Move signal_blocker to platform and use it by default in TEMP_FAILURE_RETRY.

runtime/bin/eventhandler_macos.h

 // 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.
 
 #ifndef BIN_EVENTHANDLER_MACOS_H_
 #define BIN_EVENTHANDLER_MACOS_H_
 
 #if !defined(BIN_EVENTHANDLER_H_)
 #error Do not include eventhandler_macos.h directly; use eventhandler.h instead.
 #endif
 
-#include <unistd.h>
+#include <errno.h>
 #include <sys/event.h>  // NOLINT
 #include <sys/socket.h>
+#include <unistd.h>
 
 #include "platform/hashmap.h"
+#include "platform/signal_blocker.h"
 
 
 namespace dart {
 namespace bin {
 
 class InterruptMessage {
  public:
   intptr_t id;
   Dart_Port dart_port;
   int64_t data;
@@ skipping 10 matching lines @@
         tokens_(8) {
     ASSERT(fd_ != -1);
   }
 
   bool HasReadEvent();
   bool HasWriteEvent();
 
   void Close() {
     port_ = 0;
     mask_ = 0;
-    close(fd_);
+    VOID_TEMP_FAILURE_RETRY(close(fd_));
     fd_ = -1;
   }
 
   bool IsListeningSocket() { return (mask_ & (1 << kListeningSocket)) != 0; }
 
   void SetPortAndMask(Dart_Port port, intptr_t mask) {
     ASSERT(fd_ != -1);
     port_ = port;
     mask_ = mask;
   }
@@ skipping 55 matching lines @@
   TimeoutQueue timeout_queue_;
   bool shutdown_;
   int interrupt_fds_[2];
   int kqueue_fd_;
 };
 
 }  // namespace bin
 }  // namespace dart
 
 #endif  // BIN_EVENTHANDLER_MACOS_H_