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64 lines
2.3 KiB
Diff
64 lines
2.3 KiB
Diff
From 2d696238c1acdd26b824b80c26942d06c071f451 Mon Sep 17 00:00:00 2001
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From: Mike Klein <mtklein@google.com>
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Date: Mon, 17 Sep 2018 17:29:39 -0400
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Subject: [PATCH] RESTRICT AUTOMERGE: Make listener lists threadsafe with a
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mutex.
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Bug: 124232283
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Test: Infeasible
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Cherry-pick of https://skia-review.googlesource.com/155060 in Skia
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There were conflicts due the fact that pi-dev does not have commit
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afa11586d782c7cb3e83b8af48023ff227349516 ("Make the SkPathRef
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GenIDChangeListener ref counted") or
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6c8d242b14355bf66c9137e9e4d6c7861d22168f ("Make atomic lists list for
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bitmaps and paths" - an alternate fix for this issue) and some smaller
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header file changes.
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Change-Id: I7c2c5cd6603007d099169071a1b7d1a230c621bc
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Merged-In: I91a8fbdd1b8fb4cf8b124ebdf17212c643058ef3
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---
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include/core/SkPixelRef.h | 3 ++-
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src/core/SkPixelRef.cpp | 2 ++
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2 files changed, 4 insertions(+), 1 deletion(-)
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diff --git a/include/core/SkPixelRef.h b/include/core/SkPixelRef.h
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index 4369e5d537..3b2de4eaa8 100644
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--- a/include/core/SkPixelRef.h
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+++ b/include/core/SkPixelRef.h
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@@ -236,7 +236,7 @@ class SK_API SkPixelRef : public SkFlattenable {
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virtual void onChange() = 0;
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};
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- // Takes ownership of listener.
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+ // Takes ownership of listener. Threadsafe.
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void addGenIDChangeListener(GenIDChangeListener* listener);
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protected:
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@@ -311,6 +311,7 @@ class SK_API SkPixelRef : public SkFlattenable {
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mutable uint32_t fGenerationID;
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mutable bool fUniqueGenerationID;
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+ SkMutex fGenIDChangeListenersMutex;
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SkTDArray<GenIDChangeListener*> fGenIDChangeListeners; // pointers are owned
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SkString fURI;
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diff --git a/src/core/SkPixelRef.cpp b/src/core/SkPixelRef.cpp
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index 6cc67d89af..290d29d71c 100644
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--- a/src/core/SkPixelRef.cpp
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+++ b/src/core/SkPixelRef.cpp
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@@ -242,10 +242,12 @@ void SkPixelRef::addGenIDChangeListener(GenIDChangeListener* listener) {
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SkDELETE(listener);
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return;
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}
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+ SkAutoMutexAcquire lock(fGenIDChangeListenersMutex);
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*fGenIDChangeListeners.append() = listener;
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}
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void SkPixelRef::callGenIDChangeListeners() {
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+ SkAutoMutexAcquire lock(fGenIDChangeListenersMutex);
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// We don't invalidate ourselves if we think another SkPixelRef is sharing our genID.
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if (fUniqueGenerationID) {
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for (int i = 0; i < fGenIDChangeListeners.count(); i++) {
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