Retry: Fixes memory leaks in the eventhandler

runtime/bin/eventhandler_macos.cc

 // Copyright (c) 2012, 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.
 
 #if !defined(DART_IO_DISABLED)
 
 #include "platform/globals.h"
 #if defined(TARGET_OS_MACOS)
 
 #include "bin/eventhandler.h"
@@ skipping 122 matching lines @@
   int status = NO_RETRY_EXPECTED(kevent(kqueue_fd_, &event, 1, NULL, 0, NULL));
   if (status == -1) {
     const int kBufferSize = 1024;
     char error_message[kBufferSize];
     Utils::StrError(errno, error_message, kBufferSize);
     FATAL1("Failed adding interrupt fd to kqueue: %s\n", error_message);
   }
 }
 
 
+static void DeleteDescriptorInfo(void* info) {
+  DescriptorInfo* di = reinterpret_cast<DescriptorInfo*>(info);
+  di->Close();
+  delete di;
+}
+
+
 EventHandlerImplementation::~EventHandlerImplementation() {
+  socket_map_.Clear(DeleteDescriptorInfo);
   VOID_TEMP_FAILURE_RETRY(close(kqueue_fd_));
   VOID_TEMP_FAILURE_RETRY(close(interrupt_fds_[0]));
   VOID_TEMP_FAILURE_RETRY(close(interrupt_fds_[1]));
 }
 
 
 void EventHandlerImplementation::UpdateKQueueInstance(intptr_t old_mask,
                                                       DescriptorInfo *di) {
   intptr_t new_mask = di->Mask();
   if (old_mask != 0 && new_mask == 0) {
@@ skipping 352 matching lines @@
   // The hashmap does not support keys with value 0.
   return dart::Utils::WordHash(fd + 1);
 }
 
 }  // namespace bin
 }  // namespace dart
 
 #endif  // defined(TARGET_OS_MACOS)
 
 #endif  // !defined(DART_IO_DISABLED)