js/src/vm/Caches-inl.h
author Sebastian Hengst <archaeopteryx@coole-files.de>
Mon, 31 Oct 2016 19:59:07 +0100
changeset 320276 1aa20bcbb80e1014e4d01057f7d52269b0c2d908
parent 311715 45aba91445a23c7ac14c88e84e575e99afdefe50
permissions -rw-r--r--
Merge m-c to fx-team. r=merge a=merge

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
 * vim: set ts=8 sts=4 et sw=4 tw=99:
 * 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_Caches_inl_h
#define vm_Caches_inl_h

#include "vm/Caches.h"

#include "jscompartment.h"

#include "gc/Allocator.h"
#include "gc/GCTrace.h"
#include "vm/Probes.h"

#include "jsobjinlines.h"

namespace js {

inline bool
NewObjectCache::lookupProto(const Class* clasp, JSObject* proto, gc::AllocKind kind, EntryIndex* pentry)
{
    MOZ_ASSERT(!proto->is<GlobalObject>());
    return lookup(clasp, proto, kind, pentry);
}

inline bool
NewObjectCache::lookupGlobal(const Class* clasp, GlobalObject* global, gc::AllocKind kind, EntryIndex* pentry)
{
    return lookup(clasp, global, kind, pentry);
}

inline void
NewObjectCache::fillGlobal(EntryIndex entry, const Class* clasp, GlobalObject* global,
                           gc::AllocKind kind, NativeObject* obj)
{
    //MOZ_ASSERT(global == obj->getGlobal());
    return fill(entry, clasp, global, kind, obj);
}

inline NativeObject*
NewObjectCache::newObjectFromHit(JSContext* cx, EntryIndex entryIndex, gc::InitialHeap heap)
{
    MOZ_ASSERT(unsigned(entryIndex) < mozilla::ArrayLength(entries));
    Entry* entry = &entries[entryIndex];

    NativeObject* templateObj = reinterpret_cast<NativeObject*>(&entry->templateObject);

    // Do an end run around JSObject::group() to avoid doing AutoUnprotectCell
    // on the templateObj, which is not a GC thing and can't use runtimeFromAnyThread.
    ObjectGroup* group = templateObj->group_;

    MOZ_ASSERT(!group->hasUnanalyzedPreliminaryObjects());

    if (group->shouldPreTenure())
        heap = gc::TenuredHeap;

    if (cx->runtime()->gc.upcomingZealousGC())
        return nullptr;

    NativeObject* obj = static_cast<NativeObject*>(Allocate<JSObject, NoGC>(cx, entry->kind, 0,
                                                                            heap, group->clasp()));
    if (!obj)
        return nullptr;

    copyCachedToObject(obj, templateObj, entry->kind);

    if (group->clasp()->shouldDelayMetadataBuilder())
        cx->compartment()->setObjectPendingMetadata(cx, obj);
    else
        obj = static_cast<NativeObject*>(SetNewObjectMetadata(cx, obj));

    probes::CreateObject(cx, obj);
    gc::TraceCreateObject(obj);
    return obj;
}

}  /* namespace js */

#endif /* vm_Caches_inl_h */