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

Issue 1483823004: EDK: Move {platform_handle,scoped_platform_handle}.* to //mojo/edk/platform. (Closed) Base URL: https://github.com/domokit/mojo.git@master
Patch Set: Created 5 years 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_H_ 5 #ifndef MOJO_EDK_EMBEDDER_PLATFORM_CHANNEL_UTILS_H_
6 #define MOJO_EDK_EMBEDDER_PLATFORM_CHANNEL_UTILS_H_ 6 #define MOJO_EDK_EMBEDDER_PLATFORM_CHANNEL_UTILS_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
11 #include <deque> 11 #include <deque>
12 12
13 #include "mojo/edk/embedder/platform_handle.h" 13 #include "mojo/edk/platform/platform_handle.h"
14 #include "mojo/edk/embedder/scoped_platform_handle.h" 14 #include "mojo/edk/platform/scoped_platform_handle.h"
15 15
16 struct iovec; // Declared in <sys/uio.h>. 16 struct iovec; // Declared in <sys/uio.h>.
17 17
18 namespace mojo { 18 namespace mojo {
19 namespace embedder { 19 namespace embedder {
20 20
21 // The maximum number of handles that can be sent "at once" using 21 // The maximum number of handles that can be sent "at once" using
22 // |PlatformChannelSendmsgWithHandles()|. 22 // |PlatformChannelSendmsgWithHandles()|.
23 // TODO(vtl): This number is taken from ipc/ipc_message_attachment_set.h: 23 // TODO(vtl): This number is taken from ipc/ipc_message_attachment_set.h:
24 // |IPC::MessageAttachmentSet::kMaxDescriptorsPerMessage|. 24 // |IPC::MessageAttachmentSet::kMaxDescriptorsPerMessage|.
25 const size_t kPlatformChannelMaxNumHandles = 128; 25 const size_t kPlatformChannelMaxNumHandles = 128;
26 26
27 // Use these to write to a socket created using |PlatformChannelPair| (or 27 // Use these to write to a socket created using |PlatformChannelPair| (or
28 // equivalent). These are like |write()| and |writev()|, but handle |EINTR| and 28 // equivalent). These are like |write()| and |writev()|, but handle |EINTR| and
29 // never raise |SIGPIPE|. (Note: On Mac, the suppression of |SIGPIPE| is set up 29 // never raise |SIGPIPE|. (Note: On Mac, the suppression of |SIGPIPE| is set up
30 // by |PlatformChannelPair|.) 30 // by |PlatformChannelPair|.)
31 ssize_t PlatformChannelWrite(PlatformHandle h, 31 ssize_t PlatformChannelWrite(platform::PlatformHandle h,
32 const void* bytes, 32 const void* bytes,
33 size_t num_bytes); 33 size_t num_bytes);
34 ssize_t PlatformChannelWritev(PlatformHandle h, 34 ssize_t PlatformChannelWritev(platform::PlatformHandle h,
35 struct iovec* iov, 35 struct iovec* iov,
36 size_t num_iov); 36 size_t num_iov);
37 37
38 // Writes data, and the given set of |PlatformHandle|s (i.e., file descriptors) 38 // Writes data, and the given set of |PlatformHandle|s (i.e., file descriptors)
39 // over the Unix domain socket given by |h| (e.g., created using 39 // over the Unix domain socket given by |h| (e.g., created using
40 // |PlatformChannelPair()|). All the handles must be valid, and there must be at 40 // |PlatformChannelPair()|). All the handles must be valid, and there must be at
41 // least one and at most |kPlatformChannelMaxNumHandles| handles. The return 41 // least one and at most |kPlatformChannelMaxNumHandles| handles. The return
42 // value is as for |sendmsg()|, namely -1 on failure and otherwise the number of 42 // value is as for |sendmsg()|, namely -1 on failure and otherwise the number of
43 // bytes of data sent on success (note that this may not be all the data 43 // bytes of data sent on success (note that this may not be all the data
44 // specified by |iov|). (The handles are not closed, regardless of success or 44 // specified by |iov|). (The handles are not closed, regardless of success or
45 // failure.) 45 // failure.)
46 ssize_t PlatformChannelSendmsgWithHandles(PlatformHandle h, 46 ssize_t PlatformChannelSendmsgWithHandles(
47 struct iovec* iov, 47 platform::PlatformHandle h,
48 size_t num_iov, 48 struct iovec* iov,
49 PlatformHandle* platform_handles, 49 size_t num_iov,
50 size_t num_platform_handles); 50 platform::PlatformHandle* platform_handles,
51 size_t num_platform_handles);
51 52
52 // Wrapper around |recvmsg()|, which will extract any attached file descriptors 53 // Wrapper around |recvmsg()|, which will extract any attached file descriptors
53 // (in the control message) to |ScopedPlatformHandle|s (and append them to 54 // (in the control message) to |ScopedPlatformHandle|s (and append them to
54 // |platform_handles|). (This also handles |EINTR|.) 55 // |platform_handles|). (This also handles |EINTR|.)
55 ssize_t PlatformChannelRecvmsg( 56 ssize_t PlatformChannelRecvmsg(
56 PlatformHandle h, 57 platform::PlatformHandle h,
57 void* buf, 58 void* buf,
58 size_t num_bytes, 59 size_t num_bytes,
59 std::deque<ScopedPlatformHandle>* platform_handles); 60 std::deque<platform::ScopedPlatformHandle>* platform_handles);
60 61
61 } // namespace embedder 62 } // namespace embedder
62 } // namespace mojo 63 } // namespace mojo
63 64
64 #endif // MOJO_EDK_EMBEDDER_PLATFORM_CHANNEL_UTILS_H_ 65 #endif // MOJO_EDK_EMBEDDER_PLATFORM_CHANNEL_UTILS_H_
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