| /* |
| * lws System Message Distribution |
| * |
| * Copyright (C) 2019 - 2020 Andy Green <[email protected]> |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a copy |
| * of this software and associated documentation files (the "Software"), to |
| * deal in the Software without restriction, including without limitation the |
| * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or |
| * sell copies of the Software, and to permit persons to whom the Software is |
| * furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be included in |
| * all copies or substantial portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
| * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS |
| * IN THE SOFTWARE. |
| */ |
| |
| |
| #if defined(LWS_WITH_SECURE_STREAMS) |
| #define LWS_SMD_SS_RX_HEADER_LEN_EFF (LWS_SMD_SS_RX_HEADER_LEN) |
| #else |
| #define LWS_SMD_SS_RX_HEADER_LEN_EFF (0) |
| #endif |
| |
| struct lws_smd_peer; |
| |
| typedef struct lws_smd_msg { |
| lws_dll2_t list; |
| |
| struct lws_smd_peer *exc; |
| |
| lws_usec_t timestamp; |
| lws_smd_class_t _class; |
| |
| uint16_t length; |
| uint16_t refcount; |
| |
| /* message itself is over-allocated after this */ |
| } lws_smd_msg_t; |
| |
| typedef struct lws_smd_peer { |
| lws_dll2_t list; |
| |
| #if defined(LWS_WITH_SECURE_STREAMS) |
| lws_ss_handle_t *ss_handle; /* LSMDT_SECURE_STREAMS */ |
| #endif |
| |
| lws_smd_notification_cb_t cb; /* LSMDT_<other> */ |
| struct lws_context *ctx; |
| void *opaque; |
| |
| /* NULL, or next message we will handle */ |
| lws_smd_msg_t *tail; |
| |
| lws_smd_class_t _class_filter; |
| } lws_smd_peer_t; |
| |
| /* |
| * Manages message distribution |
| * |
| * There is one of these in the lws_context, but the distribution action also |
| * gets involved in delivering to pt event loops individually for SMP case |
| */ |
| |
| typedef struct lws_smd { |
| lws_dll2_owner_t owner_messages; /* lws_smd_msg_t */ |
| lws_mutex_t lock_messages; |
| lws_dll2_owner_t owner_peers; /* lws_smd_peer_t */ |
| lws_mutex_t lock_peers; |
| |
| /* union of peer class filters, suppress creation of msg classes not set */ |
| lws_smd_class_t _class_filter; |
| |
| char delivering; |
| } lws_smd_t; |
| |
| /* check if this tsi has pending messages to deliver */ |
| |
| int |
| lws_smd_message_pending(struct lws_context *ctx); |
| |
| int |
| lws_smd_msg_distribute(struct lws_context *ctx); |
| |
| int |
| _lws_smd_destroy(struct lws_context *ctx); |
| |