michael@0: // Copyright (c) 2009 The Chromium Authors. All rights reserved.
michael@0: // Use of this source code is governed by a BSD-style license that can be
michael@0: // found in the LICENSE file.
michael@0: 
michael@0: // This provides a wrapper around system calls which may be interrupted by a
michael@0: // signal and return EINTR. See man 7 signal.
michael@0: //
michael@0: // On Windows, this wrapper macro does nothing.
michael@0: 
michael@0: #ifndef BASE_EINTR_WRAPPER_H_
michael@0: #define BASE_EINTR_WRAPPER_H_
michael@0: 
michael@0: #include "build/build_config.h"
michael@0: 
michael@0: #if defined(OS_POSIX)
michael@0: 
michael@0: #include <errno.h>
michael@0: 
michael@0: #define HANDLE_EINTR(x) ({ \
michael@0:   typeof(x) __eintr_result__; \
michael@0:   do { \
michael@0:     __eintr_result__ = x; \
michael@0:   } while (__eintr_result__ == -1 && errno == EINTR); \
michael@0:   __eintr_result__;\
michael@0: })
michael@0: 
michael@0: #else
michael@0: 
michael@0: #define HANDLE_EINTR(x) x
michael@0: 
michael@0: #endif  // OS_POSIX
michael@0: 
michael@0: #endif  // !BASE_EINTR_WRAPPER_H_