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Side by Side Diff: mojo/edk/embedder/platform_channel_utils_posix.h

Issue 728133002: Update mojo sdk to rev e01f9a49449381a5eb430c1fd88bf2cae73ec35a (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: android + ios gyp fixes Created 6 years, 1 month ago
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1 // Copyright 2014 The Chromium Authors. All rights reserved. 1 // Copyright 2014 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 #ifndef MOJO_EDK_EMBEDDER_PLATFORM_CHANNEL_UTILS_POSIX_H_ 5 #ifndef MOJO_EDK_EMBEDDER_PLATFORM_CHANNEL_UTILS_POSIX_H_
6 #define MOJO_EDK_EMBEDDER_PLATFORM_CHANNEL_UTILS_POSIX_H_ 6 #define MOJO_EDK_EMBEDDER_PLATFORM_CHANNEL_UTILS_POSIX_H_
7 7
8 #include <stddef.h> 8 #include <stddef.h>
9 #include <sys/types.h> // For |ssize_t|. 9 #include <sys/types.h> // For |ssize_t|.
10 10
(...skipping 12 matching lines...) Expand all
23 // |PlatformChannelSendmsgWithHandles()|. 23 // |PlatformChannelSendmsgWithHandles()|.
24 // TODO(vtl): This number is taken from ipc/file_descriptor_set_posix.h: 24 // TODO(vtl): This number is taken from ipc/file_descriptor_set_posix.h:
25 // |FileDescriptorSet::kMaxDescriptorsPerMessage|. Where does it come from? 25 // |FileDescriptorSet::kMaxDescriptorsPerMessage|. Where does it come from?
26 const size_t kPlatformChannelMaxNumHandles = 7; 26 const size_t kPlatformChannelMaxNumHandles = 7;
27 27
28 // Use these to write to a socket created using |PlatformChannelPair| (or 28 // Use these to write to a socket created using |PlatformChannelPair| (or
29 // equivalent). These are like |write()| and |writev()|, but handle |EINTR| and 29 // equivalent). These are like |write()| and |writev()|, but handle |EINTR| and
30 // never raise |SIGPIPE|. (Note: On Mac, the suppression of |SIGPIPE| is set up 30 // never raise |SIGPIPE|. (Note: On Mac, the suppression of |SIGPIPE| is set up
31 // by |PlatformChannelPair|.) 31 // by |PlatformChannelPair|.)
32 MOJO_SYSTEM_IMPL_EXPORT ssize_t 32 MOJO_SYSTEM_IMPL_EXPORT ssize_t
33 PlatformChannelWrite(PlatformHandle h, const void* bytes, size_t num_bytes); 33 PlatformChannelWrite(PlatformHandle h, const void* bytes, size_t num_bytes);
34 MOJO_SYSTEM_IMPL_EXPORT ssize_t 34 MOJO_SYSTEM_IMPL_EXPORT ssize_t
35 PlatformChannelWritev(PlatformHandle h, struct iovec* iov, size_t num_iov); 35 PlatformChannelWritev(PlatformHandle h, struct iovec* iov, size_t num_iov);
36 36
37 // Writes data, and the given set of |PlatformHandle|s (i.e., file descriptors) 37 // Writes data, and the given set of |PlatformHandle|s (i.e., file descriptors)
38 // over the Unix domain socket given by |h| (e.g., created using 38 // over the Unix domain socket given by |h| (e.g., created using
39 // |PlatformChannelPair()|). All the handles must be valid, and there must be at 39 // |PlatformChannelPair()|). All the handles must be valid, and there must be at
40 // least one and at most |kPlatformChannelMaxNumHandles| handles. The return 40 // least one and at most |kPlatformChannelMaxNumHandles| handles. The return
41 // value is as for |sendmsg()|, namely -1 on failure and otherwise the number of 41 // value is as for |sendmsg()|, namely -1 on failure and otherwise the number of
42 // bytes of data sent on success (note that this may not be all the data 42 // bytes of data sent on success (note that this may not be all the data
43 // specified by |iov|). (The handles are not closed, regardless of success or 43 // specified by |iov|). (The handles are not closed, regardless of success or
44 // failure.) 44 // failure.)
45 MOJO_SYSTEM_IMPL_EXPORT ssize_t 45 MOJO_SYSTEM_IMPL_EXPORT ssize_t
46 PlatformChannelSendmsgWithHandles(PlatformHandle h, 46 PlatformChannelSendmsgWithHandles(PlatformHandle h,
47 struct iovec* iov, 47 struct iovec* iov,
48 size_t num_iov, 48 size_t num_iov,
49 PlatformHandle* platform_handles, 49 PlatformHandle* platform_handles,
50 size_t num_platform_handles); 50 size_t num_platform_handles);
51 51
52 // TODO(vtl): Remove this once I've switched things over to 52 // TODO(vtl): Remove this once I've switched things over to
53 // |PlatformChannelSendmsgWithHandles()|. 53 // |PlatformChannelSendmsgWithHandles()|.
54 // Sends |PlatformHandle|s (i.e., file descriptors) over the Unix domain socket 54 // Sends |PlatformHandle|s (i.e., file descriptors) over the Unix domain socket
55 // (e.g., created using PlatformChannelPair|). (These will be sent in a single 55 // (e.g., created using PlatformChannelPair|). (These will be sent in a single
56 // message having one null byte of data and one control message header with all 56 // message having one null byte of data and one control message header with all
57 // the file descriptors.) All of the handles must be valid, and there must be at 57 // the file descriptors.) All of the handles must be valid, and there must be at
58 // most |kPlatformChannelMaxNumHandles| (and at least one handle). Returns true 58 // most |kPlatformChannelMaxNumHandles| (and at least one handle). Returns true
59 // on success, in which case it closes all the handles. 59 // on success, in which case it closes all the handles.
60 MOJO_SYSTEM_IMPL_EXPORT bool PlatformChannelSendHandles(PlatformHandle h, 60 MOJO_SYSTEM_IMPL_EXPORT bool PlatformChannelSendHandles(PlatformHandle h,
61 PlatformHandle* handles, 61 PlatformHandle* handles,
62 size_t num_handles); 62 size_t num_handles);
63 63
64 // Wrapper around |recvmsg()|, which will extract any attached file descriptors 64 // Wrapper around |recvmsg()|, which will extract any attached file descriptors
65 // (in the control message) to |PlatformHandle|s (and append them to 65 // (in the control message) to |PlatformHandle|s (and append them to
66 // |platform_handles|). (This also handles |EINTR|.) 66 // |platform_handles|). (This also handles |EINTR|.)
67 MOJO_SYSTEM_IMPL_EXPORT ssize_t 67 MOJO_SYSTEM_IMPL_EXPORT ssize_t
68 PlatformChannelRecvmsg(PlatformHandle h, 68 PlatformChannelRecvmsg(PlatformHandle h,
69 void* buf, 69 void* buf,
70 size_t num_bytes, 70 size_t num_bytes,
71 std::deque<PlatformHandle>* platform_handles); 71 std::deque<PlatformHandle>* platform_handles);
72 72
73 } // namespace embedder 73 } // namespace embedder
74 } // namespace mojo 74 } // namespace mojo
75 75
76 #endif // MOJO_EDK_EMBEDDER_PLATFORM_CHANNEL_UTILS_POSIX_H_ 76 #endif // MOJO_EDK_EMBEDDER_PLATFORM_CHANNEL_UTILS_POSIX_H_
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