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[v24.x backport] v8: adding total_allocated_bytes to HeapStatistics - #60801
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caiolima wants to merge 6 commits into
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[v24.x backport] v8: adding total_allocated_bytes to HeapStatistics#60801caiolima wants to merge 6 commits into
caiolima wants to merge 6 commits into
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Original commit message: [api] Adding total allocated bytes in HeapStatistics This change exposes total allocated bytes in v8::HeapStatistics API by introducing a new total_allocated_bytes() method that tracks all heap allocations since an Isolate creation. The implementation adds: - uint64_t total_allocated_bytes_ field to HeapStatistics. - An atomic total allocation counter is stored in the Heap class. - The counter is incremented whenever a RestLab is called. This approach can overestimate the total allocation for cases where the LAB is not fully used, but the leftover compared to the LAB itself is quite small, so it seems tolerable. Design doc reference: https://docs.google.com/document/d/1O4JPsoaxTQsX_7T5Fz4rsGeHMiM16jUrvDuq9FrtbNM Change-Id: Ic531698aaeb1578f943b7fdd346b9159ffd9b6c9 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/6996467 Reviewed-by: Dominik Inführ <dinfuehr@chromium.org> Reviewed-by: Michael Lippautz <mlippautz@chromium.org> Commit-Queue: Dmitry Bezhetskov <dima00782@gmail.com> Cr-Commit-Position: refs/heads/main@{#103296} Refs: v8/v8@fe81545 Co-authored-by: Caio Lima <caiolima@igalia.com> PR-URL: nodejs#60429 Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>
PR-URL: nodejs#60573 Reviewed-By: theanarkh <theratliter@gmail.com> Reviewed-By: Anna Henningsen <anna@addaleax.net> Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com> Reviewed-By: Chengzhong Wu <legendecas@gmail.com> Reviewed-By: Colin Ihrig <cjihrig@gmail.com> Reviewed-By: Marco Ippolito <marcoippolito54@gmail.com> Reviewed-By: James M Snell <jasnell@gmail.com> fixing tab error.
nodejs-github-bot
commented
Nov 21, 2025
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Review requested:
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richardlau
commented
Nov 21, 2025
Member
I'm no expert on ABI's, but doesn't that change just shift the breakage to |
caiolima
commented
Nov 21, 2025
ContributorAuthor
I'm not an expert either, so my understanding might be faulty. IIUC, the addition of new non-virtual methods doesn't break ABI, while changing the layout of HeapStatistics do. Any program that compiles with previous |
caiolima
commented
Nov 21, 2025
ContributorAuthor
I'm also considering here that the addition of |
Original commit message: Reland "[riscv] Fix Check failed in bind_to" This is a reland of commit fdb5de2c741658e94944f2ec1218530e98601c23 Original change's description: > [riscv] Fix Check failed in bind_to > > The trampoline should be emitted before the constant pool. > > Bug: 420232092 > > Change-Id: I3a909b122607e37aca9d8765f28810ec74d5dc0b > Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/6578135 > Auto-Submit: Yahan Lu (LuYahan) <yahan@iscas.ac.cn> > Reviewed-by: Ji Qiu <qiuji@iscas.ac.cn> > Commit-Queue: Ji Qiu <qiuji@iscas.ac.cn> > Cr-Commit-Position: refs/heads/main@{#100480} Bug: 420232092 Change-Id: I1fac1ed8c349383ef4510abea338b3d695ed57ab Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/6595668 Commit-Queue: Ji Qiu <qiuji@iscas.ac.cn> Reviewed-by: Ji Qiu <qiuji@iscas.ac.cn> Cr-Commit-Position: refs/heads/main@{#100745} Refs: v8/v8@bbaae8e Co-authored-by: kxxt <rsworktech@outlook.com> PR-URL: nodejs#60962 Reviewed-By: Richard Lau <richard.lau@ibm.com> Reviewed-By: Stewart X Addison <sxa@redhat.com>
Original commit message: [riscv] Check trampoline before Constant pool in Release mode Change-Id: I9645cded9328dabb2c11c7859b998c838b95f97b Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/6653368 Commit-Queue: Ji Qiu <qiuji@iscas.ac.cn> Reviewed-by: Ji Qiu <qiuji@iscas.ac.cn> Cr-Commit-Position: refs/heads/main@{#100935} Refs: v8/v8@394a805 PR-URL: nodejs#60962 Reviewed-By: Richard Lau <richard.lau@ibm.com> Reviewed-By: Stewart X Addison <sxa@redhat.com>
Original commit message: [riscv] Fix the RISC-V build. Due to recent changes, there were missing implementations of various methods needed in the simulator and Maglev. Additionally, a static_cast is needed in the assembler to silence a warning. Port commit dfc894cd22d86ce42830e3bfdf485d963f6396ad Port commit c33af9bd408eadd6b62571f862bcb5b763c98ad9 Change-Id: Ie37a1cfa8225fc12f367ff62139cc7cd8fa967d0 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/6396542 Reviewed-by: Victor Gomes <victorgomes@chromium.org> Commit-Queue: Yahan Lu (LuYahan) <yahan@iscas.ac.cn> Reviewed-by: Ji Qiu <qiuji@iscas.ac.cn> Reviewed-by: Yahan Lu (LuYahan) <yahan@iscas.ac.cn> Cr-Commit-Position: refs/heads/main@{#99706} Refs: v8/v8@1441665 PR-URL: nodejs#60989 Reviewed-By: Richard Lau <richard.lau@ibm.com> Reviewed-By: Beth Griggs <bethanyngriggs@gmail.com>
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This PR contains backport of #60573 to v24. Since it depends on #60429, it also includes a backport version of this PR as well.
To avoid ABI changes, we are also taking in consideration the changes proposed on #60800 from original V8 PR where
Isolate:: GetTotalAllocatedBytesis introduced as an alternative method to gettotal_allocated_bytes_. This avoids ABI breakage due to changes made onHeapStatistics.