The Tor Browser: js/src/vm/Runtime-inl.h@6474c204b198

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

     1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-

     2  * vim: set ts=8 sts=4 et sw=4 tw=99:

     3  * This Source Code Form is subject to the terms of the Mozilla Public

     4  * License, v. 2.0. If a copy of the MPL was not distributed with this

     5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

     7 #ifndef vm_Runtime_inl_h

     8 #define vm_Runtime_inl_h

    10 #include "vm/Runtime.h"

    12 #include "jscompartment.h"

    14 #include "vm/Probes.h"

    16 #include "jsgcinlines.h"

    18 namespace js {

    20 inline bool

    21 NewObjectCache::lookupProto(const Class *clasp, JSObject *proto, gc::AllocKind kind, EntryIndex *pentry)

    22 {

    23     JS_ASSERT(!proto->is<GlobalObject>());

    24     return lookup(clasp, proto, kind, pentry);

    25 }

    27 inline bool

    28 NewObjectCache::lookupGlobal(const Class *clasp, js::GlobalObject *global, gc::AllocKind kind, EntryIndex *pentry)

    29 {

    30     return lookup(clasp, global, kind, pentry);

    31 }

    33 inline void

    34 NewObjectCache::fillGlobal(EntryIndex entry, const Class *clasp, js::GlobalObject *global, gc::AllocKind kind, JSObject *obj)

    35 {

    36     //JS_ASSERT(global == obj->getGlobal());

    37     return fill(entry, clasp, global, kind, obj);

    38 }

    40 template <AllowGC allowGC>

    41 inline JSObject *

    42 NewObjectCache::newObjectFromHit(JSContext *cx, EntryIndex entry_, js::gc::InitialHeap heap)

    43 {

    44     // The new object cache does not account for metadata attached via callbacks.

    45     JS_ASSERT(!cx->compartment()->hasObjectMetadataCallback());

    47     JS_ASSERT(unsigned(entry_) < mozilla::ArrayLength(entries));

    48     Entry *entry = &entries[entry_];

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

    52     // Do an end run around JSObject::type() to avoid doing AutoUnprotectCell

    53     // on the templateObj, which is not a GC thing and can't use runtimeFromAnyThread.

    54     types::TypeObject *type = templateObj->type_;

    56     if (type->shouldPreTenure())

    57         heap = gc::TenuredHeap;

    59     if (cx->runtime()->upcomingZealousGC())

    60         return nullptr;

    62     // Trigger an identical allocation to the one that notified us of OOM

    63     // so that we trigger the right kind of GC automatically.

    64     if (allowGC) {

    65         mozilla::DebugOnly<JSObject *> obj =

    66             js::gc::AllocateObjectForCacheHit<allowGC>(cx, entry->kind, heap);

    67         JS_ASSERT(!obj);

    68         return nullptr;

    69     }

    71     JS_ASSERT(allowGC == NoGC);

    72     JSObject *obj = js::gc::AllocateObjectForCacheHit<NoGC>(cx, entry->kind, heap);

    73     if (obj) {

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

    75         probes::CreateObject(cx, obj);

    76         return obj;

    77     }

    79     return nullptr;

    80 }

    82 }  /* namespace js */

    84 #endif /* vm_Runtime_inl_h */

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