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