Mercurial > cgi-bin > hgwebdir.cgi > VMS > VMS_Implementations > DKU_impls > DKU__MC_shared_impl

comparison DKU.c @ 0:9f2a7bd26dd9

find changesets by author, revision, files, or words in the commit message
Initial add -- code is straight copy of VSs implementation.. to be modified
author Sean Halle <seanhalle@yahoo.com>
date Mon, 27 Aug 2012 02:14:35 -0700
parents
children
comparison
equal deleted inserted replaced
-1:000000000000 0:fc15afaf3a59
1 /*
2 * Copyright 2010 OpenSourceCodeStewardshipFoundation
3 *
4 * Licensed under BSD
5 */
6
7 #include <stdio.h>
8 #include <stdlib.h>
9 #include <malloc.h>
10
11 #include "Queue_impl/PrivateQueue.h"
12 #include "Hash_impl/PrivateHash.h"
13
14 #include "VSs.h"
15 #include "Measurement/VSs_Counter_Recording.h"
16
17 //==========================================================================
18
19 void
20 VSs__init();
21
22 void
23 VSs__init_Helper();
24 //==========================================================================
25
26
27
28 //===========================================================================
29
30
31 /*These are the library functions *called in the application*
32 *
33 *There's a pattern for the outside sequential code to interact with the
34 * VMS_HW code.
35 *The VMS_HW system is inside a boundary.. every VSs system is in its
36 * own directory that contains the functions for each of the processor types.
37 * One of the processor types is the "seed" processor that starts the
38 * cascade of creating all the processors that do the work.
39 *So, in the directory is a file called "EntryPoint.c" that contains the
40 * function, named appropriately to the work performed, that the outside
41 * sequential code calls. This function follows a pattern:
42 *1) it calls VSs__init()
43 *2) it creates the initial data for the seed processor, which is passed
44 * in to the function
45 *3) it creates the seed VSs processor, with the data to start it with.
46 *4) it calls startVSsThenWaitUntilWorkDone
47 *5) it gets the returnValue from the transfer struc and returns that
48 * from the function
49 *
50 *For now, a new VSs system has to be created via VSs__init every
51 * time an entry point function is called -- later, might add letting the
52 * VSs system be created once, and let all the entry points just reuse
53 * it -- want to be as simple as possible now, and see by using what makes
54 * sense for later..
55 */
56
57
58
59 //===========================================================================
60
61 /*This is the "border crossing" function -- the thing that crosses from the
62 * outside world, into the VMS_HW world. It initializes and starts up the
63 * VMS system, then creates one processor from the specified function and
64 * puts it into the readyQ. From that point, that one function is resp.
65 * for creating all the other processors, that then create others, and so
66 * forth.
67 *When all the processors, including the seed, have dissipated, then this
68 * function returns. The results will have been written by side-effect via
69 * pointers read from, or written into initData.
70 *
71 *NOTE: no Threads should exist in the outside program that might touch
72 * any of the data reachable from initData passed in to here
73 */
74 void
75 VSs__create_seed_slave_and_do_work( TopLevelFnPtr fnPtr, void *initData )
76 { VSsSemEnv *semEnv;
77 SlaveVP *seedSlv;
78 VSsSemData *semData;
79 VSsTaskStub *threadTaskStub, *parentTaskStub;
80
81 VSs__init(); //normal multi-thd
82
83 semEnv = _VMSMasterEnv->semanticEnv;
84
85 //VSs starts with one processor, which is put into initial environ,
86 // and which then calls create() to create more, thereby expanding work
87 seedSlv = VSs__create_slave_helper( fnPtr, initData,
88 semEnv, semEnv->nextCoreToGetNewSlv++ );
89
90 //seed slave is a thread slave, so make a thread's task stub for it
91 // and then make another to stand for the seed's parent task. Make
92 // the parent be already ended, and have one child (the seed). This
93 // will make the dissipate handler do the right thing when the seed
94 // is dissipated.
95 threadTaskStub = create_thread_task_stub( initData );
96 parentTaskStub = create_thread_task_stub( NULL );
97 parentTaskStub->isEnded = TRUE;
98 parentTaskStub->numLiveChildThreads = 1; //so dissipate works for seed
99 threadTaskStub->parentTaskStub = parentTaskStub;
100
101 semData = (VSsSemData *)seedSlv->semanticData;
102 //seedVP is a thread, so has a permanent task
103 semData->needsTaskAssigned = FALSE;
104 semData->taskStub = threadTaskStub;
105 semData->slaveType = ThreadSlv;
106
107 resume_slaveVP( seedSlv, semEnv ); //returns right away, just queues Slv
108
109 VMS_SS__start_the_work_then_wait_until_done(); //normal multi-thd
110
111 VSs__cleanup_after_shutdown();
112 }
113
114
115 int32
116 VSs__giveMinWorkUnitCycles( float32 percentOverhead )
117 {
118 return MIN_WORK_UNIT_CYCLES;
119 }
120
121 int32
122 VSs__giveIdealNumWorkUnits()
123 {
124 return NUM_ANIM_SLOTS * NUM_CORES;
125 }
126
127 int32
128 VSs__give_number_of_cores_to_schedule_onto()
129 {
130 return NUM_CORES;
131 }
132
133 /*For now, use TSC -- later, make these two macros with assembly that first
134 * saves jump point, and second jumps back several times to get reliable time
135 */
136 void
137 VSs__start_primitive()
138 { saveLowTimeStampCountInto( ((VSsSemEnv *)(_VMSMasterEnv->semanticEnv))->
139 primitiveStartTime );
140 }
141
142 /*Just quick and dirty for now -- make reliable later
143 * will want this to jump back several times -- to be sure cache is warm
144 * because don't want comm time included in calc-time measurement -- and
145 * also to throw out any "weird" values due to OS interrupt or TSC rollover
146 */
147 int32
148 VSs__end_primitive_and_give_cycles()
149 { int32 endTime, startTime;
150 //TODO: fix by repeating time-measurement
151 saveLowTimeStampCountInto( endTime );
152 startTime =((VSsSemEnv*)(_VMSMasterEnv->semanticEnv))->primitiveStartTime;
153 return (endTime - startTime);
154 }
155
156 //===========================================================================
157
158 /*Initializes all the data-structures for a VSs system -- but doesn't
159 * start it running yet!
160 *
161 *This runs in the main thread -- before VMS starts up
162 *
163 *This sets up the semantic layer over the VMS system
164 *
165 *First, calls VMS_Setup, then creates own environment, making it ready
166 * for creating the seed processor and then starting the work.
167 */
168 void
169 VSs__init()
170 {
171 VMS_SS__init();
172 //masterEnv, a global var, now is partially set up by init_VMS
173 // after this, have VMS_int__malloc and VMS_int__free available
174
175 VSs__init_Helper();
176 }
177
178
179 void idle_fn(void* data, SlaveVP *animatingSlv){
180 while(1){
181 VMS_int__suspend_slaveVP_and_send_req(animatingSlv);
182 }
183 }
184
185 void
186 VSs__init_Helper()
187 { VSsSemEnv *semanticEnv;
188 int32 i, coreNum, slotNum;
189 VSsSemData *semData;
190
191 //Hook up the semantic layer's plug-ins to the Master virt procr
192 _VMSMasterEnv->requestHandler = &VSs__Request_Handler;
193 _VMSMasterEnv->slaveAssigner = &VSs__assign_slaveVP_to_slot;
194
195 //create the semantic layer's environment (all its data) and add to
196 // the master environment
197 semanticEnv = VMS_int__malloc( sizeof( VSsSemEnv ) );
198 _VMSMasterEnv->semanticEnv = semanticEnv;
199
200 #ifdef HOLISTIC__TURN_ON_PERF_COUNTERS
201 _VMSMasterEnv->counterHandler = &VSs__counter_handler;
202 VSs__init_counter_data_structs();
203 #endif
204
205 semanticEnv->shutdownInitiated = FALSE;
206 semanticEnv->coreIsDone = VMS_int__malloc( NUM_CORES * sizeof( bool32 ) );
207 //For each animation slot, there is an idle slave, and an initial
208 // slave assigned as the current-task-slave. Create them here.
209 SlaveVP *idleSlv, *slotTaskSlv;
210 for( coreNum = 0; coreNum < NUM_CORES; coreNum++ )
211 { semanticEnv->coreIsDone[coreNum] = FALSE; //use during shutdown
212
213 for( slotNum = 0; slotNum < NUM_ANIM_SLOTS; ++slotNum )
214 { idleSlv = VSs__create_slave_helper( &idle_fn, NULL, semanticEnv, 0);
215 idleSlv->coreAnimatedBy = coreNum;
216 idleSlv->animSlotAssignedTo =
217 _VMSMasterEnv->allAnimSlots[coreNum][slotNum];
218 semanticEnv->idleSlv[coreNum][slotNum] = idleSlv;
219
220 slotTaskSlv = VSs__create_slave_helper( &idle_fn, NULL, semanticEnv, 0);
221 slotTaskSlv->coreAnimatedBy = coreNum;
222 slotTaskSlv->animSlotAssignedTo =
223 _VMSMasterEnv->allAnimSlots[coreNum][slotNum];
224
225 semData = slotTaskSlv->semanticData;
226 semData->needsTaskAssigned = TRUE;
227 semData->slaveType = SlotTaskSlv;
228 semanticEnv->slotTaskSlvs[coreNum][slotNum] = slotTaskSlv;
229 }
230 }
231
232 //create the ready queues, hash tables used for matching and so forth
233 semanticEnv->slavesReadyToResumeQ = makeVMSQ();
234 semanticEnv->freeExtraTaskSlvQ = makeVMSQ();
235 semanticEnv->taskReadyQ = makeVMSQ();
236
237 semanticEnv->argPtrHashTbl = makeHashTable32( 16, &VMS_int__free );
238 semanticEnv->commHashTbl = makeHashTable32( 16, &VMS_int__free );
239
240 semanticEnv->nextCoreToGetNewSlv = 0;
241
242
243 //TODO: bug -- turn these arrays into dyn arrays to eliminate limit
244 //semanticEnv->singletonHasBeenExecutedFlags = makeDynArrayInfo( );
245 //semanticEnv->transactionStrucs = makeDynArrayInfo( );
246 for( i = 0; i < NUM_STRUCS_IN_SEM_ENV; i++ )
247 {
248 semanticEnv->fnSingletons[i].endInstrAddr = NULL;
249 semanticEnv->fnSingletons[i].hasBeenStarted = FALSE;
250 semanticEnv->fnSingletons[i].hasFinished = FALSE;
251 semanticEnv->fnSingletons[i].waitQ = makeVMSQ();
252 semanticEnv->transactionStrucs[i].waitingVPQ = makeVMSQ();
253 }
254
255 semanticEnv->numLiveExtraTaskSlvs = 0; //must be last
256 semanticEnv->numLiveThreadSlvs = 1; //must be last, counts the seed
257
258 #ifdef HOLISTIC__TURN_ON_OBSERVE_UCC
259 semanticEnv->unitList = makeListOfArrays(sizeof(Unit),128);
260 semanticEnv->ctlDependenciesList = makeListOfArrays(sizeof(Dependency),128);
261 semanticEnv->commDependenciesList = makeListOfArrays(sizeof(Dependency),128);
262 semanticEnv->dynDependenciesList = makeListOfArrays(sizeof(Dependency),128);
263 semanticEnv->ntonGroupsInfo = makePrivDynArrayOfSize((void***)&(semanticEnv->ntonGroups),8);
264
265 semanticEnv->hwArcs = makeListOfArrays(sizeof(Dependency),128);
266 memset(semanticEnv->last_in_slot,0,sizeof(NUM_CORES * NUM_ANIM_SLOTS * sizeof(Unit)));
267 #endif
268 }
269
270
271 /*Frees any memory allocated by VSs__init() then calls VMS_int__shutdown
272 */
273 void
274 VSs__cleanup_after_shutdown()
275 { VSsSemEnv *semanticEnv;
276
277 semanticEnv = _VMSMasterEnv->semanticEnv;
278
279 #ifdef HOLISTIC__TURN_ON_OBSERVE_UCC
280 //UCC
281 FILE* output;
282 int n;
283 char filename[255];
284 for(n=0;n<255;n++)
285 {
286 sprintf(filename, "./counters/UCC.%d",n);
287 output = fopen(filename,"r");
288 if(output)
289 {
290 fclose(output);
291 }else{
292 break;
293 }
294 }
295 if(n<255){
296 printf("Saving UCC to File: %s ...\n", filename);
297 output = fopen(filename,"w+");
298 if(output!=NULL){
299 set_dependency_file(output);
300 //fprintf(output,"digraph Dependencies {\n");
301 //set_dot_file(output);
302 //FIXME: first line still depends on counters being enabled, replace w/ unit struct!
303 //forAllInDynArrayDo(_VMSMasterEnv->counter_history_array_info, &print_dot_node_info );
304 forAllInListOfArraysDo(semanticEnv->unitList, &print_unit_to_file);
305 forAllInListOfArraysDo( semanticEnv->commDependenciesList, &print_comm_dependency_to_file );
306 forAllInListOfArraysDo( semanticEnv->ctlDependenciesList, &print_ctl_dependency_to_file );
307 forAllInDynArrayDo(semanticEnv->ntonGroupsInfo,&print_nton_to_file);
308 //fprintf(output,"}\n");
309 fflush(output);
310
311 } else
312 printf("Opening UCC file failed. Please check that folder \"counters\" exists in run directory and has write permission.\n");
313 } else {
314 printf("Could not open UCC file, please clean \"counters\" folder. (Must contain less than 255 files.)\n");
315 }
316 //Loop Graph
317 for(n=0;n<255;n++)
318 {
319 sprintf(filename, "./counters/LoopGraph.%d",n);
320 output = fopen(filename,"r");
321 if(output)
322 {
323 fclose(output);
324 }else{
325 break;
326 }
327 }
328 if(n<255){
329 printf("Saving LoopGraph to File: %s ...\n", filename);
330 output = fopen(filename,"w+");
331 if(output!=NULL){
332 set_dependency_file(output);
333 //fprintf(output,"digraph Dependencies {\n");
334 //set_dot_file(output);
335 //FIXME: first line still depends on counters being enabled, replace w/ unit struct!
336 //forAllInDynArrayDo(_VMSMasterEnv->counter_history_array_info, &print_dot_node_info );
337 forAllInListOfArraysDo( semanticEnv->unitList, &print_unit_to_file );
338 forAllInListOfArraysDo( semanticEnv->commDependenciesList, &print_comm_dependency_to_file );
339 forAllInListOfArraysDo( semanticEnv->ctlDependenciesList, &print_ctl_dependency_to_file );
340 forAllInListOfArraysDo( semanticEnv->dynDependenciesList, &print_dyn_dependency_to_file );
341 forAllInListOfArraysDo( semanticEnv->hwArcs, &print_hw_dependency_to_file );
342 //fprintf(output,"}\n");
343 fflush(output);
344
345 } else
346 printf("Opening LoopGraph file failed. Please check that folder \"counters\" exists in run directory and has write permission.\n");
347 } else {
348 printf("Could not open LoopGraph file, please clean \"counters\" folder. (Must contain less than 255 files.)\n");
349 }
350
351
352 freeListOfArrays(semanticEnv->unitList);
353 freeListOfArrays(semanticEnv->commDependenciesList);
354 freeListOfArrays(semanticEnv->ctlDependenciesList);
355 freeListOfArrays(semanticEnv->dynDependenciesList);
356
357 #endif
358 #ifdef HOLISTIC__TURN_ON_PERF_COUNTERS
359 for(n=0;n<255;n++)
360 {
361 sprintf(filename, "./counters/Counters.%d.csv",n);
362 output = fopen(filename,"r");
363 if(output)
364 {
365 fclose(output);
366 }else{
367 break;
368 }
369 }
370 if(n<255){
371 printf("Saving Counter measurements to File: %s ...\n", filename);
372 output = fopen(filename,"w+");
373 if(output!=NULL){
374 set_counter_file(output);
375 int i;
376 for(i=0;i<NUM_CORES;i++){
377 forAllInListOfArraysDo( semanticEnv->counterList[i], &print_counter_events_to_file );
378 fflush(output);
379 }
380
381 } else
382 printf("Opening UCC file failed. Please check that folder \"counters\" exists in run directory and has write permission.\n");
383 } else {
384 printf("Could not open UCC file, please clean \"counters\" folder. (Must contain less than 255 files.)\n");
385 }
386
387 #endif
388 /* It's all allocated inside VMS's big chunk -- that's about to be freed, so
389 * nothing to do here
390
391
392 for( coreIdx = 0; coreIdx < NUM_CORES; coreIdx++ )
393 {
394 VMS_int__free( semanticEnv->readyVPQs[coreIdx]->startOfData );
395 VMS_int__free( semanticEnv->readyVPQs[coreIdx] );
396 }
397 VMS_int__free( semanticEnv->readyVPQs );
398
399 freeHashTable( semanticEnv->commHashTbl );
400 VMS_int__free( _VMSMasterEnv->semanticEnv );
401 */
402 VMS_SS__cleanup_at_end_of_shutdown();
403 }
404
405
406 //===========================================================================
407
408 SlaveVP *
409 VSs__create_thread( TopLevelFnPtr fnPtr, void *initData,
410 SlaveVP *creatingThd )
411 { VSsSemReq reqData;
412
413 //the semantic request data is on the stack and disappears when this
414 // call returns -- it's guaranteed to remain in the VP's stack for as
415 // long as the VP is suspended.
416 reqData.reqType = 0; //know type because in a VMS create req
417 reqData.fnPtr = fnPtr;
418 reqData.initData = initData;
419 reqData.callingSlv = creatingThd;
420
421 VMS_WL__send_create_slaveVP_req( &reqData, creatingThd );
422
423 return creatingThd->dataRetFromReq;
424 }
425
426 /*This is always the last thing done in the code animated by a thread VP.
427 * Normally, this would be the last line of the thread's top level function.
428 * But, if the thread exits from any point, it has to do so by calling
429 * this.
430 *
431 *It simply sends a dissipate request, which handles all the state cleanup.
432 */
433 void
434 VSs__end_thread( SlaveVP *thdToEnd )
435 { VSsSemData *semData;
436
437 VMS_WL__send_dissipate_req( thdToEnd );
438 }
439
440
441
442 //===========================================================================
443
444
445 //======================= task submit and end ==============================
446 /*
447 */
448 void
449 VSs__submit_task( VSsTaskType *taskType, void *args, SlaveVP *animSlv)
450 { VSsSemReq reqData;
451
452 reqData.reqType = submit_task;
453
454 reqData.taskType = taskType;
455 reqData.args = args;
456 reqData.callingSlv = animSlv;
457
458 reqData.taskID = NULL;
459
460 VMS_WL__send_sem_request( &reqData, animSlv );
461 }
462
463 inline int32 *
464 VSs__create_taskID_of_size( int32 numInts, SlaveVP *animSlv )
465 { int32 *taskID;
466
467 taskID = VMS_WL__malloc( sizeof(int32) + numInts * sizeof(int32) );
468 taskID[0] = numInts;
469 return taskID;
470 }
471
472 void
473 VSs__submit_task_with_ID( VSsTaskType *taskType, void *args, int32 *taskID,
474 SlaveVP *animSlv)
475 { VSsSemReq reqData;
476
477 reqData.reqType = submit_task;
478
479 reqData.taskType = taskType;
480 reqData.args = args;
481 reqData.taskID = taskID;
482 reqData.callingSlv = animSlv;
483
484 VMS_WL__send_sem_request( &reqData, animSlv );
485 }
486
487
488 /*This call is the last to happen in every task. It causes the slave to
489 * suspend and get the next task out of the task-queue. Notice there is no
490 * assigner here.. only one slave, no slave ReadyQ, and so on..
491 *Can either make the assigner take the next task out of the taskQ, or can
492 * leave all as it is, and make task-end take the next task.
493 *Note: this fits the case in the new VMS for no-context tasks, so will use
494 * the built-in taskQ of new VMS, and should be local and much faster.
495 *
496 *The task-stub is saved in the animSlv, so the request handler will get it
497 * from there, along with the task-type which has arg types, and so on..
498 *
499 * NOTE: if want, don't need to send the animating SlaveVP around..
500 * instead, can make a single slave per core, and coreCtrlr looks up the
501 * slave from having the core number.
502 *
503 *But, to stay compatible with all the other VMS languages, leave it in..
504 */
505 void
506 VSs__end_task( SlaveVP *animSlv )
507 { VSsSemReq reqData;
508
509 reqData.reqType = end_task;
510 reqData.callingSlv = animSlv;
511
512 VMS_WL__send_sem_request( &reqData, animSlv );
513 }
514
515
516 void
517 VSs__taskwait(SlaveVP *animSlv)
518 {
519 VSsSemReq reqData;
520
521 reqData.reqType = taskwait;
522 reqData.callingSlv = animSlv;
523
524 VMS_WL__send_sem_request( &reqData, animSlv );
525 }
526
527
528
529 //========================== send and receive ============================
530 //
531
532 inline int32 *
533 VSs__give_self_taskID( SlaveVP *animSlv )
534 {
535 return ((VSsSemData*)animSlv->semanticData)->taskStub->taskID;
536 }
537
538 //================================ send ===================================
539
540 void
541 VSs__send_of_type_to( void *msg, const int32 type, int32 *receiverID,
542 SlaveVP *senderSlv )
543 { VSsSemReq reqData;
544
545 reqData.reqType = send_type_to;
546
547 reqData.msg = msg;
548 reqData.msgType = type;
549 reqData.receiverID = receiverID;
550 reqData.senderSlv = senderSlv;
551
552 reqData.nextReqInHashEntry = NULL;
553
554 VMS_WL__send_sem_request( &reqData, senderSlv );
555
556 //When come back from suspend, no longer own data reachable from msg
557 }
558
559 void
560 VSs__send_from_to( void *msg, int32 *senderID, int32 *receiverID, SlaveVP *senderSlv )
561 { VSsSemReq reqData;
562
563 reqData.reqType = send_from_to;
564
565 reqData.msg = msg;
566 reqData.senderID = senderID;
567 reqData.receiverID = receiverID;
568 reqData.senderSlv = senderSlv;
569
570 reqData.nextReqInHashEntry = NULL;
571
572 VMS_WL__send_sem_request( &reqData, senderSlv );
573 }
574
575
576 //================================ receive ================================
577
578 /*The "type" version of send and receive creates a many-to-one relationship.
579 * The sender is anonymous, and many sends can stack up, waiting to be
580 * received. The same receiver can also have send from-to's
581 * waiting for it, and those will be kept separate from the "type"
582 * messages.
583 */
584 void *
585 VSs__receive_type_to( const int32 type, int32* receiverID, SlaveVP *receiverSlv )
586 { DEBUG__printf1(dbgRqstHdlr,"WL: receive type to %d",receiverID[1] );
587 VSsSemReq reqData;
588
589 reqData.reqType = receive_type_to;
590
591 reqData.msgType = type;
592 reqData.receiverID = receiverID;
593 reqData.receiverSlv = receiverSlv;
594
595 reqData.nextReqInHashEntry = NULL;
596
597 VMS_WL__send_sem_request( &reqData, receiverSlv );
598
599 return receiverSlv->dataRetFromReq;
600 }
601
602
603
604 /*Call this at the point a receiving task wants in-coming data.
605 * Use this from-to form when know senderID -- it makes a direct channel
606 * between sender and receiver.
607 */
608 void *
609 VSs__receive_from_to( int32 *senderID, int32 *receiverID, SlaveVP *receiverSlv )
610 {
611 VSsSemReq reqData;
612
613 reqData.reqType = receive_from_to;
614
615 reqData.senderID = senderID;
616 reqData.receiverID = receiverID;
617 reqData.receiverSlv = receiverSlv;
618
619 reqData.nextReqInHashEntry = NULL;
620 DEBUG__printf2(dbgRqstHdlr,"WL: receive from %d to: %d", reqData.senderID[1], reqData.receiverID[1]);
621
622 VMS_WL__send_sem_request( &reqData, receiverSlv );
623
624 return receiverSlv->dataRetFromReq;
625 }
626
627
628
629
630 //==========================================================================
631 //
632 /*A function singleton is a function whose body executes exactly once, on a
633 * single core, no matter how many times the fuction is called and no
634 * matter how many cores or the timing of cores calling it.
635 *
636 *A data singleton is a ticket attached to data. That ticket can be used
637 * to get the data through the function exactly once, no matter how many
638 * times the data is given to the function, and no matter the timing of
639 * trying to get the data through from different cores.
640 */
641
642 /*asm function declarations*/
643 void asm_save_ret_to_singleton(VSsSingleton *singletonPtrAddr);
644 void asm_write_ret_from_singleton(VSsSingleton *singletonPtrAddr);
645
646 /*Fn singleton uses ID as index into array of singleton structs held in the
647 * semantic environment.
648 */
649 void
650 VSs__start_fn_singleton( int32 singletonID, SlaveVP *animSlv )
651 {
652 VSsSemReq reqData;
653
654 //
655 reqData.reqType = singleton_fn_start;
656 reqData.singletonID = singletonID;
657
658 VMS_WL__send_sem_request( &reqData, animSlv );
659 if( animSlv->dataRetFromReq ) //will be 0 or addr of label in end singleton
660 {
661 VSsSemEnv *semEnv = VMS_int__give_sem_env_for( animSlv );
662 asm_write_ret_from_singleton(&(semEnv->fnSingletons[ singletonID]));
663 }
664 }
665
666 /*Data singleton hands addr of loc holding a pointer to a singleton struct.
667 * The start_data_singleton makes the structure and puts its addr into the
668 * location.
669 */
670 void
671 VSs__start_data_singleton( VSsSingleton **singletonAddr, SlaveVP *animSlv )
672 {
673 VSsSemReq reqData;
674
675 if( *singletonAddr && (*singletonAddr)->hasFinished )
676 goto JmpToEndSingleton;
677
678 reqData.reqType = singleton_data_start;
679 reqData.singletonPtrAddr = singletonAddr;
680
681 VMS_WL__send_sem_request( &reqData, animSlv );
682 if( animSlv->dataRetFromReq ) //either 0 or end singleton's return addr
683 { //Assembly code changes the return addr on the stack to the one
684 // saved into the singleton by the end-singleton-fn
685 //The return addr is at 0x4(%%ebp)
686 JmpToEndSingleton:
687 asm_write_ret_from_singleton(*singletonAddr);
688 }
689 //now, simply return
690 //will exit either from the start singleton call or the end-singleton call
691 }
692
693 /*Uses ID as index into array of flags. If flag already set, resumes from
694 * end-label. Else, sets flag and resumes normally.
695 *
696 *Note, this call cannot be inlined because the instr addr at the label
697 * inside is shared by all invocations of a given singleton ID.
698 */
699 void
700 VSs__end_fn_singleton( int32 singletonID, SlaveVP *animSlv )
701 {
702 VSsSemReq reqData;
703
704 //don't need this addr until after at least one singleton has reached
705 // this function
706 VSsSemEnv *semEnv = VMS_int__give_sem_env_for( animSlv );
707 asm_write_ret_from_singleton(&(semEnv->fnSingletons[ singletonID]));
708
709 reqData.reqType = singleton_fn_end;
710 reqData.singletonID = singletonID;
711
712 VMS_WL__send_sem_request( &reqData, animSlv );
713
714 EndSingletonInstrAddr:
715 return;
716 }
717
718 void
719 VSs__end_data_singleton( VSsSingleton **singletonPtrAddr, SlaveVP *animSlv )
720 {
721 VSsSemReq reqData;
722
723 //don't need this addr until after singleton struct has reached
724 // this function for first time
725 //do assembly that saves the return addr of this fn call into the
726 // data singleton -- that data-singleton can only be given to exactly
727 // one instance in the code of this function. However, can use this
728 // function in different places for different data-singletons.
729 // (*(singletonAddr))->endInstrAddr = &&EndDataSingletonInstrAddr;
730
731
732 asm_save_ret_to_singleton(*singletonPtrAddr);
733
734 reqData.reqType = singleton_data_end;
735 reqData.singletonPtrAddr = singletonPtrAddr;
736
737 VMS_WL__send_sem_request( &reqData, animSlv );
738 }
739
740 /*This executes the function in the masterVP, so it executes in isolation
741 * from any other copies -- only one copy of the function can ever execute
742 * at a time.
743 *
744 *It suspends to the master, and the request handler takes the function
745 * pointer out of the request and calls it, then resumes the VP.
746 *Only very short functions should be called this way -- for longer-running
747 * isolation, use transaction-start and transaction-end, which run the code
748 * between as work-code.
749 */
750 void
751 VSs__animate_short_fn_in_isolation( PtrToAtomicFn ptrToFnToExecInMaster,
752 void *data, SlaveVP *animSlv )
753 {
754 VSsSemReq reqData;
755
756 //
757 reqData.reqType = atomic;
758 reqData.fnToExecInMaster = ptrToFnToExecInMaster;
759 reqData.dataForFn = data;
760
761 VMS_WL__send_sem_request( &reqData, animSlv );
762 }
763
764
765 /*This suspends to the master.
766 *First, it looks at the VP's data, to see the highest transactionID that VP
767 * already has entered. If the current ID is not larger, it throws an
768 * exception stating a bug in the code. Otherwise it puts the current ID
769 * there, and adds the ID to a linked list of IDs entered -- the list is
770 * used to check that exits are properly ordered.
771 *Next it is uses transactionID as index into an array of transaction
772 * structures.
773 *If the "VP_currently_executing" field is non-null, then put requesting VP
774 * into queue in the struct. (At some point a holder will request
775 * end-transaction, which will take this VP from the queue and resume it.)
776 *If NULL, then write requesting into the field and resume.
777 */
778 void
779 VSs__start_transaction( int32 transactionID, SlaveVP *animSlv )
780 {
781 VSsSemReq reqData;
782
783 //
784 reqData.callingSlv = animSlv;
785 reqData.reqType = trans_start;
786 reqData.transID = transactionID;
787
788 VMS_WL__send_sem_request( &reqData, animSlv );
789 }
790
791 /*This suspends to the master, then uses transactionID as index into an
792 * array of transaction structures.
793 *It looks at VP_currently_executing to be sure it's same as requesting VP.
794 * If different, throws an exception, stating there's a bug in the code.
795 *Next it looks at the queue in the structure.
796 *If it's empty, it sets VP_currently_executing field to NULL and resumes.
797 *If something in, gets it, sets VP_currently_executing to that VP, then
798 * resumes both.
799 */
800 void
801 VSs__end_transaction( int32 transactionID, SlaveVP *animSlv )
802 {
803 VSsSemReq reqData;
804
805 //
806 reqData.callingSlv = animSlv;
807 reqData.reqType = trans_end;
808 reqData.transID = transactionID;
809
810 VMS_WL__send_sem_request( &reqData, animSlv );
811 }
812
813 //======================== Internal ==================================
814 /*
815 */
816 SlaveVP *
817 VSs__create_slave_with( TopLevelFnPtr fnPtr, void *initData,
818 SlaveVP *creatingSlv )
819 { VSsSemReq reqData;
820
821 //the semantic request data is on the stack and disappears when this
822 // call returns -- it's guaranteed to remain in the VP's stack for as
823 // long as the VP is suspended.
824 reqData.reqType = 0; //know type because in a VMS create req
825 reqData.coreToAssignOnto = -1; //means round-robin assign
826 reqData.fnPtr = fnPtr;
827 reqData.initData = initData;
828 reqData.callingSlv = creatingSlv;
829
830 VMS_WL__send_create_slaveVP_req( &reqData, creatingSlv );
831
832 return creatingSlv->dataRetFromReq;
833 }
834
835 SlaveVP *
836 VSs__create_slave_with_affinity( TopLevelFnPtr fnPtr, void *initData,
837 SlaveVP *creatingSlv, int32 coreToAssignOnto )
838 { VSsSemReq reqData;
839
840 //the semantic request data is on the stack and disappears when this
841 // call returns -- it's guaranteed to remain in the VP's stack for as
842 // long as the VP is suspended.
843 reqData.reqType = create_slave_w_aff; //not used, May 2012
844 reqData.coreToAssignOnto = coreToAssignOnto;
845 reqData.fnPtr = fnPtr;
846 reqData.initData = initData;
847 reqData.callingSlv = creatingSlv;
848
849 VMS_WL__send_create_slaveVP_req( &reqData, creatingSlv );
850
851 return creatingSlv->dataRetFromReq;
852 }
853