From 26a029d407be480d791972afb5975cf62c9360a6 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Fri, 19 Apr 2024 02:47:55 +0200 Subject: Adding upstream version 124.0.1. Signed-off-by: Daniel Baumann --- js/src/wasm/WasmRealm.h | 84 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 84 insertions(+) create mode 100644 js/src/wasm/WasmRealm.h (limited to 'js/src/wasm/WasmRealm.h') diff --git a/js/src/wasm/WasmRealm.h b/js/src/wasm/WasmRealm.h new file mode 100644 index 0000000000..6ad7c435b9 --- /dev/null +++ b/js/src/wasm/WasmRealm.h @@ -0,0 +1,84 @@ +/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- + * vim: set ts=8 sts=2 et sw=2 tw=80: + * + * Copyright 2016 Mozilla Foundation + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#ifndef wasm_realm_h +#define wasm_realm_h + +#include "js/TracingAPI.h" + +#include "wasm/WasmTypeDecls.h" + +namespace js { + +class WasmTagObject; + +namespace wasm { + +// wasm::Realm lives in JS::Realm and contains the wasm-related per-realm state. +// wasm::Realm tracks every live instance in the realm and must be notified, via +// registerInstance(), of any new WasmInstanceObject. + +class Realm { + JSRuntime* runtime_; + InstanceVector instances_; + + public: + explicit Realm(JSRuntime* rt); + ~Realm(); + + // Before a WasmInstanceObject can be considered fully constructed and + // valid, it must be registered with the Realm. If this method fails, + // an error has been reported and the instance object must be abandoned. + // After a successful registration, an Instance must call + // unregisterInstance() before being destroyed. + + bool registerInstance(JSContext* cx, Handle instanceObj); + void unregisterInstance(Instance& instance); + + // Return a vector of all live instances in the realm. The lifetime of + // these Instances is determined by their owning WasmInstanceObject. + // Note that accessing instances()[i]->object() triggers a read barrier + // since instances() is effectively a weak list. + + const InstanceVector& instances() const { return instances_; } + + // Ensure all Instances in this Realm have profiling labels created. + + void ensureProfilingLabels(bool profilingEnabled); + + // about:memory reporting + + void addSizeOfExcludingThis(mozilla::MallocSizeOf mallocSizeOf, + size_t* realmTables); +}; + +// Interrupt all running wasm Instances that have been registered with +// wasm::Realms in the given JSContext. + +extern void InterruptRunningCode(JSContext* cx); + +// After a wasm Instance sees an interrupt request and calls +// CheckForInterrupt(), it should call RunningCodeInterrupted() to clear the +// interrupt request for all wasm Instances to avoid spurious trapping. + +void ResetInterruptState(JSContext* cx); + +} // namespace wasm +} // namespace js + +#endif // wasm_realm_h -- cgit v1.2.3