Simpleperf: refactor command system.

Register a callback function to create a new command instance instead of
registering a command instance. Then we can release resources in the
command destructors, and don't need xxxCommandImpl classes any more.

Bug: 19483574
Change-Id: Ibb54892ec0655fd43909347afd72bb08bc8a716c

1 files changed, 2 insertions, 1 deletions

diff --git a/simpleperf/main.cpp b/simpleperf/main.cpp
index 173026eb..93c52e50 100644
--- a/simpleperf/main.cpp
+++ b/simpleperf/main.cpp
@@ -38,12 +38,13 @@ int main(int argc, char** argv) {
     }
   }
 
-  Command* command = Command::FindCommandByName(args[0]);
+  std::unique_ptr<Command> command = CreateCommandInstance(args[0]);
   if (command == nullptr) {
     LOG(ERROR) << "malformed command line: unknown command " << args[0];
     return 1;
   }
   std::string command_name = args[0];
+  args.erase(args.begin());
 
   LOG(DEBUG) << "command '" << command_name << "' starts running";
   bool result = command->Run(args);