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1 // Copyright (c) 2009 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2009 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "base/sync_socket.h" | 5 #include "base/sync_socket.h" |
6 | 6 |
7 #include <errno.h> | 7 #include <errno.h> |
8 #include <limits.h> | 8 #include <limits.h> |
9 #include <stdio.h> | 9 #include <stdio.h> |
10 #include <sys/types.h> | 10 #include <sys/types.h> |
11 #include <sys/ioctl.h> | 11 #include <sys/ioctl.h> |
12 #include <sys/socket.h> | 12 #include <sys/socket.h> |
13 | 13 |
14 #include "base/atomicops.h" | |
15 #include "base/file_util.h" | 14 #include "base/file_util.h" |
16 #include "base/logging.h" | 15 #include "base/logging.h" |
17 | 16 |
18 | 17 |
19 namespace base { | 18 namespace base { |
20 | 19 |
21 namespace { | 20 namespace { |
22 // To avoid users sending negative message lengths to Send/Receive | 21 // To avoid users sending negative message lengths to Send/Receive |
23 // we clamp message lengths, which are size_t, to no more than INT_MAX. | 22 // we clamp message lengths, which are size_t, to no more than INT_MAX. |
24 const size_t kMaxMessageLength = static_cast<size_t>(INT_MAX); | 23 const size_t kMaxMessageLength = static_cast<size_t>(INT_MAX); |
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102 size_t SyncSocket::Peek() { | 101 size_t SyncSocket::Peek() { |
103 int number_chars; | 102 int number_chars; |
104 if (-1 == ioctl(handle_, FIONREAD, &number_chars)) { | 103 if (-1 == ioctl(handle_, FIONREAD, &number_chars)) { |
105 // If there is an error in ioctl, signal that the channel would block. | 104 // If there is an error in ioctl, signal that the channel would block. |
106 return 0; | 105 return 0; |
107 } | 106 } |
108 return (size_t) number_chars; | 107 return (size_t) number_chars; |
109 } | 108 } |
110 | 109 |
111 } // namespace base | 110 } // namespace base |
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