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Side by Side Diff: mojo/public/c/system/functions.h

Issue 345463003: Mojo: MojoWaitFlags -> MojoHandleSignals. (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/src
Patch Set: Created 6 years, 6 months 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 // This file contains basic functions common to different Mojo system APIs. 5 // This file contains basic functions common to different Mojo system APIs.
6 // 6 //
7 // Note: This header should be compilable as C. 7 // Note: This header should be compilable as C.
8 8
9 #ifndef MOJO_PUBLIC_C_SYSTEM_FUNCTIONS_H_ 9 #ifndef MOJO_PUBLIC_C_SYSTEM_FUNCTIONS_H_
10 #define MOJO_PUBLIC_C_SYSTEM_FUNCTIONS_H_ 10 #define MOJO_PUBLIC_C_SYSTEM_FUNCTIONS_H_
(...skipping 24 matching lines...) Expand all
35 // Returns: 35 // Returns:
36 // |MOJO_RESULT_OK| on success. 36 // |MOJO_RESULT_OK| on success.
37 // |MOJO_RESULT_INVALID_ARGUMENT| if |handle| is not a valid handle. 37 // |MOJO_RESULT_INVALID_ARGUMENT| if |handle| is not a valid handle.
38 // 38 //
39 // Concurrent operations on |handle| may succeed (or fail as usual) if they 39 // Concurrent operations on |handle| may succeed (or fail as usual) if they
40 // happen before the close, be cancelled with result |MOJO_RESULT_CANCELLED| if 40 // happen before the close, be cancelled with result |MOJO_RESULT_CANCELLED| if
41 // they properly overlap (this is likely the case with |MojoWait()|, etc.), or 41 // they properly overlap (this is likely the case with |MojoWait()|, etc.), or
42 // fail with |MOJO_RESULT_INVALID_ARGUMENT| if they happen after. 42 // fail with |MOJO_RESULT_INVALID_ARGUMENT| if they happen after.
43 MOJO_SYSTEM_EXPORT MojoResult MojoClose(MojoHandle handle); 43 MOJO_SYSTEM_EXPORT MojoResult MojoClose(MojoHandle handle);
44 44
45 // Waits on the given handle until the state indicated by |flags| is satisfied 45 // Waits on the given handle until a signal indicated by |signals| is satisfied
46 // or until |deadline| has passed. 46 // or until |deadline| has passed.
47 // 47 //
48 // Returns: 48 // Returns:
49 // |MOJO_RESULT_OK| if some flag in |flags| was satisfied (or is already 49 // |MOJO_RESULT_OK| if some signal in |signals| was satisfied (or is already
50 // satisfied). 50 // satisfied).
51 // |MOJO_RESULT_INVALID_ARGUMENT| if |handle| is not a valid handle (e.g., if 51 // |MOJO_RESULT_INVALID_ARGUMENT| if |handle| is not a valid handle (e.g., if
52 // it has already been closed). 52 // it has already been closed).
53 // |MOJO_RESULT_DEADLINE_EXCEEDED| if the deadline has passed without any of 53 // |MOJO_RESULT_DEADLINE_EXCEEDED| if the deadline has passed without any of
54 // the flags being satisfied. 54 // the signals being satisfied.
55 // |MOJO_RESULT_FAILED_PRECONDITION| if it is or becomes impossible that any 55 // |MOJO_RESULT_FAILED_PRECONDITION| if it is or becomes impossible that any
56 // flag in |flags| will ever be satisfied. 56 // signal in |signals| will ever be satisfied.
57 // 57 //
58 // If there are multiple waiters (on different threads, obviously) waiting on 58 // If there are multiple waiters (on different threads, obviously) waiting on
59 // the same handle and flag and that flag becomes set, all waiters will be 59 // the same handle and signal, and that signal becomes is satisfied, all waiters
60 // awoken. 60 // will be awoken.
61 MOJO_SYSTEM_EXPORT MojoResult MojoWait(MojoHandle handle, 61 MOJO_SYSTEM_EXPORT MojoResult MojoWait(MojoHandle handle,
62 MojoWaitFlags flags, 62 MojoHandleSignals signals,
63 MojoDeadline deadline); 63 MojoDeadline deadline);
64 64
65 // Waits on |handles[0]|, ..., |handles[num_handles-1]| for at least one of them 65 // Waits on |handles[0]|, ..., |handles[num_handles-1]| for at least one of them
66 // to satisfy the state indicated by |flags[0]|, ..., |flags[num_handles-1]|, 66 // to satisfy a signal indicated by |signals[0]|, ..., |signals[num_handles-1]|,
67 // respectively, or until |deadline| has passed. 67 // respectively, or until |deadline| has passed.
68 // 68 //
69 // Returns: 69 // Returns:
70 // The index |i| (from 0 to |num_handles-1|) if |handle[i]| satisfies 70 // The index |i| (from 0 to |num_handles-1|) if |handle[i]| satisfies a signal
71 // |flags[i]|. 71 // from |signals[i]|.
72 // |MOJO_RESULT_INVALID_ARGUMENT| if some |handle[i]| is not a valid handle 72 // |MOJO_RESULT_INVALID_ARGUMENT| if some |handle[i]| is not a valid handle
73 // (e.g., if it has already been closed). 73 // (e.g., if it has already been closed).
74 // |MOJO_RESULT_DEADLINE_EXCEEDED| if the deadline has passed without any of 74 // |MOJO_RESULT_DEADLINE_EXCEEDED| if the deadline has passed without any of
75 // handles satisfying any of its flags. 75 // handles satisfying any of its signals.
76 // |MOJO_RESULT_FAILED_PRECONDITION| if it is or becomes impossible that SOME 76 // |MOJO_RESULT_FAILED_PRECONDITION| if it is or becomes impossible that SOME
77 // |handle[i]| will ever satisfy any of its flags |flags[i]|. 77 // |handle[i]| will ever satisfy any of the signals in |signals[i]|.
78 MOJO_SYSTEM_EXPORT MojoResult MojoWaitMany(const MojoHandle* handles, 78 MOJO_SYSTEM_EXPORT MojoResult MojoWaitMany(const MojoHandle* handles,
79 const MojoWaitFlags* flags, 79 const MojoHandleSignals* signals,
80 uint32_t num_handles, 80 uint32_t num_handles,
81 MojoDeadline deadline); 81 MojoDeadline deadline);
82 82
83 #ifdef __cplusplus 83 #ifdef __cplusplus
84 } // extern "C" 84 } // extern "C"
85 #endif 85 #endif
86 86
87 #endif // MOJO_PUBLIC_C_SYSTEM_FUNCTIONS_H_ 87 #endif // MOJO_PUBLIC_C_SYSTEM_FUNCTIONS_H_
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