mirror of
https://github.com/RGBCube/serenity
synced 2025-07-25 20:17:44 +00:00
LibJS+Clients: Add JS::VM object, separate Heap from Interpreter
Taking a big step towards a world of multiple global object, this patch adds a new JS::VM object that houses the JS::Heap. This means that the Heap moves out of Interpreter, and the same Heap can now be used by multiple Interpreters, and can also outlive them. The VM keeps a stack of Interpreter pointers. We push/pop on this stack when entering/exiting execution with a given Interpreter. This allows us to make this change without disturbing too much of the existing code. There is still a 1-to-1 relationship between Interpreter and the global object. This will change in the future. Ultimately, the goal here is to make Interpreter a transient object that only needs to exist while you execute some code. Getting there will take a lot more work though. :^) Note that in LibWeb, the global JS::VM is called main_thread_vm(), to distinguish it from future worker VM's.
This commit is contained in:
parent
c6ae0c41d9
commit
1c43442be4
13 changed files with 218 additions and 27 deletions
|
@ -47,8 +47,8 @@
|
|||
|
||||
namespace JS {
|
||||
|
||||
Heap::Heap(Interpreter& interpreter)
|
||||
: m_interpreter(interpreter)
|
||||
Heap::Heap(VM& vm)
|
||||
: m_vm(vm)
|
||||
{
|
||||
}
|
||||
|
||||
|
@ -57,6 +57,11 @@ Heap::~Heap()
|
|||
collect_garbage(CollectionType::CollectEverything);
|
||||
}
|
||||
|
||||
Interpreter& Heap::interpreter()
|
||||
{
|
||||
return vm().interpreter();
|
||||
}
|
||||
|
||||
Cell* Heap::allocate_cell(size_t size)
|
||||
{
|
||||
if (should_collect_on_every_allocation()) {
|
||||
|
@ -100,7 +105,8 @@ void Heap::collect_garbage(CollectionType collection_type, bool print_report)
|
|||
|
||||
void Heap::gather_roots(HashTable<Cell*>& roots)
|
||||
{
|
||||
m_interpreter.gather_roots({}, roots);
|
||||
if (auto* interpreter = vm().interpreter_if_exists())
|
||||
interpreter->gather_roots({}, roots);
|
||||
|
||||
gather_conservative_roots(roots);
|
||||
|
||||
|
|
Loading…
Add table
Add a link
Reference in a new issue