IVGCVSW-5335 Documentation for fast_math

 * Changed documentation for fast_math to add warning about possibly reduction in precision.
 * Added -h,--help option to display command line help for the driver.
 * Added -V,--version option to display ArmNN version information for the driver.
 * Changed driver to display an error and the command line help if it cannot start for any reason.
 * Backend no longer defaults to GpuAcc.

Signed-off-by: Mike Kelly <mike.kelly@arm.com>
Change-Id: I270b10ec9d485fd25e25680fc29ea1fc2b0e8e1d

1 files changed, 14 insertions, 3 deletions

diff --git a/service.cpp b/service.cpp
index 823f0c75..5191fbfe 100644
--- a/service.cpp
+++ b/service.cpp
@@ -19,6 +19,11 @@ int main(int argc, char** argv)
 {
     android::sp<ArmnnDriver> driver;
     DriverOptions driverOptions(argc, argv);
+
+    if (driverOptions.ShouldExit())
+    {
+        return driverOptions.GetExitCode();
+    }
     try
     {
         driver = new ArmnnDriver(DriverOptions(argc, argv));
@@ -26,6 +31,8 @@ int main(int argc, char** argv)
     catch (const std::exception& e)
     {
         ALOGE("Could not create driver: %s", e.what());
+        std::cout << "Unable to start:" << std::endl
+                  << "Could not create driver: " << e.what() << std::endl;
         return EXIT_FAILURE;
     }
 
@@ -38,15 +45,19 @@ int main(int argc, char** argv)
     catch (const std::exception& e)
     {
         ALOGE("Could not register service: %s", e.what());
+        std::cout << "Unable to start:" << std::endl
+                  << "Could not register service: " << e.what() << std::endl;
         return EXIT_FAILURE;
     }
+
     if (status != android::OK)
     {
         ALOGE("Could not register service");
+        std::cout << "Unable to start:" << std::endl
+                  << "Could not register service" << std::endl;
         return EXIT_FAILURE;
     }
-
     android::hardware::joinRpcThreadpool();
-    ALOGE("Service exited!");
-    return EXIT_FAILURE;
+    ALOGW("Service exited!");
+    return EXIT_SUCCESS;
 }