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gecko/gfx/thebes/gfxPlatformFontList.cpp
Ehsan Akhgari 6220f98ec6 Backed out 9 changesets (bug 943660, bug 936964) because of ASAN use-after-free crashes on browser-chrome and mochitest-other 
Backed out changeset 85486c4aa3d8 (bug 936964)
Backed out changeset 25312eb71998 (bug 936964)
Backed out changeset 6dbb8333960c (bug 936964)
Backed out changeset da6465ad476f (bug 936964)
Backed out changeset a87ffc992f38 (bug 936964)
Backed out changeset 4ae3a61182db (bug 936964)
Backed out changeset 34e9c3137804 (bug 936964)
Backed out changeset fd1459e71585 (bug 936964)
Backed out changeset 3e8a701d8bdc (bug 943660)

Landed on a CLOSED TREE

--HG--
rename : content/canvas/src/WebGLMemoryTracker.h => content/canvas/src/WebGLMemoryReporterWrapper.h
2013-11-27 20:05:00 -05:00

876 lines
29 KiB
C++
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/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
* 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/. */
#ifdef MOZ_LOGGING
#define FORCE_PR_LOG /* Allow logging in the release build */
#endif
#include "prlog.h"
#include "gfxPlatformFontList.h"
#include "nsUnicharUtils.h"
#include "nsUnicodeRange.h"
#include "nsUnicodeProperties.h"
#include "mozilla/Attributes.h"
#include "mozilla/Likely.h"
#include "mozilla/MemoryReporting.h"
#include "mozilla/Preferences.h"
#include "mozilla/Telemetry.h"
#include "mozilla/TimeStamp.h"
#include "mozilla/gfx/2D.h"
using namespace mozilla;
#ifdef PR_LOGGING
#define LOG_FONTLIST(args) PR_LOG(gfxPlatform::GetLog(eGfxLog_fontlist), \
PR_LOG_DEBUG, args)
#define LOG_FONTLIST_ENABLED() PR_LOG_TEST( \
gfxPlatform::GetLog(eGfxLog_fontlist), \
PR_LOG_DEBUG)
#endif // PR_LOGGING
gfxPlatformFontList *gfxPlatformFontList::sPlatformFontList = nullptr;
// prefs for the font info loader
#define FONT_LOADER_FAMILIES_PER_SLICE_PREF "gfx.font_loader.families_per_slice"
#define FONT_LOADER_DELAY_PREF "gfx.font_loader.delay"
#define FONT_LOADER_INTERVAL_PREF "gfx.font_loader.interval"
static const char* kObservedPrefs[] = {
"font.",
"font.name-list.",
"intl.accept_languages", // hmmmm...
nullptr
};
class gfxFontListPrefObserver MOZ_FINAL : public nsIObserver {
public:
NS_DECL_ISUPPORTS
NS_DECL_NSIOBSERVER
};
static gfxFontListPrefObserver* gFontListPrefObserver = nullptr;
NS_IMPL_ISUPPORTS1(gfxFontListPrefObserver, nsIObserver)
NS_IMETHODIMP
gfxFontListPrefObserver::Observe(nsISupports *aSubject,
const char *aTopic,
const PRUnichar *aData)
{
NS_ASSERTION(!strcmp(aTopic, NS_PREFBRANCH_PREFCHANGE_TOPIC_ID), "invalid topic");
// XXX this could be made to only clear out the cache for the prefs that were changed
// but it probably isn't that big a deal.
gfxPlatformFontList::PlatformFontList()->ClearPrefFonts();
gfxFontCache::GetCache()->AgeAllGenerations();
return NS_OK;
}
NS_MEMORY_REPORTER_MALLOC_SIZEOF_FUN(FontListMallocSizeOf)
gfxPlatformFontList::MemoryReporter::MemoryReporter()
: MemoryMultiReporter("font-list")
{}
NS_IMETHODIMP
gfxPlatformFontList::MemoryReporter::CollectReports
(nsIMemoryReporterCallback* aCb,
nsISupports* aClosure)
{
FontListSizes sizes;
sizes.mFontListSize = 0;
sizes.mFontTableCacheSize = 0;
sizes.mCharMapsSize = 0;
gfxPlatformFontList::PlatformFontList()->AddSizeOfIncludingThis(&FontListMallocSizeOf,
&sizes);
aCb->Callback(EmptyCString(),
NS_LITERAL_CSTRING("explicit/gfx/font-list"),
nsIMemoryReporter::KIND_HEAP, nsIMemoryReporter::UNITS_BYTES,
sizes.mFontListSize,
NS_LITERAL_CSTRING("Memory used to manage the list of font families and faces."),
aClosure);
aCb->Callback(EmptyCString(),
NS_LITERAL_CSTRING("explicit/gfx/font-charmaps"),
nsIMemoryReporter::KIND_HEAP, nsIMemoryReporter::UNITS_BYTES,
sizes.mCharMapsSize,
NS_LITERAL_CSTRING("Memory used to record the character coverage of individual fonts."),
aClosure);
if (sizes.mFontTableCacheSize) {
aCb->Callback(EmptyCString(),
NS_LITERAL_CSTRING("explicit/gfx/font-tables"),
nsIMemoryReporter::KIND_HEAP, nsIMemoryReporter::UNITS_BYTES,
sizes.mFontTableCacheSize,
NS_LITERAL_CSTRING("Memory used for cached font metrics and layout tables."),
aClosure);
}
return NS_OK;
}
gfxPlatformFontList::gfxPlatformFontList(bool aNeedFullnamePostscriptNames)
: mFontFamilies(100), mOtherFamilyNames(30),
mPrefFonts(10), mBadUnderlineFamilyNames(10), mSharedCmaps(16),
mStartIndex(0), mIncrement(1), mNumFamilies(0)
{
mOtherFamilyNamesInitialized = false;
if (aNeedFullnamePostscriptNames) {
mExtraNames = new ExtraNames();
}
mFaceNamesInitialized = false;
LoadBadUnderlineList();
// pref changes notification setup
NS_ASSERTION(!gFontListPrefObserver,
"There has been font list pref observer already");
gFontListPrefObserver = new gfxFontListPrefObserver();
NS_ADDREF(gFontListPrefObserver);
Preferences::AddStrongObservers(gFontListPrefObserver, kObservedPrefs);
RegisterStrongMemoryReporter(new MemoryReporter());
}
gfxPlatformFontList::~gfxPlatformFontList()
{
mSharedCmaps.Clear();
NS_ASSERTION(gFontListPrefObserver, "There is no font list pref observer");
Preferences::RemoveObservers(gFontListPrefObserver, kObservedPrefs);
NS_RELEASE(gFontListPrefObserver);
}
nsresult
gfxPlatformFontList::InitFontList()
{
mFontFamilies.Clear();
mOtherFamilyNames.Clear();
mOtherFamilyNamesInitialized = false;
if (mExtraNames) {
mExtraNames->mFullnames.Clear();
mExtraNames->mPostscriptNames.Clear();
}
mFaceNamesInitialized = false;
mPrefFonts.Clear();
mReplacementCharFallbackFamily = nullptr;
CancelLoader();
// initialize ranges of characters for which system-wide font search should be skipped
mCodepointsWithNoFonts.reset();
mCodepointsWithNoFonts.SetRange(0,0x1f); // C0 controls
mCodepointsWithNoFonts.SetRange(0x7f,0x9f); // C1 controls
sPlatformFontList = this;
return NS_OK;
}
void
gfxPlatformFontList::GenerateFontListKey(const nsAString& aKeyName, nsAString& aResult)
{
aResult = aKeyName;
ToLowerCase(aResult);
}
void
gfxPlatformFontList::InitOtherFamilyNames()
{
mOtherFamilyNamesInitialized = true;
Telemetry::AutoTimer<Telemetry::FONTLIST_INITOTHERFAMILYNAMES> timer;
// iterate over all font families and read in other family names
mFontFamilies.Enumerate(gfxPlatformFontList::InitOtherFamilyNamesProc, this);
}
PLDHashOperator
gfxPlatformFontList::InitOtherFamilyNamesProc(nsStringHashKey::KeyType aKey,
nsRefPtr<gfxFontFamily>& aFamilyEntry,
void* userArg)
{
gfxPlatformFontList *fc = static_cast<gfxPlatformFontList*>(userArg);
aFamilyEntry->ReadOtherFamilyNames(fc);
return PL_DHASH_NEXT;
}
void
gfxPlatformFontList::InitFaceNameLists()
{
mFaceNamesInitialized = true;
// iterate over all font families and read in other family names
Telemetry::AutoTimer<Telemetry::FONTLIST_INITFACENAMELISTS> timer;
mFontFamilies.Enumerate(gfxPlatformFontList::InitFaceNameListsProc, this);
}
PLDHashOperator
gfxPlatformFontList::InitFaceNameListsProc(nsStringHashKey::KeyType aKey,
nsRefPtr<gfxFontFamily>& aFamilyEntry,
void* userArg)
{
gfxPlatformFontList *fc = static_cast<gfxPlatformFontList*>(userArg);
aFamilyEntry->ReadFaceNames(fc, fc->NeedFullnamePostscriptNames());
return PL_DHASH_NEXT;
}
void
gfxPlatformFontList::PreloadNamesList()
{
nsAutoTArray<nsString, 10> preloadFonts;
gfxFontUtils::GetPrefsFontList("font.preload-names-list", preloadFonts);
uint32_t numFonts = preloadFonts.Length();
for (uint32_t i = 0; i < numFonts; i++) {
nsAutoString key;
GenerateFontListKey(preloadFonts[i], key);
// only search canonical names!
gfxFontFamily *familyEntry = mFontFamilies.GetWeak(key);
if (familyEntry) {
familyEntry->ReadOtherFamilyNames(this);
}
}
}
void
gfxPlatformFontList::SetFixedPitch(const nsAString& aFamilyName)
{
gfxFontFamily *family = FindFamily(aFamilyName);
if (!family) return;
family->FindStyleVariations();
nsTArray<nsRefPtr<gfxFontEntry> >& fontlist = family->GetFontList();
uint32_t i, numFonts = fontlist.Length();
for (i = 0; i < numFonts; i++) {
fontlist[i]->mFixedPitch = 1;
}
}
void
gfxPlatformFontList::LoadBadUnderlineList()
{
nsAutoTArray<nsString, 10> blacklist;
gfxFontUtils::GetPrefsFontList("font.blacklist.underline_offset", blacklist);
uint32_t numFonts = blacklist.Length();
for (uint32_t i = 0; i < numFonts; i++) {
nsAutoString key;
GenerateFontListKey(blacklist[i], key);
mBadUnderlineFamilyNames.PutEntry(key);
}
}
bool
gfxPlatformFontList::ResolveFontName(const nsAString& aFontName, nsAString& aResolvedFontName)
{
gfxFontFamily *family = FindFamily(aFontName);
if (family) {
aResolvedFontName = family->Name();
return true;
}
return false;
}
struct FontListData {
FontListData(nsIAtom *aLangGroup,
const nsACString& aGenericFamily,
nsTArray<nsString>& aListOfFonts) :
mLangGroup(aLangGroup), mGenericFamily(aGenericFamily),
mListOfFonts(aListOfFonts) {}
nsIAtom *mLangGroup;
const nsACString& mGenericFamily;
nsTArray<nsString>& mListOfFonts;
};
PLDHashOperator
gfxPlatformFontList::HashEnumFuncForFamilies(nsStringHashKey::KeyType aKey,
nsRefPtr<gfxFontFamily>& aFamilyEntry,
void *aUserArg)
{
FontListData *data = static_cast<FontListData*>(aUserArg);
// use the first variation for now. This data should be the same
// for all the variations and should probably be moved up to
// the Family
gfxFontStyle style;
style.language = data->mLangGroup;
bool needsBold;
nsRefPtr<gfxFontEntry> aFontEntry = aFamilyEntry->FindFontForStyle(style, needsBold);
NS_ASSERTION(aFontEntry, "couldn't find any font entry in family");
if (!aFontEntry)
return PL_DHASH_NEXT;
/* skip symbol fonts */
if (aFontEntry->IsSymbolFont())
return PL_DHASH_NEXT;
if (aFontEntry->SupportsLangGroup(data->mLangGroup) &&
aFontEntry->MatchesGenericFamily(data->mGenericFamily)) {
nsAutoString localizedFamilyName;
aFamilyEntry->LocalizedName(localizedFamilyName);
data->mListOfFonts.AppendElement(localizedFamilyName);
}
return PL_DHASH_NEXT;
}
void
gfxPlatformFontList::GetFontList(nsIAtom *aLangGroup,
const nsACString& aGenericFamily,
nsTArray<nsString>& aListOfFonts)
{
FontListData data(aLangGroup, aGenericFamily, aListOfFonts);
mFontFamilies.Enumerate(gfxPlatformFontList::HashEnumFuncForFamilies, &data);
aListOfFonts.Sort();
aListOfFonts.Compact();
}
struct FontFamilyListData {
FontFamilyListData(nsTArray<nsRefPtr<gfxFontFamily> >& aFamilyArray)
: mFamilyArray(aFamilyArray)
{}
static PLDHashOperator AppendFamily(nsStringHashKey::KeyType aKey,
nsRefPtr<gfxFontFamily>& aFamilyEntry,
void *aUserArg)
{
FontFamilyListData *data = static_cast<FontFamilyListData*>(aUserArg);
data->mFamilyArray.AppendElement(aFamilyEntry);
return PL_DHASH_NEXT;
}
nsTArray<nsRefPtr<gfxFontFamily> >& mFamilyArray;
};
void
gfxPlatformFontList::GetFontFamilyList(nsTArray<nsRefPtr<gfxFontFamily> >& aFamilyArray)
{
FontFamilyListData data(aFamilyArray);
mFontFamilies.Enumerate(FontFamilyListData::AppendFamily, &data);
}
gfxFontEntry*
gfxPlatformFontList::SystemFindFontForChar(const uint32_t aCh,
int32_t aRunScript,
const gfxFontStyle* aStyle)
{
gfxFontEntry* fontEntry = nullptr;
// is codepoint with no matching font? return null immediately
if (mCodepointsWithNoFonts.test(aCh)) {
return nullptr;
}
// Try to short-circuit font fallback for U+FFFD, used to represent
// encoding errors: just use cached family from last time U+FFFD was seen.
// This helps speed up pages with lots of encoding errors, binary-as-text,
// etc.
if (aCh == 0xFFFD && mReplacementCharFallbackFamily) {
bool needsBold; // ignored in the system fallback case
fontEntry =
mReplacementCharFallbackFamily->FindFontForStyle(*aStyle,
needsBold);
// this should never fail, as we must have found U+FFFD in order to set
// mReplacementCharFallbackFamily at all, but better play it safe
if (fontEntry && fontEntry->TestCharacterMap(aCh)) {
return fontEntry;
}
}
TimeStamp start = TimeStamp::Now();
// search commonly available fonts
bool common = true;
gfxFontFamily *fallbackFamily = nullptr;
fontEntry = CommonFontFallback(aCh, aRunScript, aStyle, &fallbackFamily);
// if didn't find a font, do system-wide fallback (except for specials)
uint32_t cmapCount = 0;
if (!fontEntry) {
common = false;
fontEntry = GlobalFontFallback(aCh, aRunScript, aStyle, cmapCount,
&fallbackFamily);
}
TimeDuration elapsed = TimeStamp::Now() - start;
#ifdef PR_LOGGING
PRLogModuleInfo *log = gfxPlatform::GetLog(eGfxLog_textrun);
if (MOZ_UNLIKELY(log)) {
uint32_t unicodeRange = FindCharUnicodeRange(aCh);
int32_t script = mozilla::unicode::GetScriptCode(aCh);
PR_LOG(log, PR_LOG_WARNING,\
("(textrun-systemfallback-%s) char: u+%6.6x "
"unicode-range: %d script: %d match: [%s]"
" time: %dus cmaps: %d\n",
(common ? "common" : "global"), aCh,
unicodeRange, script,
(fontEntry ? NS_ConvertUTF16toUTF8(fontEntry->Name()).get() :
"<none>"),
int32_t(elapsed.ToMicroseconds()),
cmapCount));
}
#endif
// no match? add to set of non-matching codepoints
if (!fontEntry) {
mCodepointsWithNoFonts.set(aCh);
} else if (aCh == 0xFFFD && fontEntry && fallbackFamily) {
mReplacementCharFallbackFamily = fallbackFamily;
}
// track system fallback time
static bool first = true;
int32_t intElapsed = int32_t(first ? elapsed.ToMilliseconds() :
elapsed.ToMicroseconds());
Telemetry::Accumulate((first ? Telemetry::SYSTEM_FONT_FALLBACK_FIRST :
Telemetry::SYSTEM_FONT_FALLBACK),
intElapsed);
first = false;
// track the script for which fallback occurred (incremented one make it
// 1-based)
Telemetry::Accumulate(Telemetry::SYSTEM_FONT_FALLBACK_SCRIPT, aRunScript + 1);
return fontEntry;
}
PLDHashOperator
gfxPlatformFontList::FindFontForCharProc(nsStringHashKey::KeyType aKey, nsRefPtr<gfxFontFamily>& aFamilyEntry,
void *userArg)
{
GlobalFontMatch *data = static_cast<GlobalFontMatch*>(userArg);
// evaluate all fonts in this family for a match
aFamilyEntry->FindFontForChar(data);
return PL_DHASH_NEXT;
}
#define NUM_FALLBACK_FONTS 8
gfxFontEntry*
gfxPlatformFontList::CommonFontFallback(const uint32_t aCh,
int32_t aRunScript,
const gfxFontStyle* aMatchStyle,
gfxFontFamily** aMatchedFamily)
{
nsAutoTArray<const char*,NUM_FALLBACK_FONTS> defaultFallbacks;
uint32_t i, numFallbacks;
gfxPlatform::GetPlatform()->GetCommonFallbackFonts(aCh, aRunScript,
defaultFallbacks);
numFallbacks = defaultFallbacks.Length();
for (i = 0; i < numFallbacks; i++) {
nsAutoString familyName;
const char *fallbackFamily = defaultFallbacks[i];
familyName.AppendASCII(fallbackFamily);
gfxFontFamily *fallback =
gfxPlatformFontList::PlatformFontList()->FindFamily(familyName);
if (!fallback)
continue;
gfxFontEntry *fontEntry;
bool needsBold; // ignored in the system fallback case
// use first font in list that supports a given character
fontEntry = fallback->FindFontForStyle(*aMatchStyle, needsBold);
if (fontEntry && fontEntry->TestCharacterMap(aCh)) {
*aMatchedFamily = fallback;
return fontEntry;
}
}
return nullptr;
}
gfxFontEntry*
gfxPlatformFontList::GlobalFontFallback(const uint32_t aCh,
int32_t aRunScript,
const gfxFontStyle* aMatchStyle,
uint32_t& aCmapCount,
gfxFontFamily** aMatchedFamily)
{
// otherwise, try to find it among local fonts
GlobalFontMatch data(aCh, aRunScript, aMatchStyle);
// iterate over all font families to find a font that support the character
mFontFamilies.Enumerate(gfxPlatformFontList::FindFontForCharProc, &data);
aCmapCount = data.mCmapsTested;
*aMatchedFamily = data.mMatchedFamily;
return data.mBestMatch;
}
#ifdef XP_WIN
#include <windows.h>
// crude hack for using when monitoring process
static void LogRegistryEvent(const wchar_t *msg)
{
HKEY dummyKey;
HRESULT hr;
wchar_t buf[512];
wsprintfW(buf, L" log %s", msg);
hr = RegOpenKeyExW(HKEY_LOCAL_MACHINE, buf, 0, KEY_READ, &dummyKey);
if (SUCCEEDED(hr)) {
RegCloseKey(dummyKey);
}
}
#endif
gfxFontFamily*
gfxPlatformFontList::FindFamily(const nsAString& aFamily)
{
nsAutoString key;
gfxFontFamily *familyEntry;
GenerateFontListKey(aFamily, key);
NS_ASSERTION(mFontFamilies.Count() != 0, "system font list was not initialized correctly");
// lookup in canonical (i.e. English) family name list
if ((familyEntry = mFontFamilies.GetWeak(key))) {
return familyEntry;
}
// lookup in other family names list (mostly localized names)
if ((familyEntry = mOtherFamilyNames.GetWeak(key)) != nullptr) {
return familyEntry;
}
// name not found and other family names not yet fully initialized so
// initialize the rest of the list and try again. this is done lazily
// since reading name table entries is expensive.
// although ASCII localized family names are possible they don't occur
// in practice so avoid pulling in names at startup
if (!mOtherFamilyNamesInitialized && !IsASCII(aFamily)) {
InitOtherFamilyNames();
if ((familyEntry = mOtherFamilyNames.GetWeak(key)) != nullptr) {
return familyEntry;
}
}
return nullptr;
}
gfxFontEntry*
gfxPlatformFontList::FindFontForFamily(const nsAString& aFamily, const gfxFontStyle* aStyle, bool& aNeedsBold)
{
gfxFontFamily *familyEntry = FindFamily(aFamily);
aNeedsBold = false;
if (familyEntry)
return familyEntry->FindFontForStyle(*aStyle, aNeedsBold);
return nullptr;
}
bool
gfxPlatformFontList::GetPrefFontFamilyEntries(eFontPrefLang aLangGroup, nsTArray<nsRefPtr<gfxFontFamily> > *array)
{
return mPrefFonts.Get(uint32_t(aLangGroup), array);
}
void
gfxPlatformFontList::SetPrefFontFamilyEntries(eFontPrefLang aLangGroup, nsTArray<nsRefPtr<gfxFontFamily> >& array)
{
mPrefFonts.Put(uint32_t(aLangGroup), array);
}
void
gfxPlatformFontList::AddOtherFamilyName(gfxFontFamily *aFamilyEntry, nsAString& aOtherFamilyName)
{
nsAutoString key;
GenerateFontListKey(aOtherFamilyName, key);
if (!mOtherFamilyNames.GetWeak(key)) {
mOtherFamilyNames.Put(key, aFamilyEntry);
#ifdef PR_LOGGING
LOG_FONTLIST(("(fontlist-otherfamily) canonical family: %s, "
"other family: %s\n",
NS_ConvertUTF16toUTF8(aFamilyEntry->Name()).get(),
NS_ConvertUTF16toUTF8(aOtherFamilyName).get()));
#endif
if (mBadUnderlineFamilyNames.Contains(key))
aFamilyEntry->SetBadUnderlineFamily();
}
}
void
gfxPlatformFontList::AddFullname(gfxFontEntry *aFontEntry, nsAString& aFullname)
{
if (!mExtraNames->mFullnames.GetWeak(aFullname)) {
mExtraNames->mFullnames.Put(aFullname, aFontEntry);
#ifdef PR_LOGGING
LOG_FONTLIST(("(fontlist-fullname) name: %s, fullname: %s\n",
NS_ConvertUTF16toUTF8(aFontEntry->Name()).get(),
NS_ConvertUTF16toUTF8(aFullname).get()));
#endif
}
}
void
gfxPlatformFontList::AddPostscriptName(gfxFontEntry *aFontEntry, nsAString& aPostscriptName)
{
if (!mExtraNames->mPostscriptNames.GetWeak(aPostscriptName)) {
mExtraNames->mPostscriptNames.Put(aPostscriptName, aFontEntry);
#ifdef PR_LOGGING
LOG_FONTLIST(("(fontlist-postscript) name: %s, psname: %s\n",
NS_ConvertUTF16toUTF8(aFontEntry->Name()).get(),
NS_ConvertUTF16toUTF8(aPostscriptName).get()));
#endif
}
}
bool
gfxPlatformFontList::GetStandardFamilyName(const nsAString& aFontName, nsAString& aFamilyName)
{
aFamilyName.Truncate();
ResolveFontName(aFontName, aFamilyName);
return !aFamilyName.IsEmpty();
}
gfxCharacterMap*
gfxPlatformFontList::FindCharMap(gfxCharacterMap *aCmap)
{
aCmap->CalcHash();
gfxCharacterMap *cmap = AddCmap(aCmap);
cmap->mShared = true;
return cmap;
}
// add a cmap to the shared cmap set
gfxCharacterMap*
gfxPlatformFontList::AddCmap(const gfxCharacterMap* aCharMap)
{
CharMapHashKey *found =
mSharedCmaps.PutEntry(const_cast<gfxCharacterMap*>(aCharMap));
return found->GetKey();
}
// remove the cmap from the shared cmap set
void
gfxPlatformFontList::RemoveCmap(const gfxCharacterMap* aCharMap)
{
// skip lookups during teardown
if (mSharedCmaps.Count() == 0) {
return;
}
// cmap needs to match the entry *and* be the same ptr before removing
CharMapHashKey *found =
mSharedCmaps.GetEntry(const_cast<gfxCharacterMap*>(aCharMap));
if (found && found->GetKey() == aCharMap) {
mSharedCmaps.RemoveEntry(const_cast<gfxCharacterMap*>(aCharMap));
}
}
void
gfxPlatformFontList::InitLoader()
{
GetFontFamilyList(mFontFamiliesToLoad);
mStartIndex = 0;
mNumFamilies = mFontFamiliesToLoad.Length();
}
bool
gfxPlatformFontList::RunLoader()
{
uint32_t i, endIndex = (mStartIndex + mIncrement < mNumFamilies ? mStartIndex + mIncrement : mNumFamilies);
bool loadCmaps = !UsesSystemFallback() ||
gfxPlatform::GetPlatform()->UseCmapsDuringSystemFallback();
// for each font family, load in various font info
for (i = mStartIndex; i < endIndex; i++) {
gfxFontFamily* familyEntry = mFontFamiliesToLoad[i];
// find all faces that are members of this family
familyEntry->FindStyleVariations();
if (familyEntry->GetFontList().Length() == 0) {
// failed to load any faces for this family, so discard it
nsAutoString key;
GenerateFontListKey(familyEntry->Name(), key);
mFontFamilies.Remove(key);
continue;
}
// load the cmaps if needed
if (loadCmaps) {
familyEntry->ReadAllCMAPs();
}
// read in face names
familyEntry->ReadFaceNames(this, NeedFullnamePostscriptNames());
// check whether the family can be considered "simple" for style matching
familyEntry->CheckForSimpleFamily();
}
mStartIndex = endIndex;
return (mStartIndex >= mNumFamilies);
}
void
gfxPlatformFontList::FinishLoader()
{
mFontFamiliesToLoad.Clear();
mNumFamilies = 0;
}
void
gfxPlatformFontList::GetPrefsAndStartLoader()
{
mIncrement =
std::max(1u, Preferences::GetUint(FONT_LOADER_FAMILIES_PER_SLICE_PREF));
uint32_t delay =
std::max(1u, Preferences::GetUint(FONT_LOADER_DELAY_PREF));
uint32_t interval =
std::max(1u, Preferences::GetUint(FONT_LOADER_INTERVAL_PREF));
StartLoader(delay, interval);
}
// Support for memory reporting
static size_t
SizeOfFamilyEntryExcludingThis(const nsAString& aKey,
const nsRefPtr<gfxFontFamily>& aFamily,
MallocSizeOf aMallocSizeOf,
void* aUserArg)
{
FontListSizes *sizes = static_cast<FontListSizes*>(aUserArg);
aFamily->AddSizeOfExcludingThis(aMallocSizeOf, sizes);
sizes->mFontListSize += aKey.SizeOfExcludingThisIfUnshared(aMallocSizeOf);
// we return zero here because the measurements have been added directly
// to the relevant fields of the FontListSizes record
return 0;
}
// this is also used by subclasses that hold additional hashes of family names
/*static*/ size_t
gfxPlatformFontList::SizeOfFamilyNameEntryExcludingThis
(const nsAString& aKey,
const nsRefPtr<gfxFontFamily>& aFamily,
MallocSizeOf aMallocSizeOf,
void* aUserArg)
{
// we don't count the size of the family here, because this is an *extra*
// reference to a family that will have already been counted in the main list
return aKey.SizeOfExcludingThisIfUnshared(aMallocSizeOf);
}
static size_t
SizeOfFontNameEntryExcludingThis(const nsAString& aKey,
const nsRefPtr<gfxFontEntry>& aFont,
MallocSizeOf aMallocSizeOf,
void* aUserArg)
{
// the font itself is counted by its owning family; here we only care about
// the name stored in the hashtable key
return aKey.SizeOfExcludingThisIfUnshared(aMallocSizeOf);
}
static size_t
SizeOfPrefFontEntryExcludingThis
(const uint32_t& aKey,
const nsTArray<nsRefPtr<gfxFontFamily> >& aList,
MallocSizeOf aMallocSizeOf,
void* aUserArg)
{
// again, we only care about the size of the array itself; we don't follow
// the refPtrs stored in it, because they point to entries already owned
// and accounted-for by the main font list
return aList.SizeOfExcludingThis(aMallocSizeOf);
}
static size_t
SizeOfStringEntryExcludingThis(nsStringHashKey* aHashEntry,
MallocSizeOf aMallocSizeOf,
void* aUserArg)
{
return aHashEntry->GetKey().SizeOfExcludingThisIfUnshared(aMallocSizeOf);
}
static size_t
SizeOfSharedCmapExcludingThis(CharMapHashKey* aHashEntry,
MallocSizeOf aMallocSizeOf,
void* aUserArg)
{
FontListSizes *sizes = static_cast<FontListSizes*>(aUserArg);
uint32_t size = aHashEntry->GetKey()->SizeOfIncludingThis(aMallocSizeOf);
sizes->mCharMapsSize += size;
// we return zero here because the measurements have been added directly
// to the relevant fields of the FontListSizes record
return 0;
}
void
gfxPlatformFontList::AddSizeOfExcludingThis(MallocSizeOf aMallocSizeOf,
FontListSizes* aSizes) const
{
aSizes->mFontListSize +=
mFontFamilies.SizeOfExcludingThis(SizeOfFamilyEntryExcludingThis,
aMallocSizeOf, aSizes);
aSizes->mFontListSize +=
mOtherFamilyNames.SizeOfExcludingThis(SizeOfFamilyNameEntryExcludingThis,
aMallocSizeOf);
if (mExtraNames) {
aSizes->mFontListSize +=
mExtraNames->mFullnames.SizeOfExcludingThis(SizeOfFontNameEntryExcludingThis,
aMallocSizeOf);
aSizes->mFontListSize +=
mExtraNames->mPostscriptNames.SizeOfExcludingThis(SizeOfFontNameEntryExcludingThis,
aMallocSizeOf);
}
aSizes->mFontListSize +=
mCodepointsWithNoFonts.SizeOfExcludingThis(aMallocSizeOf);
aSizes->mFontListSize +=
mFontFamiliesToLoad.SizeOfExcludingThis(aMallocSizeOf);
aSizes->mFontListSize +=
mPrefFonts.SizeOfExcludingThis(SizeOfPrefFontEntryExcludingThis,
aMallocSizeOf);
aSizes->mFontListSize +=
mBadUnderlineFamilyNames.SizeOfExcludingThis(SizeOfStringEntryExcludingThis,
aMallocSizeOf);
aSizes->mFontListSize +=
mSharedCmaps.SizeOfExcludingThis(SizeOfSharedCmapExcludingThis,
aMallocSizeOf, aSizes);
}
void
gfxPlatformFontList::AddSizeOfIncludingThis(MallocSizeOf aMallocSizeOf,
FontListSizes* aSizes) const
{
aSizes->mFontListSize += aMallocSizeOf(this);
AddSizeOfExcludingThis(aMallocSizeOf, aSizes);
}
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