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/* -*- 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 mozilla_dom_workerinternals_JSSettings_h
#define mozilla_dom_workerinternals_JSSettings_h
#include <stdint.h>
#include "js/ContextOptions.h"
#include "js/GCAPI.h"
#include "js/RealmOptions.h"
#include "mozilla/Maybe.h"
#include "nsString.h"
#include "nsTArray.h"
namespace mozilla::dom::workerinternals {
// Random unique constant to facilitate JSPrincipal debugging
const uint32_t kJSPrincipalsDebugToken = 0x7e2df9d2;
struct JSSettings {
struct JSGCSetting {
JSGCParamKey key;
// Nothing() represents the default value, the result of calling
// JS_ResetGCParameter.
Maybe<uint32_t> value;
// For the IndexOf call below.
bool operator==(JSGCParamKey k) const { return key == k; }
};
JS::RealmOptions chromeRealmOptions;
JS::RealmOptions contentRealmOptions;
CopyableTArray<JSGCSetting> gcSettings;
JS::ContextOptions contextOptions;
#ifdef JS_GC_ZEAL
uint8_t gcZeal = 0;
uint32_t gcZealFrequency = 0;
#endif
// Returns whether there was a change in the setting.
bool ApplyGCSetting(JSGCParamKey aKey, Maybe<uint32_t> aValue) {
size_t index = gcSettings.IndexOf(aKey);
if (index == gcSettings.NoIndex) {
gcSettings.AppendElement(JSGCSetting{aKey, aValue});
return true;
}
if (gcSettings[index].value != aValue) {
gcSettings[index].value = aValue;
return true;
}
return false;
}
};
} // namespace mozilla::dom::workerinternals
#endif // mozilla_dom_workerinternals_JSSettings_h
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