Martin Kustermann
dae308461c
This CL:
* Moves [Heap]/[SharedClassTable] from [Isolate] to [IsolateGroup], which
will make all isolates in the group use the same heap. The GC will use
the shared class table for object size information.
* Adds support for entering/leaving an isolate group as a helper thread
(e.g. via [Thread::EnterIsolateGroupAsHelper]). The current active
isolate group can be accessed via TLS `IsolateGroup::Current()` or
`Thread::isolate_group_`. When entering as a helper thread there will be
no current isolate.
* Changes the GC to use the above mechanism and ensures GC works without
a currently active isolate. The GC will use information purely available via
[IsolateGroup]. The GC will iterate all isolates within an isolate
group e.g. for scanning roots.
* Makes spawning of new isolates start in their own isolate group.
Once the isolate is fully functional it's heap will be merged into
the original isolate group
* Moves ApiState, containing persistent and weak persistent handles,
from [Isolate] to [IsolateGroup], plus adds appropriate locking.
Issue https://github.com/dart-lang/sdk/issues/36097
Change-Id: Ia8e1d8aa78750e8400864200f4825395a182c004
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/126646
Commit-Queue: Martin Kustermann <kustermann@google.com>
Reviewed-by: Ryan Macnak <rmacnak@google.com>
35 lines
869 B
C++
35 lines
869 B
C++
// Copyright (c) 2019, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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#ifndef RUNTIME_VM_THREAD_STACK_RESOURCE_H_
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#define RUNTIME_VM_THREAD_STACK_RESOURCE_H_
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#include "vm/allocation.h"
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#include "vm/globals.h"
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namespace dart {
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class Isolate;
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class IsolateGroup;
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class ThreadState;
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class Thread;
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class ThreadStackResource : public StackResource {
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public:
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explicit ThreadStackResource(Thread* T)
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: StackResource(reinterpret_cast<ThreadState*>(T)) {}
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~ThreadStackResource();
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Thread* thread() const {
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return reinterpret_cast<Thread*>(StackResource::thread());
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}
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Isolate* isolate() const;
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IsolateGroup* isolate_group() const;
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};
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} // namespace dart
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#endif // RUNTIME_VM_THREAD_STACK_RESOURCE_H_
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