/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
* vim: set ts=8 sts=2 et sw=2 tw=80:
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef vm_Realm_inl_h
#define vm_Realm_inl_h
#include "vm/Realm.h"
#include "gc/Barrier.h"
#include "gc/Marking.h"
#include "vm/GlobalObject.h"
#include "vm/JSContext-inl.h"
inline void JS::Realm::initGlobal(js::GlobalObject& global) {
MOZ_ASSERT(global.realm() ==
this);
MOZ_ASSERT(!global_);
global_.set(&global);
}
js::GlobalObject* JS::Realm::maybeGlobal()
const {
MOZ_ASSERT_IF(global_, global_->realm() ==
this);
return global_;
}
inline bool JS::Realm::hasLiveGlobal()
const {
// The global is swept by traceWeakGlobalEdge when we start sweeping a zone
// group. This frees the GlobalObjectData, so the realm must live at least as
// long as the global.
MOZ_ASSERT_IF(global_, !js::gc::IsAboutToBeFinalized(global_));
return bool(global_);
}
inline bool JS::Realm::hasInitializedGlobal()
const {
return hasLiveGlobal() && !initializingGlobal_;
}
inline bool JS::Realm::marked()
const {
// The Realm survives in the following cases:
// - its global is live
// - it has been entered (to ensure we don't destroy the Realm while we're
// allocating its global)
// - it was allocated after the start of an incremental GC (as there may be
// pointers to it from other GC things)
return hasLiveGlobal() || hasBeenEnteredIgnoringJit() ||
allocatedDuringIncrementalGC_;
}
/* static */ inline js::ObjectRealm& js::ObjectRealm::get(const JSObject* obj) {
// Note: obj might be a CCW if we're accessing ObjectRealm::enumerators.
// CCWs here are fine because we always return the same ObjectRealm for a
// particular (CCW) object.
return obj->maybeCCWRealm()->objects_;
}
template <
typename T>
js::AutoRealm::AutoRealm(JSContext* cx,
const T& target)
: cx_(cx), origin_(cx->realm()) {
cx_->enterRealmOf(target);
}
// Protected constructor that bypasses assertions in enterRealmOf.
js::AutoRealm::AutoRealm(JSContext* cx, JS::Realm* target)
: cx_(cx), origin_(cx->realm()) {
cx_->enterRealm(target);
}
js::AutoRealm::~AutoRealm() { cx_->leaveRealm(origin_); }
js::AutoFunctionOrCurrentRealm::AutoFunctionOrCurrentRealm(JSContext* cx,
HandleObject fun) {
JS::Realm* realm = JS::GetFunctionRealm(cx, fun);
if (!realm) {
cx->clearPendingException();
return;
}
// Enter the function's realm.
ar_.emplace(cx, realm);
}
js::AutoAllocInAtomsZone::AutoAllocInAtomsZone(JSContext* cx)
: cx_(cx), origin_(cx->realm()) {
cx_->enterAtomsZone();
}
js::AutoAllocInAtomsZone::~AutoAllocInAtomsZone() {
cx_->leaveAtomsZone(origin_);
}
js::AutoMaybeLeaveAtomsZone::AutoMaybeLeaveAtomsZone(JSContext* cx)
: cx_(cx), wasInAtomsZone_(cx->zone() && cx->zone()->isAtomsZone()) {
if (wasInAtomsZone_) {
cx_->leaveAtomsZone(nullptr);
}
}
js::AutoMaybeLeaveAtomsZone::~AutoMaybeLeaveAtomsZone() {
if (wasInAtomsZone_) {
cx_->enterAtomsZone();
}
}
js::AutoRealmUnchecked::AutoRealmUnchecked(JSContext* cx, JS::Realm* target)
: AutoRealm(cx, target) {}
#endif /* vm_Realm_inl_h */
