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Use sequence number ranges in pending replies 

This allows optimizing adjacent pending replies with the same flags, and
will help support default flags for a range of future requests.

Commit by Josh Triplett and Jamey Sharp.
This commit is contained in:
Jamey Sharp 2008-03-14 20:18:52 -07:00
parent 027b59fbbe
commit 3012334957
1 changed files with 7 additions and 4 deletions
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11
src/xcb_in.c
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@ -52,7 +52,8 @@ struct reply_list {
};
typedef struct pending_reply {
unsigned int request;
unsigned int first_request;
unsigned int last_request;
enum workarounds workaround;
int flags;
struct pending_reply *next;
@ -112,7 +113,7 @@ static int read_packet(xcb_connection_t *c)
}
while(c->in.pending_replies &&
XCB_SEQUENCE_COMPARE (c->in.pending_replies->request, <=, c->in.request_completed))
XCB_SEQUENCE_COMPARE (c->in.pending_replies->last_request, <=, c->in.request_completed))
{
pending_reply *oldpend = c->in.pending_replies;
c->in.pending_replies = oldpend->next;
@ -128,7 +129,9 @@ static int read_packet(xcb_connection_t *c)
if(genrep.response_type == XCB_ERROR || genrep.response_type == XCB_REPLY)
{
pend = c->in.pending_replies;
if(pend && pend->request != c->in.request_read)
if(pend &&
(XCB_SEQUENCE_COMPARE(c->in.request_read, <, pend->first_request) ||
XCB_SEQUENCE_COMPARE(c->in.request_read, >, pend->last_request)))
pend = 0;
}
@ -506,7 +509,7 @@ int _xcb_in_expect_reply(xcb_connection_t *c, unsigned int request, enum workaro
_xcb_conn_shutdown(c);
return 0;
}
pend->request = request;
pend->first_request = pend->last_request = request;
pend->workaround = workaround;
pend->flags = flags;
pend->next = 0;