diff --git a/libs/hwui/WebViewFunctorManager.cpp b/libs/hwui/WebViewFunctorManager.cpp
index efa9b11..9d16ee8 100644
--- a/libs/hwui/WebViewFunctorManager.cpp
+++ b/libs/hwui/WebViewFunctorManager.cpp
@@ -87,7 +87,7 @@
     WebViewFunctorManager::instance().releaseFunctor(functor);
 }
 
-void WebViewFunctor_reportRenderingThreads(int functor, const int32_t* thread_ids, size_t size) {
+void WebViewFunctor_reportRenderingThreads(int functor, const pid_t* thread_ids, size_t size) {
     WebViewFunctorManager::instance().reportRenderingThreads(functor, thread_ids, size);
 }
 
@@ -265,8 +265,8 @@
     funcs.transactionDeleteFunc(transaction);
 }
 
-void WebViewFunctor::reportRenderingThreads(const int32_t* thread_ids, size_t size) {
-    mRenderingThreads = std::vector<int32_t>(thread_ids, thread_ids + size);
+void WebViewFunctor::reportRenderingThreads(const pid_t* thread_ids, size_t size) {
+    mRenderingThreads = std::vector<pid_t>(thread_ids, thread_ids + size);
 }
 
 WebViewFunctorManager& WebViewFunctorManager::instance() {
@@ -355,7 +355,7 @@
     }
 }
 
-void WebViewFunctorManager::reportRenderingThreads(int functor, const int32_t* thread_ids,
+void WebViewFunctorManager::reportRenderingThreads(int functor, const pid_t* thread_ids,
                                                    size_t size) {
     std::lock_guard _lock{mLock};
     for (auto& iter : mFunctors) {
@@ -366,8 +366,8 @@
     }
 }
 
-std::vector<int32_t> WebViewFunctorManager::getRenderingThreadsForActiveFunctors() {
-    std::vector<int32_t> renderingThreads;
+std::vector<pid_t> WebViewFunctorManager::getRenderingThreadsForActiveFunctors() {
+    std::vector<pid_t> renderingThreads;
     std::lock_guard _lock{mLock};
     for (const auto& iter : mActiveFunctors) {
         const auto& functorThreads = iter->getRenderingThreads();
diff --git a/libs/hwui/WebViewFunctorManager.h b/libs/hwui/WebViewFunctorManager.h
index 635d863..ec17640 100644
--- a/libs/hwui/WebViewFunctorManager.h
+++ b/libs/hwui/WebViewFunctorManager.h
@@ -54,7 +54,7 @@
 
         void onRemovedFromTree() { mReference.onRemovedFromTree(); }
 
-        const std::vector<int32_t>& getRenderingThreads() const {
+        const std::vector<pid_t>& getRenderingThreads() const {
             return mReference.getRenderingThreads();
         }
 
@@ -79,8 +79,8 @@
     ASurfaceControl* getSurfaceControl();
     void mergeTransaction(ASurfaceTransaction* transaction);
 
-    void reportRenderingThreads(const int32_t* thread_ids, size_t size);
-    const std::vector<int32_t>& getRenderingThreads() const { return mRenderingThreads; }
+    void reportRenderingThreads(const pid_t* thread_ids, size_t size);
+    const std::vector<pid_t>& getRenderingThreads() const { return mRenderingThreads; }
 
     sp<Handle> createHandle() {
         LOG_ALWAYS_FATAL_IF(mCreatedHandle);
@@ -101,7 +101,7 @@
     bool mCreatedHandle = false;
     int32_t mParentSurfaceControlGenerationId = 0;
     ASurfaceControl* mSurfaceControl = nullptr;
-    std::vector<int32_t> mRenderingThreads;
+    std::vector<pid_t> mRenderingThreads;
 };
 
 class WebViewFunctorManager {
@@ -112,8 +112,8 @@
     void releaseFunctor(int functor);
     void onContextDestroyed();
     void destroyFunctor(int functor);
-    void reportRenderingThreads(int functor, const int32_t* thread_ids, size_t size);
-    std::vector<int32_t> getRenderingThreadsForActiveFunctors();
+    void reportRenderingThreads(int functor, const pid_t* thread_ids, size_t size);
+    std::vector<pid_t> getRenderingThreadsForActiveFunctors();
 
     sp<WebViewFunctor::Handle> handleFor(int functor);
 
diff --git a/libs/hwui/platform/host/WebViewFunctorManager.cpp b/libs/hwui/platform/host/WebViewFunctorManager.cpp
index ed50190..4ba206b 100644
--- a/libs/hwui/platform/host/WebViewFunctorManager.cpp
+++ b/libs/hwui/platform/host/WebViewFunctorManager.cpp
@@ -50,7 +50,7 @@
 
 void WebViewFunctor::mergeTransaction(ASurfaceTransaction* transaction) {}
 
-void WebViewFunctor::reportRenderingThreads(const int32_t* thread_ids, size_t size) {}
+void WebViewFunctor::reportRenderingThreads(const pid_t* thread_ids, size_t size) {}
 
 void WebViewFunctor::reparentSurfaceControl(ASurfaceControl* parent) {}
 
@@ -70,11 +70,11 @@
 
 void WebViewFunctorManager::destroyFunctor(int functor) {}
 
-void WebViewFunctorManager::reportRenderingThreads(int functor, const int32_t* thread_ids,
+void WebViewFunctorManager::reportRenderingThreads(int functor, const pid_t* thread_ids,
                                                    size_t size) {}
 
-std::vector<int32_t> WebViewFunctorManager::getRenderingThreadsForActiveFunctors() {
-    return std::vector<int32_t>();
+std::vector<pid_t> WebViewFunctorManager::getRenderingThreadsForActiveFunctors() {
+    return {};
 }
 
 sp<WebViewFunctor::Handle> WebViewFunctorManager::handleFor(int functor) {
diff --git a/libs/hwui/renderthread/CanvasContext.cpp b/libs/hwui/renderthread/CanvasContext.cpp
index b06ad6f..66e0896 100644
--- a/libs/hwui/renderthread/CanvasContext.cpp
+++ b/libs/hwui/renderthread/CanvasContext.cpp
@@ -73,7 +73,7 @@
 
 CanvasContext* CanvasContext::create(RenderThread& thread, bool translucent,
                                      RenderNode* rootRenderNode, IContextFactory* contextFactory,
-                                     int32_t uiThreadId, int32_t renderThreadId) {
+                                     pid_t uiThreadId, pid_t renderThreadId) {
     auto renderType = Properties::getRenderPipelineType();
 
     switch (renderType) {