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