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comparison src/share/vm/gc_implementation/g1/collectionSetChooser.cpp @ 2435:371bbc844bf1

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7027766: G1: introduce flag to dump the liveness information per region at the end of marking Summary: Repurpose the existing flag G1PrintRegionLivenessInfo to print out the liveness distribution across the regions in the heap at the end of marking. Reviewed-by: iveresov, jwilhelm
author tonyp
date Mon, 04 Apr 2011 14:23:17 -0400
parents f95d63e2154a
children 20213c8a3c40
comparison
equal deleted inserted replaced
2434:c84ee870e0b9 2435:371bbc844bf1
260 gclog_or_tty->print_cr(" Sorted %d marked regions.", _numMarkedRegions); 260 gclog_or_tty->print_cr(" Sorted %d marked regions.", _numMarkedRegions);
261 } 261 }
262 for (int i = 0; i < _numMarkedRegions; i++) { 262 for (int i = 0; i < _numMarkedRegions; i++) {
263 assert(_markedRegions.at(i) != NULL, "Should be true by sorting!"); 263 assert(_markedRegions.at(i) != NULL, "Should be true by sorting!");
264 _markedRegions.at(i)->set_sort_index(i); 264 _markedRegions.at(i)->set_sort_index(i);
265 if (G1PrintRegionLivenessInfo > 0) { 265 }
266 if (i == 0) gclog_or_tty->print_cr("Sorted marked regions:"); 266 if (G1PrintRegionLivenessInfo) {
267 if (i < G1PrintRegionLivenessInfo || 267 G1PrintRegionLivenessInfoClosure cl(gclog_or_tty, "Post-Sorting");
268 (_numMarkedRegions-i) < G1PrintRegionLivenessInfo) { 268 for (int i = 0; i < _numMarkedRegions; ++i) {
269 HeapRegion* hr = _markedRegions.at(i); 269 HeapRegion* r = _markedRegions.at(i);
270 size_t u = hr->used(); 270 cl.doHeapRegion(r);
271 gclog_or_tty->print_cr(" Region %d: %d used, %d max live, %5.2f%%.", 271 }
272 i, u, hr->max_live_bytes(), 272 }
273 100.0*(float)hr->max_live_bytes()/(float)u);
274 }
275 }
276 }
277 if (G1PolicyVerbose > 1)
278 printSortedHeapRegions();
279 assert(verify(), "should now be sorted"); 273 assert(verify(), "should now be sorted");
280 }
281
282 void
283 printHeapRegion(HeapRegion *hr) {
284 if (hr->isHumongous())
285 gclog_or_tty->print("H: ");
286 if (hr->in_collection_set())
287 gclog_or_tty->print("CS: ");
288 gclog_or_tty->print_cr("Region " PTR_FORMAT " (%s%s) "
289 "[" PTR_FORMAT ", " PTR_FORMAT"] "
290 "Used: " SIZE_FORMAT "K, garbage: " SIZE_FORMAT "K.",
291 hr, hr->is_young() ? "Y " : " ",
292 hr->is_marked()? "M1" : "M0",
293 hr->bottom(), hr->end(),
294 hr->used()/K, hr->garbage_bytes()/K);
295 } 274 }
296 275
297 void 276 void
298 CollectionSetChooser::addMarkedHeapRegion(HeapRegion* hr) { 277 CollectionSetChooser::addMarkedHeapRegion(HeapRegion* hr) {
299 assert(!hr->isHumongous(), 278 assert(!hr->isHumongous(),
349 _cache.clear(); 328 _cache.clear();
350 }; 329 };
351 330
352 void 331 void
353 CollectionSetChooser::updateAfterFullCollection() { 332 CollectionSetChooser::updateAfterFullCollection() {
354 G1CollectedHeap* g1h = G1CollectedHeap::heap();
355 clearMarkedHeapRegions(); 333 clearMarkedHeapRegions();
356 }
357
358 void
359 CollectionSetChooser::printSortedHeapRegions() {
360 gclog_or_tty->print_cr("Printing %d Heap Regions sorted by amount of known garbage",
361 _numMarkedRegions);
362
363 DEBUG_ONLY(int marked_count = 0;)
364 for (int i = 0; i < _markedRegions.length(); i++) {
365 HeapRegion* r = _markedRegions.at(i);
366 if (r != NULL) {
367 printHeapRegion(r);
368 DEBUG_ONLY(marked_count++;)
369 }
370 }
371 assert(marked_count == _numMarkedRegions, "must be");
372 gclog_or_tty->print_cr("Done sorted heap region print");
373 } 334 }
374 335
375 void CollectionSetChooser::removeRegion(HeapRegion *hr) { 336 void CollectionSetChooser::removeRegion(HeapRegion *hr) {
376 int si = hr->sort_index(); 337 int si = hr->sort_index();
377 assert(si == -1 || hr->is_marked(), "Sort index not valid."); 338 assert(si == -1 || hr->is_marked(), "Sort index not valid.");