eb385e02b7
When Android 12+, `ASystemFontIterator_open` doesn't read font configuration XML file directly to support font update. So it causes that first call of it becomes too slow. So I would like to call it on background thread at start up to initialize internal data in Android. This fox improves 50-100ms on `gfxPlatform::Init`. Gecko already uses similar to it for macOS and Windows (DirectWrite). Differential Revision: https://phabricator.services.mozilla.com/D224896
107 lines
2.7 KiB
C++
107 lines
2.7 KiB
C++
/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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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 "AndroidSystemFontIterator.h"
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#include "mozilla/Assertions.h"
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#include "nsDebug.h"
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#include <dlfcn.h>
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namespace mozilla {
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_ASystemFontIterator_open AndroidSystemFontIterator::sSystemFontIterator_open =
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nullptr;
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_ASystemFontIterator_next AndroidSystemFontIterator::sSystemFontIterator_next =
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nullptr;
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_ASystemFontIterator_close
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AndroidSystemFontIterator::sSystemFontIterator_close = nullptr;
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_AFont_getFontFilePath AndroidFont::sFont_getFontFilePath = nullptr;
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_AFont_close AndroidFont::sFont_close = nullptr;
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AndroidSystemFontIterator::~AndroidSystemFontIterator() {
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if (!sSystemFontIterator_open) {
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return;
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}
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if (!mIterator) {
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return;
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}
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sSystemFontIterator_close(mIterator);
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}
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bool AndroidSystemFontIterator::Init() {
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if (!sSystemFontIterator_open) {
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void* handle = dlopen("libandroid.so", RTLD_LAZY | RTLD_LOCAL);
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MOZ_ASSERT(handle);
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sSystemFontIterator_open =
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(_ASystemFontIterator_open)dlsym(handle, "ASystemFontIterator_open");
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sSystemFontIterator_next =
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(_ASystemFontIterator_next)dlsym(handle, "ASystemFontIterator_next");
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sSystemFontIterator_close =
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(_ASystemFontIterator_close)dlsym(handle, "ASystemFontIterator_close");
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AndroidFont::sFont_getFontFilePath =
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(_AFont_getFontFilePath)dlsym(handle, "AFont_getFontFilePath");
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AndroidFont::sFont_close = (_AFont_close)dlsym(handle, "AFont_close");
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if (NS_WARN_IF(!sSystemFontIterator_open) ||
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NS_WARN_IF(!sSystemFontIterator_next) ||
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NS_WARN_IF(!sSystemFontIterator_close) ||
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NS_WARN_IF(!AndroidFont::sFont_getFontFilePath) ||
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NS_WARN_IF(!AndroidFont::sFont_close)) {
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sSystemFontIterator_open = nullptr;
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return false;
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}
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}
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mIterator = sSystemFontIterator_open();
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return true;
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}
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Maybe<AndroidFont> AndroidSystemFontIterator::Next() {
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if (NS_WARN_IF(!sSystemFontIterator_open)) {
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return Nothing();
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}
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if (!mIterator) {
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return Nothing();
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}
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void* font = sSystemFontIterator_next(mIterator);
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if (!font) {
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sSystemFontIterator_close(mIterator);
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mIterator = nullptr;
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return Nothing();
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}
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return Some(AndroidFont(font));
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}
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AndroidFont::~AndroidFont() {
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if (NS_WARN_IF(!sFont_close)) {
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return;
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}
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if (!mFont) {
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return;
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}
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sFont_close(mFont);
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}
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const char* AndroidFont::GetFontFilePath() {
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if (NS_WARN_IF(!sFont_getFontFilePath) || NS_WARN_IF(!mFont)) {
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return nullptr;
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}
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return sFont_getFontFilePath(mFont);
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}
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} // namespace mozilla
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