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

runtime/bin/eventhandler_linux.cc

Index: runtime/bin/eventhandler_linux.cc
diff --git a/runtime/bin/eventhandler_linux.cc b/runtime/bin/eventhandler_linux.cc
index 73f2947db7d90f02d2c8f8905a1dd2a86caee36a..4938523eb41f74952dc19756727209a0672ca671 100644
--- a/runtime/bin/eventhandler_linux.cc
+++ b/runtime/bin/eventhandler_linux.cc
@@ -21,7 +21,7 @@
 #include "bin/fdutils.h"
 #include "bin/log.h"
 #include "bin/socket.h"
-#include "platform/hashmap.h"
+#include "platform/signal_blocker.h"
 #include "platform/thread.h"
 #include "platform/utils.h"
 
@@ -44,10 +44,7 @@ static void AddToEpollInstance(intptr_t epoll_fd_,
     FATAL("Illigal port sent to event handler");
   }
   event.data.u64 = port;
-  int status = TEMP_FAILURE_RETRY(epoll_ctl(epoll_fd_,
-                                            EPOLL_CTL_ADD,
-                                            fd,
-                                            &event));
+  int status = epoll_ctl(epoll_fd_, EPOLL_CTL_ADD, fd, &event);
   if (status == -1) {
     // Epoll does not accept the file descriptor. It could be due to
     // already closed file descriptor, or unuspported devices, such
@@ -62,12 +59,12 @@ EventHandlerImplementation::EventHandlerImplementation() : shutdown_(false) {
   // The initial size passed to epoll_create is ignore on newer (>=
   // 2.6.8) Linux versions
   static const int kEpollInitialSize = 64;
-  epoll_fd_ = TEMP_FAILURE_RETRY(epoll_create(kEpollInitialSize));
+  epoll_fd_ = epoll_create(kEpollInitialSize);
   if (epoll_fd_ == -1) {
     FATAL("Failed creating epoll file descriptor");
   }
   FDUtils::SetCloseOnExec(epoll_fd_);
-  timer_fd_ = TEMP_FAILURE_RETRY(timerfd_create(CLOCK_REALTIME, TFD_CLOEXEC));
+  timer_fd_ = timerfd_create(CLOCK_REALTIME, TFD_CLOEXEC);
   if (epoll_fd_ == -1) {
     FATAL("Failed creating timerfd file descriptor");
   }
@@ -75,10 +72,7 @@ EventHandlerImplementation::EventHandlerImplementation() : shutdown_(false) {
   struct epoll_event event;
   event.events = EPOLLIN;
   event.data.u64 = ILLEGAL_PORT;  // Use ILLEGAL_PORT to identify timer-fd.
-  int status = TEMP_FAILURE_RETRY(epoll_ctl(epoll_fd_,
-                                            EPOLL_CTL_ADD,
-                                            timer_fd_,
-                                            &event));
+  int status = epoll_ctl(epoll_fd_, EPOLL_CTL_ADD, timer_fd_, &event);
   if (status == -1) {
     FATAL2(
         "Failed adding timerfd fd(%i) to epoll instance: %i", timer_fd_, errno);