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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_CONFIGURATION_H_ | 5 #ifndef MOJO_EDK_EMBEDDER_CONFIGURATION_H_ |
6 #define MOJO_EDK_EMBEDDER_CONFIGURATION_H_ | 6 #define MOJO_EDK_EMBEDDER_CONFIGURATION_H_ |
7 | 7 |
8 #include <stddef.h> | 8 #include <stddef.h> |
9 #include <stdint.h> | 9 #include <stdint.h> |
10 | 10 |
11 namespace mojo { | 11 namespace mojo { |
12 namespace edk { | 12 namespace edk { |
13 | 13 |
14 // A set of constants that the Mojo system internally uses. These values should | 14 // A set of constants that the Mojo system internally uses. These values should |
15 // be consistent across all processes on the same system. | 15 // be consistent across all processes on the same system. |
16 // | 16 // |
17 // In general, there should be no need to change these values from their | 17 // In general, there should be no need to change these values from their |
18 // defaults. However, if you do change them, you must do so before | 18 // defaults. However, if you do change them, you must do so before |
19 // initialization. | 19 // initialization. |
20 struct Configuration { | 20 struct Configuration { |
21 // Maximum number of open (Mojo) handles. The default is 1,000,000. | 21 // Maximum number of open (Mojo) handles. The default is 1,000,000. |
22 // | 22 // |
23 // TODO(vtl): This doesn't count "live" handles, some of which may live in | 23 // TODO(vtl): This doesn't count "live" handles, some of which may live in |
24 // messages. | 24 // messages. |
25 size_t max_handle_table_size; | 25 size_t max_handle_table_size; |
26 | 26 |
27 // Maximum number of active memory mappings. The default is 1,000,000. | 27 // Maximum number of active memory mappings. The default is 1,000,000. |
28 size_t max_mapping_table_sze; | 28 size_t max_mapping_table_sze; |
29 | 29 |
30 // Upper limit of |MojoWaitMany()|'s |num_handles|. The default is 1,000,000. | |
31 // Must be same as or smaller than |max_handle_table_size|. | |
32 size_t max_wait_many_num_handles; | |
33 | |
34 // Maximum data size of messages sent over message pipes, in bytes. The | 30 // Maximum data size of messages sent over message pipes, in bytes. The |
35 // default is 4MB. | 31 // default is 4MB. |
36 size_t max_message_num_bytes; | 32 size_t max_message_num_bytes; |
37 | 33 |
38 // Maximum number of handles that can be attached to messages sent over | 34 // Maximum number of handles that can be attached to messages sent over |
39 // message pipes. The default is 10,000. | 35 // message pipes. The default is 10,000. |
40 size_t max_message_num_handles; | 36 size_t max_message_num_handles; |
41 | 37 |
42 // Maximum capacity of a data pipe, in bytes. The default is 256MB. This value | 38 // Maximum capacity of a data pipe, in bytes. The default is 256MB. This value |
43 // must fit into a |uint32_t|. WARNING: If you bump it closer to 2^32, you | 39 // must fit into a |uint32_t|. WARNING: If you bump it closer to 2^32, you |
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60 // TODO(vtl): Set this hard limit appropriately (e.g., higher on 64-bit). | 56 // TODO(vtl): Set this hard limit appropriately (e.g., higher on 64-bit). |
61 // (This will also entail some auditing to make sure I'm not messing up my | 57 // (This will also entail some auditing to make sure I'm not messing up my |
62 // checks anywhere.) | 58 // checks anywhere.) |
63 size_t max_shared_memory_num_bytes; | 59 size_t max_shared_memory_num_bytes; |
64 }; | 60 }; |
65 | 61 |
66 } // namespace edk | 62 } // namespace edk |
67 } // namespace mojo | 63 } // namespace mojo |
68 | 64 |
69 #endif // MOJO_EDK_EMBEDDER_CONFIGURATION_H_ | 65 #endif // MOJO_EDK_EMBEDDER_CONFIGURATION_H_ |
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