author | Tero Marttila <terom@fixme.fi> |
Thu, 28 Aug 2008 01:34:14 +0300 | |
changeset 44 | 03a7e064f833 |
parent 43 | e5b714190dee |
child 48 | 1c67f512779b |
permissions | -rw-r--r-- |
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#ifndef MEMCACHE_REQ_H |
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#define MEMCACHE_REQ_H |
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#include <sys/queue.h> |
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#include "../memcache.h" |
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#include "connection.h" |
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struct memcache_req { |
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// the memcache context that we belong to |
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struct memcache *mc; |
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// the command to execute |
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enum memcache_command cmd_type; |
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// the reply we have received, or MEMCACHE_REPLY_INVALID |
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enum memcache_reply reply_type; |
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// our key/obj |
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struct memcache_key key; |
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struct memcache_obj obj; |
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struct memcache_buf buf; |
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// flags to indicate if we have valid obj/buf data |
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char have_obj, have_buf; |
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// our state |
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enum memcache_req_state state; |
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// our user callback argument |
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void *cb_arg; |
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// the conn |
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struct memcache_connection *conn; |
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// we are a member of struct memcache_server.req_queue |
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TAILQ_ENTRY(memcache_req) reqqueue_node; |
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}; |
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/* |
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* Allocate and return a new req, or NULL if unsuccesfull. |
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*/ |
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struct memcache_req *memcache_req_alloc (struct memcache *mc, enum memcache_command cmd_type, const struct memcache_key *key, const struct memcache_obj *obj, const struct memcache_buf *buf, void *cb_arg); |
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/* |
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* The request has been queued. |
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*/ |
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void memcache_req_queued (struct memcache_req *req); |
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/* |
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* The request is being sent. |
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*/ |
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void memcache_req_send (struct memcache_req *req); |
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/* |
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* The reply has been received, although if the respones also contains data, that will be notified separately. |
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* |
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* If the response doesn't contain any data, req_done will be called after this is. Otherwise, this will be called |
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* first, followed by zero or more calls to req_data, followed by req_reply/RPL_END + req_done. |
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* |
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* Note that no req data will not be available when this is first called, only once req_data/req_done is called. |
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*/ |
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void memcache_req_recv (struct memcache_req *req, enum memcache_reply reply_type); |
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/* |
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* Some amount of reply data has been received. This may be called between the req_reply/MEMCACHE_RPL_VALUE and |
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* req_reply/MEMCACHE_RPL_END + req_done notifications. |
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* |
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* Note that this is not always called, it is possible that one might have: |
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* memcache_req_reply(req, MEMCACHE_RPL_VALUE) |
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* memcache_req_reply(req, MEMCACHE_RPL_END) |
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* memcache_req_done(req) |
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* |
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* This will happen if both the value and the end replies are received in the same chunk. |
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* |
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* Note also that replies may have zero-length entries, in which case req_data will never be called either. |
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*/ |
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void memcache_req_data (struct memcache_req *req); |
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/* |
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* The request was sent and is now done, and is not associated with the connection anymore. |
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* |
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* This will be called before req_reply/req_data, but not before/after req_error. |
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*/ |
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void memcache_req_done (struct memcache_req *req); |
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/* |
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* An error occurred, and the request must be abandoned. This will assume that the req is not active or enqueued |
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* anymore, and the req should not be accessed by memcache_* code after this. |
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*/ |
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void memcache_req_error (struct memcache_req *req); |
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/* |
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* Free an unused req. Should always be called by the user, not via internal means. |
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*/ |
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void memcache_req_free (struct memcache_req *req); |
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#endif /* MEMCACHE_REQ_H */ |