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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 "SwitchAnimators.h"
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16 #include "Queue_impl/BlockingQueue.h"
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17 #include "Histogram/Histogram.h"
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18
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19
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20 #define thdAttrs NULL
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21
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22 //===========================================================================
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23 void
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24 shutdownFn( void *dummy, VirtProcr *dummy2 );
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25
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26 SchedSlot **
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27 create_sched_slots();
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28
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29 void
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30 create_masterEnv();
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31
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32 void
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33 create_the_coreLoop_OS_threads();
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34
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35 MallocProlog *
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36 create_free_list();
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37
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38 void
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39 endOSThreadFn( void *initData, VirtProcr *animatingPr );
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40
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41 pthread_mutex_t suspendLock = PTHREAD_MUTEX_INITIALIZER;
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42 pthread_cond_t suspend_cond = PTHREAD_COND_INITIALIZER;
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43
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44 //===========================================================================
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45
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46 /*Setup has two phases:
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47 * 1) Semantic layer first calls init_VMS, which creates masterEnv, and puts
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48 * the master virt procr into the work-queue, ready for first "call"
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49 * 2) Semantic layer then does its own init, which creates the seed virt
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50 * procr inside the semantic layer, ready to schedule it when
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51 * asked by the first run of the masterLoop.
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52 *
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53 *This part is bit weird because VMS really wants to be "always there", and
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54 * have applications attach and detach.. for now, this VMS is part of
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55 * the app, so the VMS system starts up as part of running the app.
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56 *
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57 *The semantic layer is isolated from the VMS internals by making the
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58 * semantic layer do setup to a state that it's ready with its
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59 * initial virt procrs, ready to schedule them to slots when the masterLoop
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60 * asks. Without this pattern, the semantic layer's setup would
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61 * have to modify slots directly to assign the initial virt-procrs, and put
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62 * them into the readyToAnimateQ itself, breaking the isolation completely.
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63 *
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64 *
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65 *The semantic layer creates the initial virt procr(s), and adds its
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66 * own environment to masterEnv, and fills in the pointers to
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67 * the requestHandler and slaveScheduler plug-in functions
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68 */
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69
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70 /*This allocates VMS data structures, populates the master VMSProc,
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71 * and master environment, and returns the master environment to the semantic
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72 * layer.
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73 */
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74 void
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75 VMS__init()
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76 {
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77 create_masterEnv();
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78 create_the_coreLoop_OS_threads();
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79 }
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80
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81 #ifdef SEQUENTIAL
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82
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83 /*To initialize the sequential version, just don't create the threads
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84 */
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85 void
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86 VMS__init_Seq()
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87 {
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88 create_masterEnv();
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89 }
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90
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91 #endif
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92
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93 void
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94 create_masterEnv()
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95 { MasterEnv *masterEnv;
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96 VMSQueueStruc **readyToAnimateQs;
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97 int coreIdx;
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98 VirtProcr **masterVPs;
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99 SchedSlot ***allSchedSlots; //ptr to array of ptrs
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100
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101
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102 //Make the master env, which holds everything else
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103 _VMSMasterEnv = malloc( sizeof(MasterEnv) );
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104
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105 //Very first thing put into the master env is the free-list, seeded
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106 // with a massive initial chunk of memory.
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107 //After this, all other mallocs are VMS__malloc.
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108 _VMSMasterEnv->freeListHead = VMS_ext__create_free_list();
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109
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110
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111 //============================= MEASUREMENT STUFF ========================
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112 #ifdef MEAS__TIME_MALLOC
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113 _VMSMasterEnv->mallocTimeHist = makeFixedBinHistExt( 50, 0, 100,
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114 "malloc time hist");
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115 _VMSMasterEnv->freeTimeHist = makeFixedBinHistExt( 50, 0, 100,
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116 "free time hist");
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117 #endif
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118 #ifdef MEAS__TIME_PLUGIN
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119 _VMSMasterEnv->reqHdlrLowTimeHist = makeFixedBinHistExt( 50, 0, 10,
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120 "plugin low time hist");
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121 _VMSMasterEnv->reqHdlrHighTimeHist = makeFixedBinHistExt( 50, 0, 100,
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122 "plugin high time hist");
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123 #endif
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124 //========================================================================
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125
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126 //===================== Only VMS__malloc after this ====================
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127 masterEnv = (MasterEnv*)_VMSMasterEnv;
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128
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129 //Make a readyToAnimateQ for each core loop
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130 readyToAnimateQs = VMS__malloc( NUM_CORES * sizeof(VMSQueueStruc *) );
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131 masterVPs = VMS__malloc( NUM_CORES * sizeof(VirtProcr *) );
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132
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133 //One array for each core, 3 in array, core's masterVP scheds all
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134 allSchedSlots = VMS__malloc( NUM_CORES * sizeof(SchedSlot *) );
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135
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136 _VMSMasterEnv->numProcrsCreated = 0; //used by create procr
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137 for( coreIdx = 0; coreIdx < NUM_CORES; coreIdx++ )
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138 {
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139 readyToAnimateQs[ coreIdx ] = makeVMSQ();
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140
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141 //Q: should give masterVP core-specific info as its init data?
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142 masterVPs[ coreIdx ] = VMS__create_procr( (VirtProcrFnPtr)&masterLoop, (void*)masterEnv );
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143 masterVPs[ coreIdx ]->coreAnimatedBy = coreIdx;
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144 allSchedSlots[ coreIdx ] = create_sched_slots(); //makes for one core
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145 _VMSMasterEnv->numMasterInARow[ coreIdx ] = 0;
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146 _VMSMasterEnv->workStealingGates[ coreIdx ] = NULL;
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147 }
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148 _VMSMasterEnv->readyToAnimateQs = readyToAnimateQs;
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149 _VMSMasterEnv->masterVPs = masterVPs;
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150 _VMSMasterEnv->masterLock = UNLOCKED;
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151 _VMSMasterEnv->allSchedSlots = allSchedSlots;
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152 _VMSMasterEnv->workStealingLock = UNLOCKED;
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153
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154
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155 //Aug 19, 2010: no longer need to place initial masterVP into queue
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156 // because coreLoop now controls -- animates its masterVP when no work
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157
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158
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159 //============================= MEASUREMENT STUFF ========================
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160 #ifdef STATS__TURN_ON_PROBES
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161 _VMSMasterEnv->dynIntervalProbesInfo =
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162 makePrivDynArrayOfSize( (void***)&(_VMSMasterEnv->intervalProbes), 200);
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163
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164 _VMSMasterEnv->probeNameHashTbl = makeHashTable( 1000, &VMS__free );
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165
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166 //put creation time directly into master env, for fast retrieval
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167 struct timeval timeStamp;
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168 gettimeofday( &(timeStamp), NULL);
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169 _VMSMasterEnv->createPtInSecs =
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170 timeStamp.tv_sec +(timeStamp.tv_usec/1000000.0);
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171 #endif
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172 #ifdef MEAS__TIME_MASTER_LOCK
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173 _VMSMasterEnv->masterLockLowTimeHist = makeFixedBinHist( 50, 0, 2,
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174 "master lock low time hist");
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175 _VMSMasterEnv->masterLockHighTimeHist = makeFixedBinHist( 50, 0, 100,
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176 "master lock high time hist");
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177 #endif
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178
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179 MakeTheMeasHists();
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180 //========================================================================
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181
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182 }
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183
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184 SchedSlot **
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185 create_sched_slots()
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186 { SchedSlot **schedSlots;
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187 int i;
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188
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189 schedSlots = VMS__malloc( NUM_SCHED_SLOTS * sizeof(SchedSlot *) );
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190
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191 for( i = 0; i < NUM_SCHED_SLOTS; i++ )
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192 {
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193 schedSlots[i] = VMS__malloc( sizeof(SchedSlot) );
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194
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195 //Set state to mean "handling requests done, slot needs filling"
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196 schedSlots[i]->workIsDone = FALSE;
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197 schedSlots[i]->needsProcrAssigned = TRUE;
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198 }
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199 return schedSlots;
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200 }
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201
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202
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203 void
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204 freeSchedSlots( SchedSlot **schedSlots )
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205 { int i;
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206 for( i = 0; i < NUM_SCHED_SLOTS; i++ )
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207 {
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208 VMS__free( schedSlots[i] );
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209 }
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210 VMS__free( schedSlots );
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211 }
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212
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213
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214 void
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215 create_the_coreLoop_OS_threads()
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216 {
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217 //========================================================================
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218 // Create the Threads
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219 int coreIdx, retCode;
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220
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221 //Need the threads to be created suspended, and wait for a signal
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222 // before proceeding -- gives time after creating to initialize other
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223 // stuff before the coreLoops set off.
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224 _VMSMasterEnv->setupComplete = 0;
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225
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226 //Make the threads that animate the core loops
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227 for( coreIdx=0; coreIdx < NUM_CORES; coreIdx++ )
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228 { coreLoopThdParams[coreIdx] = VMS__malloc( sizeof(ThdParams) );
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229 coreLoopThdParams[coreIdx]->coreNum = coreIdx;
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230
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231 retCode =
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232 pthread_create( &(coreLoopThdHandles[coreIdx]),
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233 thdAttrs,
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234 &coreLoop,
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235 (void *)(coreLoopThdParams[coreIdx]) );
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236 if(retCode){printf("ERROR creating thread: %d\n", retCode); exit(1);}
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237 }
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238 }
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239
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240 /*Semantic layer calls this when it want the system to start running..
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241 *
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242 *This starts the core loops running then waits for them to exit.
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243 */
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244 void
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245 VMS__start_the_work_then_wait_until_done()
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246 { int coreIdx;
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247 //Start the core loops running
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248
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249 //tell the core loop threads that setup is complete
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250 //get lock, to lock out any threads still starting up -- they'll see
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251 // that setupComplete is true before entering while loop, and so never
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252 // wait on the condition
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253 pthread_mutex_lock( &suspendLock );
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254 _VMSMasterEnv->setupComplete = 1;
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255 pthread_mutex_unlock( &suspendLock );
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256 pthread_cond_broadcast( &suspend_cond );
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257
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258
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259 //wait for all to complete
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260 for( coreIdx=0; coreIdx < NUM_CORES; coreIdx++ )
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261 {
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262 pthread_join( coreLoopThdHandles[coreIdx], NULL );
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263 }
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264
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265 //NOTE: do not clean up VMS env here -- semantic layer has to have
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266 // a chance to clean up its environment first, then do a call to free
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267 // the Master env and rest of VMS locations
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268 }
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269
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270 #ifdef SEQUENTIAL
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271 /*Only difference between version with an OS thread pinned to each core and
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272 * the sequential version of VMS is VMS__init_Seq, this, and coreLoop_Seq.
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273 */
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274 void
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275 VMS__start_the_work_then_wait_until_done_Seq()
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276 {
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277 //Instead of un-suspending threads, just call the one and only
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278 // core loop (sequential version), in the main thread.
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279 coreLoop_Seq( NULL );
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280 flushRegisters();
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281
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282 }
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283 #endif
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284
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285 /*Create stack, then create __cdecl structure on it and put initialData and
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286 * pointer to the new structure instance into the parameter positions on
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287 * the stack
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288 *Then put function pointer into nextInstrPt -- the stack is setup in std
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289 * call structure, so jumping to function ptr is same as a GCC generated
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290 * function call
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291 *No need to save registers on old stack frame, because there's no old
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292 * animator state to return to --
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293 *
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294 */
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295 inline VirtProcr *
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296 create_procr_helper( VirtProcr *newPr, VirtProcrFnPtr fnPtr,
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297 void *initialData, void *stackLocs )
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298 {
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299 void *stackPtr;
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300
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301 newPr->startOfStack = stackLocs;
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302 newPr->procrID = _VMSMasterEnv->numProcrsCreated++;
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303 newPr->initialData = initialData;
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304 newPr->requests = NULL;
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305 newPr->schedSlot = NULL;
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306
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307 /*
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308 * Hardware dependent part
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309 */
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310 //instead of calling the function directly, call a wrapper function to fetch
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311 //arguments from stack
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312 newPr->nextInstrPt = (VirtProcrFnPtr)&startVirtProcrFn;
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313
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314 //fnPtr takes two params -- void *initData & void *animProcr
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315 //alloc stack locations, make stackPtr be the highest addr minus room
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316 // for 2 params + return addr. Return addr (NULL) is in loc pointed to
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317 // by stackPtr, initData at stackPtr + 8 bytes, animatingPr just above
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318 stackPtr = ( (void *)stackLocs + VIRT_PROCR_STACK_SIZE - 4*sizeof(void*));
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319
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320 //setup __cdecl on stack -- coreloop will switch to stackPtr before jmp
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321 *((VirtProcr**)stackPtr + 2 ) = newPr; //rightmost param
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322 *((void**)stackPtr + 1 ) = initialData; //next param to left
|
|
msach@76
|
323 *((void**)stackPtr) = (void*)fnPtr;
|
|
msach@76
|
324
|
|
msach@76
|
325 /*
|
|
msach@76
|
326 * end of Hardware dependent part
|
|
msach@76
|
327 */
|
|
msach@76
|
328
|
|
Me@8
|
329 newPr->stackPtr = stackPtr; //core loop will switch to this, then
|
|
Me@8
|
330 newPr->framePtr = stackPtr; //suspend loop will save new stack & frame ptr
|
|
Me@8
|
331
|
|
Me@50
|
332 //============================= MEASUREMENT STUFF ========================
|
|
Me@50
|
333 #ifdef STATS__TURN_ON_PROBES
|
|
Me@50
|
334 struct timeval timeStamp;
|
|
Me@50
|
335 gettimeofday( &(timeStamp), NULL);
|
|
Me@54
|
336 newPr->createPtInSecs = timeStamp.tv_sec +(timeStamp.tv_usec/1000000.0) -
|
|
Me@54
|
337 _VMSMasterEnv->createPtInSecs;
|
|
Me@50
|
338 #endif
|
|
Me@50
|
339 //========================================================================
|
|
Me@50
|
340
|
|
Me@8
|
341 return newPr;
|
|
Me@8
|
342 }
|
|
Me@8
|
343
|
|
Me@50
|
344 inline VirtProcr *
|
|
Me@50
|
345 VMS__create_procr( VirtProcrFnPtr fnPtr, void *initialData )
|
|
Me@50
|
346 { VirtProcr *newPr;
|
|
msach@76
|
347 void *stackLocs;
|
|
Me@50
|
348
|
|
Me@50
|
349 newPr = VMS__malloc( sizeof(VirtProcr) );
|
|
Me@50
|
350 stackLocs = VMS__malloc( VIRT_PROCR_STACK_SIZE );
|
|
Me@50
|
351 if( stackLocs == 0 )
|
|
Me@50
|
352 { perror("VMS__malloc stack"); exit(1); }
|
|
Me@50
|
353
|
|
Me@50
|
354 return create_procr_helper( newPr, fnPtr, initialData, stackLocs );
|
|
Me@50
|
355 }
|
|
Me@50
|
356
|
|
Me@50
|
357 /* "ext" designates that it's for use outside the VMS system -- should only
|
|
Me@50
|
358 * be called from main thread or other thread -- never from code animated by
|
|
Me@50
|
359 * a VMS virtual processor.
|
|
Me@50
|
360 */
|
|
Me@50
|
361 inline VirtProcr *
|
|
Me@50
|
362 VMS_ext__create_procr( VirtProcrFnPtr fnPtr, void *initialData )
|
|
Me@50
|
363 { VirtProcr *newPr;
|
|
Me@50
|
364 char *stackLocs;
|
|
Me@50
|
365
|
|
Me@50
|
366 newPr = malloc( sizeof(VirtProcr) );
|
|
Me@50
|
367 stackLocs = malloc( VIRT_PROCR_STACK_SIZE );
|
|
Me@50
|
368 if( stackLocs == 0 )
|
|
Me@50
|
369 { perror("malloc stack"); exit(1); }
|
|
Me@50
|
370
|
|
Me@50
|
371 return create_procr_helper( newPr, fnPtr, initialData, stackLocs );
|
|
Me@50
|
372 }
|
|
Me@50
|
373
|
|
Me@8
|
374
|
|
Me@64
|
375 /*Anticipating multi-tasking
|
|
Me@64
|
376 */
|
|
Me@64
|
377 void *
|
|
Me@64
|
378 VMS__give_sem_env_for( VirtProcr *animPr )
|
|
Me@64
|
379 {
|
|
Me@64
|
380 return _VMSMasterEnv->semanticEnv;
|
|
Me@64
|
381 }
|
|
Me@64
|
382 //===========================================================================
|
|
Me@26
|
383 /*there is a label inside this function -- save the addr of this label in
|
|
Me@0
|
384 * the callingPr struc, as the pick-up point from which to start the next
|
|
Me@0
|
385 * work-unit for that procr. If turns out have to save registers, then
|
|
Me@0
|
386 * save them in the procr struc too. Then do assembly jump to the CoreLoop's
|
|
Me@0
|
387 * "done with work-unit" label. The procr struc is in the request in the
|
|
Me@0
|
388 * slave that animated the just-ended work-unit, so all the state is saved
|
|
Me@0
|
389 * there, and will get passed along, inside the request handler, to the
|
|
Me@0
|
390 * next work-unit for that procr.
|
|
Me@0
|
391 */
|
|
Me@8
|
392 void
|
|
Me@38
|
393 VMS__suspend_procr( VirtProcr *animatingPr )
|
|
Me@55
|
394 {
|
|
Me@0
|
395
|
|
Me@14
|
396 //The request to master will cause this suspended virt procr to get
|
|
Me@14
|
397 // scheduled again at some future point -- to resume, core loop jumps
|
|
Me@14
|
398 // to the resume point (below), which causes restore of saved regs and
|
|
Me@14
|
399 // "return" from this call.
|
|
msach@71
|
400 //animatingPr->nextInstrPt = &&ResumePt;
|
|
Me@1
|
401
|
|
Me@1
|
402 //return ownership of the virt procr and sched slot to Master virt pr
|
|
Me@38
|
403 animatingPr->schedSlot->workIsDone = TRUE;
|
|
Me@1
|
404
|
|
Me@41
|
405 //=========================== Measurement stuff ========================
|
|
Me@38
|
406 #ifdef MEAS__TIME_STAMP_SUSP
|
|
Me@41
|
407 //record time stamp: compare to time-stamp recorded below
|
|
Me@38
|
408 saveLowTimeStampCountInto( animatingPr->preSuspTSCLow );
|
|
Me@38
|
409 #endif
|
|
Me@41
|
410 //=======================================================================
|
|
Me@38
|
411
|
|
msach@71
|
412 switchToCoreLoop(animatingPr);
|
|
msach@71
|
413 flushRegisters();
|
|
Me@55
|
414
|
|
Me@55
|
415 //=======================================================================
|
|
msach@71
|
416
|
|
Me@38
|
417 #ifdef MEAS__TIME_STAMP_SUSP
|
|
Me@41
|
418 //NOTE: only take low part of count -- do sanity check when take diff
|
|
Me@38
|
419 saveLowTimeStampCountInto( animatingPr->postSuspTSCLow );
|
|
Me@38
|
420 #endif
|
|
Me@38
|
421
|
|
Me@0
|
422 return;
|
|
Me@0
|
423 }
|
|
Me@0
|
424
|
|
Me@22
|
425
|
|
Me@22
|
426
|
|
Me@50
|
427 /*For this implementation of VMS, it may not make much sense to have the
|
|
Me@50
|
428 * system of requests for creating a new processor done this way.. but over
|
|
Me@50
|
429 * the scope of single-master, multi-master, mult-tasking, OS-implementing,
|
|
Me@50
|
430 * distributed-memory, and so on, this gives VMS implementation a chance to
|
|
Me@50
|
431 * do stuff before suspend, in the AppVP, and in the Master before the plugin
|
|
Me@50
|
432 * is called, as well as in the lang-lib before this is called, and in the
|
|
Me@50
|
433 * plugin. So, this gives both VMS and language implementations a chance to
|
|
Me@50
|
434 * intercept at various points and do order-dependent stuff.
|
|
Me@50
|
435 *Having a standard VMSNewPrReqData struc allows the language to create and
|
|
Me@50
|
436 * free the struc, while VMS knows how to get the newPr if it wants it, and
|
|
Me@50
|
437 * it lets the lang have lang-specific data related to creation transported
|
|
Me@50
|
438 * to the plugin.
|
|
Me@50
|
439 */
|
|
Me@50
|
440 void
|
|
Me@50
|
441 VMS__send_create_procr_req( void *semReqData, VirtProcr *reqstingPr )
|
|
Me@50
|
442 { VMSReqst req;
|
|
Me@50
|
443
|
|
Me@50
|
444 req.reqType = createReq;
|
|
Me@50
|
445 req.semReqData = semReqData;
|
|
Me@50
|
446 req.nextReqst = reqstingPr->requests;
|
|
Me@50
|
447 reqstingPr->requests = &req;
|
|
Me@50
|
448
|
|
Me@50
|
449 VMS__suspend_procr( reqstingPr );
|
|
Me@50
|
450 }
|
|
Me@50
|
451
|
|
Me@22
|
452
|
|
Me@38
|
453 /*
|
|
Me@22
|
454 *This adds a request to dissipate, then suspends the processor so that the
|
|
Me@22
|
455 * request handler will receive the request. The request handler is what
|
|
Me@22
|
456 * does the work of freeing memory and removing the processor from the
|
|
Me@22
|
457 * semantic environment's data structures.
|
|
Me@22
|
458 *The request handler also is what figures out when to shutdown the VMS
|
|
Me@22
|
459 * system -- which causes all the core loop threads to die, and returns from
|
|
Me@22
|
460 * the call that started up VMS to perform the work.
|
|
Me@22
|
461 *
|
|
Me@22
|
462 *This form is a bit misleading to understand if one is trying to figure out
|
|
Me@22
|
463 * how VMS works -- it looks like a normal function call, but inside it
|
|
Me@22
|
464 * sends a request to the request handler and suspends the processor, which
|
|
Me@22
|
465 * jumps out of the VMS__dissipate_procr function, and out of all nestings
|
|
Me@22
|
466 * above it, transferring the work of dissipating to the request handler,
|
|
Me@22
|
467 * which then does the actual work -- causing the processor that animated
|
|
Me@22
|
468 * the call of this function to disappear and the "hanging" state of this
|
|
Me@22
|
469 * function to just poof into thin air -- the virtual processor's trace
|
|
Me@22
|
470 * never returns from this call, but instead the virtual processor's trace
|
|
Me@22
|
471 * gets suspended in this call and all the virt processor's state disap-
|
|
Me@22
|
472 * pears -- making that suspend the last thing in the virt procr's trace.
|
|
Me@8
|
473 */
|
|
Me@8
|
474 void
|
|
Me@53
|
475 VMS__send_dissipate_req( VirtProcr *procrToDissipate )
|
|
Me@50
|
476 { VMSReqst req;
|
|
Me@22
|
477
|
|
Me@50
|
478 req.reqType = dissipate;
|
|
Me@50
|
479 req.nextReqst = procrToDissipate->requests;
|
|
Me@50
|
480 procrToDissipate->requests = &req;
|
|
Me@50
|
481
|
|
Me@22
|
482 VMS__suspend_procr( procrToDissipate );
|
|
Me@50
|
483 }
|
|
Me@50
|
484
|
|
Me@50
|
485
|
|
Me@50
|
486 /* "ext" designates that it's for use outside the VMS system -- should only
|
|
Me@50
|
487 * be called from main thread or other thread -- never from code animated by
|
|
Me@50
|
488 * a VMS virtual processor.
|
|
Me@50
|
489 *
|
|
Me@50
|
490 *Use this version to dissipate VPs created outside the VMS system.
|
|
Me@50
|
491 */
|
|
Me@50
|
492 void
|
|
Me@50
|
493 VMS_ext__dissipate_procr( VirtProcr *procrToDissipate )
|
|
Me@50
|
494 {
|
|
Me@50
|
495 //NOTE: initialData was given to the processor, so should either have
|
|
Me@50
|
496 // been alloc'd with VMS__malloc, or freed by the level above animPr.
|
|
Me@50
|
497 //So, all that's left to free here is the stack and the VirtProcr struc
|
|
Me@50
|
498 // itself
|
|
Me@50
|
499 //Note, should not stack-allocate initial data -- no guarantee, in
|
|
Me@50
|
500 // general that creating processor will outlive ones it creates.
|
|
Me@50
|
501 free( procrToDissipate->startOfStack );
|
|
Me@50
|
502 free( procrToDissipate );
|
|
Me@50
|
503 }
|
|
Me@50
|
504
|
|
Me@22
|
505
|
|
Me@22
|
506
|
|
Me@53
|
507 /*This call's name indicates that request is malloc'd -- so req handler
|
|
Me@53
|
508 * has to free any extra requests tacked on before a send, using this.
|
|
Me@53
|
509 *
|
|
Me@53
|
510 * This inserts the semantic-layer's request data into standard VMS carrier
|
|
Me@53
|
511 * request data-struct that is mallocd. The sem request doesn't need to
|
|
Me@53
|
512 * be malloc'd if this is called inside the same call chain before the
|
|
Me@53
|
513 * send of the last request is called.
|
|
Me@53
|
514 *
|
|
Me@53
|
515 *The request handler has to call VMS__free_VMSReq for any of these
|
|
Me@22
|
516 */
|
|
Me@22
|
517 inline void
|
|
Me@53
|
518 VMS__add_sem_request_in_mallocd_VMSReqst( void *semReqData,
|
|
Me@53
|
519 VirtProcr *callingPr )
|
|
Me@53
|
520 { VMSReqst *req;
|
|
Me@22
|
521
|
|
Me@53
|
522 req = VMS__malloc( sizeof(VMSReqst) );
|
|
Me@53
|
523 req->reqType = semantic;
|
|
Me@53
|
524 req->semReqData = semReqData;
|
|
Me@53
|
525 req->nextReqst = callingPr->requests;
|
|
Me@53
|
526 callingPr->requests = req;
|
|
Me@22
|
527 }
|
|
Me@22
|
528
|
|
Me@50
|
529 /*This inserts the semantic-layer's request data into standard VMS carrier
|
|
Me@50
|
530 * request data-struct is allocated on stack of this call & ptr to it sent
|
|
Me@50
|
531 * to plugin
|
|
Me@50
|
532 *Then it does suspend, to cause request to be sent.
|
|
Me@50
|
533 */
|
|
Me@50
|
534 inline void
|
|
Me@50
|
535 VMS__send_sem_request( void *semReqData, VirtProcr *callingPr )
|
|
Me@50
|
536 { VMSReqst req;
|
|
Me@22
|
537
|
|
Me@50
|
538 req.reqType = semantic;
|
|
Me@50
|
539 req.semReqData = semReqData;
|
|
Me@50
|
540 req.nextReqst = callingPr->requests;
|
|
Me@50
|
541 callingPr->requests = &req;
|
|
Me@50
|
542
|
|
Me@50
|
543 VMS__suspend_procr( callingPr );
|
|
Me@50
|
544 }
|
|
Me@50
|
545
|
|
Me@50
|
546
|
|
Me@50
|
547 inline void
|
|
Me@50
|
548 VMS__send_VMSSem_request( void *semReqData, VirtProcr *callingPr )
|
|
Me@50
|
549 { VMSReqst req;
|
|
Me@50
|
550
|
|
Me@50
|
551 req.reqType = VMSSemantic;
|
|
Me@50
|
552 req.semReqData = semReqData;
|
|
Me@50
|
553 req.nextReqst = callingPr->requests; //gab any other preceeding
|
|
Me@50
|
554 callingPr->requests = &req;
|
|
Me@50
|
555
|
|
Me@50
|
556 VMS__suspend_procr( callingPr );
|
|
Me@50
|
557 }
|
|
Me@50
|
558
|
|
Me@50
|
559
|
|
Me@50
|
560 /*
|
|
Me@38
|
561 */
|
|
Me@24
|
562 VMSReqst *
|
|
Me@50
|
563 VMS__take_next_request_out_of( VirtProcr *procrWithReq )
|
|
Me@31
|
564 { VMSReqst *req;
|
|
Me@31
|
565
|
|
Me@31
|
566 req = procrWithReq->requests;
|
|
Me@38
|
567 if( req == NULL ) return NULL;
|
|
Me@31
|
568
|
|
Me@31
|
569 procrWithReq->requests = procrWithReq->requests->nextReqst;
|
|
Me@50
|
570 return req;
|
|
Me@24
|
571 }
|
|
Me@22
|
572
|
|
Me@24
|
573
|
|
Me@24
|
574 inline void *
|
|
Me@24
|
575 VMS__take_sem_reqst_from( VMSReqst *req )
|
|
Me@24
|
576 {
|
|
Me@24
|
577 return req->semReqData;
|
|
Me@24
|
578 }
|
|
Me@24
|
579
|
|
Me@24
|
580
|
|
Me@24
|
581
|
|
Me@50
|
582 /* This is for OS requests and VMS infrastructure requests, such as to create
|
|
Me@50
|
583 * a probe -- a probe is inside the heart of VMS-core, it's not part of any
|
|
Me@50
|
584 * language -- but it's also a semantic thing that's triggered from and used
|
|
Me@50
|
585 * in the application.. so it crosses abstractions.. so, need some special
|
|
Me@50
|
586 * pattern here for handling such requests.
|
|
Me@52
|
587 * Doing this just like it were a second language sharing VMS-core.
|
|
Me@52
|
588 *
|
|
Me@50
|
589 * This is called from the language's request handler when it sees a request
|
|
Me@50
|
590 * of type VMSSemReq
|
|
Me@52
|
591 *
|
|
Me@52
|
592 * TODO: Later change this, to give probes their own separate plugin & have
|
|
Me@52
|
593 * VMS-core steer the request to appropriate plugin
|
|
Me@52
|
594 * Do the same for OS calls -- look later at it..
|
|
Me@50
|
595 */
|
|
Me@50
|
596 void inline
|
|
Me@50
|
597 VMS__handle_VMSSemReq( VMSReqst *req, VirtProcr *requestingPr, void *semEnv,
|
|
Me@50
|
598 ResumePrFnPtr resumePrFnPtr )
|
|
Me@50
|
599 { VMSSemReq *semReq;
|
|
Me@50
|
600 IntervalProbe *newProbe;
|
|
Me@24
|
601
|
|
Me@50
|
602 semReq = req->semReqData;
|
|
Me@24
|
603
|
|
Me@50
|
604 newProbe = VMS__malloc( sizeof(IntervalProbe) );
|
|
Me@65
|
605 newProbe->nameStr = VMS__strDup( semReq->nameStr );
|
|
Me@50
|
606 newProbe->hist = NULL;
|
|
Me@50
|
607 newProbe->schedChoiceWasRecorded = FALSE;
|
|
Me@53
|
608
|
|
Me@53
|
609 //This runs in masterVP, so no race-condition worries
|
|
Me@50
|
610 newProbe->probeID =
|
|
Me@50
|
611 addToDynArray( newProbe, _VMSMasterEnv->dynIntervalProbesInfo );
|
|
Me@50
|
612
|
|
Me@53
|
613 requestingPr->dataRetFromReq = newProbe;
|
|
Me@50
|
614
|
|
Me@50
|
615 (*resumePrFnPtr)( requestingPr, semEnv );
|
|
Me@22
|
616 }
|
|
Me@22
|
617
|
|
Me@22
|
618
|
|
Me@22
|
619
|
|
Me@24
|
620 /*This must be called by the request handler plugin -- it cannot be called
|
|
Me@24
|
621 * from the semantic library "dissipate processor" function -- instead, the
|
|
Me@50
|
622 * semantic layer has to generate a request, and the plug-in calls this
|
|
Me@24
|
623 * function.
|
|
Me@24
|
624 *The reason is that this frees the virtual processor's stack -- which is
|
|
Me@24
|
625 * still in use inside semantic library calls!
|
|
Me@24
|
626 *
|
|
Me@24
|
627 *This frees or recycles all the state owned by and comprising the VMS
|
|
Me@24
|
628 * portion of the animating virtual procr. The request handler must first
|
|
Me@24
|
629 * free any semantic data created for the processor that didn't use the
|
|
Me@24
|
630 * VMS_malloc mechanism. Then it calls this, which first asks the malloc
|
|
Me@24
|
631 * system to disown any state that did use VMS_malloc, and then frees the
|
|
Me@24
|
632 * statck and the processor-struct itself.
|
|
Me@24
|
633 *If the dissipated processor is the sole (remaining) owner of VMS__malloc'd
|
|
Me@24
|
634 * state, then that state gets freed (or sent to recycling) as a side-effect
|
|
Me@24
|
635 * of dis-owning it.
|
|
Me@24
|
636 */
|
|
Me@24
|
637 void
|
|
Me@53
|
638 VMS__dissipate_procr( VirtProcr *animatingPr )
|
|
Me@24
|
639 {
|
|
Me@24
|
640 //dis-own all locations owned by this processor, causing to be freed
|
|
Me@24
|
641 // any locations that it is (was) sole owner of
|
|
Me@29
|
642 //TODO: implement VMS__malloc system, including "give up ownership"
|
|
Me@24
|
643
|
|
Me@24
|
644
|
|
Me@24
|
645 //NOTE: initialData was given to the processor, so should either have
|
|
Me@24
|
646 // been alloc'd with VMS__malloc, or freed by the level above animPr.
|
|
Me@24
|
647 //So, all that's left to free here is the stack and the VirtProcr struc
|
|
Me@24
|
648 // itself
|
|
Me@50
|
649 //Note, should not stack-allocate initial data -- no guarantee, in
|
|
Me@50
|
650 // general that creating processor will outlive ones it creates.
|
|
Me@50
|
651 VMS__free( animatingPr->startOfStack );
|
|
Me@50
|
652 VMS__free( animatingPr );
|
|
Me@24
|
653 }
|
|
Me@24
|
654
|
|
Me@24
|
655
|
|
Me@53
|
656 //TODO: look at architecting cleanest separation between request handler
|
|
Me@29
|
657 // and master loop, for dissipate, create, shutdown, and other non-semantic
|
|
Me@29
|
658 // requests. Issue is chain: one removes requests from AppVP, one dispatches
|
|
Me@29
|
659 // on type of request, and one handles each type.. but some types require
|
|
Me@29
|
660 // action from both request handler and master loop -- maybe just give the
|
|
Me@29
|
661 // request handler calls like: VMS__handle_X_request_type
|
|
Me@24
|
662
|
|
Me@29
|
663
|
|
Me@29
|
664 /*This is called by the semantic layer's request handler when it decides its
|
|
Me@29
|
665 * time to shut down the VMS system. Calling this causes the core loop OS
|
|
Me@29
|
666 * threads to exit, which unblocks the entry-point function that started up
|
|
Me@29
|
667 * VMS, and allows it to grab the result and return to the original single-
|
|
Me@29
|
668 * threaded application.
|
|
Me@22
|
669 *
|
|
Me@29
|
670 *The _VMSMasterEnv is needed by this shut down function, so the create-seed-
|
|
Me@29
|
671 * and-wait function has to free a bunch of stuff after it detects the
|
|
Me@29
|
672 * threads have all died: the masterEnv, the thread-related locations,
|
|
Me@29
|
673 * masterVP any AppVPs that might still be allocated and sitting in the
|
|
Me@29
|
674 * semantic environment, or have been orphaned in the _VMSWorkQ.
|
|
Me@29
|
675 *
|
|
Me@53
|
676 *NOTE: the semantic plug-in is expected to use VMS__malloc to get all the
|
|
Me@29
|
677 * locations it needs, and give ownership to masterVP. Then, they will be
|
|
Me@53
|
678 * automatically freed.
|
|
Me@22
|
679 *
|
|
Me@29
|
680 *In here,create one core-loop shut-down processor for each core loop and put
|
|
Me@31
|
681 * them all directly into the readyToAnimateQ.
|
|
Me@29
|
682 *Note, this function can ONLY be called after the semantic environment no
|
|
Me@29
|
683 * longer cares if AppVPs get animated after the point this is called. In
|
|
Me@29
|
684 * other words, this can be used as an abort, or else it should only be
|
|
Me@29
|
685 * called when all AppVPs have finished dissipate requests -- only at that
|
|
Me@29
|
686 * point is it sure that all results have completed.
|
|
Me@22
|
687 */
|
|
Me@22
|
688 void
|
|
Me@53
|
689 VMS__shutdown()
|
|
Me@8
|
690 { int coreIdx;
|
|
Me@14
|
691 VirtProcr *shutDownPr;
|
|
Me@22
|
692
|
|
Me@29
|
693 //create the shutdown processors, one for each core loop -- put them
|
|
Me@31
|
694 // directly into the Q -- each core will die when gets one
|
|
Me@8
|
695 for( coreIdx=0; coreIdx < NUM_CORES; coreIdx++ )
|
|
Me@50
|
696 { //Note, this is running in the master
|
|
Me@29
|
697 shutDownPr = VMS__create_procr( &endOSThreadFn, NULL );
|
|
Me@55
|
698 writeVMSQ( shutDownPr, _VMSMasterEnv->readyToAnimateQs[coreIdx] );
|
|
Me@8
|
699 }
|
|
Me@22
|
700
|
|
Me@12
|
701 }
|
|
Me@12
|
702
|
|
Me@12
|
703
|
|
Me@29
|
704 /*Am trying to be cute, avoiding IF statement in coreLoop that checks for
|
|
Me@29
|
705 * a special shutdown procr. Ended up with extra-complex shutdown sequence.
|
|
Me@29
|
706 *This function has the sole purpose of setting the stack and framePtr
|
|
Me@29
|
707 * to the coreLoop's stack and framePtr.. it does that then jumps to the
|
|
Me@29
|
708 * core loop's shutdown point -- might be able to just call Pthread_exit
|
|
Me@30
|
709 * from here, but am going back to the pthread's stack and setting everything
|
|
Me@29
|
710 * up just as if it never jumped out, before calling pthread_exit.
|
|
Me@29
|
711 *The end-point of core loop will free the stack and so forth of the
|
|
Me@29
|
712 * processor that animates this function, (this fn is transfering the
|
|
Me@29
|
713 * animator of the AppVP that is in turn animating this function over
|
|
Me@29
|
714 * to core loop function -- note that this slices out a level of virtual
|
|
Me@29
|
715 * processors).
|
|
Me@29
|
716 */
|
|
Me@29
|
717 void
|
|
Me@29
|
718 endOSThreadFn( void *initData, VirtProcr *animatingPr )
|
|
msach@71
|
719 {
|
|
msach@75
|
720 #ifdef SEQUENTIAL
|
|
msach@75
|
721 asmTerminateCoreLoopSeq(animatingPr);
|
|
msach@75
|
722 #else
|
|
msach@71
|
723 asmTerminateCoreLoop(animatingPr);
|
|
msach@75
|
724 #endif
|
|
Me@29
|
725 }
|
|
Me@29
|
726
|
|
Me@29
|
727
|
|
Me@53
|
728 /*This is called from the startup & shutdown
|
|
Me@24
|
729 */
|
|
Me@24
|
730 void
|
|
Me@53
|
731 VMS__cleanup_at_end_of_shutdown()
|
|
Me@31
|
732 {
|
|
Me@55
|
733 VMSQueueStruc **readyToAnimateQs;
|
|
Me@31
|
734 int coreIdx;
|
|
Me@31
|
735 VirtProcr **masterVPs;
|
|
Me@31
|
736 SchedSlot ***allSchedSlots; //ptr to array of ptrs
|
|
Me@31
|
737
|
|
Me@65
|
738 //Before getting rid of everything, print out any measurements made
|
|
msach@69
|
739 forAllInDynArrayDo( _VMSMasterEnv->measHistsInfo, (DynArrayFnPtr)&printHist );
|
|
Me@68
|
740 //forAllInDynArrayDo( _VMSMasterEnv->measHistsInfo, &freeHistExt );
|
|
Me@65
|
741 #ifdef MEAS__TIME_PLUGIN
|
|
Me@68
|
742 printHist( _VMSMasterEnv->reqHdlrLowTimeHist );
|
|
Me@68
|
743 printHist( _VMSMasterEnv->reqHdlrHighTimeHist );
|
|
Me@68
|
744 freeHistExt( _VMSMasterEnv->reqHdlrLowTimeHist );
|
|
Me@68
|
745 freeHistExt( _VMSMasterEnv->reqHdlrHighTimeHist );
|
|
Me@65
|
746 #endif
|
|
Me@65
|
747 #ifdef MEAS__TIME_MALLOC
|
|
Me@65
|
748 printHist( _VMSMasterEnv->mallocTimeHist );
|
|
Me@65
|
749 printHist( _VMSMasterEnv->freeTimeHist );
|
|
Me@65
|
750 freeHistExt( _VMSMasterEnv->mallocTimeHist );
|
|
Me@65
|
751 freeHistExt( _VMSMasterEnv->freeTimeHist );
|
|
Me@65
|
752 #endif
|
|
Me@65
|
753 #ifdef MEAS__TIME_MASTER_LOCK
|
|
Me@65
|
754 printHist( _VMSMasterEnv->masterLockLowTimeHist );
|
|
Me@65
|
755 printHist( _VMSMasterEnv->masterLockHighTimeHist );
|
|
Me@65
|
756 #endif
|
|
Me@65
|
757 #ifdef MEAS__TIME_MASTER
|
|
Me@65
|
758 printHist( _VMSMasterEnv->pluginTimeHist );
|
|
Me@65
|
759 for( coreIdx = 0; coreIdx < NUM_CORES; coreIdx++ )
|
|
Me@65
|
760 {
|
|
Me@65
|
761 freeVMSQ( readyToAnimateQs[ coreIdx ] );
|
|
Me@65
|
762 //master VPs were created external to VMS, so use external free
|
|
Me@65
|
763 VMS__dissipate_procr( masterVPs[ coreIdx ] );
|
|
Me@65
|
764
|
|
Me@65
|
765 freeSchedSlots( allSchedSlots[ coreIdx ] );
|
|
Me@65
|
766 }
|
|
Me@65
|
767 #endif
|
|
Me@65
|
768 #ifdef MEAS__TIME_STAMP_SUSP
|
|
Me@65
|
769 printHist( _VMSMasterEnv->pluginTimeHist );
|
|
Me@65
|
770 for( coreIdx = 0; coreIdx < NUM_CORES; coreIdx++ )
|
|
Me@65
|
771 {
|
|
Me@65
|
772 freeVMSQ( readyToAnimateQs[ coreIdx ] );
|
|
Me@65
|
773 //master VPs were created external to VMS, so use external free
|
|
Me@65
|
774 VMS__dissipate_procr( masterVPs[ coreIdx ] );
|
|
Me@65
|
775
|
|
Me@65
|
776 freeSchedSlots( allSchedSlots[ coreIdx ] );
|
|
Me@65
|
777 }
|
|
Me@65
|
778 #endif
|
|
Me@65
|
779
|
|
Me@53
|
780 //All the environment data has been allocated with VMS__malloc, so just
|
|
Me@53
|
781 // free its internal big-chunk and all inside it disappear.
|
|
Me@53
|
782 /*
|
|
Me@31
|
783 readyToAnimateQs = _VMSMasterEnv->readyToAnimateQs;
|
|
Me@31
|
784 masterVPs = _VMSMasterEnv->masterVPs;
|
|
Me@31
|
785 allSchedSlots = _VMSMasterEnv->allSchedSlots;
|
|
Me@31
|
786
|
|
Me@31
|
787 for( coreIdx = 0; coreIdx < NUM_CORES; coreIdx++ )
|
|
Me@24
|
788 {
|
|
Me@55
|
789 freeVMSQ( readyToAnimateQs[ coreIdx ] );
|
|
Me@50
|
790 //master VPs were created external to VMS, so use external free
|
|
Me@53
|
791 VMS__dissipate_procr( masterVPs[ coreIdx ] );
|
|
Me@31
|
792
|
|
Me@31
|
793 freeSchedSlots( allSchedSlots[ coreIdx ] );
|
|
Me@24
|
794 }
|
|
Me@31
|
795
|
|
Me@53
|
796 VMS__free( _VMSMasterEnv->readyToAnimateQs );
|
|
Me@53
|
797 VMS__free( _VMSMasterEnv->masterVPs );
|
|
Me@53
|
798 VMS__free( _VMSMasterEnv->allSchedSlots );
|
|
Me@50
|
799
|
|
Me@50
|
800 //============================= MEASUREMENT STUFF ========================
|
|
Me@50
|
801 #ifdef STATS__TURN_ON_PROBES
|
|
Me@53
|
802 freeDynArrayDeep( _VMSMasterEnv->dynIntervalProbesInfo, &VMS__free_probe);
|
|
Me@50
|
803 #endif
|
|
Me@50
|
804 //========================================================================
|
|
Me@53
|
805 */
|
|
Me@53
|
806 //These are the only two that use system free
|
|
Me@53
|
807 VMS_ext__free_free_list( _VMSMasterEnv->freeListHead );
|
|
Me@53
|
808 free( (void *)_VMSMasterEnv );
|
|
Me@24
|
809 }
|
|
Me@24
|
810
|
|
Me@54
|
811
|
|
Me@54
|
812 //================================
|
|
Me@54
|
813
|
|
Me@54
|
814
|
|
Me@54
|
815 /*Later, improve this -- for now, just exits the application after printing
|
|
Me@54
|
816 * the error message.
|
|
Me@54
|
817 */
|
|
Me@54
|
818 void
|
|
Me@54
|
819 VMS__throw_exception( char *msgStr, VirtProcr *reqstPr, VMSExcp *excpData )
|
|
Me@54
|
820 {
|
|
msach@69
|
821 printf("%s",msgStr);
|
|
Me@54
|
822 fflush(stdin);
|
|
Me@54
|
823 exit(1);
|
|
Me@54
|
824 }
|
|
Me@54
|
825
|
