- 08 Oct, 2021 1 commit
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Shu-yu Guo authored
This CL adds a new snapshot to hold objects that are in the shared heap or may need to be in the shared heap depending on runtime flags. Currently this is to support --shared-string-table, which puts all in-place-internalizable strings, internalized strings, and the string table into the shared heap. The shared heap snapshot is never deserialized into client Isolates. This means when V8 is started without a shared Isolate, the shared heap snapshot is deserialized into all Isolates. Bug: v8:12007 Change-Id: I7eeab73080cda2e8250a5a49747f25b2440a349d Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3173905 Commit-Queue: Shu-yu Guo <syg@chromium.org> Reviewed-by:
Jakob Gruber <jgruber@chromium.org> Reviewed-by:
Toon Verwaest <verwaest@chromium.org> Cr-Commit-Position: refs/heads/main@{#77309}
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- 27 Sep, 2021 1 commit
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Igor Sheludko authored
... an ObjectVisitor subclass that takes care of caching values of both the main pointer compression cage base and code cage base (when the external code space is enabled). Drive-by: this CL also changes signature of RelocInfo::target_object_no_host(...) to accept PtrComprCageBase instead of Isolate*. Bug: v8:11880 Change-Id: I3fbb382e0a0170e28542bc495d8fecfd24da8a07 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3182231 Commit-Queue: Igor Sheludko <ishell@chromium.org> Reviewed-by:
Camillo Bruni <cbruni@chromium.org> Reviewed-by:
Michael Lippautz <mlippautz@chromium.org> Cr-Commit-Position: refs/heads/main@{#77088}
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- 20 Aug, 2021 1 commit
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Seth Brenith authored
The heap snapshot view in the dev tools reports some incorrect retaining paths involving weak references from relocation data in Code objects. This change updates IndexedReferencesExtractor::VisitEmbeddedPointer to better match the behavior in MarkingVisitorBase. Drive-by cleanup: ObjectVisitor::VisitRelocInfo needn't be virtual because there's only one implementation. Bug: v8:12126 Change-Id: I669a7408e7a46e797b8c2b372235b4ea42ee22e1 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3107214Reviewed-by:
Yang Guo <yangguo@chromium.org> Commit-Queue: Seth Brenith <seth.brenith@microsoft.com> Cr-Commit-Position: refs/heads/main@{#76406}
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- 19 Jul, 2021 1 commit
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Igor Sheludko authored
... for visiting slots containing pointers to Code objects when external code space mode is enabled. These slots will require different handling once the code space is moved out of the V8 heap cage. This CL also introduces IsValidCodeObject() predicate similar to IsValidHeapObject() for checking if given HeapObject is a valid Code object. Tbr: cbruni@chromium.org Bug: v8:11880 Change-Id: I430940f4503cebfd2a6d387e44349810991a93e9 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3032085Reviewed-by:
Igor Sheludko <ishell@chromium.org> Reviewed-by:
Jakob Gruber <jgruber@chromium.org> Reviewed-by:
Michael Lippautz <mlippautz@chromium.org> Commit-Queue: Igor Sheludko <ishell@chromium.org> Cr-Commit-Position: refs/heads/master@{#75787}
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- 20 May, 2021 1 commit
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Ulan Degenbaev authored
This also removes small TODOs that are not worth tracking in a bug Change-Id: If61acd1239ac90a908327694b280846b1f676c25 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2909859Reviewed-by:
Michael Lippautz <mlippautz@chromium.org> Reviewed-by:
Jakob Gruber <jgruber@chromium.org> Commit-Queue: Ulan Degenbaev <ulan@chromium.org> Cr-Commit-Position: refs/heads/master@{#74698}
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- 20 Apr, 2021 1 commit
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Dominik Inführ authored
This allows using --track-retaining-path with incremental marking enabled. This CL will also track when an object was kept alive through the write barrier or the RetainMaps feature. Bug: v8:11645 Change-Id: I08ab5e500ae3580aead0c188c2caeb8f2a5f9f07 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2829440Reviewed-by:
Ulan Degenbaev <ulan@chromium.org> Commit-Queue: Dominik Inführ <dinfuehr@chromium.org> Cr-Commit-Position: refs/heads/master@{#74061}
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- 12 Apr, 2021 1 commit
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Wenyu Zhao authored
This CL adds features to pack/unpack map words. Currently V8 cannot store extra metadata in object headers -- because V8 objects do not have a proper header, but only a map pointer at the start of the object. To store per-object metadata like marking data, a side table is required as the per-object metadata storage. This CL enables V8 to use higher unused bits in a 64-bit map word as per-object metadata storage. Map pointer stores come with an extra step to encode the metadata into the pointer (we call it "map packing"). Map pointer loads will also remove the metadata bits as well (we call it "map packing"). Since the map word is no longer a valid pointer after packing, we also change the tag of the packed map word to make it looks like a Smi. This helps various GC and barrier code to correctly skip them instead of blindly dereferencing this invalid pointer. A ninja flag `v8_enable_map_packing` is provided to turn this map-packing feature on and off. It is disabled by default. * Only works on x64 platform, with `v8_enable_pointer_compression` set to `false` Bug: v8:11624 Change-Id: Ia2bdf79553945e5fc0b0874c87803d2cc733e073 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2247561Reviewed-by:
Ulan Degenbaev <ulan@chromium.org> Reviewed-by:
Nico Hartmann <nicohartmann@chromium.org> Reviewed-by:
Toon Verwaest <verwaest@chromium.org> Reviewed-by:
Georg Neis <neis@chromium.org> Commit-Queue: Ulan Degenbaev <ulan@chromium.org> Cr-Commit-Position: refs/heads/master@{#73915}
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- 07 Apr, 2021 1 commit
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Dominik Inführ authored
IMHO kStackRoots is more descriptive than kTop. Change-Id: I9eeffa6974ae0188021cb1628c2b21e691ab9490 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2810782Reviewed-by:
Victor Gomes <victorgomes@chromium.org> Reviewed-by:
Ulan Degenbaev <ulan@chromium.org> Commit-Queue: Dominik Inführ <dinfuehr@chromium.org> Cr-Commit-Position: refs/heads/master@{#73834}
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- 13 Aug, 2020 1 commit
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Leszek Swirski authored
Rather than an Object array, use a Tagged_t array to store the elements of the off-heap string table. This matches the old on-heap string table's behaviour, and recovers memory regressions from that work. To be able to do this, this also introduces a new slot type, OffHeapObjectSlot. This is because CompressedObjectSlot assumes that the slot is on-heap, and that it can mask the slot location to recover the isolate root. OffHeapObjectSlot doesn't define an operator*, and instead provides a `load(const Isolate*)` method. The other slots also gain this method so that they can use it in slot-templated functions. Also, the RootVisitor gains an OffHeapObjectSlot overload, which is UNREACHABLE by default and only needs to be defined by visitors that can access the string table. As a drive-by, fix some non-atomic accesses to the off-heap string table, also using the new slot. Bug: chromium:1109553 Bug: chromium:1115116 Bug: chromium:1115559 Bug: chromium:1115683 Change-Id: I819ed7bf820e9ef98ad5d5f9d0d592efbb6f5aa6 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2352489 Commit-Queue: Leszek Swirski <leszeks@chromium.org> Reviewed-by:
Jakob Gruber <jgruber@chromium.org> Reviewed-by:
Ulan Degenbaev <ulan@chromium.org> Cr-Commit-Position: refs/heads/master@{#69381}
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- 22 Apr, 2020 1 commit
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Dan Elphick authored
The partial snapshot/serializer/deserializer are renamed to context *, while the partial snapshot cache is renamed to startup object cache in line with the read-only object cache (as this better reflects where it lives and what it does). To avoid a gap in the file history due to renaming both the files and identifiers simulataneously, this leaves all the partial-*.* files in place. They will be renamed in a follow-up CL. Bug: v8:10416 Change-Id: I5ef41cad751aaa24b35ee2b3c72bd0295832f2c6 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2144115 Commit-Queue: Dan Elphick <delphick@chromium.org> Commit-Queue: Ulan Degenbaev <ulan@chromium.org> Auto-Submit: Dan Elphick <delphick@chromium.org> Reviewed-by:
Ulan Degenbaev <ulan@chromium.org> Reviewed-by:
Jakob Gruber <jgruber@chromium.org> Cr-Commit-Position: refs/heads/master@{#67306}
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- 06 Nov, 2019 1 commit
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Jakob Gruber authored
Now that builtins are embedded into the binary unconditionally, GC visitation can be reduced. The interpreter dispatch table points directly at embedded instruction starts. It is initialized once in Isolate::Init, and its contents are immutable afterwards. Visitation by GC is not needed. Drive-by: Remove outdated comment on IsWasmRuntimeStub. Bug: v8:7873 Change-Id: I14edc0beebb31c04f1429346b57ade9e8d838670 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1899773Reviewed-by:
Ulan Degenbaev <ulan@chromium.org> Reviewed-by:
Ross McIlroy <rmcilroy@chromium.org> Commit-Queue: Jakob Gruber <jgruber@chromium.org> Cr-Commit-Position: refs/heads/master@{#64814}
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- 24 May, 2019 1 commit
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Yang Guo authored
TBR=mvstanton@chromium.org,neis@chromium.org,ahaas@chromium.org Bug: v8:9247 Change-Id: I5433c863a54f3412d73df0d38aba3fdbcfac7ebe Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1627973 Commit-Queue: Yang Guo <yangguo@chromium.org> Auto-Submit: Yang Guo <yangguo@chromium.org> Reviewed-by:
Michael Starzinger <mstarzinger@chromium.org> Cr-Commit-Position: refs/heads/master@{#61830}
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- 09 May, 2019 1 commit
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Igor Sheludko authored
This is a first step towards unification of Object and MaybeObject definitions. Having an TaggedImpl template will simplify adding compressed variants of Object and MaybeObject which is required for avoiding unnecessary value decompression in tight value copying loops and write barrier implementations. Bug: v8:7703, v8:9183 Change-Id: I4c1931c22359533d50cf4a2c7f1339dd55c0c707 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1588460Reviewed-by:
Ulan Degenbaev <ulan@chromium.org> Reviewed-by:
Jakob Kummerow <jkummerow@chromium.org> Commit-Queue: Igor Sheludko <ishell@chromium.org> Cr-Commit-Position: refs/heads/master@{#61385}
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- 08 Mar, 2019 1 commit
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Sigurd Schneider authored
This modifies the ObjectVisitor to provide a dedicated VisitEphemeron method invoked when visiting a EphemeronHashTable. This is pre-work for further changes to how ephemerons are handled during scavenging. Bug: v8:8557 Change-Id: Ia423b10667ec222cbe5f44d8a931ea33314625f4 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1508673Reviewed-by:
Sigurd Schneider <sigurds@chromium.org> Reviewed-by:
Ulan Degenbaev <ulan@chromium.org> Commit-Queue: Sigurd Schneider <sigurds@chromium.org> Cr-Commit-Position: refs/heads/master@{#60119}
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- 06 Mar, 2019 1 commit
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Igor Sheludko authored
... and fix header includes to please the respective bot. Drive-by-fix: decompression implementation is now MSVC friendly. Bug: v8:7703, v8:8834 Change-Id: Iaf589138e5bafb32b0d9feab5cf074b71f241a3c Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1505579 Commit-Queue: Igor Sheludko <ishell@chromium.org> Reviewed-by:
Ulan Degenbaev <ulan@chromium.org> Cr-Commit-Position: refs/heads/master@{#60074}
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- 20 Dec, 2018 1 commit
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Jakob Kummerow authored
Merging the temporary HeapObjectPtr back into HeapObject. Bug: v8:3770 Change-Id: I5bcd23ca2f5ba862cf5b52955dca143e531c637b Reviewed-on: https://chromium-review.googlesource.com/c/1386492 Commit-Queue: Jakob Kummerow <jkummerow@chromium.org> Reviewed-by:
Clemens Hammacher <clemensh@chromium.org> Reviewed-by:
Ulan Degenbaev <ulan@chromium.org> Reviewed-by:
Michael Stanton <mvstanton@chromium.org> Reviewed-by:
Jakob Gruber <jgruber@chromium.org> Cr-Commit-Position: refs/heads/master@{#58410}
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- 17 Dec, 2018 1 commit
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Jakob Kummerow authored
Bug: v8:3770 Change-Id: Ie80ce957ff1d2bcd3596491066f6562ce0ad129a Reviewed-on: https://chromium-review.googlesource.com/c/1380114 Commit-Queue: Jakob Kummerow <jkummerow@chromium.org> Reviewed-by:
Ulan Degenbaev <ulan@chromium.org> Reviewed-by:
Andreas Haas <ahaas@chromium.org> Reviewed-by:
Yang Guo <yangguo@chromium.org> Cr-Commit-Position: refs/heads/master@{#58294}
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- 10 Dec, 2018 2 commits
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Igor Sheludko authored
which used to treat off-heap slots as on-heap ones and implement embedded objects visitation in derived visitor classes. Bug: v8:8518 Change-Id: Ia40d8135078379cca990e9167d3f1bebb3b5be0a Reviewed-on: https://chromium-review.googlesource.com/c/1367747Reviewed-by:
Ulan Degenbaev <ulan@chromium.org> Commit-Queue: Igor Sheludko <ishell@chromium.org> Cr-Commit-Position: refs/heads/master@{#58123}
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Igor Sheludko authored
which used to treat off-heap slots as on-heap ones and implement code target visitation in derived visitor classes. Bug: v8:8518 Change-Id: I477bf3a4a8a3de0c67bc15e2e20d8ecee6493da8 Reviewed-on: https://chromium-review.googlesource.com/c/1367745Reviewed-by:
Ulan Degenbaev <ulan@chromium.org> Reviewed-by:
Jakob Gruber <jgruber@chromium.org> Commit-Queue: Igor Sheludko <ishell@chromium.org> Cr-Commit-Position: refs/heads/master@{#58121}
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- 07 Dec, 2018 1 commit
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Igor Sheludko authored
(mostly for roots, handles and stack locations). Thi CL also changes RootVisitor interface to use FullObjectSlots instead of ObjectSlots. Bug: v8:8518 Change-Id: I217c7ae176387a8c64f4754e62339727bdb36018 Reviewed-on: https://chromium-review.googlesource.com/c/1366035Reviewed-by:
Ulan Degenbaev <ulan@chromium.org> Reviewed-by:
Ross McIlroy <rmcilroy@chromium.org> Reviewed-by:
Yang Guo <yangguo@chromium.org> Commit-Queue: Igor Sheludko <ishell@chromium.org> Cr-Commit-Position: refs/heads/master@{#58091}
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- 12 Nov, 2018 1 commit
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Jakob Kummerow authored
Bug: v8:3770 Change-Id: I413ce57f7fa91cef2445995ca22650477f92b0df Reviewed-on: https://chromium-review.googlesource.com/c/1321892Reviewed-by:
Dan Elphick <delphick@chromium.org> Reviewed-by:
Michael Starzinger <mstarzinger@chromium.org> Reviewed-by:
Hannes Payer <hpayer@chromium.org> Reviewed-by:
Leszek Swirski <leszeks@chromium.org> Reviewed-by:
Jakob Gruber <jgruber@chromium.org> Commit-Queue: Jakob Kummerow <jkummerow@chromium.org> Cr-Commit-Position: refs/heads/master@{#57445}
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- 24 Oct, 2018 1 commit
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Jakob Kummerow authored
as part of the continuing quest to get rid of Object*/Object**. This is a fairly mechanical replacement of Object**/MaybeObject** with wrapper objects carrying the same data. No change in behavior is intended. Overloaded operators are provided to minimize code churn. Bug: v8:3770 Cq-Include-Trybots: luci.chromium.try:linux_chromium_rel_ng Change-Id: I76cee82b8bf2dd80a1b66f09dd2bb2b65038eeb7 Reviewed-on: https://chromium-review.googlesource.com/c/1287889 Commit-Queue: Jakob Kummerow <jkummerow@chromium.org> Reviewed-by:
Hannes Payer <hpayer@chromium.org> Reviewed-by:
Yang Guo <yangguo@chromium.org> Reviewed-by:
Ross McIlroy <rmcilroy@chromium.org> Reviewed-by:
Ulan Degenbaev <ulan@chromium.org> Cr-Commit-Position: refs/heads/master@{#56920}
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- 16 Oct, 2018 2 commits
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Dan Elphick authored
In preparation for sharing RO_SPACE between all Isolates within a process, this first pulls RO_SPACE out of the Startup snapshot and puts it in its own ReadOnly snapshot. The snapshot is first populated with the read-only roots. After that the StartupSerializer serializes as before but starting from the first mutable root. References to objects in the ReadOnly snapshot that aren't themselves roots are added to a new cache called ReadOnlyObjectCache which functions like the PartialSnapshotCache but lives in the ReadOnlySerializer rather than the StartupSerializer. These cache entries are referenced using a new bytecode: ReadOnlyObjectCache. (To make room for this, the ApiReference bytecode has been moved). To reduce code duplication, the StartupSerializer has been refactored to create a new base class RootSerializer, which ReadOnlySerializer also subclasses. The base class is responsible primarily for keeping track of already serialized roots and visiting the roots. Cq-Include-Trybots: luci.chromium.try:linux_chromium_rel_ng Change-Id: Iff26042886130ae22eccf2e11b35f6f226f4a792 Bug: v8:8191 Reviewed-on: https://chromium-review.googlesource.com/c/1244676 Commit-Queue: Dan Elphick <delphick@chromium.org> Reviewed-by:
Ulan Degenbaev <ulan@chromium.org> Reviewed-by:
Jakob Gruber <jgruber@chromium.org> Cr-Commit-Position: refs/heads/master@{#56681}
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Dan Elphick authored
Change Heap::IterateStrongRoots to never iterate the read-only roots. In doing so remove VISIT_ALL_BUT_READ_ONLY and VISIT_ONLY_STRONG_FOR_SERIALIZATION. All such uses should now use VISIT_ALL and VISIT_ONLY_STRONG. Where ReadOnlyRoots iteration is required, this adds ReadOnlyRoots(isolate)->Iterate() at the call site. Add new begin, end, strong_mutable_roots_begin and strong_mutable_roots_end methods to RootsTable and try and make the existing uses a little more consistent. Bug: v8:8191 Change-Id: Ie9d0f9e5186db418428e2fafd38432b0bd879daa Reviewed-on: https://chromium-review.googlesource.com/c/1278500 Commit-Queue: Dan Elphick <delphick@chromium.org> Reviewed-by:
Ulan Degenbaev <ulan@chromium.org> Reviewed-by:
Jakob Gruber <jgruber@chromium.org> Cr-Commit-Position: refs/heads/master@{#56672}
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- 19 Sep, 2018 2 commits
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Marja Hölttä authored
Unification: now BodyDescriptor deals with all weakness types. This doesn't replace the weak list pointers with in-place weak references, since it would cause extra work: we anyway recreate the lists after GC, so we shouldn't track them at all during GC. BUG=v8:7308 Change-Id: Ifb2f573d3e7ee311136b59e185cc659487c9cab3 Reviewed-on: https://chromium-review.googlesource.com/1229894Reviewed-by:
Michael Lippautz <mlippautz@chromium.org> Commit-Queue: Marja Hölttä <marja@chromium.org> Cr-Commit-Position: refs/heads/master@{#56030}
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Florian Sattler authored
Fixing clang-tidy warning. Bug: v8:8015 Change-Id: Ibc5a81aea25f797e90db891e90b2977f27e13990 Reviewed-on: https://chromium-review.googlesource.com/1224410 Commit-Queue: Florian Sattler <sattlerf@google.com> Reviewed-by:
Yang Guo <yangguo@chromium.org> Cr-Commit-Position: refs/heads/master@{#56015}
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- 11 Sep, 2018 1 commit
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Clemens Hammacher authored
The macro has been deprecated since 2016, and it keeps confusing me, so let's just remove it completely from the code base. R=leszeks@chromium.org TBR=mstarzinger@chromium.org, verwaest@chromium.org, jgruber@chromium.org Bug: v8:8015 Change-Id: Ibe1122fd9d2624bc94873d9c51dc8499c54a04fd Reviewed-on: https://chromium-review.googlesource.com/1209322Reviewed-by:
Clemens Hammacher <clemensh@chromium.org> Reviewed-by:
Michael Starzinger <mstarzinger@chromium.org> Reviewed-by:
Jakob Gruber <jgruber@chromium.org> Reviewed-by:
Leszek Swirski <leszeks@chromium.org> Commit-Queue: Clemens Hammacher <clemensh@chromium.org> Cr-Commit-Position: refs/heads/master@{#55779}
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- 30 Apr, 2018 1 commit
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Georgia Kouveli authored
This includes the following changes: - Limit code space to 128 MB. - Use direct branches wherever possible. - Where not possible, continue using load literal followed by an indirect branch. - Sort RelocInfo by target_address_address for the serializer, since mixing load literal instructions and branch instructions messes up that order. - Ensure we always wipe out targets in the serializer (not just for the snapshot) in order to be able to distinguish between constant pool entries and branch instructions. Change-Id: I1a1029ce2a5f72a3a94802daf267d14a42c7c790 Reviewed-on: https://chromium-review.googlesource.com/939175Reviewed-by:
Clemens Hammacher <clemensh@chromium.org> Reviewed-by:
Jaroslav Sevcik <jarin@chromium.org> Reviewed-by:
Leszek Swirski <leszeks@chromium.org> Reviewed-by:
Yang Guo <yangguo@chromium.org> Commit-Queue: Georgia Kouveli <georgia.kouveli@arm.com> Cr-Commit-Position: refs/heads/master@{#52885}
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- 19 Mar, 2018 1 commit
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jgruber authored
This is a reland of f1b1ec70 Original change's description: > [builtins] Remove off-heap builtins from the snapshot > > This CL is the final major step towards shipping off-heap-safe builtins > embedded into the binary. > > Prior to snapshot serialization, we now: > * create the embedded blob containing off-heap instruction streams, > * use that to generate embedded.cc (containing embedded binary data), > * replace off-heap-safe builtins with trampolines, > * and serialize those into the final snapshot. > > The new RelocInfo::OFF_HEAP_TARGET kind is used to fix up trampoline > targets on deserialization. > > Bug: v8:6666 > Change-Id: Ib07aea9e3bd7ecdec42291c1388b3a7453ea96ce > Reviewed-on: https://chromium-review.googlesource.com/950775 > Commit-Queue: Jakob Gruber <jgruber@chromium.org> > Reviewed-by: Michael Starzinger <mstarzinger@chromium.org> > Reviewed-by: Yang Guo <yangguo@chromium.org> > Cr-Commit-Position: refs/heads/master@{#51960} TBR=yangguo@chromium.org,mstarzinger@chromium.org Cq-Include-Trybots: luci.v8.try:v8_mac64_dbg,v8_mac64_rel Bug: v8:6666 Change-Id: Id9954af3c8195754ff3658c4603858904fcf88c4 Reviewed-on: https://chromium-review.googlesource.com/964481 Commit-Queue: Jakob Gruber <jgruber@chromium.org> Reviewed-by:
Jakob Gruber <jgruber@chromium.org> Cr-Commit-Position: refs/heads/master@{#52006}
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- 15 Mar, 2018 2 commits
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Jakob Gruber authored
This reverts commit f1b1ec70. Reason for revert: Tentative revert for https://logs.chromium.org/v/?s=chromium%2Fbb%2Fclient.v8.fyi%2FV8-Blink_Mac%2F13696%2F%2B%2Frecipes%2Fsteps%2Fwebkit_unit_tests%2F0%2Fstdout Original change's description: > [builtins] Remove off-heap builtins from the snapshot > > This CL is the final major step towards shipping off-heap-safe builtins > embedded into the binary. > > Prior to snapshot serialization, we now: > * create the embedded blob containing off-heap instruction streams, > * use that to generate embedded.cc (containing embedded binary data), > * replace off-heap-safe builtins with trampolines, > * and serialize those into the final snapshot. > > The new RelocInfo::OFF_HEAP_TARGET kind is used to fix up trampoline > targets on deserialization. > > Bug: v8:6666 > Change-Id: Ib07aea9e3bd7ecdec42291c1388b3a7453ea96ce > Reviewed-on: https://chromium-review.googlesource.com/950775 > Commit-Queue: Jakob Gruber <jgruber@chromium.org> > Reviewed-by: Michael Starzinger <mstarzinger@chromium.org> > Reviewed-by: Yang Guo <yangguo@chromium.org> > Cr-Commit-Position: refs/heads/master@{#51960} TBR=yangguo@chromium.org,mstarzinger@chromium.org,jgruber@chromium.org Change-Id: I58dd4bf9a99d37416855b48807150e1dd9ecd9e8 No-Presubmit: true No-Tree-Checks: true No-Try: true Bug: v8:6666 Reviewed-on: https://chromium-review.googlesource.com/964363Reviewed-by:
Jakob Gruber <jgruber@chromium.org> Commit-Queue: Jakob Gruber <jgruber@chromium.org> Cr-Commit-Position: refs/heads/master@{#51962}
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jgruber authored
This CL is the final major step towards shipping off-heap-safe builtins embedded into the binary. Prior to snapshot serialization, we now: * create the embedded blob containing off-heap instruction streams, * use that to generate embedded.cc (containing embedded binary data), * replace off-heap-safe builtins with trampolines, * and serialize those into the final snapshot. The new RelocInfo::OFF_HEAP_TARGET kind is used to fix up trampoline targets on deserialization. Bug: v8:6666 Change-Id: Ib07aea9e3bd7ecdec42291c1388b3a7453ea96ce Reviewed-on: https://chromium-review.googlesource.com/950775 Commit-Queue: Jakob Gruber <jgruber@chromium.org> Reviewed-by:
Michael Starzinger <mstarzinger@chromium.org> Reviewed-by:
Yang Guo <yangguo@chromium.org> Cr-Commit-Position: refs/heads/master@{#51960}
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- 05 Mar, 2018 3 commits
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Marja Hölttä authored
Implement in-place weak reference handling in GC. Turn FeedbackVector::optimized_code_or_smi into an in-place weak reference (this is the only in-place weak reference at this point). (See bug for design doc.) BUG=v8:7308 TBR=yangguo@chromium.org Cq-Include-Trybots: luci.chromium.try:linux_chromium_rel_ng Change-Id: I16d65dc768f10ed431252e23a0df07bee9063534 Reviewed-on: https://chromium-review.googlesource.com/948493 Commit-Queue: Marja Hölttä <marja@chromium.org> Reviewed-by:
Ulan Degenbaev <ulan@chromium.org> Cr-Commit-Position: refs/heads/master@{#51731}
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Sigurd Schneider authored
This reverts commit 07c1e641. Reason for revert: Breaks TSAN build. https://build.chromium.org/p/client.v8/builders/V8%20Linux64%20TSAN/builds/19784 Original change's description: > [in-place weak refs] Add in-place weak references & migrate one WeakCell to it. > > Implement in-place weak reference handling in GC. > > Turn FeedbackVector::optimized_code_or_smi into an in-place weak reference (this > is the only in-place weak reference at this point). > > (See bug for design doc.) > > BUG=v8:7308 > > Cq-Include-Trybots: luci.chromium.try:linux_chromium_rel_ng;master.tryserver.chromium.linux:linux_chromium_rel_ng > Change-Id: I0f9f992cb4ee0457c40b7c868317dfb607bfb906 > Reviewed-on: https://chromium-review.googlesource.com/873638 > Commit-Queue: Marja Hölttä <marja@chromium.org> > Reviewed-by: Michael Lippautz <mlippautz@chromium.org> > Reviewed-by: Igor Sheludko <ishell@chromium.org> > Reviewed-by: Ulan Degenbaev <ulan@chromium.org> > Reviewed-by: Benedikt Meurer <bmeurer@chromium.org> > Reviewed-by: Yang Guo <yangguo@chromium.org> > Reviewed-by: Hannes Payer <hpayer@chromium.org> > Cr-Commit-Position: refs/heads/master@{#51722} TBR=ulan@chromium.org,marja@chromium.org,yangguo@chromium.org,hpayer@chromium.org,mlippautz@chromium.org,ishell@chromium.org,bmeurer@chromium.org Change-Id: I75a7dd99fbfd2f5922a6c4d2000bea2adfdeac11 No-Presubmit: true No-Tree-Checks: true No-Try: true Bug: v8:7308 Cq-Include-Trybots: luci.chromium.try:linux_chromium_rel_ng;master.tryserver.chromium.linux:linux_chromium_rel_ng Reviewed-on: https://chromium-review.googlesource.com/948522Reviewed-by:
Sigurd Schneider <sigurds@chromium.org> Commit-Queue: Sigurd Schneider <sigurds@chromium.org> Cr-Commit-Position: refs/heads/master@{#51723}
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Marja Hölttä authored
Implement in-place weak reference handling in GC. Turn FeedbackVector::optimized_code_or_smi into an in-place weak reference (this is the only in-place weak reference at this point). (See bug for design doc.) BUG=v8:7308 Cq-Include-Trybots: luci.chromium.try:linux_chromium_rel_ng;master.tryserver.chromium.linux:linux_chromium_rel_ng Change-Id: I0f9f992cb4ee0457c40b7c868317dfb607bfb906 Reviewed-on: https://chromium-review.googlesource.com/873638 Commit-Queue: Marja Hölttä <marja@chromium.org> Reviewed-by:
Michael Lippautz <mlippautz@chromium.org> Reviewed-by:
Igor Sheludko <ishell@chromium.org> Reviewed-by:
Ulan Degenbaev <ulan@chromium.org> Reviewed-by:
Benedikt Meurer <bmeurer@chromium.org> Reviewed-by:
Yang Guo <yangguo@chromium.org> Reviewed-by:
Hannes Payer <hpayer@chromium.org> Cr-Commit-Position: refs/heads/master@{#51722}
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- 19 Feb, 2018 1 commit
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Ulan Degenbaev authored
This replaces three passes over the roots with a single pass. This also removes root synchronization logic. The GC subroot index is computed from the |root| parameter of the visit method. The new |description| parameter is used as an edge name. Bug: chromium:811842 Change-Id: I03a9215d56b54b3eb5f7bc8b32d5b22ad091c68b Reviewed-on: https://chromium-review.googlesource.com/916781Reviewed-by:
Alexei Filippov <alph@chromium.org> Commit-Queue: Ulan Degenbaev <ulan@chromium.org> Cr-Commit-Position: refs/heads/master@{#51350}
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- 14 Feb, 2018 1 commit
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Ulan Degenbaev authored
The description will be used to annotate roots in the heap snapshot. Bug: chromium:811842 Cq-Include-Trybots: master.tryserver.chromium.linux:linux_chromium_rel_ng Change-Id: Ic5c9a89d1921cabddb06783f08ba63740e72820d Reviewed-on: https://chromium-review.googlesource.com/916564Reviewed-by:
Michael Lippautz <mlippautz@chromium.org> Commit-Queue: Ulan Degenbaev <ulan@chromium.org> Cr-Commit-Position: refs/heads/master@{#51286}
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- 26 Oct, 2017 2 commits
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Michael Starzinger authored
R=ulan@chromium.org Change-Id: I141daeffde426a75293ffa0565c867d73a81cbfc Reviewed-on: https://chromium-review.googlesource.com/738776Reviewed-by:
Ulan Degenbaev <ulan@chromium.org> Commit-Queue: Michael Starzinger <mstarzinger@chromium.org> Cr-Commit-Position: refs/heads/master@{#48968}
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Michael Starzinger authored
This move the {Code::next_code_link} into the data container, making it possible to mutate the field even when {Code} objects are protected. It also introduces a dedicated body descriptor for the container allowing for tagged fields to be part of the container. R=ulan@chromium.org BUG=v8:6792 Change-Id: I56a9d53e8bb35aeb0a7036e3abf3ebee1ba2928d Reviewed-on: https://chromium-review.googlesource.com/738184 Commit-Queue: Michael Starzinger <mstarzinger@chromium.org> Reviewed-by:
Ulan Degenbaev <ulan@chromium.org> Reviewed-by:
Hannes Payer <hpayer@chromium.org> Cr-Commit-Position: refs/heads/master@{#48966}
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- 13 Oct, 2017 1 commit
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Marja Hölttä authored
There was a helpful TODO telling where it should live. BUG=v8:5402,v8:6921 Change-Id: Id9022c72c9e7de8d76ea0db964217b766299195d Reviewed-on: https://chromium-review.googlesource.com/718337Reviewed-by:
Ulan Degenbaev <ulan@chromium.org> Commit-Queue: Marja Hölttä <marja@chromium.org> Cr-Commit-Position: refs/heads/master@{#48524}
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- 28 Aug, 2017 1 commit
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Michael Lippautz authored
Bug: Change-Id: I857f8b3f992faf950917060b3fe705bdd45c3ada Reviewed-on: https://chromium-review.googlesource.com/638339Reviewed-by:
Ulan Degenbaev <ulan@chromium.org> Commit-Queue: Michael Lippautz <mlippautz@chromium.org> Cr-Commit-Position: refs/heads/master@{#47653}
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