Mercurial > hg > truffle
comparison src/share/vm/gc_implementation/g1/concurrentMarkThread.cpp @ 20302:3bf2fc51186b
8048085: Aborting marking just before remark results in useless additional clearing of the next mark bitmap
Summary: Skip clearing the next bitmap if we just recently aborted since the full GC already clears this bitmap.
Reviewed-by: brutisso
| author | tschatzl |
|---|---|
| date | Mon, 21 Jul 2014 09:59:46 +0200 |
| parents | 581e70386ec9 |
| children |
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| 20301:4baf9bb2376c | 20302:3bf2fc51186b |
|---|---|
| 273 } | 273 } |
| 274 } | 274 } |
| 275 | 275 |
| 276 // We now want to allow clearing of the marking bitmap to be | 276 // We now want to allow clearing of the marking bitmap to be |
| 277 // suspended by a collection pause. | 277 // suspended by a collection pause. |
| 278 { | 278 // We may have aborted just before the remark. Do not bother clearing the |
| 279 // bitmap then, as it has been done during mark abort. | |
| 280 if (!cm()->has_aborted()) { | |
| 279 SuspendibleThreadSetJoiner sts; | 281 SuspendibleThreadSetJoiner sts; |
| 280 _cm->clearNextBitmap(); | 282 _cm->clearNextBitmap(); |
| 283 } else { | |
| 284 assert(!G1VerifyBitmaps || _cm->nextMarkBitmapIsClear(), "Next mark bitmap must be clear"); | |
| 281 } | 285 } |
| 282 } | 286 } |
| 283 | 287 |
| 284 // Update the number of full collections that have been | 288 // Update the number of full collections that have been |
| 285 // completed. This will also notify the FullGCCount_lock in case a | 289 // completed. This will also notify the FullGCCount_lock in case a |