This CL moves heap related information (namely instance sizes and
allocation stats) out of the [ClassTable] into a [SharedClassTable].
Both classes are always in sync (i.e. they have the same number of entries).
This CL also changes GC related code to start using the size information
from the new [SharedClassTable].
In a futher step we will move the heap as well as this shared class
table out of the [Isolate] and into [IsolateGroup].
Issue https://github.com/dart-lang/sdk/issues/36097
Change-Id: Id54a89c9251ad3bbc13e60d32dc4f7bcc7f1d805
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/116064
Commit-Queue: Martin Kustermann <kustermann@google.com>
Reviewed-by: Ryan Macnak <rmacnak@google.com>
Until now it was possible to register classes with a default size (16 bytes on 64-bit)
and later on change the size for the cid.
This CL changes this to ensure the size information in the class table
for a given cid is either 0 or the final instance size (and adds an
ASSERT for it)
Issue https://github.com/dart-lang/sdk/issues/36097
Change-Id: I94c61c6a1566c13dec7b9eb80c9ae0dadf0e6b6a
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/115861
Commit-Queue: Martin Kustermann <kustermann@google.com>
Reviewed-by: Ryan Macnak <rmacnak@google.com>
Removes all ICData from bytecode, avoding the need to clear bytecode when CIDs are reassigned.
Change-Id: I185f9f7acef6a32ef46adb73c6d2652bc1231bab
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/114053
Commit-Queue: Ryan Macnak <rmacnak@google.com>
Reviewed-by: Régis Crelier <regis@google.com>
Reviewed-by: Alexander Markov <alexmarkov@google.com>
Saves 10ms from non-empty reloads of Flutter Gallery.
Change-Id: If9a1f9970d562f8fd7996de875dfe231350efaa9
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/113282
Reviewed-by: Alexander Markov <alexmarkov@google.com>
Commit-Queue: Ryan Macnak <rmacnak@google.com>
This reverts commit 9906819fb7.
Reason for revert: Follow up CLs are more complicated than I thought, so I don't want to leave it in an inconsistent state.
Original change's description:
> Remove kernel isolate API from the public dart_api.h
>
> This is the first step in moving the kernel isolate out
> of the VM and into the standalone embedder.
>
> Bug: https://github.com/dart-lang/sdk/issues/33433
> Change-Id: Ie8d9ac1c27efe2661f0441b75275119966d197af
> Reviewed-on: https://dart-review.googlesource.com/c/84829
> Commit-Queue: Liam Appelbe <liama@google.com>
> Reviewed-by: Ryan Macnak <rmacnak@google.com>
TBR=rmacnak@google.com,liama@google.com
# Not skipping CQ checks because original CL landed > 1 day ago.
Bug: https://github.com/dart-lang/sdk/issues/33433
Change-Id: Iaf753c210e918df167364b50ee823b2557896628
Reviewed-on: https://dart-review.googlesource.com/c/87623
Reviewed-by: Liam Appelbe <liama@google.com>
Reviewed-by: Zach Anderson <zra@google.com>
Commit-Queue: Liam Appelbe <liama@google.com>
This is the same code as the previous commit, but it needs a fix
for issue #34953 to land first.
Change-Id: Id586f5e8a5ee498716e58ff44bb8a344822f73df
Reviewed-on: https://dart-review.googlesource.com/c/81840
Reviewed-by: Ryan Macnak <rmacnak@google.com>
Commit-Queue: Zach Anderson <zra@google.com>
This reverts commits
- 47c55605b8
- c362e4862f.
Reason for revert:
Very likely the cause for flaky crashes where mutator and BG compiler are accessing the program info class cache concurrently without proper locking.
Issue https://github.com/dart-lang/sdk/issues/34939
Original change's description:
> Reland: [vm] Add a library and class cache to KernelProgramInfo
>
> Relands with locks to protect the caches.
>
> Original message:
> Also create fewer handles in the KernelLoader.
>
> GenKernelKernelReadAllBytecode improves a further
> 15-20% after removing the timeline event argument
> in the bytecode reader.
>
> Change-Id: I6d796986a7773938e528271033385465e4f13468
> Reviewed-on: https://dart-review.googlesource.com/c/79380
> Reviewed-by: Ryan Macnak <rmacnak@google.com>
> Commit-Queue: Zach Anderson <zra@google.com>
TBR=rmacnak@google.com,alexmarkov@google.com,zra@google.com,asiva@google.com
# Not skipping CQ checks because original CL landed > 1 day ago.
Change-Id: Ib242ecc9ece8a233441fc4d5512e4a20ce3e0d11
Reviewed-on: https://dart-review.googlesource.com/c/81601
Commit-Queue: Martin Kustermann <kustermann@google.com>
Reviewed-by: Vyacheslav Egorov <vegorov@google.com>
Reviewed-by: Martin Kustermann <kustermann@google.com>
- Fix leak of IsolateReloadContext.
- Fix leak kernel compilation request arguments.
- Fix leak kernel compilation result errors in reload harness.
- Fix leak of class table when a schema changes but there are no instances.
- Fix leak of kernel::Reader during inlining bailout.
Bug: https://github.com/dart-lang/sdk/issues/32187
Bug: https://github.com/dart-lang/sdk/issues/28349
Change-Id: I9ccc65e018c30a3254e928a43b9727ae8d9314d6
Reviewed-on: https://dart-review.googlesource.com/49547
Reviewed-by: Ben Konyi <bkonyi@google.com>
Commit-Queue: Ryan Macnak <rmacnak@google.com>
This reverts commit deed9b0653.
Reason for revert: Debug Windows failures
Original change's description:
> [vm, reload] Fix leak when shape changes but there are no instances.
>
> Fix leak of reload context when used by the test harness.
>
> Bug: https://github.com/dart-lang/sdk/issues/28349
> Change-Id: I2d1bda5537befddbd1e615b355654a9fefc08273
> Reviewed-on: https://dart-review.googlesource.com/49321
> Reviewed-by: Ben Konyi <bkonyi@google.com>
> Commit-Queue: Ryan Macnak <rmacnak@google.com>
TBR=bkonyi@google.com,rmacnak@google.com
Change-Id: I6f351645e1c9af4c2cbf1bbffdc339b68a11dbd5
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: https://github.com/dart-lang/sdk/issues/28349
Reviewed-on: https://dart-review.googlesource.com/49620
Reviewed-by: Ryan Macnak <rmacnak@google.com>
Commit-Queue: Ryan Macnak <rmacnak@google.com>
- Enabled incremental compiler in the dart frontend for the command-line VM
- Added method to update in-memory file system with in-memory sources provided by tests
Change-Id: Ica26b7235383185dbb6b4b41064193d432dfcba0
Reviewed-on: https://dart-review.googlesource.com/36126
Commit-Queue: Ben Konyi <bkonyi@google.com>
Reviewed-by: Siva Annamalai <asiva@google.com>
Improves the space overhead of compaction from O(size of live objects) to O(number of live objects).
Future work includes:
- a smaller, faster representation the forwarding table via a bitmap of used allocation units
- sorting class sizes off-heap to allow sliding classes
- running forwarding in parallel
Removes unnecessary sweep from evacuating compactor.
Change-Id: If0991bfb75573201c6e8feed142ca0cc69fccab4
Bug: https://github.com/dart-lang/sdk/issues/30978
Reviewed-on: https://dart-review.googlesource.com/15988
Commit-Queue: Ryan Macnak <rmacnak@google.com>
Reviewed-by: Erik Corry <erikcorry@google.com>
- [x] Add arguments `rootLibUri` and `packagesUri` to the reload service rpc. These allow the uri of the root library and the .packages files to be overridden.
- [x] When pairing libraries during reload, support the base url changing.
R=rmacnak@google.com
Review URL: https://codereview.chromium.org/2512483002 .
- [x] When performing a reload, track new fields with initializing expressions.
- [x] After a reload, run the initializing expressions for each new field on all instances of the class.
- [x] Unit tests (heart beat, throwing, and syntax errors)
- [x] Add some utility methods to Function, Field, and Script.
- [x] Fix a major bug in instance morphing and class hierarchy traversal.
Fixes#27666
BUG=
R=rmacnak@google.com
Review URL: https://codereview.chromium.org/2489723003 .
i.e. #ifndef VM_WHATEVER -> #ifndef RUNTIME_VM_WHATEVER
This lets us remove a hack from the PRESUBMIT.py script that existed
for reasons that are no longer valid, and sets us up to add some
presubmit checks for the GN build.
R=asiva@google.com, rmacnak@google.com
Review URL: https://codereview.chromium.org/2450713004 .
- [x] Rationalize the load failure code path.
- [x] Remove support for reload to be aborted via a callback.
- [x] If a reload fails due to an unwind error, ignore it as the isolate is dead anyway.
- [x] Move more allocations into the zone.
Review URL: https://codereview.chromium.org/2208553002 .
- [x] Use a single outer zone for all zone allocations done during a reload. This fixes an issue where we were allocating objects in different zones that were destroyed before we expected them to be.
- [x] Rename some methods.
- [x] Made most methods on IsolateReloadContext private.
R=rmacnak@google.com
Review URL: https://codereview.chromium.org/2201093002 .
We now check all of the scripts which make up a library. If any
script is modified, then we consider that library to be modified. We
also consider any library which imports a modified library to be
modified. To propagate this info efficiently, we build and discard
the imported-by graph when beginning a reload.
The embedder must provide a FileModifiedCallback in order to support
the detection of modified scripts.
In order to detect changes to package: libraries, we have modified the
embedder interface to provide the resolved url when possible, so that
we don't need to re-resolve package uris when checking for reload.
This change is incompatible and all embedders will need to be updated.
We now support a "force" flag when reloading sources. This causes all
libraries to be reloaded regardless of whether the underlying scripts
have been updated.
Closes#26919R=johnmccutchan@google.com
Review URL: https://codereview.chromium.org/2186423002 .
Delete the reload context after the last use. My first attempt did not work
with our unit test framework for reload cc tests. When running unit tests
the reload context is needed for longer, and deleted separately.
BUG=#26895
R=johnmccutchan@google.com
Review URL: https://codereview.chromium.org/2164703003 .
When a script is not in the vm heap, we now cache compile time
constants on the script object itself. During isolate reload we may
have both an old and a new version of a script being compiled at the
same time and they need to cache their constants separately. This
also means that compile time constants from old scripts can be
collected when the script is collected, which is good.
When a script is in the vm heap, we continue to use the old system of
employing a shared per-isolate cache stored in the object store.
Closes#26833
BUG=
R=fschneider@google.com, johnmccutchan@google.com
Review URL: https://codereview.chromium.org/2126393003 .
- [x] When allocating a library private key during reload, give the reload context an opportunity to provide a private key from the original library.
- [x] In identity reload mode, ensure that we pair all libraries as well as classes.
R=turnidge@google.com
Review URL: https://codereview.chromium.org/2054833002 .
This is a cut of the work that Todd and I collaborated on in the reload branch.
In this CL, we've dropped the loader port hacks, in other words, on stack reloading in the standalone embedder does not work yet.
- [x] Support for hot reloading of isolate source code
- [x] Unit test harness and many tests
- [x] Service protocol and Observatory support
- [x] Product build does not include support for hot reloading.
R=rmacnak@google.com
Review URL: https://codereview.chromium.org/1965823002 .
