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63 lines
1.4 KiB
C++
63 lines
1.4 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
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "Preferences.h"
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#include "mozilla/Assertions.h"
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#include "mozilla/Vector.h"
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namespace mozilla {
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namespace gfx {
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static PreferenceAccess* sAccess = nullptr;
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struct Int32Pref
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{
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const char* name;
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int32_t* varPtr;
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};
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static Vector<Int32Pref>& Int32Prefs()
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{
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static Vector<Int32Pref>* sInt32Prefs = new Vector<Int32Pref>();
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return *sInt32Prefs;
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}
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/* static */
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int32_t
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PreferenceAccess::RegisterLivePref(const char* aName, int32_t* aVar,
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int32_t aDefault)
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{
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if (!Int32Prefs().append(Int32Pref{ aName, aVar })) {
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MOZ_CRASH();
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}
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return aDefault;
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}
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/* static */
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void
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PreferenceAccess::SetAccess(PreferenceAccess* aAccess)
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{
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sAccess = aAccess;
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if (!sAccess) {
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return;
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}
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#if defined(DEBUG)
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static uint32_t sProvideAccessCount;
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MOZ_ASSERT(!sProvideAccessCount++,
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"ProvideAccess must only be called with non-nullptr once.");
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#endif
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for (Int32Pref pref : Int32Prefs()) {
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sAccess->LivePref(pref.name, pref.varPtr, *pref.varPtr);
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}
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Int32Prefs().clearAndFree();
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}
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} // namespace gfx
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} // namespace mozilla
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