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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 #include <linux/perf_event.h>
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20 #include <syscall.h>
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21 #include <sys/prctl.h>
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22
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23 #define thdAttrs NULL
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24
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25 //===========================================================================
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26 void
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27 shutdownFn( void *dummy, VirtProcr *dummy2 );
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28
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29 SchedSlot **
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30 create_sched_slots();
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31
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32 void
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33 create_masterEnv();
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34
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35 void
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36 create_the_coreLoop_OS_threads();
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37
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38 MallocProlog *
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39 create_free_list();
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40
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41 void
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42 endOSThreadFn( void *initData, VirtProcr *animatingPr );
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43
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44 pthread_mutex_t suspendLock = PTHREAD_MUTEX_INITIALIZER;
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45 pthread_cond_t suspend_cond = PTHREAD_COND_INITIALIZER;
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46
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47 //===========================================================================
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48
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49 /*Setup has two phases:
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50 * 1) Semantic layer first calls init_VMS, which creates masterEnv, and puts
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51 * the master virt procr into the work-queue, ready for first "call"
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52 * 2) Semantic layer then does its own init, which creates the seed virt
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53 * procr inside the semantic layer, ready to schedule it when
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54 * asked by the first run of the masterLoop.
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55 *
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56 *This part is bit weird because VMS really wants to be "always there", and
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57 * have applications attach and detach.. for now, this VMS is part of
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58 * the app, so the VMS system starts up as part of running the app.
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59 *
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60 *The semantic layer is isolated from the VMS internals by making the
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61 * semantic layer do setup to a state that it's ready with its
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62 * initial virt procrs, ready to schedule them to slots when the masterLoop
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63 * asks. Without this pattern, the semantic layer's setup would
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64 * have to modify slots directly to assign the initial virt-procrs, and put
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65 * them into the readyToAnimateQ itself, breaking the isolation completely.
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66 *
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67 *
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68 *The semantic layer creates the initial virt procr(s), and adds its
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69 * own environment to masterEnv, and fills in the pointers to
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70 * the requestHandler and slaveScheduler plug-in functions
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71 */
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72
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73 /*This allocates VMS data structures, populates the master VMSProc,
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74 * and master environment, and returns the master environment to the semantic
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75 * layer.
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76 */
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77 void
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78 VMS__init()
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79 {
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80 create_masterEnv();
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81 create_the_coreLoop_OS_threads();
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82 }
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83
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84 #ifdef SEQUENTIAL
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85
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86 /*To initialize the sequential version, just don't create the threads
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87 */
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88 void
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89 VMS__init_Seq()
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90 {
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91 create_masterEnv();
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92 }
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93
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94 #endif
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95
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96 void
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97 create_masterEnv()
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98 { MasterEnv *masterEnv;
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99 VMSQueueStruc **readyToAnimateQs;
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100 int coreIdx;
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101 VirtProcr **masterVPs;
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102 SchedSlot ***allSchedSlots; //ptr to array of ptrs
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103
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104
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105 //Make the master env, which holds everything else
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106 _VMSMasterEnv = malloc( sizeof(MasterEnv) );
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107
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108 //Very first thing put into the master env is the free-list, seeded
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109 // with a massive initial chunk of memory.
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110 //After this, all other mallocs are VMS__malloc.
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111 _VMSMasterEnv->freeListHead = VMS_ext__create_free_list();
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112
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113
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114 //============================= MEASUREMENT STUFF ========================
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115 #ifdef MEAS__TIME_MALLOC
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116 _VMSMasterEnv->mallocTimeHist = makeFixedBinHistExt( 50, 0, 100,
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117 "malloc_time_hist");
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118 _VMSMasterEnv->freeTimeHist = makeFixedBinHistExt( 50, 0, 100,
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119 "free_time_hist");
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120 #endif
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121 #ifdef MEAS__TIME_PLUGIN
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122 _VMSMasterEnv->reqHdlrLowTimeHist = makeFixedBinHistExt( 50, 0, 10,
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123 "plugin_low_time_hist");
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124 _VMSMasterEnv->reqHdlrHighTimeHist = makeFixedBinHistExt( 50, 0, 100,
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125 "plugin_high_time_hist");
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126 #endif
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127 //========================================================================
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128
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129 //===================== Only VMS__malloc after this ====================
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130 masterEnv = (MasterEnv*)_VMSMasterEnv;
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131
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132 //Make a readyToAnimateQ for each core loop
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133 readyToAnimateQs = VMS__malloc( NUM_CORES * sizeof(VMSQueueStruc *) );
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134 masterVPs = VMS__malloc( NUM_CORES * sizeof(VirtProcr *) );
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135
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136 //One array for each core, 3 in array, core's masterVP scheds all
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137 allSchedSlots = VMS__malloc( NUM_CORES * sizeof(SchedSlot *) );
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138
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139 _VMSMasterEnv->numProcrsCreated = 0; //used by create procr
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140 for( coreIdx = 0; coreIdx < NUM_CORES; coreIdx++ )
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141 {
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142 readyToAnimateQs[ coreIdx ] = makeVMSQ();
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143
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144 //Q: should give masterVP core-specific info as its init data?
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145 masterVPs[ coreIdx ] = VMS__create_procr( (VirtProcrFnPtr)&masterLoop, (void*)masterEnv );
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146 masterVPs[ coreIdx ]->coreAnimatedBy = coreIdx;
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147 allSchedSlots[ coreIdx ] = create_sched_slots(); //makes for one core
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148 _VMSMasterEnv->numMasterInARow[ coreIdx ] = 0;
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149 _VMSMasterEnv->workStealingGates[ coreIdx ] = NULL;
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150 }
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151 _VMSMasterEnv->readyToAnimateQs = readyToAnimateQs;
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152 _VMSMasterEnv->masterVPs = masterVPs;
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153 _VMSMasterEnv->masterLock = UNLOCKED;
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154 _VMSMasterEnv->allSchedSlots = allSchedSlots;
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155 _VMSMasterEnv->workStealingLock = UNLOCKED;
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156
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157
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158 //Aug 19, 2010: no longer need to place initial masterVP into queue
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159 // because coreLoop now controls -- animates its masterVP when no work
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160
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161
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162 //============================= MEASUREMENT STUFF ========================
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163 #ifdef STATS__TURN_ON_PROBES
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164 _VMSMasterEnv->dynIntervalProbesInfo =
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165 makePrivDynArrayOfSize( (void***)&(_VMSMasterEnv->intervalProbes), 200);
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166
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167 _VMSMasterEnv->probeNameHashTbl = makeHashTable( 1000, &VMS__free );
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168
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169 //put creation time directly into master env, for fast retrieval
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170 struct timeval timeStamp;
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171 gettimeofday( &(timeStamp), NULL);
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172 _VMSMasterEnv->createPtInSecs =
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173 timeStamp.tv_sec +(timeStamp.tv_usec/1000000.0);
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174 #endif
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175 #ifdef MEAS__TIME_MASTER_LOCK
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176 _VMSMasterEnv->masterLockLowTimeHist = makeFixedBinHist( 50, 0, 2,
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177 "master lock low time hist");
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178 _VMSMasterEnv->masterLockHighTimeHist = makeFixedBinHist( 50, 0, 100,
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179 "master lock high time hist");
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180 #endif
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181
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182 MakeTheMeasHists();
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183
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184 #ifdef MEAS__PERF_COUNTER
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185 printf("Creating HW counters...");
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186 struct perf_event_attr hw_event;
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187 hw_event.type = PERF_TYPE_HARDWARE;
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188 hw_event.size = sizeof(struct perf_event_attr);
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189 hw_event.disabled = 1;
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190 hw_event.inherit = 1; /* children inherit it */
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191 hw_event.pinned = 1; /* must always be on PMU */
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192 hw_event.exclusive = 0; /* only group on PMU */
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193 hw_event.exclude_user = 0; /* don't count user */
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194 hw_event.exclude_kernel = 1; /* ditto kernel */
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195 hw_event.exclude_hv = 1; /* ditto hypervisor */
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196 hw_event.exclude_idle = 0; /* don't count when idle */
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197 hw_event.mmap = 0; /* include mmap data */
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198 hw_event.comm = 0; /* include comm data */
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199
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200 for( coreIdx = 0; coreIdx < NUM_CORES; coreIdx++ )
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201 {
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202 hw_event.config = PERF_COUNT_HW_CPU_CYCLES; //cycles
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203 _VMSMasterEnv->cycles_counter_fd[coreIdx] = syscall(__NR_perf_event_open, &hw_event,
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204 0,//pid_t pid,
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205 coreIdx,//int cpu,
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206 -1,//int group_fd,
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207 0//unsigned long flags
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208 );
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209 hw_event.config = PERF_COUNT_HW_INSTRUCTIONS; //instrs
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210 _VMSMasterEnv->instrs_counter_fd[coreIdx] = syscall(__NR_perf_event_open, &hw_event,
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211 0,//pid_t pid,
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212 coreIdx,//int cpu,
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213 -1,//int group_fd,
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214 0//unsigned long flags
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215 );
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216 }
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217 prctl(PR_TASK_PERF_EVENTS_ENABLE);
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218 #endif
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219
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220 //========================================================================
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221
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222 }
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223
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224 SchedSlot **
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225 create_sched_slots()
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226 { SchedSlot **schedSlots;
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227 int i;
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228
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229 schedSlots = VMS__malloc( NUM_SCHED_SLOTS * sizeof(SchedSlot *) );
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230
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231 for( i = 0; i < NUM_SCHED_SLOTS; i++ )
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232 {
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233 schedSlots[i] = VMS__malloc( sizeof(SchedSlot) );
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234
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235 //Set state to mean "handling requests done, slot needs filling"
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236 schedSlots[i]->workIsDone = FALSE;
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237 schedSlots[i]->needsProcrAssigned = TRUE;
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238 }
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239 return schedSlots;
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240 }
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241
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242
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243 void
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244 freeSchedSlots( SchedSlot **schedSlots )
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245 { int i;
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246 for( i = 0; i < NUM_SCHED_SLOTS; i++ )
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247 {
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248 VMS__free( schedSlots[i] );
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249 }
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250 VMS__free( schedSlots );
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251 }
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252
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253
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254 void
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255 create_the_coreLoop_OS_threads()
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256 {
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257 //========================================================================
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258 // Create the Threads
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259 int coreIdx, retCode;
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260
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261 //Need the threads to be created suspended, and wait for a signal
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262 // before proceeding -- gives time after creating to initialize other
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263 // stuff before the coreLoops set off.
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264 _VMSMasterEnv->setupComplete = 0;
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265
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266 //Make the threads that animate the core loops
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267 for( coreIdx=0; coreIdx < NUM_CORES; coreIdx++ )
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268 { coreLoopThdParams[coreIdx] = VMS__malloc( sizeof(ThdParams) );
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269 coreLoopThdParams[coreIdx]->coreNum = coreIdx;
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270
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271 retCode =
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272 pthread_create( &(coreLoopThdHandles[coreIdx]),
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273 thdAttrs,
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274 &coreLoop,
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275 (void *)(coreLoopThdParams[coreIdx]) );
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276 if(retCode){printf("ERROR creating thread: %d\n", retCode); exit(1);}
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277 }
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278 }
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279
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280 /*Semantic layer calls this when it want the system to start running..
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281 *
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282 *This starts the core loops running then waits for them to exit.
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283 */
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284 void
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285 VMS__start_the_work_then_wait_until_done()
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286 { int coreIdx;
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287 //Start the core loops running
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288
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289 //tell the core loop threads that setup is complete
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290 //get lock, to lock out any threads still starting up -- they'll see
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291 // that setupComplete is true before entering while loop, and so never
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292 // wait on the condition
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293 pthread_mutex_lock( &suspendLock );
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294 _VMSMasterEnv->setupComplete = 1;
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295 pthread_mutex_unlock( &suspendLock );
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296 pthread_cond_broadcast( &suspend_cond );
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297
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298
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299 //wait for all to complete
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300 for( coreIdx=0; coreIdx < NUM_CORES; coreIdx++ )
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301 {
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302 pthread_join( coreLoopThdHandles[coreIdx], NULL );
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303 }
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304
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305 //NOTE: do not clean up VMS env here -- semantic layer has to have
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306 // a chance to clean up its environment first, then do a call to free
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307 // the Master env and rest of VMS locations
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308 }
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309
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310 #ifdef SEQUENTIAL
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311 /*Only difference between version with an OS thread pinned to each core and
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312 * the sequential version of VMS is VMS__init_Seq, this, and coreLoop_Seq.
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313 */
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314 void
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315 VMS__start_the_work_then_wait_until_done_Seq()
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316 {
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317 //Instead of un-suspending threads, just call the one and only
|
|
Me@28
|
318 // core loop (sequential version), in the main thread.
|
|
Me@28
|
319 coreLoop_Seq( NULL );
|
|
msach@75
|
320 flushRegisters();
|
|
Me@28
|
321
|
|
Me@28
|
322 }
|
|
msach@71
|
323 #endif
|
|
Me@0
|
324
|
|
Me@50
|
325 inline VirtProcr *
|
|
Me@50
|
326 VMS__create_procr( VirtProcrFnPtr fnPtr, void *initialData )
|
|
Me@50
|
327 { VirtProcr *newPr;
|
|
msach@76
|
328 void *stackLocs;
|
|
Me@50
|
329
|
|
Me@50
|
330 newPr = VMS__malloc( sizeof(VirtProcr) );
|
|
Me@50
|
331 stackLocs = VMS__malloc( VIRT_PROCR_STACK_SIZE );
|
|
Me@50
|
332 if( stackLocs == 0 )
|
|
Me@50
|
333 { perror("VMS__malloc stack"); exit(1); }
|
|
Me@50
|
334
|
|
Me@50
|
335 return create_procr_helper( newPr, fnPtr, initialData, stackLocs );
|
|
Me@50
|
336 }
|
|
Me@50
|
337
|
|
Me@50
|
338 /* "ext" designates that it's for use outside the VMS system -- should only
|
|
Me@50
|
339 * be called from main thread or other thread -- never from code animated by
|
|
Me@50
|
340 * a VMS virtual processor.
|
|
Me@50
|
341 */
|
|
Me@50
|
342 inline VirtProcr *
|
|
Me@50
|
343 VMS_ext__create_procr( VirtProcrFnPtr fnPtr, void *initialData )
|
|
Me@50
|
344 { VirtProcr *newPr;
|
|
Me@50
|
345 char *stackLocs;
|
|
Me@50
|
346
|
|
Me@50
|
347 newPr = malloc( sizeof(VirtProcr) );
|
|
Me@50
|
348 stackLocs = malloc( VIRT_PROCR_STACK_SIZE );
|
|
Me@50
|
349 if( stackLocs == 0 )
|
|
Me@50
|
350 { perror("malloc stack"); exit(1); }
|
|
Me@50
|
351
|
|
Me@50
|
352 return create_procr_helper( newPr, fnPtr, initialData, stackLocs );
|
|
Me@50
|
353 }
|
|
Me@50
|
354
|
|
Me@8
|
355
|
|
Me@64
|
356 /*Anticipating multi-tasking
|
|
Me@64
|
357 */
|
|
Me@64
|
358 void *
|
|
Me@64
|
359 VMS__give_sem_env_for( VirtProcr *animPr )
|
|
Me@64
|
360 {
|
|
Me@64
|
361 return _VMSMasterEnv->semanticEnv;
|
|
Me@64
|
362 }
|
|
Me@64
|
363 //===========================================================================
|
|
Me@26
|
364 /*there is a label inside this function -- save the addr of this label in
|
|
Me@0
|
365 * the callingPr struc, as the pick-up point from which to start the next
|
|
Me@0
|
366 * work-unit for that procr. If turns out have to save registers, then
|
|
Me@0
|
367 * save them in the procr struc too. Then do assembly jump to the CoreLoop's
|
|
Me@0
|
368 * "done with work-unit" label. The procr struc is in the request in the
|
|
Me@0
|
369 * slave that animated the just-ended work-unit, so all the state is saved
|
|
Me@0
|
370 * there, and will get passed along, inside the request handler, to the
|
|
Me@0
|
371 * next work-unit for that procr.
|
|
Me@0
|
372 */
|
|
Me@8
|
373 void
|
|
Me@38
|
374 VMS__suspend_procr( VirtProcr *animatingPr )
|
|
Me@55
|
375 {
|
|
Me@0
|
376
|
|
Me@14
|
377 //The request to master will cause this suspended virt procr to get
|
|
Me@14
|
378 // scheduled again at some future point -- to resume, core loop jumps
|
|
Me@14
|
379 // to the resume point (below), which causes restore of saved regs and
|
|
Me@14
|
380 // "return" from this call.
|
|
msach@71
|
381 //animatingPr->nextInstrPt = &&ResumePt;
|
|
Me@1
|
382
|
|
Me@1
|
383 //return ownership of the virt procr and sched slot to Master virt pr
|
|
Me@38
|
384 animatingPr->schedSlot->workIsDone = TRUE;
|
|
Me@1
|
385
|
|
Me@41
|
386 //=========================== Measurement stuff ========================
|
|
Me@38
|
387 #ifdef MEAS__TIME_STAMP_SUSP
|
|
Me@41
|
388 //record time stamp: compare to time-stamp recorded below
|
|
Me@38
|
389 saveLowTimeStampCountInto( animatingPr->preSuspTSCLow );
|
|
Me@38
|
390 #endif
|
|
Me@41
|
391 //=======================================================================
|
|
Me@38
|
392
|
|
msach@71
|
393 switchToCoreLoop(animatingPr);
|
|
msach@71
|
394 flushRegisters();
|
|
Me@55
|
395
|
|
Me@55
|
396 //=======================================================================
|
|
msach@71
|
397
|
|
Me@38
|
398 #ifdef MEAS__TIME_STAMP_SUSP
|
|
Me@41
|
399 //NOTE: only take low part of count -- do sanity check when take diff
|
|
Me@38
|
400 saveLowTimeStampCountInto( animatingPr->postSuspTSCLow );
|
|
Me@38
|
401 #endif
|
|
Me@38
|
402
|
|
Me@0
|
403 return;
|
|
Me@0
|
404 }
|
|
Me@0
|
405
|
|
Me@22
|
406
|
|
Me@22
|
407
|
|
Me@50
|
408 /*For this implementation of VMS, it may not make much sense to have the
|
|
Me@50
|
409 * system of requests for creating a new processor done this way.. but over
|
|
Me@50
|
410 * the scope of single-master, multi-master, mult-tasking, OS-implementing,
|
|
Me@50
|
411 * distributed-memory, and so on, this gives VMS implementation a chance to
|
|
Me@50
|
412 * do stuff before suspend, in the AppVP, and in the Master before the plugin
|
|
Me@50
|
413 * is called, as well as in the lang-lib before this is called, and in the
|
|
Me@50
|
414 * plugin. So, this gives both VMS and language implementations a chance to
|
|
Me@50
|
415 * intercept at various points and do order-dependent stuff.
|
|
Me@50
|
416 *Having a standard VMSNewPrReqData struc allows the language to create and
|
|
Me@50
|
417 * free the struc, while VMS knows how to get the newPr if it wants it, and
|
|
Me@50
|
418 * it lets the lang have lang-specific data related to creation transported
|
|
Me@50
|
419 * to the plugin.
|
|
Me@50
|
420 */
|
|
Me@50
|
421 void
|
|
Me@50
|
422 VMS__send_create_procr_req( void *semReqData, VirtProcr *reqstingPr )
|
|
Me@50
|
423 { VMSReqst req;
|
|
Me@50
|
424
|
|
Me@50
|
425 req.reqType = createReq;
|
|
Me@50
|
426 req.semReqData = semReqData;
|
|
Me@50
|
427 req.nextReqst = reqstingPr->requests;
|
|
Me@50
|
428 reqstingPr->requests = &req;
|
|
Me@50
|
429
|
|
Me@50
|
430 VMS__suspend_procr( reqstingPr );
|
|
Me@50
|
431 }
|
|
Me@50
|
432
|
|
Me@22
|
433
|
|
Me@38
|
434 /*
|
|
Me@22
|
435 *This adds a request to dissipate, then suspends the processor so that the
|
|
Me@22
|
436 * request handler will receive the request. The request handler is what
|
|
Me@22
|
437 * does the work of freeing memory and removing the processor from the
|
|
Me@22
|
438 * semantic environment's data structures.
|
|
Me@22
|
439 *The request handler also is what figures out when to shutdown the VMS
|
|
Me@22
|
440 * system -- which causes all the core loop threads to die, and returns from
|
|
Me@22
|
441 * the call that started up VMS to perform the work.
|
|
Me@22
|
442 *
|
|
Me@22
|
443 *This form is a bit misleading to understand if one is trying to figure out
|
|
Me@22
|
444 * how VMS works -- it looks like a normal function call, but inside it
|
|
Me@22
|
445 * sends a request to the request handler and suspends the processor, which
|
|
Me@22
|
446 * jumps out of the VMS__dissipate_procr function, and out of all nestings
|
|
Me@22
|
447 * above it, transferring the work of dissipating to the request handler,
|
|
Me@22
|
448 * which then does the actual work -- causing the processor that animated
|
|
Me@22
|
449 * the call of this function to disappear and the "hanging" state of this
|
|
Me@22
|
450 * function to just poof into thin air -- the virtual processor's trace
|
|
Me@22
|
451 * never returns from this call, but instead the virtual processor's trace
|
|
Me@22
|
452 * gets suspended in this call and all the virt processor's state disap-
|
|
Me@22
|
453 * pears -- making that suspend the last thing in the virt procr's trace.
|
|
Me@8
|
454 */
|
|
Me@8
|
455 void
|
|
Me@53
|
456 VMS__send_dissipate_req( VirtProcr *procrToDissipate )
|
|
Me@50
|
457 { VMSReqst req;
|
|
Me@22
|
458
|
|
Me@50
|
459 req.reqType = dissipate;
|
|
Me@50
|
460 req.nextReqst = procrToDissipate->requests;
|
|
Me@50
|
461 procrToDissipate->requests = &req;
|
|
Me@50
|
462
|
|
Me@22
|
463 VMS__suspend_procr( procrToDissipate );
|
|
Me@50
|
464 }
|
|
Me@50
|
465
|
|
Me@50
|
466
|
|
Me@50
|
467 /* "ext" designates that it's for use outside the VMS system -- should only
|
|
Me@50
|
468 * be called from main thread or other thread -- never from code animated by
|
|
Me@50
|
469 * a VMS virtual processor.
|
|
Me@50
|
470 *
|
|
Me@50
|
471 *Use this version to dissipate VPs created outside the VMS system.
|
|
Me@50
|
472 */
|
|
Me@50
|
473 void
|
|
Me@50
|
474 VMS_ext__dissipate_procr( VirtProcr *procrToDissipate )
|
|
Me@50
|
475 {
|
|
Me@50
|
476 //NOTE: initialData was given to the processor, so should either have
|
|
Me@50
|
477 // been alloc'd with VMS__malloc, or freed by the level above animPr.
|
|
Me@50
|
478 //So, all that's left to free here is the stack and the VirtProcr struc
|
|
Me@50
|
479 // itself
|
|
Me@50
|
480 //Note, should not stack-allocate initial data -- no guarantee, in
|
|
Me@50
|
481 // general that creating processor will outlive ones it creates.
|
|
Me@50
|
482 free( procrToDissipate->startOfStack );
|
|
Me@50
|
483 free( procrToDissipate );
|
|
Me@50
|
484 }
|
|
Me@50
|
485
|
|
Me@22
|
486
|
|
Me@22
|
487
|
|
Me@53
|
488 /*This call's name indicates that request is malloc'd -- so req handler
|
|
Me@53
|
489 * has to free any extra requests tacked on before a send, using this.
|
|
Me@53
|
490 *
|
|
Me@53
|
491 * This inserts the semantic-layer's request data into standard VMS carrier
|
|
Me@53
|
492 * request data-struct that is mallocd. The sem request doesn't need to
|
|
Me@53
|
493 * be malloc'd if this is called inside the same call chain before the
|
|
Me@53
|
494 * send of the last request is called.
|
|
Me@53
|
495 *
|
|
Me@53
|
496 *The request handler has to call VMS__free_VMSReq for any of these
|
|
Me@22
|
497 */
|
|
Me@22
|
498 inline void
|
|
Me@53
|
499 VMS__add_sem_request_in_mallocd_VMSReqst( void *semReqData,
|
|
Me@53
|
500 VirtProcr *callingPr )
|
|
Me@53
|
501 { VMSReqst *req;
|
|
Me@22
|
502
|
|
Me@53
|
503 req = VMS__malloc( sizeof(VMSReqst) );
|
|
Me@53
|
504 req->reqType = semantic;
|
|
Me@53
|
505 req->semReqData = semReqData;
|
|
Me@53
|
506 req->nextReqst = callingPr->requests;
|
|
Me@53
|
507 callingPr->requests = req;
|
|
Me@22
|
508 }
|
|
Me@22
|
509
|
|
Me@50
|
510 /*This inserts the semantic-layer's request data into standard VMS carrier
|
|
Me@50
|
511 * request data-struct is allocated on stack of this call & ptr to it sent
|
|
Me@50
|
512 * to plugin
|
|
Me@50
|
513 *Then it does suspend, to cause request to be sent.
|
|
Me@50
|
514 */
|
|
Me@50
|
515 inline void
|
|
Me@50
|
516 VMS__send_sem_request( void *semReqData, VirtProcr *callingPr )
|
|
Me@50
|
517 { VMSReqst req;
|
|
Me@22
|
518
|
|
Me@50
|
519 req.reqType = semantic;
|
|
Me@50
|
520 req.semReqData = semReqData;
|
|
Me@50
|
521 req.nextReqst = callingPr->requests;
|
|
Me@50
|
522 callingPr->requests = &req;
|
|
Me@50
|
523
|
|
Me@50
|
524 VMS__suspend_procr( callingPr );
|
|
Me@50
|
525 }
|
|
Me@50
|
526
|
|
Me@50
|
527
|
|
Me@50
|
528 inline void
|
|
Me@50
|
529 VMS__send_VMSSem_request( void *semReqData, VirtProcr *callingPr )
|
|
Me@50
|
530 { VMSReqst req;
|
|
Me@50
|
531
|
|
Me@50
|
532 req.reqType = VMSSemantic;
|
|
Me@50
|
533 req.semReqData = semReqData;
|
|
Me@50
|
534 req.nextReqst = callingPr->requests; //gab any other preceeding
|
|
Me@50
|
535 callingPr->requests = &req;
|
|
Me@50
|
536
|
|
Me@50
|
537 VMS__suspend_procr( callingPr );
|
|
Me@50
|
538 }
|
|
Me@50
|
539
|
|
Me@50
|
540
|
|
Me@50
|
541 /*
|
|
Me@38
|
542 */
|
|
Me@24
|
543 VMSReqst *
|
|
Me@50
|
544 VMS__take_next_request_out_of( VirtProcr *procrWithReq )
|
|
Me@31
|
545 { VMSReqst *req;
|
|
Me@31
|
546
|
|
Me@31
|
547 req = procrWithReq->requests;
|
|
Me@38
|
548 if( req == NULL ) return NULL;
|
|
Me@31
|
549
|
|
Me@31
|
550 procrWithReq->requests = procrWithReq->requests->nextReqst;
|
|
Me@50
|
551 return req;
|
|
Me@24
|
552 }
|
|
Me@22
|
553
|
|
Me@24
|
554
|
|
Me@24
|
555 inline void *
|
|
Me@24
|
556 VMS__take_sem_reqst_from( VMSReqst *req )
|
|
Me@24
|
557 {
|
|
Me@24
|
558 return req->semReqData;
|
|
Me@24
|
559 }
|
|
Me@24
|
560
|
|
Me@24
|
561
|
|
Me@24
|
562
|
|
Me@50
|
563 /* This is for OS requests and VMS infrastructure requests, such as to create
|
|
Me@50
|
564 * a probe -- a probe is inside the heart of VMS-core, it's not part of any
|
|
Me@50
|
565 * language -- but it's also a semantic thing that's triggered from and used
|
|
Me@50
|
566 * in the application.. so it crosses abstractions.. so, need some special
|
|
Me@50
|
567 * pattern here for handling such requests.
|
|
Me@52
|
568 * Doing this just like it were a second language sharing VMS-core.
|
|
Me@52
|
569 *
|
|
Me@50
|
570 * This is called from the language's request handler when it sees a request
|
|
Me@50
|
571 * of type VMSSemReq
|
|
Me@52
|
572 *
|
|
Me@52
|
573 * TODO: Later change this, to give probes their own separate plugin & have
|
|
Me@52
|
574 * VMS-core steer the request to appropriate plugin
|
|
Me@52
|
575 * Do the same for OS calls -- look later at it..
|
|
Me@50
|
576 */
|
|
Me@50
|
577 void inline
|
|
Me@50
|
578 VMS__handle_VMSSemReq( VMSReqst *req, VirtProcr *requestingPr, void *semEnv,
|
|
Me@50
|
579 ResumePrFnPtr resumePrFnPtr )
|
|
Me@50
|
580 { VMSSemReq *semReq;
|
|
Me@50
|
581 IntervalProbe *newProbe;
|
|
Me@24
|
582
|
|
Me@50
|
583 semReq = req->semReqData;
|
|
Me@24
|
584
|
|
Me@50
|
585 newProbe = VMS__malloc( sizeof(IntervalProbe) );
|
|
Me@65
|
586 newProbe->nameStr = VMS__strDup( semReq->nameStr );
|
|
Me@50
|
587 newProbe->hist = NULL;
|
|
Me@50
|
588 newProbe->schedChoiceWasRecorded = FALSE;
|
|
Me@53
|
589
|
|
Me@53
|
590 //This runs in masterVP, so no race-condition worries
|
|
Me@50
|
591 newProbe->probeID =
|
|
Me@50
|
592 addToDynArray( newProbe, _VMSMasterEnv->dynIntervalProbesInfo );
|
|
Me@50
|
593
|
|
Me@53
|
594 requestingPr->dataRetFromReq = newProbe;
|
|
Me@50
|
595
|
|
Me@50
|
596 (*resumePrFnPtr)( requestingPr, semEnv );
|
|
Me@22
|
597 }
|
|
Me@22
|
598
|
|
Me@22
|
599
|
|
Me@22
|
600
|
|
Me@24
|
601 /*This must be called by the request handler plugin -- it cannot be called
|
|
Me@24
|
602 * from the semantic library "dissipate processor" function -- instead, the
|
|
Me@50
|
603 * semantic layer has to generate a request, and the plug-in calls this
|
|
Me@24
|
604 * function.
|
|
Me@24
|
605 *The reason is that this frees the virtual processor's stack -- which is
|
|
Me@24
|
606 * still in use inside semantic library calls!
|
|
Me@24
|
607 *
|
|
Me@24
|
608 *This frees or recycles all the state owned by and comprising the VMS
|
|
Me@24
|
609 * portion of the animating virtual procr. The request handler must first
|
|
Me@24
|
610 * free any semantic data created for the processor that didn't use the
|
|
Me@24
|
611 * VMS_malloc mechanism. Then it calls this, which first asks the malloc
|
|
Me@24
|
612 * system to disown any state that did use VMS_malloc, and then frees the
|
|
Me@24
|
613 * statck and the processor-struct itself.
|
|
Me@24
|
614 *If the dissipated processor is the sole (remaining) owner of VMS__malloc'd
|
|
Me@24
|
615 * state, then that state gets freed (or sent to recycling) as a side-effect
|
|
Me@24
|
616 * of dis-owning it.
|
|
Me@24
|
617 */
|
|
Me@24
|
618 void
|
|
Me@53
|
619 VMS__dissipate_procr( VirtProcr *animatingPr )
|
|
Me@24
|
620 {
|
|
Me@24
|
621 //dis-own all locations owned by this processor, causing to be freed
|
|
Me@24
|
622 // any locations that it is (was) sole owner of
|
|
Me@29
|
623 //TODO: implement VMS__malloc system, including "give up ownership"
|
|
Me@24
|
624
|
|
Me@24
|
625
|
|
Me@24
|
626 //NOTE: initialData was given to the processor, so should either have
|
|
Me@24
|
627 // been alloc'd with VMS__malloc, or freed by the level above animPr.
|
|
Me@24
|
628 //So, all that's left to free here is the stack and the VirtProcr struc
|
|
Me@24
|
629 // itself
|
|
Me@50
|
630 //Note, should not stack-allocate initial data -- no guarantee, in
|
|
Me@50
|
631 // general that creating processor will outlive ones it creates.
|
|
Me@50
|
632 VMS__free( animatingPr->startOfStack );
|
|
Me@50
|
633 VMS__free( animatingPr );
|
|
Me@24
|
634 }
|
|
Me@24
|
635
|
|
Me@24
|
636
|
|
Me@53
|
637 //TODO: look at architecting cleanest separation between request handler
|
|
Me@29
|
638 // and master loop, for dissipate, create, shutdown, and other non-semantic
|
|
Me@29
|
639 // requests. Issue is chain: one removes requests from AppVP, one dispatches
|
|
Me@29
|
640 // on type of request, and one handles each type.. but some types require
|
|
Me@29
|
641 // action from both request handler and master loop -- maybe just give the
|
|
Me@29
|
642 // request handler calls like: VMS__handle_X_request_type
|
|
Me@24
|
643
|
|
Me@29
|
644
|
|
Me@29
|
645 /*This is called by the semantic layer's request handler when it decides its
|
|
Me@29
|
646 * time to shut down the VMS system. Calling this causes the core loop OS
|
|
Me@29
|
647 * threads to exit, which unblocks the entry-point function that started up
|
|
Me@29
|
648 * VMS, and allows it to grab the result and return to the original single-
|
|
Me@29
|
649 * threaded application.
|
|
Me@22
|
650 *
|
|
Me@29
|
651 *The _VMSMasterEnv is needed by this shut down function, so the create-seed-
|
|
Me@29
|
652 * and-wait function has to free a bunch of stuff after it detects the
|
|
Me@29
|
653 * threads have all died: the masterEnv, the thread-related locations,
|
|
Me@29
|
654 * masterVP any AppVPs that might still be allocated and sitting in the
|
|
Me@29
|
655 * semantic environment, or have been orphaned in the _VMSWorkQ.
|
|
Me@29
|
656 *
|
|
Me@53
|
657 *NOTE: the semantic plug-in is expected to use VMS__malloc to get all the
|
|
Me@29
|
658 * locations it needs, and give ownership to masterVP. Then, they will be
|
|
Me@53
|
659 * automatically freed.
|
|
Me@22
|
660 *
|
|
Me@29
|
661 *In here,create one core-loop shut-down processor for each core loop and put
|
|
Me@31
|
662 * them all directly into the readyToAnimateQ.
|
|
Me@29
|
663 *Note, this function can ONLY be called after the semantic environment no
|
|
Me@29
|
664 * longer cares if AppVPs get animated after the point this is called. In
|
|
Me@29
|
665 * other words, this can be used as an abort, or else it should only be
|
|
Me@29
|
666 * called when all AppVPs have finished dissipate requests -- only at that
|
|
Me@29
|
667 * point is it sure that all results have completed.
|
|
Me@22
|
668 */
|
|
Me@22
|
669 void
|
|
Me@53
|
670 VMS__shutdown()
|
|
Me@8
|
671 { int coreIdx;
|
|
Me@14
|
672 VirtProcr *shutDownPr;
|
|
Me@22
|
673
|
|
Me@29
|
674 //create the shutdown processors, one for each core loop -- put them
|
|
Me@31
|
675 // directly into the Q -- each core will die when gets one
|
|
Me@8
|
676 for( coreIdx=0; coreIdx < NUM_CORES; coreIdx++ )
|
|
Me@50
|
677 { //Note, this is running in the master
|
|
Me@29
|
678 shutDownPr = VMS__create_procr( &endOSThreadFn, NULL );
|
|
Me@55
|
679 writeVMSQ( shutDownPr, _VMSMasterEnv->readyToAnimateQs[coreIdx] );
|
|
Me@8
|
680 }
|
|
Me@22
|
681
|
|
Me@12
|
682 }
|
|
Me@12
|
683
|
|
Me@12
|
684
|
|
Me@29
|
685 /*Am trying to be cute, avoiding IF statement in coreLoop that checks for
|
|
Me@29
|
686 * a special shutdown procr. Ended up with extra-complex shutdown sequence.
|
|
Me@29
|
687 *This function has the sole purpose of setting the stack and framePtr
|
|
Me@29
|
688 * to the coreLoop's stack and framePtr.. it does that then jumps to the
|
|
Me@29
|
689 * core loop's shutdown point -- might be able to just call Pthread_exit
|
|
Me@30
|
690 * from here, but am going back to the pthread's stack and setting everything
|
|
Me@29
|
691 * up just as if it never jumped out, before calling pthread_exit.
|
|
Me@29
|
692 *The end-point of core loop will free the stack and so forth of the
|
|
Me@29
|
693 * processor that animates this function, (this fn is transfering the
|
|
Me@29
|
694 * animator of the AppVP that is in turn animating this function over
|
|
Me@29
|
695 * to core loop function -- note that this slices out a level of virtual
|
|
Me@29
|
696 * processors).
|
|
Me@29
|
697 */
|
|
Me@29
|
698 void
|
|
Me@29
|
699 endOSThreadFn( void *initData, VirtProcr *animatingPr )
|
|
msach@71
|
700 {
|
|
msach@75
|
701 #ifdef SEQUENTIAL
|
|
msach@75
|
702 asmTerminateCoreLoopSeq(animatingPr);
|
|
msach@75
|
703 #else
|
|
msach@71
|
704 asmTerminateCoreLoop(animatingPr);
|
|
msach@75
|
705 #endif
|
|
Me@29
|
706 }
|
|
Me@29
|
707
|
|
Me@29
|
708
|
|
Me@53
|
709 /*This is called from the startup & shutdown
|
|
Me@24
|
710 */
|
|
Me@24
|
711 void
|
|
Me@53
|
712 VMS__cleanup_at_end_of_shutdown()
|
|
Me@31
|
713 {
|
|
msach@78
|
714 //unused
|
|
msach@78
|
715 //VMSQueueStruc **readyToAnimateQs;
|
|
msach@78
|
716 //int coreIdx;
|
|
msach@78
|
717 //VirtProcr **masterVPs;
|
|
msach@78
|
718 //SchedSlot ***allSchedSlots; //ptr to array of ptrs
|
|
Me@31
|
719
|
|
Me@65
|
720 //Before getting rid of everything, print out any measurements made
|
|
msach@69
|
721 forAllInDynArrayDo( _VMSMasterEnv->measHistsInfo, (DynArrayFnPtr)&printHist );
|
|
msach@78
|
722 forAllInDynArrayDo( _VMSMasterEnv->measHistsInfo, (DynArrayFnPtr)&saveHistToFile);
|
|
Me@68
|
723 //forAllInDynArrayDo( _VMSMasterEnv->measHistsInfo, &freeHistExt );
|
|
Me@65
|
724 #ifdef MEAS__TIME_PLUGIN
|
|
Me@68
|
725 printHist( _VMSMasterEnv->reqHdlrLowTimeHist );
|
|
msach@79
|
726 saveHistToFile( _VMSMasterEnv->reqHdlrHighTimeHist );
|
|
Me@68
|
727 printHist( _VMSMasterEnv->reqHdlrHighTimeHist );
|
|
msach@79
|
728 saveHistToFile( _VMSMasterEnv->reqHdlrHighTimeHist );
|
|
Me@68
|
729 freeHistExt( _VMSMasterEnv->reqHdlrLowTimeHist );
|
|
Me@68
|
730 freeHistExt( _VMSMasterEnv->reqHdlrHighTimeHist );
|
|
Me@65
|
731 #endif
|
|
Me@65
|
732 #ifdef MEAS__TIME_MALLOC
|
|
Me@65
|
733 printHist( _VMSMasterEnv->mallocTimeHist );
|
|
msach@79
|
734 saveHistToFile( _VMSMasterEnv->mallocTimeHist );
|
|
Me@65
|
735 printHist( _VMSMasterEnv->freeTimeHist );
|
|
msach@79
|
736 saveHistToFile( _VMSMasterEnv->freeTimeHist );
|
|
Me@65
|
737 freeHistExt( _VMSMasterEnv->mallocTimeHist );
|
|
Me@65
|
738 freeHistExt( _VMSMasterEnv->freeTimeHist );
|
|
Me@65
|
739 #endif
|
|
Me@65
|
740 #ifdef MEAS__TIME_MASTER_LOCK
|
|
Me@65
|
741 printHist( _VMSMasterEnv->masterLockLowTimeHist );
|
|
Me@65
|
742 printHist( _VMSMasterEnv->masterLockHighTimeHist );
|
|
Me@65
|
743 #endif
|
|
Me@65
|
744 #ifdef MEAS__TIME_MASTER
|
|
Me@65
|
745 printHist( _VMSMasterEnv->pluginTimeHist );
|
|
Me@65
|
746 for( coreIdx = 0; coreIdx < NUM_CORES; coreIdx++ )
|
|
Me@65
|
747 {
|
|
Me@65
|
748 freeVMSQ( readyToAnimateQs[ coreIdx ] );
|
|
Me@65
|
749 //master VPs were created external to VMS, so use external free
|
|
Me@65
|
750 VMS__dissipate_procr( masterVPs[ coreIdx ] );
|
|
Me@65
|
751
|
|
Me@65
|
752 freeSchedSlots( allSchedSlots[ coreIdx ] );
|
|
Me@65
|
753 }
|
|
Me@65
|
754 #endif
|
|
Me@65
|
755 #ifdef MEAS__TIME_STAMP_SUSP
|
|
Me@65
|
756 printHist( _VMSMasterEnv->pluginTimeHist );
|
|
Me@65
|
757 for( coreIdx = 0; coreIdx < NUM_CORES; coreIdx++ )
|
|
Me@65
|
758 {
|
|
Me@65
|
759 freeVMSQ( readyToAnimateQs[ coreIdx ] );
|
|
Me@65
|
760 //master VPs were created external to VMS, so use external free
|
|
Me@65
|
761 VMS__dissipate_procr( masterVPs[ coreIdx ] );
|
|
Me@65
|
762
|
|
Me@65
|
763 freeSchedSlots( allSchedSlots[ coreIdx ] );
|
|
Me@65
|
764 }
|
|
Me@65
|
765 #endif
|
|
Me@65
|
766
|
|
Me@53
|
767 //All the environment data has been allocated with VMS__malloc, so just
|
|
Me@53
|
768 // free its internal big-chunk and all inside it disappear.
|
|
Me@53
|
769 /*
|
|
Me@31
|
770 readyToAnimateQs = _VMSMasterEnv->readyToAnimateQs;
|
|
Me@31
|
771 masterVPs = _VMSMasterEnv->masterVPs;
|
|
Me@31
|
772 allSchedSlots = _VMSMasterEnv->allSchedSlots;
|
|
Me@31
|
773
|
|
Me@31
|
774 for( coreIdx = 0; coreIdx < NUM_CORES; coreIdx++ )
|
|
Me@24
|
775 {
|
|
Me@55
|
776 freeVMSQ( readyToAnimateQs[ coreIdx ] );
|
|
Me@50
|
777 //master VPs were created external to VMS, so use external free
|
|
Me@53
|
778 VMS__dissipate_procr( masterVPs[ coreIdx ] );
|
|
Me@31
|
779
|
|
Me@31
|
780 freeSchedSlots( allSchedSlots[ coreIdx ] );
|
|
Me@24
|
781 }
|
|
Me@31
|
782
|
|
Me@53
|
783 VMS__free( _VMSMasterEnv->readyToAnimateQs );
|
|
Me@53
|
784 VMS__free( _VMSMasterEnv->masterVPs );
|
|
Me@53
|
785 VMS__free( _VMSMasterEnv->allSchedSlots );
|
|
Me@50
|
786
|
|
Me@50
|
787 //============================= MEASUREMENT STUFF ========================
|
|
Me@50
|
788 #ifdef STATS__TURN_ON_PROBES
|
|
Me@53
|
789 freeDynArrayDeep( _VMSMasterEnv->dynIntervalProbesInfo, &VMS__free_probe);
|
|
Me@50
|
790 #endif
|
|
Me@50
|
791 //========================================================================
|
|
Me@53
|
792 */
|
|
Me@53
|
793 //These are the only two that use system free
|
|
Me@53
|
794 VMS_ext__free_free_list( _VMSMasterEnv->freeListHead );
|
|
Me@53
|
795 free( (void *)_VMSMasterEnv );
|
|
Me@24
|
796 }
|
|
Me@24
|
797
|
|
Me@54
|
798
|
|
Me@54
|
799 //================================
|
|
Me@54
|
800
|
|
Me@54
|
801
|
|
Me@54
|
802 /*Later, improve this -- for now, just exits the application after printing
|
|
Me@54
|
803 * the error message.
|
|
Me@54
|
804 */
|
|
Me@54
|
805 void
|
|
Me@54
|
806 VMS__throw_exception( char *msgStr, VirtProcr *reqstPr, VMSExcp *excpData )
|
|
Me@54
|
807 {
|
|
msach@69
|
808 printf("%s",msgStr);
|
|
Me@54
|
809 fflush(stdin);
|
|
Me@54
|
810 exit(1);
|
|
Me@54
|
811 }
|
|
Me@54
|
812
|
