Fix a number of issues with the process handling

runtime/bin/main.cc

 // Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include <stdlib.h>
 #include <string.h>
 #include <stdio.h>
 
 #include "include/dart_api.h"
 
 #include "bin/builtin.h"
 #include "bin/dartutils.h"
 #include "bin/file.h"
 #include "bin/globals.h"
+#include "bin/platform.h"
 
 // snapshot_buffer points to a snapshot if we link in a snapshot otherwise
 // it is initialized to NULL.
 extern const uint8_t* snapshot_buffer;
 
 
 // Global state that indicates whether pprof symbol information is
 // to be generated or not.
 static const char* generate_pprof_symbols_filename = NULL;
 
@@ skipping 219 matching lines @@
   }
   return false;
 }
 
 
 int main(int argc, char** argv) {
   char* script_name;
   CommandLineOptions vm_options(argc);
   CommandLineOptions dart_options(argc);
 
+  // Perform platform specific initialization.
+  if (!Platform::Initialize()) {
+    fprintf(stderr, "Initialization failed\n");
+  }
+
   // Parse command line arguments.
   if (ParseArguments(argc,
                      argv,
                      &vm_options,
                      &script_name,
                      &dart_options) < 0) {
     PrintUsage();
     return 255;
   }
 
@@ skipping 77 matching lines @@
     return 255;  // Indicates we encountered an error.
   }
   free(canonical_script_name);
   Dart_ExitScope();
   // Dump symbol information for the profiler.
   DumpPprofSymbolInfo();
   // Shutdown the isolate.
   Dart_ShutdownIsolate();
   return 0;
 }