Cleanup app snapshots on isolate/vm exit.

runtime/bin/extensions_android.cc

Index: runtime/bin/extensions_android.cc
diff --git a/runtime/bin/extensions_android.cc b/runtime/bin/extensions_android.cc
index 85b20aebbe0597170d2f1b4c3778fa4a90e10f23..fc34dc3b5da1524b1f32184f8a185b313303da69 100644
--- a/runtime/bin/extensions_android.cc
+++ b/runtime/bin/extensions_android.cc
@@ -8,6 +8,8 @@
 #include "bin/extensions.h"
 #include <dlfcn.h>  // NOLINT
 
+#include "platform/assert.h"
+
 namespace dart {
 namespace bin {
 
@@ -17,7 +19,7 @@ const char* kIsolateSnapshotDataSymbolName = "_kDartIsolateSnapshotData";
 const char* kIsolateSnapshotInstructionsSymbolName =
     "_kDartIsolateSnapshotInstructions";
 
-void* Extensions::LoadExtensionLibrary(const char* library_file) {
+void* Extensions::LoadLibrary(const char* library_file) {
   return dlopen(library_file, RTLD_LAZY);
 }
 
@@ -26,6 +28,11 @@ void* Extensions::ResolveSymbol(void* lib_handle, const char* symbol) {
   return dlsym(lib_handle, symbol);
 }
 
+void Extensions::UnloadLibrary(void* lib_handle) {

[zra, 2017/02/15 04:41:40]

Two newlines between functions.

[rmacnak, 2017/02/16 03:05:30]

Done.

+  int result = dlclose(lib_handle);

[zra, 2017/02/15 04:41:40]

Do you need to dlerror() to clear the errors first?

[rmacnak, 2017/02/16 03:05:30]

Yes, done.

+  ASSERT(result == 0);
+}
+
 Dart_Handle Extensions::GetError() {
   const char* err_str = dlerror();
   if (err_str != NULL) {