Mercurial > hg > icedtea8-forest > hotspot
changeset 10904:827e57cd9f8a
8216987: ciMethodData::load_data() unpacks MDOs with non-atomic copy
Reviewed-by: kvn, mdoerr, thartmann
author | eosterlund |
---|---|
date | Tue, 29 Jan 2019 10:13:23 +0100 |
parents | 03570d8cebe0 |
children | f57189b7648d |
files | src/share/vm/ci/ciMethodData.cpp |
diffstat | 1 files changed, 6 insertions(+), 4 deletions(-) [+] |
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--- a/src/share/vm/ci/ciMethodData.cpp Sat May 11 01:17:18 2019 +0900 +++ b/src/share/vm/ci/ciMethodData.cpp Tue Jan 29 10:13:23 2019 +0100 @@ -120,15 +120,17 @@ // Snapshot the data -- actually, take an approximate snapshot of // the data. Any concurrently executing threads may be changing the // data as we copy it. - Copy::disjoint_words((HeapWord*) mdo, - (HeapWord*) &_orig, - sizeof(_orig) / HeapWordSize); + Copy::disjoint_words_atomic((HeapWord*) mdo, + (HeapWord*) &_orig, + sizeof(_orig) / HeapWordSize); Arena* arena = CURRENT_ENV->arena(); _data_size = mdo->data_size(); _extra_data_size = mdo->extra_data_size(); int total_size = _data_size + _extra_data_size; _data = (intptr_t *) arena->Amalloc(total_size); - Copy::disjoint_words((HeapWord*) mdo->data_base(), (HeapWord*) _data, total_size / HeapWordSize); + Copy::disjoint_words_atomic((HeapWord*) mdo->data_base(), + (HeapWord*) _data, + total_size / HeapWordSize); // Traverse the profile data, translating any oops into their // ci equivalents.