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Merge remote-tracking branch 'origin/tracking' into custom

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roytam1 2025-08-21 16:07:53 +08:00
commit e5ea29554a
4 changed files with 20 additions and 15 deletions
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13
gfx/thebes/gfxFontEntry.cpp
View file

@ -495,7 +495,7 @@ public:
private:
// The font table data block
nsTArray<uint8_t> mTableData;
const nsTArray<uint8_t> mTableData;
// The blob destroy function needs to know the owning font entry
// so that it can hold the font-entry's reference while modifying the
@ -591,11 +591,16 @@ gfxFontEntry::ShareFontTableAndGetBlob(uint32_t aTag,
mFontTableCache = MakeUnique<nsTHashtable<FontTableHashEntry>>(8);
}
FontTableHashEntry *entry = mFontTableCache->PutEntry(aTag);
if (MOZ_UNLIKELY(!entry)) { // OOM
return nullptr;
FontTableHashEntry* entry;
if (MOZ_UNLIKELY(entry = mFontTableCache->GetEntry(aTag))) {
// We must have been racing with another GetFontTable for the same table,
// and it won the race and filled in the entry before us.
// Ignore `aBuffer` in that case, and return a reference to the existing blob.
return entry->GetBlob();
}
entry = mFontTableCache->PutEntry(aTag);
if (!aBuffer) {
// ensure the entry is null
entry->Clear();

2
gfx/thebes/gfxFontEntry.h
View file

@ -265,7 +265,7 @@ public:
// unregisters the table from the font entry.
//
// Pass nullptr for aBuffer to indicate that the table is not present and
// nullptr will be returned. Also returns nullptr on OOM.
// nullptr will be returned.
hb_blob_t *ShareFontTableAndGetBlob(uint32_t aTag,
nsTArray<uint8_t>* aTable);