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Ali Ijaz Sheikh 9910860a93 deps: V8: cherry-pick 163d360 from upstream Original commit message [heap] Fix memory leak in the remembered set. Empty slot set buckets can leak in the following scenarios. Scenario 1 (large object space): 1) A large array is allocated in the large object space. 2) The array is filled with old->new references, which allocates new slot set buckets. 3) The references are overwritten with smis or old space pointers, which make the slots set buckets empty. 4) Garbage collection (scavenge or mark-compact) iterates the slots set of the array and pre-frees the empty buckets. 5) Steps 2-4 repeated many times and leak arbitary many empty buckets. The fix to free empty buckets for large object space in mark-compact. Scenario 2 (no mark-compact): 1) A small array is allocated in the old space. 2) The array is filled with old->new references, which allocates new slot set buckets. 3) The references are overwritten with smis or old space pointers, which make the slots set buckets empty. 4) Scavenge iterates the slots set of the array and pre-frees the empty buckets. 5) Steps 2-4 repeated many times and leak arbitary many empty buckets. The fix to free empty buckets for swept pages in scavenger. Bug: v8:6800 TBR: mlippautz@chromium.org Change-Id: I48d94870f5acf4f6208858271886911c895a9126 Reviewed-on: https://chromium-review.googlesource.com/668442 Reviewed-by: Ulan Degenbaev <ulan@chromium.org> Commit-Queue: Ulan Degenbaev <ulan@chromium.org> Cr-Commit-Position: refs/heads/master@{#48041} PR-URL: https://github.com/nodejs/node/pull/15664 Reviewed-By: Colin Ihrig <cjihrig@gmail.com> Reviewed-By: Benedikt Meurer <benedikt.meurer@gmail.com> Reviewed-By: Michaël Zasso <targos@protonmail.com> Reviewed-By: James M Snell <jasnell@gmail.com>		8 years ago
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cares	deps: cherry-pick 0ef4a0c64b6 from c-ares upstream	8 years ago
gtest	gtest: output tap comments as yamlish	8 years ago
http_parser	deps: update to http-parser 2.7.0	9 years ago
icu-small	deps: delete deps/icu-small/source/io	8 years ago
nghttp2	deps: define BUILDING_NGHTTP2 during nghttp2 build	8 years ago
node-inspect	deps: update node-inspect to v1.11.2	8 years ago
npm	deps: hotfix to bump npx version	8 years ago
openssl	build: add NetBSD support to opensslconf.h	8 years ago
uv	deps: upgrade libuv to 1.14.1	8 years ago
v8	deps: V8: cherry-pick 163d360 from upstream	8 years ago
zlib	deps: fix CLEAR_HASH macro to be usable as a single statement	8 years ago