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view VMS.c @ 141:79bb48d7d93b
changed free back to request to master and bugfixes
| author | Merten Sach <msach@mailbox.tu-berlin.de> |
|---|---|
| date | Wed, 21 Sep 2011 11:51:29 +0200 |
| parents | 2c8f3cf6c058 |
| children | e7cd1945c9b6 |
line source
1 /*
2 * Copyright 2010 OpenSourceStewardshipFoundation
3 *
4 * Licensed under BSD
5 */
7 #include <stdio.h>
8 #include <stdlib.h>
9 #include <string.h>
10 #include <malloc.h>
11 #include <inttypes.h>
12 #include <sys/time.h>
14 #include "VMS.h"
15 #include "ProcrContext.h"
16 #include "scheduling.h"
17 #include "Queue_impl/BlockingQueue.h"
18 #include "Histogram/Histogram.h"
21 #define thdAttrs NULL
23 //===========================================================================
24 void
25 shutdownFn( void *dummy, VirtProcr *dummy2 );
27 SchedSlot **
28 create_sched_slots();
30 void
31 create_masterEnv();
33 void
34 create_the_coreLoop_OS_threads();
36 MallocProlog *
37 create_free_list();
39 void
40 endOSThreadFn( void *initData, VirtProcr *animatingPr );
42 pthread_mutex_t suspendLock = PTHREAD_MUTEX_INITIALIZER;
43 pthread_cond_t suspend_cond = PTHREAD_COND_INITIALIZER;
45 //===========================================================================
47 /*Setup has two phases:
48 * 1) Semantic layer first calls init_VMS, which creates masterEnv, and puts
49 * the master virt procr into the work-queue, ready for first "call"
50 * 2) Semantic layer then does its own init, which creates the seed virt
51 * procr inside the semantic layer, ready to schedule it when
52 * asked by the first run of the masterLoop.
53 *
54 *This part is bit weird because VMS really wants to be "always there", and
55 * have applications attach and detach.. for now, this VMS is part of
56 * the app, so the VMS system starts up as part of running the app.
57 *
58 *The semantic layer is isolated from the VMS internals by making the
59 * semantic layer do setup to a state that it's ready with its
60 * initial virt procrs, ready to schedule them to slots when the masterLoop
61 * asks. Without this pattern, the semantic layer's setup would
62 * have to modify slots directly to assign the initial virt-procrs, and put
63 * them into the readyToAnimateQ itself, breaking the isolation completely.
64 *
65 *
66 *The semantic layer creates the initial virt procr(s), and adds its
67 * own environment to masterEnv, and fills in the pointers to
68 * the requestHandler and slaveScheduler plug-in functions
69 */
71 /*This allocates VMS data structures, populates the master VMSProc,
72 * and master environment, and returns the master environment to the semantic
73 * layer.
74 */
75 void
76 VMS__init()
77 {
78 create_masterEnv();
79 create_the_coreLoop_OS_threads();
80 }
82 #ifdef SEQUENTIAL
84 /*To initialize the sequential version, just don't create the threads
85 */
86 void
87 VMS__init_Seq()
88 {
89 create_masterEnv();
90 }
92 #endif
94 void
95 create_masterEnv()
96 { MasterEnv *masterEnv;
97 VMSQueueStruc **readyToAnimateQs;
98 int coreIdx;
99 VirtProcr **masterVPs;
100 SchedSlot ***allSchedSlots; //ptr to array of ptrs
103 //Make the master env, which holds everything else
104 _VMSMasterEnv = malloc( sizeof(MasterEnv) );
106 //Very first thing put into the master env is the free-list, seeded
107 // with a massive initial chunk of memory.
108 //After this, all other mallocs are VMS__malloc.
109 int i;
110 for(i=0; i<NUM_CORES; i++)
111 {
112 _VMSMasterEnv->freeLists[i] = VMS_ext__create_free_list();
113 _VMSMasterEnv->interMasterRequestsFor[i] = NULL;
114 _VMSMasterEnv->interMasterRequestsSentBy[i] = NULL;
115 }
116 _VMSMasterEnv->currentMasterProcrID = 0;
117 _VMSMasterEnv->amtOfOutstandingMem = NUM_CORES*MALLOC_ADDITIONAL_MEM_FROM_OS_SIZE;
119 //============================= MEASUREMENT STUFF ========================
120 #ifdef MEAS__TIME_MALLOC
121 _VMSMasterEnv->mallocTimeHist = makeFixedBinHistExt( 100, 0, 100,
122 "malloc_time_hist");
123 _VMSMasterEnv->freeTimeHist = makeFixedBinHistExt( 80, 0, 100,
124 "free_time_hist");
125 #endif
126 #ifdef MEAS__TIME_PLUGIN
127 _VMSMasterEnv->reqHdlrLowTimeHist = makeFixedBinHistExt( 1000, 0, 100,
128 "plugin_low_time_hist");
129 _VMSMasterEnv->reqHdlrHighTimeHist = makeFixedBinHistExt( 1000, 0, 100,
130 "plugin_high_time_hist");
131 #endif
132 //========================================================================
134 //===================== Only VMS__malloc after this ====================
135 masterEnv = (MasterEnv*)_VMSMasterEnv;
137 //Make a readyToAnimateQ for each core loop
138 readyToAnimateQs = VMS__malloc( NUM_CORES * sizeof(VMSQueueStruc *) );
139 masterVPs = VMS__malloc( NUM_CORES * sizeof(VirtProcr *) );
141 //One array for each core, 3 in array, core's masterVP scheds all
142 allSchedSlots = VMS__malloc( NUM_CORES * sizeof(SchedSlot *) );
144 _VMSMasterEnv->numProcrsCreated = 0; //used by create procr
145 for( coreIdx = 0; coreIdx < NUM_CORES; coreIdx++ )
146 {
147 readyToAnimateQs[ coreIdx ] = makeVMSQ();
149 //Q: should give masterVP core-specific info as its init data?
150 masterVPs[ coreIdx ] = VMS__create_procr( (VirtProcrFnPtr)&masterLoop, (void*)masterEnv );
151 masterVPs[ coreIdx ]->coreAnimatedBy = coreIdx;
152 allSchedSlots[ coreIdx ] = create_sched_slots(); //makes for one core
153 _VMSMasterEnv->numMasterInARow[ coreIdx ] = 0;
154 _VMSMasterEnv->workStealingGates[ coreIdx ] = NULL;
155 }
156 _VMSMasterEnv->readyToAnimateQs = readyToAnimateQs;
157 _VMSMasterEnv->masterVPs = masterVPs;
158 _VMSMasterEnv->masterLock = UNLOCKED;
159 _VMSMasterEnv->allSchedSlots = allSchedSlots;
160 _VMSMasterEnv->workStealingLock = UNLOCKED;
163 //Aug 19, 2010: no longer need to place initial masterVP into queue
164 // because coreLoop now controls -- animates its masterVP when no work
167 //============================= MEASUREMENT STUFF ========================
168 #ifdef STATS__TURN_ON_PROBES
169 _VMSMasterEnv->dynIntervalProbesInfo =
170 makePrivDynArrayOfSize( (void***)&(_VMSMasterEnv->intervalProbes), 200);
172 _VMSMasterEnv->probeNameHashTbl = makeHashTable( 1000, &VMS__free );
174 //put creation time directly into master env, for fast retrieval
175 struct timeval timeStamp;
176 gettimeofday( &(timeStamp), NULL);
177 _VMSMasterEnv->createPtInSecs =
178 timeStamp.tv_sec +(timeStamp.tv_usec/1000000.0);
179 #endif
180 #ifdef MEAS__TIME_MASTER_LOCK
181 _VMSMasterEnv->masterLockLowTimeHist = makeFixedBinHist( 50, 0, 2,
182 "master lock low time hist");
183 _VMSMasterEnv->masterLockHighTimeHist = makeFixedBinHist( 50, 0, 100,
184 "master lock high time hist");
185 #endif
187 MakeTheMeasHists();
188 //========================================================================
190 }
192 SchedSlot **
193 create_sched_slots()
194 { SchedSlot **schedSlots;
195 int i;
197 schedSlots = VMS__malloc( NUM_SCHED_SLOTS * sizeof(SchedSlot *) );
199 for( i = 0; i < NUM_SCHED_SLOTS; i++ )
200 {
201 schedSlots[i] = VMS__malloc( sizeof(SchedSlot) );
203 //Set state to mean "handling requests done, slot needs filling"
204 schedSlots[i]->workIsDone = FALSE;
205 schedSlots[i]->needsProcrAssigned = TRUE;
206 }
207 return schedSlots;
208 }
211 void
212 freeSchedSlots( SchedSlot **schedSlots )
213 { int i;
214 for( i = 0; i < NUM_SCHED_SLOTS; i++ )
215 {
216 VMS__free( schedSlots[i] );
217 }
218 VMS__free( schedSlots );
219 }
222 void
223 create_the_coreLoop_OS_threads()
224 {
225 //========================================================================
226 // Create the Threads
227 int coreIdx, retCode;
229 //Need the threads to be created suspended, and wait for a signal
230 // before proceeding -- gives time after creating to initialize other
231 // stuff before the coreLoops set off.
232 _VMSMasterEnv->setupComplete = 0;
234 //Make the threads that animate the core loops
235 for( coreIdx=0; coreIdx < NUM_CORES; coreIdx++ )
236 { coreLoopThdParams[coreIdx] = VMS__malloc( sizeof(ThdParams) );
237 coreLoopThdParams[coreIdx]->coreNum = coreIdx;
239 retCode =
240 pthread_create( &(coreLoopThdHandles[coreIdx]),
241 thdAttrs,
242 &coreLoop,
243 (void *)(coreLoopThdParams[coreIdx]) );
244 if(retCode){printf("ERROR creating thread: %d\n", retCode); exit(1);}
245 }
246 }
248 /*Semantic layer calls this when it want the system to start running..
249 *
250 *This starts the core loops running then waits for them to exit.
251 */
252 void
253 VMS__start_the_work_then_wait_until_done()
254 { int coreIdx;
255 //Start the core loops running
257 //tell the core loop threads that setup is complete
258 //get lock, to lock out any threads still starting up -- they'll see
259 // that setupComplete is true before entering while loop, and so never
260 // wait on the condition
261 pthread_mutex_lock( &suspendLock );
262 _VMSMasterEnv->setupComplete = 1;
263 pthread_mutex_unlock( &suspendLock );
264 pthread_cond_broadcast( &suspend_cond );
267 //wait for all to complete
268 for( coreIdx=0; coreIdx < NUM_CORES; coreIdx++ )
269 {
270 pthread_join( coreLoopThdHandles[coreIdx], NULL );
271 }
273 //NOTE: do not clean up VMS env here -- semantic layer has to have
274 // a chance to clean up its environment first, then do a call to free
275 // the Master env and rest of VMS locations
276 }
278 #ifdef SEQUENTIAL
279 /*Only difference between version with an OS thread pinned to each core and
280 * the sequential version of VMS is VMS__init_Seq, this, and coreLoop_Seq.
281 */
282 void
283 VMS__start_the_work_then_wait_until_done_Seq()
284 {
285 //Instead of un-suspending threads, just call the one and only
286 // core loop (sequential version), in the main thread.
287 coreLoop_Seq( NULL );
288 flushRegisters();
290 }
291 #endif
293 inline VirtProcr *
294 VMS__create_procr( VirtProcrFnPtr fnPtr, void *initialData )
295 { VirtProcr *newPr;
296 void *stackLocs;
298 newPr = VMS__malloc( sizeof(VirtProcr) );
299 stackLocs = VMS__malloc( VIRT_PROCR_STACK_SIZE );
300 if( stackLocs == 0 )
301 { perror("VMS__malloc stack"); exit(1); }
303 return create_procr_helper( newPr, fnPtr, initialData, stackLocs );
304 }
306 /* "ext" designates that it's for use outside the VMS system -- should only
307 * be called from main thread or other thread -- never from code animated by
308 * a VMS virtual processor.
309 */
310 inline VirtProcr *
311 VMS_ext__create_procr( VirtProcrFnPtr fnPtr, void *initialData )
312 { VirtProcr *newPr;
313 char *stackLocs;
315 newPr = malloc( sizeof(VirtProcr) );
316 stackLocs = malloc( VIRT_PROCR_STACK_SIZE );
317 if( stackLocs == 0 )
318 { perror("malloc stack"); exit(1); }
320 return create_procr_helper( newPr, fnPtr, initialData, stackLocs );
321 }
324 /*Anticipating multi-tasking
325 */
326 void *
327 VMS__give_sem_env_for( VirtProcr *animPr )
328 {
329 return _VMSMasterEnv->semanticEnv;
330 }
331 //===========================================================================
332 /*there is a label inside this function -- save the addr of this label in
333 * the callingPr struc, as the pick-up point from which to start the next
334 * work-unit for that procr. If turns out have to save registers, then
335 * save them in the procr struc too. Then do assembly jump to the CoreLoop's
336 * "done with work-unit" label. The procr struc is in the request in the
337 * slave that animated the just-ended work-unit, so all the state is saved
338 * there, and will get passed along, inside the request handler, to the
339 * next work-unit for that procr.
340 */
341 void
342 VMS__suspend_procr( VirtProcr *animatingPr )
343 {
345 //The request to master will cause this suspended virt procr to get
346 // scheduled again at some future point -- to resume, core loop jumps
347 // to the resume point (below), which causes restore of saved regs and
348 // "return" from this call.
349 //animatingPr->nextInstrPt = &&ResumePt;
351 //return ownership of the virt procr and sched slot to Master virt pr
352 animatingPr->schedSlot->workIsDone = TRUE;
354 //=========================== Measurement stuff ========================
355 #ifdef MEAS__TIME_STAMP_SUSP
356 //record time stamp: compare to time-stamp recorded below
357 saveLowTimeStampCountInto( animatingPr->preSuspTSCLow );
358 #endif
359 //=======================================================================
361 switchToCoreLoop(animatingPr);
362 flushRegisters();
364 //=======================================================================
366 #ifdef MEAS__TIME_STAMP_SUSP
367 //NOTE: only take low part of count -- do sanity check when take diff
368 saveLowTimeStampCountInto( animatingPr->postSuspTSCLow );
369 #endif
371 return;
372 }
376 /*For this implementation of VMS, it may not make much sense to have the
377 * system of requests for creating a new processor done this way.. but over
378 * the scope of single-master, multi-master, mult-tasking, OS-implementing,
379 * distributed-memory, and so on, this gives VMS implementation a chance to
380 * do stuff before suspend, in the AppVP, and in the Master before the plugin
381 * is called, as well as in the lang-lib before this is called, and in the
382 * plugin. So, this gives both VMS and language implementations a chance to
383 * intercept at various points and do order-dependent stuff.
384 *Having a standard VMSNewPrReqData struc allows the language to create and
385 * free the struc, while VMS knows how to get the newPr if it wants it, and
386 * it lets the lang have lang-specific data related to creation transported
387 * to the plugin.
388 */
389 void
390 VMS__send_create_procr_req( void *semReqData, VirtProcr *reqstingPr )
391 { VMSReqst req;
393 req.reqType = createReq;
394 req.semReqData = semReqData;
395 req.nextReqst = reqstingPr->requests;
396 reqstingPr->requests = &req;
398 VMS__suspend_procr( reqstingPr );
399 }
402 /*
403 *This adds a request to dissipate, then suspends the processor so that the
404 * request handler will receive the request. The request handler is what
405 * does the work of freeing memory and removing the processor from the
406 * semantic environment's data structures.
407 *The request handler also is what figures out when to shutdown the VMS
408 * system -- which causes all the core loop threads to die, and returns from
409 * the call that started up VMS to perform the work.
410 *
411 *This form is a bit misleading to understand if one is trying to figure out
412 * how VMS works -- it looks like a normal function call, but inside it
413 * sends a request to the request handler and suspends the processor, which
414 * jumps out of the VMS__dissipate_procr function, and out of all nestings
415 * above it, transferring the work of dissipating to the request handler,
416 * which then does the actual work -- causing the processor that animated
417 * the call of this function to disappear and the "hanging" state of this
418 * function to just poof into thin air -- the virtual processor's trace
419 * never returns from this call, but instead the virtual processor's trace
420 * gets suspended in this call and all the virt processor's state disap-
421 * pears -- making that suspend the last thing in the virt procr's trace.
422 */
423 void
424 VMS__send_dissipate_req( VirtProcr *procrToDissipate )
425 { VMSReqst req;
427 req.reqType = dissipate;
428 req.nextReqst = procrToDissipate->requests;
429 procrToDissipate->requests = &req;
431 VMS__suspend_procr( procrToDissipate );
432 }
435 /* "ext" designates that it's for use outside the VMS system -- should only
436 * be called from main thread or other thread -- never from code animated by
437 * a VMS virtual processor.
438 *
439 *Use this version to dissipate VPs created outside the VMS system.
440 */
441 void
442 VMS_ext__dissipate_procr( VirtProcr *procrToDissipate )
443 {
444 //NOTE: initialData was given to the processor, so should either have
445 // been alloc'd with VMS__malloc, or freed by the level above animPr.
446 //So, all that's left to free here is the stack and the VirtProcr struc
447 // itself
448 //Note, should not stack-allocate initial data -- no guarantee, in
449 // general that creating processor will outlive ones it creates.
450 free( procrToDissipate->startOfStack );
451 free( procrToDissipate );
452 }
456 /*This call's name indicates that request is malloc'd -- so req handler
457 * has to free any extra requests tacked on before a send, using this.
458 *
459 * This inserts the semantic-layer's request data into standard VMS carrier
460 * request data-struct that is mallocd. The sem request doesn't need to
461 * be malloc'd if this is called inside the same call chain before the
462 * send of the last request is called.
463 *
464 *The request handler has to call VMS__free_VMSReq for any of these
465 */
466 inline void
467 VMS__add_sem_request_in_mallocd_VMSReqst( void *semReqData,
468 VirtProcr *callingPr )
469 { VMSReqst *req;
471 req = VMS__malloc( sizeof(VMSReqst) );
472 req->reqType = semantic;
473 req->semReqData = semReqData;
474 req->nextReqst = callingPr->requests;
475 callingPr->requests = req;
476 }
478 /*This inserts the semantic-layer's request data into standard VMS carrier
479 * request data-struct is allocated on stack of this call & ptr to it sent
480 * to plugin
481 *Then it does suspend, to cause request to be sent.
482 */
483 inline void
484 VMS__send_sem_request( void *semReqData, VirtProcr *callingPr )
485 { VMSReqst req;
487 req.reqType = semantic;
488 req.semReqData = semReqData;
489 req.nextReqst = callingPr->requests;
490 callingPr->requests = &req;
492 VMS__suspend_procr( callingPr );
493 }
496 inline void
497 VMS__send_VMSSem_request( void *semReqData, VirtProcr *callingPr )
498 { VMSReqst req;
500 req.reqType = VMSSemantic;
501 req.semReqData = semReqData;
502 req.nextReqst = callingPr->requests; //gab any other preceeding
503 callingPr->requests = &req;
505 VMS__suspend_procr( callingPr );
506 }
508 void inline
509 VMS__send_inter_plugin_req( void *reqData, int32 targetMaster,
510 VirtProcr *requestingMaster )
511 { _VMSMasterEnv->interMasterRequestsFor[targetMaster] =
512 (InterMasterReqst *) reqData;
513 }
515 void inline
516 VMS__send_inter_VMSCore_req( InterVMSCoreReqst *reqData,
517 int32 targetMaster, VirtProcr *requestingMaster )
518 { _VMSMasterEnv->interMasterRequestsFor[targetMaster] =
519 (InterMasterReqst *) reqData;
520 }
522 /*
523 */
524 VMSReqst *
525 VMS__take_next_request_out_of( VirtProcr *procrWithReq )
526 { VMSReqst *req;
528 req = procrWithReq->requests;
529 if( req == NULL ) return NULL;
531 procrWithReq->requests = procrWithReq->requests->nextReqst;
532 return req;
533 }
536 inline void *
537 VMS__take_sem_reqst_from( VMSReqst *req )
538 {
539 return req->semReqData;
540 }
544 /* This is for OS requests and VMS infrastructure requests, such as to create
545 * a probe -- a probe is inside the heart of VMS-core, it's not part of any
546 * language -- but it's also a semantic thing that's triggered from and used
547 * in the application.. so it crosses abstractions.. so, need some special
548 * pattern here for handling such requests.
549 * Doing this just like it were a second language sharing VMS-core.
550 *
551 * This is called from the language's request handler when it sees a request
552 * of type VMSSemReq
553 *
554 * TODO: Later change this, to give probes their own separate plugin & have
555 * VMS-core steer the request to appropriate plugin
556 * Do the same for OS calls -- look later at it..
557 */
558 void inline
559 VMS__handle_VMSSemReq( VMSReqst *req, VirtProcr *requestingPr, void *semEnv,
560 ResumePrFnPtr resumePrFnPtr )
561 { VMSSemReq *semReq;
562 IntervalProbe *newProbe;
564 semReq = req->semReqData;
566 switch(semReq->reqType){
567 case createProbe:
568 newProbe = VMS__malloc( sizeof(IntervalProbe) );
569 newProbe->nameStr = VMS__strDup( (char*)semReq->data );
570 newProbe->hist = NULL;
571 newProbe->schedChoiceWasRecorded = FALSE;
573 //This runs in masterVP, so no race-condition worries
574 newProbe->probeID =
575 addToDynArray( newProbe, _VMSMasterEnv->dynIntervalProbesInfo );
576 requestingPr->dataRetFromReq = newProbe;
577 break;
578 case interMasterReqst:
579 VMS__sendInterMasterReqst(semReq->receiverID,
580 (InterMasterReqst*)semReq->data);
581 break;
582 default:
583 break;
584 }
586 resumePrFnPtr( requestingPr, semEnv );
587 }
591 /*This must be called by the request handler plugin -- it cannot be called
592 * from the semantic library "dissipate processor" function -- instead, the
593 * semantic layer has to generate a request, and the plug-in calls this
594 * function.
595 *The reason is that this frees the virtual processor's stack -- which is
596 * still in use inside semantic library calls!
597 *
598 *This frees or recycles all the state owned by and comprising the VMS
599 * portion of the animating virtual procr. The request handler must first
600 * free any semantic data created for the processor that didn't use the
601 * VMS_malloc mechanism. Then it calls this, which first asks the malloc
602 * system to disown any state that did use VMS_malloc, and then frees the
603 * statck and the processor-struct itself.
604 *If the dissipated processor is the sole (remaining) owner of VMS__malloc'd
605 * state, then that state gets freed (or sent to recycling) as a side-effect
606 * of dis-owning it.
607 */
608 void
609 VMS__dissipate_procr( VirtProcr *animatingPr )
610 {
611 //dis-own all locations owned by this processor, causing to be freed
612 // any locations that it is (was) sole owner of
613 //TODO: implement VMS__malloc system, including "give up ownership"
616 //NOTE: initialData was given to the processor, so should either have
617 // been alloc'd with VMS__malloc, or freed by the level above animPr.
618 //So, all that's left to free here is the stack and the VirtProcr struc
619 // itself
620 //Note, should not stack-allocate initial data -- no guarantee, in
621 // general that creating processor will outlive ones it creates.
623 VMS__free( animatingPr->startOfStack);
624 VMS__free( animatingPr);
625 }
628 //TODO: look at architecting cleanest separation between request handler
629 // and master loop, for dissipate, create, shutdown, and other non-semantic
630 // requests. Issue is chain: one removes requests from AppVP, one dispatches
631 // on type of request, and one handles each type.. but some types require
632 // action from both request handler and master loop -- maybe just give the
633 // request handler calls like: VMS__handle_X_request_type
636 /*This is called by the semantic layer's request handler when it decides its
637 * time to shut down the VMS system. Calling this causes the core loop OS
638 * threads to exit, which unblocks the entry-point function that started up
639 * VMS, and allows it to grab the result and return to the original single-
640 * threaded application.
641 *
642 *The _VMSMasterEnv is needed by this shut down function, so the create-seed-
643 * and-wait function has to free a bunch of stuff after it detects the
644 * threads have all died: the masterEnv, the thread-related locations,
645 * masterVP any AppVPs that might still be allocated and sitting in the
646 * semantic environment, or have been orphaned in the _VMSWorkQ.
647 *
648 *NOTE: the semantic plug-in is expected to use VMS__malloc to get all the
649 * locations it needs, and give ownership to masterVP. Then, they will be
650 * automatically freed.
651 *
652 *In here,create one core-loop shut-down processor for each core loop and put
653 * them all directly into the readyToAnimateQ.
654 *Note, this function can ONLY be called after the semantic environment no
655 * longer cares if AppVPs get animated after the point this is called. In
656 * other words, this can be used as an abort, or else it should only be
657 * called when all AppVPs have finished dissipate requests -- only at that
658 * point is it sure that all results have completed.
659 */
660 void
661 VMS__shutdown()
662 { int coreIdx;
663 //Send a shutdown Request to all MasterLoops.
664 for( coreIdx=0; coreIdx < NUM_CORES; coreIdx++ )
665 { //Note, this is running in the master
666 InterVMSCoreReqst *shutdownReqst = VMS__malloc(sizeof(InterVMSCoreReqst));
667 shutdownReqst->secondReqType = shutdownVP;
668 VMS__sendInterMasterReqst(coreIdx, (InterMasterReqst*)shutdownReqst);
669 }
671 }
674 /*Am trying to be cute, avoiding IF statement in coreLoop that checks for
675 * a special shutdown procr. Ended up with extra-complex shutdown sequence.
676 *This function has the sole purpose of setting the stack and framePtr
677 * to the coreLoop's stack and framePtr.. it does that then jumps to the
678 * core loop's shutdown point -- might be able to just call Pthread_exit
679 * from here, but am going back to the pthread's stack and setting everything
680 * up just as if it never jumped out, before calling pthread_exit.
681 *The end-point of core loop will free the stack and so forth of the
682 * processor that animates this function, (this fn is transfering the
683 * animator of the AppVP that is in turn animating this function over
684 * to core loop function -- note that this slices out a level of virtual
685 * processors).
686 */
687 /*
688 void
689 endOSThreadFn( void *initData, VirtProcr *animatingPr )
690 {
691 #ifdef SEQUENTIAL
692 asmTerminateCoreLoopSeq(animatingPr);
693 #else
694 asmTerminateCoreLoop(animatingPr);
695 #endif
696 }
697 */
700 /*This is called from the startup & shutdown
701 */
702 void
703 VMS__cleanup_at_end_of_shutdown()
704 {
705 // Set to zero so that all data structures are freed correctly
706 _VMSMasterEnv->currentMasterProcrID = 0;
708 //unused
709 //VMSQueueStruc **readyToAnimateQs;
710 //int coreIdx;
711 //VirtProcr **masterVPs;
712 //SchedSlot ***allSchedSlots; //ptr to array of ptrs
714 //Before getting rid of everything, print out any measurements made
715 //forAllInDynArrayDo( _VMSMasterEnv->measHistsInfo, (DynArrayFnPtr)&printHist );
716 //forAllInDynArrayDo( _VMSMasterEnv->measHistsInfo, (DynArrayFnPtr)&saveHistToFile);
717 //forAllInDynArrayDo( _VMSMasterEnv->measHistsInfo, &freeHistExt );
718 #ifdef MEAS__TIME_PLUGIN
719 printHist( _VMSMasterEnv->reqHdlrLowTimeHist );
720 saveHistToFile( _VMSMasterEnv->reqHdlrLowTimeHist );
721 printHist( _VMSMasterEnv->reqHdlrHighTimeHist );
722 saveHistToFile( _VMSMasterEnv->reqHdlrHighTimeHist );
723 freeHistExt( _VMSMasterEnv->reqHdlrLowTimeHist );
724 freeHistExt( _VMSMasterEnv->reqHdlrHighTimeHist );
725 #endif
726 #ifdef MEAS__TIME_MALLOC
727 printHist( _VMSMasterEnv->mallocTimeHist );
728 saveHistToFile( _VMSMasterEnv->mallocTimeHist );
729 printHist( _VMSMasterEnv->freeTimeHist );
730 saveHistToFile( _VMSMasterEnv->freeTimeHist );
731 freeHistExt( _VMSMasterEnv->mallocTimeHist );
732 freeHistExt( _VMSMasterEnv->freeTimeHist );
733 #endif
734 #ifdef MEAS__TIME_MASTER_LOCK
735 printHist( _VMSMasterEnv->masterLockLowTimeHist );
736 printHist( _VMSMasterEnv->masterLockHighTimeHist );
737 #endif
738 #ifdef MEAS__TIME_MASTER
739 printHist( _VMSMasterEnv->pluginTimeHist );
740 for( coreIdx = 0; coreIdx < NUM_CORES; coreIdx++ )
741 {
742 freeVMSQ( readyToAnimateQs[ coreIdx ] );
743 //master VPs were created external to VMS, so use external free
744 VMS__dissipate_procr( masterVPs[ coreIdx ] );
746 freeSchedSlots( allSchedSlots[ coreIdx ] );
747 }
748 #endif
749 #ifdef MEAS__TIME_STAMP_SUSP
750 printHist( _VMSMasterEnv->pluginTimeHist );
751 for( coreIdx = 0; coreIdx < NUM_CORES; coreIdx++ )
752 {
753 freeVMSQ( readyToAnimateQs[ coreIdx ] );
754 //master VPs were created external to VMS, so use external free
755 VMS__dissipate_procr( masterVPs[ coreIdx ] );
757 freeSchedSlots( allSchedSlots[ coreIdx ] );
758 }
759 #endif
761 //All the environment data has been allocated with VMS__malloc, so just
762 // free its internal big-chunk and all inside it disappear.
763 /*
764 readyToAnimateQs = _VMSMasterEnv->readyToAnimateQs;
765 masterVPs = _VMSMasterEnv->masterVPs;
766 allSchedSlots = _VMSMasterEnv->allSchedSlots;
768 for( coreIdx = 0; coreIdx < NUM_CORES; coreIdx++ )
769 {
770 freeVMSQ( readyToAnimateQs[ coreIdx ] );
771 //master VPs were created external to VMS, so use external free
772 VMS__dissipate_procr( masterVPs[ coreIdx ] );
774 freeSchedSlots( allSchedSlots[ coreIdx ] );
775 }
777 VMS__free( _VMSMasterEnv->readyToAnimateQs );
778 VMS__free( _VMSMasterEnv->masterVPs );
779 VMS__free( _VMSMasterEnv->allSchedSlots );
781 //============================= MEASUREMENT STUFF ========================
782 #ifdef STATS__TURN_ON_PROBES
783 freeDynArrayDeep( _VMSMasterEnv->dynIntervalProbesInfo, &VMS__free_probe);
784 #endif
785 //========================================================================
786 */
787 //These are the only two that use system free
788 int i;
789 for(i=0; i<NUM_CORES; i++)
790 VMS_ext__free_free_list( _VMSMasterEnv->freeLists[i]);
791 free( (void *)_VMSMasterEnv );
792 }
795 //================================
798 /*Later, improve this -- for now, just exits the application after printing
799 * the error message.
800 */
801 void
802 VMS__throw_exception( char *msgStr, VirtProcr *reqstPr, VMSExcp *excpData )
803 {
804 printf("%s",msgStr);
805 fflush(stdin);
806 exit(1);
807 }