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comparison src/share/vm/gc_implementation/g1/g1MarkSweep.cpp @ 6254:a2f7274eb6ef

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7114678: G1: various small fixes, code cleanup, and refactoring Summary: Various cleanups as a prelude to introducing iterators for HeapRegions. Reviewed-by: johnc, brutisso
author tonyp
date Thu, 19 Jul 2012 15:15:54 -0700
parents b632e80fc9dc
children da91efe96a93
comparison
equal deleted inserted replaced
6253:db823a892a55 6254:a2f7274eb6ef
260 } 260 }
261 return false; 261 return false;
262 } 262 }
263 }; 263 };
264 264
265 // Finds the first HeapRegion.
266 class FindFirstRegionClosure: public HeapRegionClosure {
267 HeapRegion* _a_region;
268 public:
269 FindFirstRegionClosure() : _a_region(NULL) {}
270 bool doHeapRegion(HeapRegion* r) {
271 _a_region = r;
272 return true;
273 }
274 HeapRegion* result() { return _a_region; }
275 };
276
277 void G1MarkSweep::mark_sweep_phase2() { 265 void G1MarkSweep::mark_sweep_phase2() {
278 // Now all live objects are marked, compute the new object addresses. 266 // Now all live objects are marked, compute the new object addresses.
279 267
280 // It is imperative that we traverse perm_gen LAST. If dead space is 268 // It is imperative that we traverse perm_gen LAST. If dead space is
281 // allowed a range of dead object may get overwritten by a dead int 269 // allowed a range of dead object may get overwritten by a dead int
292 Generation* pg = g1h->perm_gen(); 280 Generation* pg = g1h->perm_gen();
293 281
294 TraceTime tm("phase 2", G1Log::fine() && Verbose, true, gclog_or_tty); 282 TraceTime tm("phase 2", G1Log::fine() && Verbose, true, gclog_or_tty);
295 GenMarkSweep::trace("2"); 283 GenMarkSweep::trace("2");
296 284
297 FindFirstRegionClosure cl; 285 // find the first region
298 g1h->heap_region_iterate(&cl); 286 HeapRegion* r = g1h->region_at(0);
299 HeapRegion *r = cl.result();
300 CompactibleSpace* sp = r; 287 CompactibleSpace* sp = r;
301 if (r->isHumongous() && oop(r->bottom())->is_gc_marked()) { 288 if (r->isHumongous() && oop(r->bottom())->is_gc_marked()) {
302 sp = r->next_compaction_space(); 289 sp = r->next_compaction_space();
303 } 290 }
304 291
406 393
407 G1SpaceCompactClosure blk; 394 G1SpaceCompactClosure blk;
408 g1h->heap_region_iterate(&blk); 395 g1h->heap_region_iterate(&blk);
409 396
410 } 397 }
411
412 // Local Variables: ***
413 // c-indentation-style: gnu ***
414 // End: ***