RGBCube/serenity
1
Fork 0
mirror of https://github.com/RGBCube/serenity synced 2025-05-31 09:48:11 +00:00
Code Issues Activity Actions

LibJS: Add ConservativeVector<T>

Browse source 
This works very similarly to MarkedVector<T>, but instead of expecting
T to be Value or a GC-allocated pointer type, T can be anything.
Every pointer-sized value in the vector's storage will be checked during
conservative root scanning.

In other words, this allows you to put something like this in a
ConservativeVector<Foo> and it will be protected from GC:

    struct Foo {
        i64 number;
        Value some_value;
        GCPtr<Object> some_object;
    };
This commit is contained in:
Andreas Kling 2024-02-22 13:18:31 +01:00
parent cbecd096c2
commit 4bbb0a5c35
8 changed files with 126 additions and 1 deletions
Download patch file Download diff file Expand all files Collapse all files

6
Userland/Libraries/LibJS/Heap/Heap.cpp
View file

@ -369,6 +369,12 @@ __attribute__((no_sanitize("address"))) void Heap::gather_conservative_roots(Has
}
}
for (auto& vector : m_conservative_vectors) {
for (auto possible_value : vector.possible_values()) {
add_possible_value(possible_pointers, possible_value, HeapRoot { .type = HeapRoot::Type::ConservativeVector }, min_block_address, max_block_address);
}
}
HashTable<HeapBlock*> all_live_heap_blocks;
for_each_block([&](auto& block) {
all_live_heap_blocks.set(&block);