diff --git a/audio/effect/all-versions/default/Android.bp b/audio/effect/all-versions/default/Android.bp
index 1e01ffb..a3c3ed6 100644
--- a/audio/effect/all-versions/default/Android.bp
+++ b/audio/effect/all-versions/default/Android.bp
@@ -30,6 +30,7 @@
     ],
 
     shared_libs: [
+        "libaudioutils",
         "libbase",
         "libcutils",
         "libeffects",
@@ -48,6 +49,7 @@
         "libeffects_headers",
         "libhardware_headers",
         "libmedia_headers",
+        "libmediautils_headers",
     ],
 }
 
diff --git a/audio/effect/all-versions/default/Effect.cpp b/audio/effect/all-versions/default/Effect.cpp
index 49f6bf2..3baafc9 100644
--- a/audio/effect/all-versions/default/Effect.cpp
+++ b/audio/effect/all-versions/default/Effect.cpp
@@ -22,13 +22,11 @@
 #include "Effect.h"
 #include "common/all-versions/default/EffectMap.h"
 
-#include <memory.h>
-
 #define ATRACE_TAG ATRACE_TAG_AUDIO
-
 #include <HidlUtils.h>
 #include <android/log.h>
 #include <media/EffectsFactoryApi.h>
+#include <mediautils/ScopedStatistics.h>
 #include <util/EffectUtils.h>
 #include <utils/Trace.h>
 
@@ -49,21 +47,27 @@
 
 namespace {
 
+#define SCOPED_STATS()                                                       \
+    ::android::mediautils::ScopedStatistics scopedStatistics {               \
+        std::string("EffectHal::").append(__func__), mEffectHal->mStatistics \
+    }
+
 class ProcessThread : public Thread {
    public:
     // ProcessThread's lifespan never exceeds Effect's lifespan.
-    ProcessThread(std::atomic<bool>* stop, effect_handle_t effect,
-                  std::atomic<audio_buffer_t*>* inBuffer, std::atomic<audio_buffer_t*>* outBuffer,
-                  Effect::StatusMQ* statusMQ, EventFlag* efGroup)
-        : Thread(false /*canCallJava*/),
-          mStop(stop),
-          mEffect(effect),
-          mHasProcessReverse((*mEffect)->process_reverse != NULL),
-          mInBuffer(inBuffer),
-          mOutBuffer(outBuffer),
-          mStatusMQ(statusMQ),
-          mEfGroup(efGroup) {}
-    virtual ~ProcessThread() {}
+     ProcessThread(std::atomic<bool>* stop, effect_handle_t effect,
+                   std::atomic<audio_buffer_t*>* inBuffer, std::atomic<audio_buffer_t*>* outBuffer,
+                   Effect::StatusMQ* statusMQ, EventFlag* efGroup, Effect* effectHal)
+         : Thread(false /*canCallJava*/),
+           mStop(stop),
+           mEffect(effect),
+           mHasProcessReverse((*mEffect)->process_reverse != NULL),
+           mInBuffer(inBuffer),
+           mOutBuffer(outBuffer),
+           mStatusMQ(statusMQ),
+           mEfGroup(efGroup),
+           mEffectHal(effectHal) {}
+     virtual ~ProcessThread() {}
 
    private:
     std::atomic<bool>* mStop;
@@ -73,6 +77,7 @@
     std::atomic<audio_buffer_t*>* mOutBuffer;
     Effect::StatusMQ* mStatusMQ;
     EventFlag* mEfGroup;
+    Effect* const mEffectHal;
 
     bool threadLoop() override;
 };
@@ -102,6 +107,9 @@
             audio_buffer_t* outBuffer =
                 std::atomic_load_explicit(mOutBuffer, std::memory_order_relaxed);
             if (inBuffer != nullptr && outBuffer != nullptr) {
+                // Time this effect process
+                SCOPED_STATS();
+
                 if (efState & static_cast<uint32_t>(MessageQueueFlagBits::REQUEST_PROCESS)) {
                     processResult = (*mEffect)->process(mEffect, inBuffer, outBuffer);
                 } else {
@@ -359,7 +367,7 @@
 
     // Create and launch the thread.
     mProcessThread = new ProcessThread(&mStopProcessThread, mHandle, &mHalInBufferPtr,
-                                       &mHalOutBufferPtr, tempStatusMQ.get(), mEfGroup);
+                                       &mHalOutBufferPtr, tempStatusMQ.get(), mEfGroup, this);
     status = mProcessThread->run("effect", PRIORITY_URGENT_AUDIO);
     if (status != OK) {
         ALOGW("failed to start effect processing thread: %s", strerror(-status));
@@ -749,6 +757,8 @@
     if (fd.getNativeHandle() != nullptr && fd->numFds == 1) {
         uint32_t cmdData = fd->data[0];
         (void)sendCommand(EFFECT_CMD_DUMP, "DUMP", sizeof(cmdData), &cmdData);
+        const std::string s = mStatistics->dump();
+        if (s.size() != 0) write(cmdData, s.c_str(), s.size());
     }
     return Void();
 }
diff --git a/audio/effect/all-versions/default/Effect.h b/audio/effect/all-versions/default/Effect.h
index f9a6796..011544d 100644
--- a/audio/effect/all-versions/default/Effect.h
+++ b/audio/effect/all-versions/default/Effect.h
@@ -29,6 +29,7 @@
 #include <fmq/MessageQueue.h>
 #include <hidl/MQDescriptor.h>
 #include <hidl/Status.h>
+#include <mediautils/MethodStatistics.h>
 #include <utils/Thread.h>
 
 #include <hardware/audio_effect.h>
@@ -169,7 +170,11 @@
     Result setParameterImpl(uint32_t paramSize, const void* paramData, uint32_t valueSize,
                             const void* valueData);
 
-   private:
+    // process execution statistics
+    const std::shared_ptr<mediautils::MethodStatistics<std::string>> mStatistics =
+            std::make_shared<mediautils::MethodStatistics<std::string>>();
+
+  private:
     friend struct VirtualizerEffect;  // for getParameterImpl
     friend struct VisualizerEffect;   // to allow executing commands
 
diff --git a/automotive/vehicle/2.0/default/impl/vhal_v2_0/GeneratorHub.cpp b/automotive/vehicle/2.0/default/impl/vhal_v2_0/GeneratorHub.cpp
index 9be9ea7..503afd2 100644
--- a/automotive/vehicle/2.0/default/impl/vhal_v2_0/GeneratorHub.cpp
+++ b/automotive/vehicle/2.0/default/impl/vhal_v2_0/GeneratorHub.cpp
@@ -28,11 +28,18 @@
 
 namespace impl {
 
-GeneratorHub::GeneratorHub(const OnHalEvent& onHalEvent)
-    : mOnHalEvent(onHalEvent), mThread(&GeneratorHub::run, this) {}
+GeneratorHub::GeneratorHub(const OnHalEvent& onHalEvent) : mOnHalEvent(onHalEvent) {
+    mThread = std::thread(&GeneratorHub::run, this);
+}
 
 GeneratorHub::~GeneratorHub() {
-    mShuttingDownFlag.store(true);
+    {
+        // Even if the shared variable is atomic, it must be modified under the
+        // mutex in order to correctly publish the modification to the waiting
+        // thread.
+        std::unique_lock<std::mutex> g(mLock);
+        mShuttingDownFlag.store(true);
+    }
     mCond.notify_all();
     if (mThread.joinable()) {
         mThread.join();
diff --git a/automotive/vehicle/aidl/impl/fake_impl/GeneratorHub/src/GeneratorHub.cpp b/automotive/vehicle/aidl/impl/fake_impl/GeneratorHub/src/GeneratorHub.cpp
index 1690c78..d815456 100644
--- a/automotive/vehicle/aidl/impl/fake_impl/GeneratorHub/src/GeneratorHub.cpp
+++ b/automotive/vehicle/aidl/impl/fake_impl/GeneratorHub/src/GeneratorHub.cpp
@@ -29,11 +29,18 @@
 
 using ::android::base::ScopedLockAssertion;
 
-GeneratorHub::GeneratorHub(OnHalEvent&& onHalEvent)
-    : mOnHalEvent(onHalEvent), mThread(&GeneratorHub::run, this) {}
+GeneratorHub::GeneratorHub(OnHalEvent&& onHalEvent) : mOnHalEvent(onHalEvent) {
+    mThread = std::thread(&GeneratorHub::run, this);
+}
 
 GeneratorHub::~GeneratorHub() {
-    mShuttingDownFlag.store(true);
+    {
+        // Even if the shared variable is atomic, it must be modified under the
+        // mutex in order to correctly publish the modification to the waiting
+        // thread.
+        std::unique_lock<std::mutex> lock(mGeneratorsLock);
+        mShuttingDownFlag.store(true);
+    }
     mCond.notify_all();
     if (mThread.joinable()) {
         mThread.join();
diff --git a/automotive/vehicle/aidl/impl/fake_impl/hardware/src/FakeVehicleHardware.cpp b/automotive/vehicle/aidl/impl/fake_impl/hardware/src/FakeVehicleHardware.cpp
index a7e986b..7f9b63a 100644
--- a/automotive/vehicle/aidl/impl/fake_impl/hardware/src/FakeVehicleHardware.cpp
+++ b/automotive/vehicle/aidl/impl/fake_impl/hardware/src/FakeVehicleHardware.cpp
@@ -1339,11 +1339,15 @@
 template <class CallbackType, class RequestType>
 FakeVehicleHardware::PendingRequestHandler<CallbackType, RequestType>::PendingRequestHandler(
         FakeVehicleHardware* hardware)
-    : mHardware(hardware), mThread([this] {
-          while (mRequests.waitForItems()) {
-              handleRequestsOnce();
-          }
-      }) {}
+    : mHardware(hardware) {
+    // Don't initialize mThread in initialization list because mThread depends on mRequests and we
+    // want mRequests to be initialized first.
+    mThread = std::thread([this] {
+        while (mRequests.waitForItems()) {
+            handleRequestsOnce();
+        }
+    });
+}
 
 template <class CallbackType, class RequestType>
 void FakeVehicleHardware::PendingRequestHandler<CallbackType, RequestType>::addRequest(
diff --git a/automotive/vehicle/aidl/impl/utils/common/include/PendingRequestPool.h b/automotive/vehicle/aidl/impl/utils/common/include/PendingRequestPool.h
index 3f8db93..28cf08e 100644
--- a/automotive/vehicle/aidl/impl/utils/common/include/PendingRequestPool.h
+++ b/automotive/vehicle/aidl/impl/utils/common/include/PendingRequestPool.h
@@ -21,7 +21,6 @@
 #include <android-base/result.h>
 #include <android-base/thread_annotations.h>
 
-#include <atomic>
 #include <list>
 #include <mutex>
 #include <thread>
@@ -85,7 +84,7 @@
     std::unordered_map<const void*, std::list<PendingRequest>> mPendingRequestsByClient
             GUARDED_BY(mLock);
     std::thread mThread;
-    std::atomic<bool> mThreadStop = false;
+    bool mThreadStop = false;
     std::condition_variable mCv;
     std::mutex mCvLock;
 
diff --git a/automotive/vehicle/aidl/impl/utils/common/src/PendingRequestPool.cpp b/automotive/vehicle/aidl/impl/utils/common/src/PendingRequestPool.cpp
index 0196edd..ab50499 100644
--- a/automotive/vehicle/aidl/impl/utils/common/src/PendingRequestPool.cpp
+++ b/automotive/vehicle/aidl/impl/utils/common/src/PendingRequestPool.cpp
@@ -39,20 +39,27 @@
 
 }  // namespace
 
-PendingRequestPool::PendingRequestPool(int64_t timeoutInNano)
-    : mTimeoutInNano(timeoutInNano), mThread([this] {
-          // [this] must be alive within this thread because destructor would wait for this thread
-          // to exit.
-          int64_t sleepTime = std::min(mTimeoutInNano, static_cast<int64_t>(CHECK_TIME_IN_NANO));
-          std::unique_lock<std::mutex> lk(mCvLock);
-          while (!mCv.wait_for(lk, std::chrono::nanoseconds(sleepTime),
-                               [this] { return mThreadStop.load(); })) {
-              checkTimeout();
-          }
-      }) {}
+PendingRequestPool::PendingRequestPool(int64_t timeoutInNano) : mTimeoutInNano(timeoutInNano) {
+    mThread = std::thread([this] {
+        // [this] must be alive within this thread because destructor would wait for this thread
+        // to exit.
+        int64_t sleepTime = std::min(mTimeoutInNano, static_cast<int64_t>(CHECK_TIME_IN_NANO));
+        std::unique_lock<std::mutex> lk(mCvLock);
+        while (!mCv.wait_for(lk, std::chrono::nanoseconds(sleepTime),
+                             [this] { return mThreadStop; })) {
+            checkTimeout();
+        }
+    });
+}
 
 PendingRequestPool::~PendingRequestPool() {
-    mThreadStop = true;
+    {
+        // Even if the shared variable is atomic, it must be modified under the
+        // mutex in order to correctly publish the modification to the waiting
+        // thread.
+        std::unique_lock<std::mutex> lk(mCvLock);
+        mThreadStop = true;
+    }
     mCv.notify_all();
     if (mThread.joinable()) {
         mThread.join();
diff --git a/automotive/vehicle/aidl/impl/utils/common/src/RecurrentTimer.cpp b/automotive/vehicle/aidl/impl/utils/common/src/RecurrentTimer.cpp
index 8521c4d..fbc79fa 100644
--- a/automotive/vehicle/aidl/impl/utils/common/src/RecurrentTimer.cpp
+++ b/automotive/vehicle/aidl/impl/utils/common/src/RecurrentTimer.cpp
@@ -29,7 +29,9 @@
 
 using ::android::base::ScopedLockAssertion;
 
-RecurrentTimer::RecurrentTimer() : mThread(&RecurrentTimer::loop, this) {}
+RecurrentTimer::RecurrentTimer() {
+    mThread = std::thread(&RecurrentTimer::loop, this);
+}
 
 RecurrentTimer::~RecurrentTimer() {
     {
diff --git a/biometrics/fingerprint/aidl/default/WorkerThread.cpp b/biometrics/fingerprint/aidl/default/WorkerThread.cpp
index d1a63d0..34ebb5c 100644
--- a/biometrics/fingerprint/aidl/default/WorkerThread.cpp
+++ b/biometrics/fingerprint/aidl/default/WorkerThread.cpp
@@ -31,7 +31,10 @@
 WorkerThread::~WorkerThread() {
     // This is a signal for threadFunc to terminate as soon as possible, and a hint for schedule
     // that it doesn't need to do any work.
-    mIsDestructing = true;
+    {
+        std::unique_lock<std::mutex> lock(mQueueMutex);
+        mIsDestructing = true;
+    }
     mQueueCond.notify_all();
     mThread.join();
 }
diff --git a/bluetooth/1.0/default/test/fuzzer/bluetoothV1.0_fuzzer.cpp b/bluetooth/1.0/default/test/fuzzer/bluetoothV1.0_fuzzer.cpp
index 90cdc66..fb8df99 100644
--- a/bluetooth/1.0/default/test/fuzzer/bluetoothV1.0_fuzzer.cpp
+++ b/bluetooth/1.0/default/test/fuzzer/bluetoothV1.0_fuzzer.cpp
@@ -88,11 +88,18 @@
     }
     mBtHci->close();
     mBtHci.clear();
+    for (size_t i = 0; i < mFdCount; ++i) {
+      if (mFdList[i]) {
+        close(mFdList[i]);
+      }
+    }
   }
   bool init(const uint8_t* data, size_t size);
   void process();
 
  private:
+  size_t mFdCount = 1;
+  int32_t mFdList[CH_MAX] = {0};
   sp<BluetoothHci> mBtHci = nullptr;
   FuzzedDataProvider* mFdp = nullptr;
 };
@@ -143,17 +150,15 @@
   bool shouldSetH4Protocol = mFdp->ConsumeBool();
   BtVendor* btVendor = BtVendor::getInstance();
 
-  size_t fdcount = 1;
-  int32_t fdList[CH_MAX] = {0};
   if (!shouldSetH4Protocol) {
-    fdcount = mFdp->ConsumeIntegralInRange<size_t>(kMinFdcount, CH_MAX - 1);
+    mFdCount = mFdp->ConsumeIntegralInRange<size_t>(kMinFdcount, CH_MAX - 1);
   }
 
-  for (size_t i = 0; i < fdcount; ++i) {
-    fdList[i] = open("/dev/null", O_RDWR | O_CREAT);
+  for (size_t i = 0; i < mFdCount; ++i) {
+    mFdList[i] = open("/dev/null", O_RDWR | O_CREAT);
   }
 
-  btVendor->populateFdList(fdList, fdcount);
+  btVendor->populateFdList(mFdList, mFdCount);
   mBtHci->initialize(bluetoothCallback);
 
   if (!bluetoothCallback->isInitialized) {
@@ -181,12 +186,6 @@
   }
 
   btVendor->callRemainingCbacks();
-
-  for (size_t i = 0; i < fdcount; ++i) {
-    if (fdList[i]) {
-      close(fdList[i]);
-    }
-  }
 }
 
 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
diff --git a/broadcastradio/common/utils/WorkerThread.cpp b/broadcastradio/common/utils/WorkerThread.cpp
index 31f4d3f..dd87f53 100644
--- a/broadcastradio/common/utils/WorkerThread.cpp
+++ b/broadcastradio/common/utils/WorkerThread.cpp
@@ -31,7 +31,11 @@
     return lhs.when > rhs.when;
 }
 
-WorkerThread::WorkerThread() : mIsTerminating(false), mThread(&WorkerThread::threadLoop, this) {}
+WorkerThread::WorkerThread() : mIsTerminating(false) {
+    // putting mThread in constructor instead of initializer list
+    // to ensure all class members are init before mThread starts
+    mThread = std::thread(&WorkerThread::threadLoop, this);
+}
 
 WorkerThread::~WorkerThread() {
     {
diff --git a/graphics/composer/2.4/vts/functional/VtsHalGraphicsComposerV2_4TargetTest.cpp b/graphics/composer/2.4/vts/functional/VtsHalGraphicsComposerV2_4TargetTest.cpp
index fa294ff..35225d9 100644
--- a/graphics/composer/2.4/vts/functional/VtsHalGraphicsComposerV2_4TargetTest.cpp
+++ b/graphics/composer/2.4/vts/functional/VtsHalGraphicsComposerV2_4TargetTest.cpp
@@ -737,6 +737,39 @@
     }
 }
 
+/*
+ * Test that no two display configs are exactly the same.
+ */
+TEST_P(GraphicsComposerHidlTest, GetDisplayConfigNoRepetitions) {
+    for (const auto& display : mDisplays) {
+        std::vector<Config> configs = mComposerClient->getDisplayConfigs(display.get());
+        for (int i = 0; i < configs.size(); i++) {
+            for (int j = i + 1; j < configs.size(); j++) {
+                const int32_t width1 = mComposerClient->getDisplayAttribute_2_4(
+                        display.get(), configs[i], IComposerClient::Attribute::WIDTH);
+                const int32_t height1 = mComposerClient->getDisplayAttribute_2_4(
+                        display.get(), configs[i], IComposerClient::Attribute::HEIGHT);
+                const int32_t vsyncPeriod1 = mComposerClient->getDisplayAttribute_2_4(
+                        display.get(), configs[i], IComposerClient::Attribute::VSYNC_PERIOD);
+                const int32_t group1 = mComposerClient->getDisplayAttribute_2_4(
+                        display.get(), configs[i], IComposerClient::Attribute::CONFIG_GROUP);
+
+                const int32_t width2 = mComposerClient->getDisplayAttribute_2_4(
+                        display.get(), configs[j], IComposerClient::Attribute::WIDTH);
+                const int32_t height2 = mComposerClient->getDisplayAttribute_2_4(
+                        display.get(), configs[j], IComposerClient::Attribute::HEIGHT);
+                const int32_t vsyncPeriod2 = mComposerClient->getDisplayAttribute_2_4(
+                        display.get(), configs[j], IComposerClient::Attribute::VSYNC_PERIOD);
+                const int32_t group2 = mComposerClient->getDisplayAttribute_2_4(
+                        display.get(), configs[j], IComposerClient::Attribute::CONFIG_GROUP);
+
+                ASSERT_FALSE(width1 == width2 && height1 == height2 &&
+                             vsyncPeriod1 == vsyncPeriod2 && group1 == group2);
+            }
+        }
+    }
+}
+
 }  // namespace
 }  // namespace vts
 }  // namespace V2_4
diff --git a/graphics/composer/aidl/vts/VtsHalGraphicsComposer3_TargetTest.cpp b/graphics/composer/aidl/vts/VtsHalGraphicsComposer3_TargetTest.cpp
index 759bfec..ece1fd3 100644
--- a/graphics/composer/aidl/vts/VtsHalGraphicsComposer3_TargetTest.cpp
+++ b/graphics/composer/aidl/vts/VtsHalGraphicsComposer3_TargetTest.cpp
@@ -2122,6 +2122,41 @@
     EXPECT_TRUE(mComposerClient->setPowerMode(getPrimaryDisplayId(), PowerMode::OFF).isOk());
 }
 
+/*
+ * Test that no two display configs are exactly the same.
+ */
+TEST_P(GraphicsComposerAidlTest, GetDisplayConfigNoRepetitions) {
+    for (const auto& display : mDisplays) {
+        const auto& [status, configs] = mComposerClient->getDisplayConfigs(display.getDisplayId());
+        for (std::vector<int>::size_type i = 0; i < configs.size(); i++) {
+            for (std::vector<int>::size_type j = i + 1; j < configs.size(); j++) {
+                const auto& [widthStatus1, width1] = mComposerClient->getDisplayAttribute(
+                        display.getDisplayId(), configs[i], DisplayAttribute::WIDTH);
+                const auto& [heightStatus1, height1] = mComposerClient->getDisplayAttribute(
+                        display.getDisplayId(), configs[i], DisplayAttribute::HEIGHT);
+                const auto& [vsyncPeriodStatus1, vsyncPeriod1] =
+                        mComposerClient->getDisplayAttribute(display.getDisplayId(), configs[i],
+                                                             DisplayAttribute::VSYNC_PERIOD);
+                const auto& [groupStatus1, group1] = mComposerClient->getDisplayAttribute(
+                        display.getDisplayId(), configs[i], DisplayAttribute::CONFIG_GROUP);
+
+                const auto& [widthStatus2, width2] = mComposerClient->getDisplayAttribute(
+                        display.getDisplayId(), configs[j], DisplayAttribute::WIDTH);
+                const auto& [heightStatus2, height2] = mComposerClient->getDisplayAttribute(
+                        display.getDisplayId(), configs[j], DisplayAttribute::HEIGHT);
+                const auto& [vsyncPeriodStatus2, vsyncPeriod2] =
+                        mComposerClient->getDisplayAttribute(display.getDisplayId(), configs[j],
+                                                             DisplayAttribute::VSYNC_PERIOD);
+                const auto& [groupStatus2, group2] = mComposerClient->getDisplayAttribute(
+                        display.getDisplayId(), configs[j], DisplayAttribute::CONFIG_GROUP);
+
+                ASSERT_FALSE(width1 == width2 && height1 == height2 &&
+                             vsyncPeriod1 == vsyncPeriod2 && group1 == group2);
+            }
+        }
+    }
+}
+
 GTEST_ALLOW_UNINSTANTIATED_PARAMETERIZED_TEST(GraphicsComposerAidlCommandTest);
 INSTANTIATE_TEST_SUITE_P(
         PerInstance, GraphicsComposerAidlCommandTest,
diff --git a/security/keymint/aidl/android/hardware/security/keymint/RpcHardwareInfo.aidl b/security/keymint/aidl/android/hardware/security/keymint/RpcHardwareInfo.aidl
index 3a4c233..0cb33ce 100644
--- a/security/keymint/aidl/android/hardware/security/keymint/RpcHardwareInfo.aidl
+++ b/security/keymint/aidl/android/hardware/security/keymint/RpcHardwareInfo.aidl
@@ -59,13 +59,17 @@
      * client should NOT interpret the content of the identifier in any way. The client can only
      * compare identifiers to determine if two IRemotelyProvisionedComponents share the same
      * implementation. Each IRemotelyProvisionedComponent implementation must have a distinct
-     * identifier from all other implementations on the same device.
+     * identifier from all other implementations, and it must be consistent across all devices.
+     * It's critical that this identifier not be usable to uniquely identify a specific device.
      *
      * This identifier must be consistent across reboots, as it is used to store and track
      * provisioned keys in a persistent, on-device database.
      *
      * uniqueId may not be empty, and must not be any longer than 32 characters.
      *
+     * A recommended construction for this value is "[Vendor] [Component Name] [Major Version]",
+     * e.g. "Google Trusty KeyMint 1".
+     *
      * This field was added in API version 2.
      *
      */