Handle EINTR on all IO operations

runtime/platform/globals.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 PLATFORM_GLOBALS_H_
 #define PLATFORM_GLOBALS_H_
 
 // __STDC_FORMAT_MACROS has to be defined to enable platform independent printf.
 #ifndef __STDC_FORMAT_MACROS
 #define __STDC_FORMAT_MACROS
@@ skipping 21 matching lines @@
 #include <float.h>
 #include <limits.h>
 #include <math.h>
 #include <openssl/bn.h>
 #include <stdarg.h>
 #include <stddef.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #include <sys/types.h>
+#include <unistd.h>
 
 #if defined(_WIN32)
 #include "platform/c99_support_win.h"
 #include "platform/inttypes_support_win.h"
 #endif
 
 
 // Target OS detection.
 // for more information on predefined macros:
 //   - http://msdn.microsoft.com/en-us/library/b0084kay.aspx
@@ skipping 43 matching lines @@
 static inline void USE(T) { }
 
 
 // On Windows the reentrent version of strtok is called
 // strtok_s. Unify on the posix name strtok_r.
 #if defined(TARGET_OS_WINDOWS)
 #define snprintf _snprintf
 #define strtok_r strtok_s
 #endif
 
+#if !defined(TARGET_OS_WINDOWS) && !defined(TEMP_FAILURE_RETRY)
+// TEMP_FAILURE_RETRY is defined in unistd.h on some platforms. The
+// definition below is copied from Linux and adapted to avoid lint
+// errors (type long int changed to int64_t and do/while split on
+// separate lines with body in {}s).
+# define TEMP_FAILURE_RETRY(expression)                                        \
+    ({ int64_t __result;                                                       \
+       do {                                                                    \
+         __result = (int64_t) (expression);                                    \
+       } while (__result == -1L && errno == EINTR);                            \
+       __result; })
+#endif
+
 #endif  // PLATFORM_GLOBALS_H_