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67 lines
1.8 KiB
C++
67 lines
1.8 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this file,
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef mozilla_dom_workerinternals_JSSettings_h
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#define mozilla_dom_workerinternals_JSSettings_h
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#include <stdint.h>
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#include "jsapi.h"
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#include "js/ContextOptions.h"
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#include "js/GCAPI.h"
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#include "mozilla/Maybe.h"
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#include "nsString.h"
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#include "nsTArray.h"
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namespace mozilla {
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namespace dom {
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namespace workerinternals {
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// Random unique constant to facilitate JSPrincipal debugging
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const uint32_t kJSPrincipalsDebugToken = 0x7e2df9d2;
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struct JSSettings {
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struct JSGCSetting {
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JSGCParamKey key;
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// Nothing() represents the default value, the result of calling
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// JS_ResetGCParameter.
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Maybe<uint32_t> value;
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// For the IndexOf call below.
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bool operator==(JSGCParamKey k) const { return key == k; }
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};
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JS::RealmOptions chromeRealmOptions;
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JS::RealmOptions contentRealmOptions;
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CopyableTArray<JSGCSetting> gcSettings;
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JS::ContextOptions contextOptions;
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#ifdef JS_GC_ZEAL
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uint8_t gcZeal = 0;
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uint32_t gcZealFrequency = 0;
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#endif
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// Returns whether there was a change in the setting.
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bool ApplyGCSetting(JSGCParamKey aKey, Maybe<uint32_t> aValue) {
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size_t index = gcSettings.IndexOf(aKey);
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if (index == gcSettings.NoIndex) {
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gcSettings.AppendElement(JSGCSetting{aKey, aValue});
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return true;
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}
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if (gcSettings[index].value != aValue) {
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gcSettings[index].value = aValue;
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return true;
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}
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return false;
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}
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};
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} // namespace workerinternals
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} // namespace dom
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} // namespace mozilla
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#endif // mozilla_dom_workerinternals_JSSettings_h
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