReqData = semReqData;
|
|
Me@50
|
390 req.nextReqst = reqstingPr->requests;
|
|
Me@50
|
391 reqstingPr->requests = &req;
|
|
Me@50
|
392
|
|
Me@50
|
393 VMS__suspend_procr( reqstingPr );
|
|
Me@50
|
394 }
|
|
Me@50
|
395
|
|
Me@22
|
396
|
|
Me@38
|
397 /*
|
|
Me@22
|
398 *This adds a request to dissipate, then suspends the processor so that the
|
|
Me@22
|
399 * request handler will receive the request. The request handler is what
|
|
Me@22
|
400 * does the work of freeing memory and removing the processor from the
|
|
Me@22
|
401 * semantic environment's data structures.
|
|
Me@22
|
402 *The request handler also is what figures out when to shutdown the VMS
|
|
Me@22
|
403 * system -- which causes all the core loop threads to die, and returns from
|
|
Me@22
|
404 * the call that started up VMS to perform the work.
|
|
Me@22
|
405 *
|
|
Me@22
|
406 *This form is a bit misleading to understand if one is trying to figure out
|
|
Me@22
|
407 * how VMS works -- it looks like a normal function call, but inside it
|
|
Me@22
|
408 * sends a request to the request handler and suspends the processor, which
|
|
Me@22
|
409 * jumps out of the VMS__dissipate_procr function, and out of all nestings
|
|
Me@22
|
410 * above it, transferring the work of dissipating to the request handler,
|
|
Me@22
|
411 * which then does the actual work -- causing the processor that animated
|
|
Me@22
|
412 * the call of this function to disappear and the "hanging" state of this
|
|
Me@22
|
413 * function to just poof into thin air -- the virtual processor's trace
|
|
Me@22
|
414 * never returns from this call, but instead the virtual processor's trace
|
|
Me@22
|
415 * gets suspended in this call and all the virt processor's state disap-
|
|
Me@22
|
416 * pears -- making that suspend the last thing in the virt procr's trace.
|
|
Me@8
|
417 */
|
|
Me@8
|
418 void
|
|
Me@53
|
419 VMS__send_dissipate_req( VirtProcr *procrToDissipate )
|
|
Me@50
|
420 { VMSReqst req;
|
|
Me@22
|
421
|
|
Me@50
|
422 req.reqType = dissipate;
|
|
Me@50
|
423 req.nextReqst = procrToDissipate->requests;
|
|
Me@50
|
424 procrToDissipate->requests = &req;
|
|
Me@50
|
425
|
|
Me@22
|
426 VMS__suspend_procr( procrToDissipate );
|
|
Me@50
|
427 }
|
|
Me@50
|
428
|
|
Me@50
|
429
|
|
Me@50
|
430 /* "ext" designates that it's for use outside the VMS system -- should only
|
|
Me@50
|
431 * be called from main thread or other thread -- never from code animated by
|
|
Me@50
|
432 * a VMS virtual processor.
|
|
Me@50
|
433 *
|
|
Me@50
|
434 *Use this version to dissipate VPs created outside the VMS system.
|
|
Me@50
|
435 */
|
|
Me@50
|
436 void
|
|
Me@50
|
437 VMS_ext__dissipate_procr( VirtProcr *procrToDissipate )
|
|
Me@50
|
438 {
|
|
Me@50
|
439 //NOTE: initialData was given to the processor, so should either have
|
|
msach@201
|
440 // been alloc'd with VMS_int__malloc, or freed by the level above animPr.
|
|
Me@50
|
441 //So, all that's left to free here is the stack and the VirtProcr struc
|
|
Me@50
|
442 // itself
|
|
Me@50
|
443 //Note, should not stack-allocate initial data -- no guarantee, in
|
|
Me@50
|
444 // general that creating processor will outlive ones it creates.
|
|
Me@50
|
445 free( procrToDissipate->startOfStack );
|
|
Me@50
|
446 free( procrToDissipate );
|
|
Me@50
|
447 }
|
|
Me@50
|
448
|
|
Me@22
|
449
|
|
Me@22
|
450
|
|
Me@53
|
451 /*This call's name indicates that request is malloc'd -- so req handler
|
|
Me@53
|
452 * has to free any extra requests tacked on before a send, using this.
|
|
Me@53
|
453 *
|
|
Me@53
|
454 * This inserts the semantic-layer's request data into standard VMS carrier
|
|
Me@53
|
455 * request data-struct that is mallocd. The sem request doesn't need to
|
|
Me@53
|
456 * be malloc'd if this is called inside the same call chain before the
|
|
Me@53
|
457 * send of the last request is called.
|
|
Me@53
|
458 *
|
|
msach@201
|
459 *The request handler has to call VMS_int__free_VMSReq for any of these
|
|
Me@22
|
460 */
|
|
Me@22
|
461 inline void
|
|
Me@53
|
462 VMS__add_sem_request_in_mallocd_VMSReqst( void *semReqData,
|
|
Me@53
|
463 VirtProcr *callingPr )
|
|
Me@53
|
464 { VMSReqst *req;
|
|
Me@22
|
465
|
|
msach@201
|
466 req = VMS_int__malloc( sizeof(VMSReqst) );
|
|
Me@53
|
467 req->reqType = semantic;
|
|
Me@53
|
468 req->semReqData = semReqData;
|
|
Me@53
|
469 req->nextReqst = callingPr->requests;
|
|
Me@53
|
470 callingPr->requests = req;
|
|
Me@22
|
471 }
|
|
Me@22
|
472
|
|
Me@50
|
473 /*This inserts the semantic-layer's request data into standard VMS carrier
|
|
Me@50
|
474 * request data-struct is allocated on stack of this call & ptr to it sent
|
|
Me@50
|
475 * to plugin
|
|
Me@50
|
476 *Then it does suspend, to cause request to be sent.
|
|
Me@50
|
477 */
|
|
Me@50
|
478 inline void
|
|
Me@50
|
479 VMS__send_sem_request( void *semReqData, VirtProcr *callingPr )
|
|
Me@50
|
480 { VMSReqst req;
|
|
Me@22
|
481
|
|
Me@50
|
482 req.reqType = semantic;
|
|
Me@50
|
483 req.semReqData = semReqData;
|
|
Me@50
|
484 req.nextReqst = callingPr->requests;
|
|
Me@50
|
485 callingPr->requests = &req;
|
|
Me@50
|
486
|
|
Me@50
|
487 VMS__suspend_procr( callingPr );
|
|
Me@50
|
488 }
|
|
Me@50
|
489
|
|
Me@50
|
490
|
|
Me@50
|
491 inline void
|
|
Me@50
|
492 VMS__send_VMSSem_request( void *semReqData, VirtProcr *callingPr )
|
|
Me@50
|
493 { VMSReqst req;
|
|
Me@50
|
494
|
|
Me@50
|
495 req.reqType = VMSSemantic;
|
|
Me@50
|
496 req.semReqData = semReqData;
|
|
Me@50
|
497 req.nextReqst = callingPr->requests; //gab any other preceeding
|
|
Me@50
|
498 callingPr->requests = &req;
|
|
Me@50
|
499
|
|
Me@50
|
500 VMS__suspend_procr( callingPr );
|
|
Me@50
|
501 }
|
|
Me@50
|
502
|
|
Me@50
|
503
|
|
Me@50
|
504 /*
|
|
Me@38
|
505 */
|
|
Me@24
|
506 VMSReqst *
|
|
Me@50
|
507 VMS__take_next_request_out_of( VirtProcr *procrWithReq )
|
|
Me@31
|
508 { VMSReqst *req;
|
|
Me@31
|
509
|
|
Me@31
|
510 req = procrWithReq->requests;
|
|
Me@38
|
511 if( req == NULL ) return NULL;
|
|
Me@31
|
512
|
|
Me@31
|
513 procrWithReq->requests = procrWithReq->requests->nextReqst;
|
|
Me@50
|
514 return req;
|
|
Me@24
|
515 }
|
|
Me@22
|
516
|
|
Me@24
|
517
|
|
Me@24
|
518 inline void *
|
|
Me@24
|
519 VMS__take_sem_reqst_from( VMSReqst *req )
|
|
Me@24
|
520 {
|
|
Me@24
|
521 return req->semReqData;
|
|
Me@24
|
522 }
|
|
Me@24
|
523
|
|
Me@24
|
524
|
|
Me@24
|
525
|
|
Me@50
|
526 /* This is for OS requests and VMS infrastructure requests, such as to create
|
|
Me@50
|
527 * a probe -- a probe is inside the heart of VMS-core, it's not part of any
|
|
Me@50
|
528 * language -- but it's also a semantic thing that's triggered from and used
|
|
Me@50
|
529 * in the application.. so it crosses abstractions.. so, need some special
|
|
Me@50
|
530 * pattern here for handling such requests.
|
|
Me@52
|
531 * Doing this just like it were a second language sharing VMS-core.
|
|
Me@52
|
532 *
|
|
Me@50
|
533 * This is called from the language's request handler when it sees a request
|
|
Me@50
|
534 * of type VMSSemReq
|
|
Me@52
|
535 *
|
|
Me@52
|
536 * TODO: Later change this, to give probes their own separate plugin & have
|
|
Me@52
|
537 * VMS-core steer the request to appropriate plugin
|
|
Me@52
|
538 * Do the same for OS calls -- look later at it..
|
|
Me@50
|
539 */
|
|
Me@50
|
540 void inline
|
|
Me@50
|
541 VMS__handle_VMSSemReq( VMSReqst *req, VirtProcr *requestingPr, void *semEnv,
|
|
Me@50
|
542 ResumePrFnPtr resumePrFnPtr )
|
|
Me@50
|
543 { VMSSemReq *semReq;
|
|
Me@50
|
544 IntervalProbe *newProbe;
|
|
Me@24
|
545
|
|
Me@50
|
546 semReq = req->semReqData;
|
|
Me@24
|
547
|
|
msach@201
|
548 newProbe = VMS_int__malloc( sizeof(IntervalProbe) );
|
|
msach@201
|
549 newProbe->nameStr = VMS_int__strDup( semReq->nameStr );
|
|
Me@50
|
550 newProbe->hist = NULL;
|
|
Me@50
|
551 newProbe->schedChoiceWasRecorded = FALSE;
|
|
Me@53
|
552
|
|
Me@53
|
553 //This runs in masterVP, so no race-condition worries
|
|
Me@50
|
554 newProbe->probeID =
|
|
Me@50
|
555 addToDynArray( newProbe, _VMSMasterEnv->dynIntervalProbesInfo );
|
|
Me@50
|
556
|
|
Me@53
|
557 requestingPr->dataRetFromReq = newProbe;
|
|
Me@50
|
558
|
|
Me@50
|
559 (*resumePrFnPtr)( requestingPr, semEnv );
|
|
Me@22
|
560 }
|
|
Me@22
|
561
|
|
Me@22
|
562
|
|
Me@22
|
563
|
|
Me@24
|
564 /*This must be called by the request handler plugin -- it cannot be called
|
|
Me@24
|
565 * from the semantic library "dissipate processor" function -- instead, the
|
|
Me@50
|
566 * semantic layer has to generate a request, and the plug-in calls this
|
|
Me@24
|
567 * function.
|
|
Me@24
|
568 *The reason is that this frees the virtual processor's stack -- which is
|
|
Me@24
|
569 * still in use inside semantic library calls!
|
|
Me@24
|
570 *
|
|
Me@24
|
571 *This frees or recycles all the state owned by and comprising the VMS
|
|
Me@24
|
572 * portion of the animating virtual procr. The request handler must first
|
|
Me@24
|
573 * free any semantic data created for the processor that didn't use the
|
|
Me@24
|
574 * VMS_malloc mechanism. Then it calls this, which first asks the malloc
|
|
Me@24
|
575 * system to disown any state that did use VMS_malloc, and then frees the
|
|
Me@24
|
576 * statck and the processor-struct itself.
|
|
msach@201
|
577 *If the dissipated processor is the sole (remaining) owner of VMS_int__malloc'd
|
|
Me@24
|
578 * state, then that state gets freed (or sent to recycling) as a side-effect
|
|
Me@24
|
579 * of dis-owning it.
|
|
Me@24
|
580 */
|
|
Me@24
|
581 void
|
|
Me@53
|
582 VMS__dissipate_procr( VirtProcr *animatingPr )
|
|
Me@24
|
583 {
|
|
Me@24
|
584 //dis-own all locations owned by this processor, causing to be freed
|
|
Me@24
|
585 // any locations that it is (was) sole owner of
|
|
msach@201
|
586 //TODO: implement VMS_int__malloc system, including "give up ownership"
|
|
Me@24
|
587
|
|
Me@24
|
588
|
|
Me@24
|
589 //NOTE: initialData was given to the processor, so should either have
|
|
msach@201
|
590 // been alloc'd with VMS_int__malloc, or freed by the level above animPr.
|
|
Me@24
|
591 //So, all that's left to free here is the stack and the VirtProcr struc
|
|
Me@24
|
592 // itself
|
|
Me@50
|
593 //Note, should not stack-allocate initial data -- no guarantee, in
|
|
Me@50
|
594 // general that creating processor will outlive ones it creates.
|
|
msach@174
|
595 free( animatingPr->startOfStack );
|
|
msach@174
|
596 free( animatingPr );
|
|
Me@24
|
597 }
|
|
Me@24
|
598
|
|
Me@24
|
599
|
|
Me@53
|
600 //TODO: look at architecting cleanest separation between request handler
|
|
Me@29
|
601 // and master loop, for dissipate, create, shutdown, and other non-semantic
|
|
Me@29
|
602 // requests. Issue is chain: one removes requests from AppVP, one dispatches
|
|
Me@29
|
603 // on type of request, and one handles each type.. but some types require
|
|
Me@29
|
604 // action from both request handler and master loop -- maybe just give the
|
|
Me@29
|
605 // request handler calls like: VMS__handle_X_request_type
|
|
Me@24
|
606
|
|
Me@29
|
607
|
|
Me@29
|
608 /*This is called by the semantic layer's request handler when it decides its
|
|
Me@29
|
609 * time to shut down the VMS system. Calling this causes the core loop OS
|
|
Me@29
|
610 * threads to exit, which unblocks the entry-point function that started up
|
|
Me@29
|
611 * VMS, and allows it to grab the result and return to the original single-
|
|
Me@29
|
612 * threaded application.
|
|
Me@22
|
613 *
|
|
Me@29
|
614 *The _VMSMasterEnv is needed by this shut down function, so the create-seed-
|
|
Me@29
|
615 * and-wait function has to free a bunch of stuff after it detects the
|
|
Me@29
|
616 * threads have all died: the masterEnv, the thread-related locations,
|
|
Me@29
|
617 * masterVP any AppVPs that might still be allocated and sitting in the
|
|
Me@29
|
618 * semantic environment, or have been orphaned in the _VMSWorkQ.
|
|
Me@29
|
619 *
|
|
msach@201
|
620 *NOTE: the semantic plug-in is expected to use VMS_int__malloc to get all the
|
|
Me@29
|
621 * locations it needs, and give ownership to masterVP. Then, they will be
|
|
Me@53
|
622 * automatically freed.
|
|
Me@22
|
623 *
|
|
Me@29
|
624 *In here,create one core-loop shut-down processor for each core loop and put
|
|
Me@31
|
625 * them all directly into the readyToAnimateQ.
|
|
Me@29
|
626 *Note, this function can ONLY be called after the semantic environment no
|
|
Me@29
|
627 * longer cares if AppVPs get animated after the point this is called. In
|
|
Me@29
|
628 * other words, this can be used as an abort, or else it should only be
|
|
Me@29
|
629 * called when all AppVPs have finished dissipate requests -- only at that
|
|
Me@29
|
630 * point is it sure that all results have completed.
|
|
Me@22
|
631 */
|
|
Me@22
|
632 void
|
|
Me@53
|
633 VMS__shutdown()
|
|
Me@8
|
634 { int coreIdx;
|
|
Me@14
|
635 VirtProcr *shutDownPr;
|
|
Me@22
|
636
|
|
Me@29
|
637 //create the shutdown processors, one for each core loop -- put them
|
|
Me@31
|
638 // directly into the Q -- each core will die when gets one
|
|
Me@8
|
639 for( coreIdx=0; coreIdx < NUM_CORES; coreIdx++ )
|
|
Me@50
|
640 { //Note, this is running in the master
|
|
Me@29
|
641 shutDownPr = VMS__create_procr( &endOSThreadFn, NULL );
|
|
Me@55
|
642 writeVMSQ( shutDownPr, _VMSMasterEnv->readyToAnimateQs[coreIdx] );
|
|
Me@8
|
643 }
|
|
Me@22
|
644
|
|
Me@12
|
645 }
|
|
Me@12
|
646
|
|
Me@12
|
647
|
|
Me@29
|
648 /*Am trying to be cute, avoiding IF statement in coreLoop that checks for
|
|
Me@29
|
649 * a special shutdown procr. Ended up with extra-complex shutdown sequence.
|
|
Me@29
|
650 *This function has the sole purpose of setting the stack and framePtr
|
|
Me@29
|
651 * to the coreLoop's stack and framePtr.. it does that then jumps to the
|
|
Me@29
|
652 * core loop's shutdown point -- might be able to just call Pthread_exit
|
|
Me@30
|
653 * from here, but am going back to the pthread's stack and setting everything
|
|
Me@29
|
654 * up just as if it never jumped out, before calling pthread_exit.
|
|
Me@29
|
655 *The end-point of core loop will free the stack and so forth of the
|
|
Me@29
|
656 * processor that animates this function, (this fn is transfering the
|
|
Me@29
|
657 * animator of the AppVP that is in turn animating this function over
|
|
Me@29
|
658 * to core loop function -- note that this slices out a level of virtual
|
|
Me@29
|
659 * processors).
|
|
Me@29
|
660 */
|
|
Me@29
|
661 void
|
|
Me@29
|
662 endOSThreadFn( void *initData, VirtProcr *animatingPr )
|
|
msach@71
|
663 {
|
|
msach@75
|
664 #ifdef SEQUENTIAL
|
|
msach@75
|
665 asmTerminateCoreLoopSeq(animatingPr);
|
|
msach@75
|
666 #else
|
|
msach@71
|
667 asmTerminateCoreLoop(animatingPr);
|
|
msach@75
|
668 #endif
|
|
Me@29
|
669 }
|
|
Me@29
|
670
|
|
Me@29
|
671
|
|
Me@53
|
672 /*This is called from the startup & shutdown
|
|
Me@24
|
673 */
|
|
Me@24
|
674 void
|
|
Me@53
|
675 VMS__cleanup_at_end_of_shutdown()
|
|
Me@31
|
676 {
|
|
msach@78
|
677 //unused
|
|
msach@78
|
678 //VMSQueueStruc **readyToAnimateQs;
|
|
msach@78
|
679 //int coreIdx;
|
|
msach@78
|
680 //VirtProcr **masterVPs;
|
|
msach@78
|
681 //SchedSlot ***allSchedSlots; //ptr to array of ptrs
|
|
Me@31
|
682
|
|
Me@65
|
683 //Before getting rid of everything, print out any measurements made
|
|
msach@102
|
684 //forAllInDynArrayDo( _VMSMasterEnv->measHistsInfo, (DynArrayFnPtr)&printHist );
|
|
msach@102
|
685 //forAllInDynArrayDo( _VMSMasterEnv->measHistsInfo, (DynArrayFnPtr)&saveHistToFile);
|
|
Me@68
|
686 //forAllInDynArrayDo( _VMSMasterEnv->measHistsInfo, &freeHistExt );
|
|
msach@169
|
687 /*
|
|
Me@65
|
688 #ifdef MEAS__TIME_PLUGIN
|
|
Me@68
|
689 printHist( _VMSMasterEnv->reqHdlrLowTimeHist );
|
|
msach@84
|
690 saveHistToFile( _VMSMasterEnv->reqHdlrLowTimeHist );
|
|
Me@68
|
691 printHist( _VMSMasterEnv->reqHdlrHighTimeHist );
|
|
msach@79
|
692 saveHistToFile( _VMSMasterEnv->reqHdlrHighTimeHist );
|
|
Me@68
|
693 freeHistExt( _VMSMasterEnv->reqHdlrLowTimeHist );
|
|
Me@68
|
694 freeHistExt( _VMSMasterEnv->reqHdlrHighTimeHist );
|
|
Me@65
|
695 #endif
|
|
Me@65
|
696 #ifdef MEAS__TIME_MALLOC
|
|
Me@65
|
697 printHist( _VMSMasterEnv->mallocTimeHist );
|
|
msach@79
|
698 saveHistToFile( _VMSMasterEnv->mallocTimeHist );
|
|
Me@65
|
699 printHist( _VMSMasterEnv->freeTimeHist );
|
|
msach@79
|
700 saveHistToFile( _VMSMasterEnv->freeTimeHist );
|
|
Me@65
|
701 freeHistExt( _VMSMasterEnv->mallocTimeHist );
|
|
Me@65
|
702 freeHistExt( _VMSMasterEnv->freeTimeHist );
|
|
Me@65
|
703 #endif
|
|
Me@65
|
704 #ifdef MEAS__TIME_MASTER_LOCK
|
|
Me@65
|
705 printHist( _VMSMasterEnv->masterLockLowTimeHist );
|
|
Me@65
|
706 printHist( _VMSMasterEnv->masterLockHighTimeHist );
|
|
Me@65
|
707 #endif
|
|
Me@65
|
708 #ifdef MEAS__TIME_MASTER
|
|
Me@65
|
709 printHist( _VMSMasterEnv->pluginTimeHist );
|
|
Me@65
|
710 for( coreIdx = 0; coreIdx < NUM_CORES; coreIdx++ )
|
|
Me@65
|
711 {
|
|
Me@65
|
712 freeVMSQ( readyToAnimateQs[ coreIdx ] );
|
|
Me@65
|
713 //master VPs were created external to VMS, so use external free
|
|
Me@65
|
714 VMS__dissipate_procr( masterVPs[ coreIdx ] );
|
|
Me@65
|
715
|
|
Me@65
|
716 freeSchedSlots( allSchedSlots[ coreIdx ] );
|
|
Me@65
|
717 }
|
|
Me@65
|
718 #endif
|
|
msach@169
|
719 */
|
|
Me@65
|
720 #ifdef MEAS__TIME_STAMP_SUSP
|
|
Me@65
|
721 printHist( _VMSMasterEnv->pluginTimeHist );
|
|
Me@65
|
722 for( coreIdx = 0; coreIdx < NUM_CORES; coreIdx++ )
|
|
Me@65
|
723 {
|
|
Me@65
|
724 freeVMSQ( readyToAnimateQs[ coreIdx ] );
|
|
Me@65
|
725 //master VPs were created external to VMS, so use external free
|
|
Me@65
|
726 VMS__dissipate_procr( masterVPs[ coreIdx ] );
|
|
Me@65
|
727
|
|
Me@65
|
728 freeSchedSlots( allSchedSlots[ coreIdx ] );
|
|
Me@65
|
729 }
|
|
Me@65
|
730 #endif
|
|
Me@65
|
731
|
|
msach@201
|
732 //All the environment data has been allocated with VMS_int__malloc, so just
|
|
Me@53
|
733 // free its internal big-chunk and all inside it disappear.
|
|
Me@53
|
734 /*
|
|
Me@31
|
735 readyToAnimateQs = _VMSMasterEnv->readyToAnimateQs;
|
|
Me@31
|
736 masterVPs = _VMSMasterEnv->masterVPs;
|
|
Me@31
|
737 allSchedSlots = _VMSMasterEnv->allSchedSlots;
|
|
Me@31
|
738
|
|
Me@31
|
739 for( coreIdx = 0; coreIdx < NUM_CORES; coreIdx++ )
|
|
Me@24
|
740 {
|
|
Me@55
|
741 freeVMSQ( readyToAnimateQs[ coreIdx ] );
|
|
Me@50
|
742 //master VPs were created external to VMS, so use external free
|
|
Me@53
|
743 VMS__dissipate_procr( masterVPs[ coreIdx ] );
|
|
Me@31
|
744
|
|
Me@31
|
745 freeSchedSlots( allSchedSlots[ coreIdx ] );
|
|
Me@24
|
746 }
|
|
Me@31
|
747
|
|
msach@201
|
748 VMS_int__free( _VMSMasterEnv->readyToAnimateQs );
|
|
msach@201
|
749 VMS_int__free( _VMSMasterEnv->masterVPs );
|
|
msach@201
|
750 VMS_int__free( _VMSMasterEnv->allSchedSlots );
|
|
Me@50
|
751
|
|
Me@50
|
752 //============================= MEASUREMENT STUFF ========================
|
|
Me@50
|
753 #ifdef STATS__TURN_ON_PROBES
|
|
msach@201
|
754 freeDynArrayDeep( _VMSMasterEnv->dynIntervalProbesInfo, &VMS_int__free_probe);
|
|
Me@50
|
755 #endif
|
|
Me@50
|
756 //========================================================================
|
|
Me@53
|
757 */
|
|
Me@53
|
758 //These are the only two that use system free
|
|
msach@101
|
759 VMS_ext__free_free_list( _VMSMasterEnv->freeLists );
|
|
Me@53
|
760 free( (void *)_VMSMasterEnv );
|
|
Me@24
|
761 }
|
|
Me@24
|
762
|
|
Me@54
|
763
|
|
Me@54
|
764 //================================
|
|
Me@54
|
765
|
|
Me@54
|
766
|
|
Me@54
|
767 /*Later, improve this -- for now, just exits the application after printing
|
|
Me@54
|
768 * the error message.
|
|
Me@54
|
769 */
|
|
Me@54
|
770 void
|
|
Me@54
|
771 VMS__throw_exception( char *msgStr, VirtProcr *reqstPr, VMSExcp *excpData )
|
|
Me@54
|
772 {
|
|
msach@69
|
773 printf("%s",msgStr);
|
|
Me@54
|
774 fflush(stdin);
|
|
Me@54
|
775 exit(1);
|
|
Me@54
|
776 }
|
|
Me@54
|
777
|
|
msach@169
|
778 //======================= Measurement =======================
|
|
msach@169
|
779 #ifdef MEAS__TIME_2011_SYS
|
|
msach@169
|
780 uint64
|
|
msach@169
|
781 VMS__give_num_plugin_cycles()
|
|
msach@169
|
782 { return _VMSMasterEnv->totalPluginCycles;
|
|
msach@169
|
783 }
|
|
msach@169
|
784
|
|
msach@169
|
785 uint32
|
|
msach@169
|
786 VMS__give_num_plugin_animations()
|
|
msach@169
|
787 { return _VMSMasterEnv->numPluginAnimations;
|
|
msach@169
|
788 }
|
|
msach@169
|
789 #endif
|
