Adding upstream version 86.0.1.upstream/86.0.1upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 63 insertions, 0 deletions

diff --git a/ipc/chromium/src/base/eintr_wrapper.h b/ipc/chromium/src/base/eintr_wrapper.h
new file mode 100644
index 0000000000..c4a8b1a0ad
--- /dev/null
+++ b/ipc/chromium/src/base/eintr_wrapper.h
@@ -0,0 +1,63 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// This provides a wrapper around system calls which may be interrupted by a
+// signal and return EINTR. See man 7 signal.
+//
+// On Windows, this wrapper macro does nothing because there are no
+// signals.
+//
+// Don't wrap close calls in HANDLE_EINTR. Use IGNORE_EINTR if the return
+// value of close is significant. See http://crbug.com/269623.
+
+#ifndef BASE_EINTR_WRAPPER_H_
+#define BASE_EINTR_WRAPPER_H_
+
+#include "build/build_config.h"
+
+#if defined(OS_POSIX)
+
+#  include <errno.h>
+
+#  define HANDLE_EINTR(x)                                     \
+    ({                                                        \
+      decltype(x) eintr_wrapper_result;                       \
+      do {                                                    \
+        eintr_wrapper_result = (x);                           \
+      } while (eintr_wrapper_result == -1 && errno == EINTR); \
+      eintr_wrapper_result;                                   \
+    })
+
+#  define IGNORE_EINTR(x)                                   \
+    ({                                                      \
+      decltype(x) eintr_wrapper_result;                     \
+      do {                                                  \
+        eintr_wrapper_result = (x);                         \
+        if (eintr_wrapper_result == -1 && errno == EINTR) { \
+          eintr_wrapper_result = 0;                         \
+        }                                                   \
+      } while (0);                                          \
+      eintr_wrapper_result;                                 \
+    })
+
+#  define HANDLE_RV_EINTR(x)                   \
+    ({                                         \
+      decltype(x) eintr_wrapper_result;        \
+      do {                                     \
+        eintr_wrapper_result = (x);            \
+      } while (eintr_wrapper_result == EINTR); \
+      eintr_wrapper_result;                    \
+    })
+
+#else
+
+#  define HANDLE_EINTR(x) (x)
+#  define IGNORE_EINTR(x) (x)
+#  define HANDLE_RV_EINTR(x) (x)
+
+#endif  // OS_POSIX
+
+#endif  // !BASE_EINTR_WRAPPER_H_