Fix Sensors HAL 1.0 VTS tests

HAL 1.0 VTS tests need to detach the polling thread or it will never
exit on its own. Additionally, the poll() methods return status needs to
be checked or HIDL will assert and cause the program to crash.

Bug: 150475314
Test: atest VtsHalSensorsV1_0TargetTest VtsHalSensorsV2_0TargetTest
Change-Id: I626b7aa064a1f258c968d1787872b9c67786dede

3 files changed, 27 insertions, 18 deletions

diff --git a/sensors/1.0/vts/functional/SensorsHidlEnvironmentV1_0.cpp b/sensors/1.0/vts/functional/SensorsHidlEnvironmentV1_0.cpp
index 1e5e886288..aca6961e0d 100644
--- a/sensors/1.0/vts/functional/SensorsHidlEnvironmentV1_0.cpp
+++ b/sensors/1.0/vts/functional/SensorsHidlEnvironmentV1_0.cpp
@@ -25,6 +25,13 @@ using ::android::hardware::sensors::V1_0::ISensors;
 using ::android::hardware::sensors::V1_0::Result;
 using ::android::hardware::sensors::V1_0::SensorInfo;
 
+void SensorsHidlEnvironmentV1_0::HidlTearDown() {
+    mStopThread = true;
+    if (mPollThread.joinable()) {
+        mPollThread.detach();
+    }
+}
+
 bool SensorsHidlEnvironmentV1_0::resetHal() {
     // wait upto 100ms * 10 = 1s for hidl service.
     constexpr auto RETRY_DELAY = std::chrono::milliseconds(100);
@@ -103,18 +110,23 @@ void SensorsHidlEnvironmentV1_0::pollingThread(SensorsHidlEnvironmentV1_0* env,
     ALOGD("polling thread start");
 
     while (!stop) {
-        env->sensors->poll(
-            64, [&](auto result, const auto& events, const auto& dynamicSensorsAdded) {
-                if (result != Result::OK ||
-                    (events.size() == 0 && dynamicSensorsAdded.size() == 0) || stop) {
-                    stop = true;
-                    return;
-                }
-
-                for (const auto& e : events) {
-                    env->addEvent(e);
-                }
-            });
+        if (!env->sensors
+                     ->poll(64,
+                            [&](auto result, const auto& events, const auto& dynamicSensorsAdded) {
+                                if (result != Result::OK ||
+                                    (events.size() == 0 && dynamicSensorsAdded.size() == 0) ||
+                                    stop) {
+                                    stop = true;
+                                    return;
+                                }
+
+                                for (const auto& e : events) {
+                                    env->addEvent(e);
+                                }
+                            })
+                     .isOk()) {
+            break;
+        }
     }
     ALOGD("polling thread end");
 }
\ No newline at end of file
diff --git a/sensors/1.0/vts/functional/SensorsHidlEnvironmentV1_0.h b/sensors/1.0/vts/functional/SensorsHidlEnvironmentV1_0.h
index 485ed1ed87..168777d8be 100644
--- a/sensors/1.0/vts/functional/SensorsHidlEnvironmentV1_0.h
+++ b/sensors/1.0/vts/functional/SensorsHidlEnvironmentV1_0.h
@@ -32,6 +32,8 @@ class SensorsHidlTest;
 class SensorsHidlEnvironmentV1_0
     : public SensorsHidlEnvironmentBase<::android::hardware::sensors::V1_0::Event> {
   public:
+    void HidlTearDown() override;
+
     using Event = ::android::hardware::sensors::V1_0::Event;
     SensorsHidlEnvironmentV1_0(const std::string& service_name)
         : SensorsHidlEnvironmentBase(service_name) {}
diff --git a/sensors/common/vts/utils/include/sensors-vts-utils/SensorsHidlEnvironmentBase.h b/sensors/common/vts/utils/include/sensors-vts-utils/SensorsHidlEnvironmentBase.h
index 781427d827..19dfbe55e4 100644
--- a/sensors/common/vts/utils/include/sensors-vts-utils/SensorsHidlEnvironmentBase.h
+++ b/sensors/common/vts/utils/include/sensors-vts-utils/SensorsHidlEnvironmentBase.h
@@ -46,12 +46,7 @@ class SensorsHidlEnvironmentBase {
         std::this_thread::sleep_for(std::chrono::seconds(3));
     }
 
-    virtual void HidlTearDown() {
-        mStopThread = true;
-        if (mPollThread.joinable()) {
-            mPollThread.join();
-        }
-    }
+    virtual void HidlTearDown() = 0;
 
     // Get and clear all events collected so far (like "cat" shell command).
     // If output is nullptr, it clears all collected events.