diff options
Diffstat (limited to 'libxcb/src/xcb_in.c')
| -rw-r--r-- | libxcb/src/xcb_in.c | 119 |
1 files changed, 80 insertions, 39 deletions
diff --git a/libxcb/src/xcb_in.c b/libxcb/src/xcb_in.c index 1ad51e331..a49efd5db 100644 --- a/libxcb/src/xcb_in.c +++ b/libxcb/src/xcb_in.c @@ -57,6 +57,7 @@ #endif
struct event_list {
+ uint64_t sequence;
xcb_generic_event_t *event;
struct event_list *next;
};
@@ -80,6 +81,17 @@ typedef struct reader_list { struct reader_list *next;
} reader_list;
+static void remove_finished_readers(reader_list **prev_reader, uint64_t completed)
+{
+ while(*prev_reader && XCB_SEQUENCE_COMPARE((*prev_reader)->request, <=, completed))
+ {
+ /* If you don't have what you're looking for now, you never
+ * will. Wake up and leave me alone. */
+ pthread_cond_signal((*prev_reader)->data);
+ *prev_reader = (*prev_reader)->next;
+ }
+}
+
static int read_packet(xcb_connection_t *c)
{
xcb_generic_reply_t genrep;
@@ -114,7 +126,7 @@ static int read_packet(xcb_connection_t *c) c->in.current_reply = 0;
c->in.current_reply_tail = &c->in.current_reply;
}
- c->in.request_completed = c->in.request_read - 1;
+ c->in.request_completed = c->in.event_responses_completed = c->in.request_read - 1;
}
while(c->in.pending_replies &&
@@ -129,7 +141,12 @@ static int read_packet(xcb_connection_t *c) }
if(genrep.response_type == XCB_ERROR)
- c->in.request_completed = c->in.request_read;
+ c->in.request_completed = c->in.event_responses_completed = c->in.request_read;
+ else if(genrep.response_type == XCB_REPLY)
+ c->in.event_responses_completed = c->in.request_read;
+
+ remove_finished_readers(&c->in.readers, c->in.request_completed);
+ remove_finished_readers(&c->in.event_readers, c->in.event_responses_completed);
}
if(genrep.response_type == XCB_ERROR || genrep.response_type == XCB_REPLY)
@@ -194,7 +211,6 @@ static int read_packet(xcb_connection_t *c) if( genrep.response_type == XCB_REPLY ||
(genrep.response_type == XCB_ERROR && pend && (pend->flags & XCB_REQUEST_CHECKED)))
{
- reader_list *reader;
struct reply_list *cur = malloc(sizeof(struct reply_list));
if(!cur)
{
@@ -206,17 +222,8 @@ static int read_packet(xcb_connection_t *c) cur->next = 0;
*c->in.current_reply_tail = cur;
c->in.current_reply_tail = &cur->next;
- for(reader = c->in.readers;
- reader &&
- XCB_SEQUENCE_COMPARE(reader->request, <=, c->in.request_read);
- reader = reader->next)
- {
- pthread_cond_signal(reader->data);
- if(reader->request == c->in.request_read)
- {
- break;
- }
- }
+ if(c->in.readers && c->in.readers->request == c->in.request_read)
+ pthread_cond_signal(c->in.readers->data);
return 1;
}
@@ -228,11 +235,15 @@ static int read_packet(xcb_connection_t *c) free(buf);
return 0;
}
+ event->sequence = c->in.request_read;
event->event = buf;
event->next = 0;
*c->in.events_tail = event;
c->in.events_tail = &event->next;
- pthread_cond_signal(&c->in.event_cond);
+ if(c->in.event_readers)
+ pthread_cond_signal(c->in.event_readers->data);
+ else
+ pthread_cond_signal(&c->in.event_cond);
return 1; /* I have something for you... */
}
@@ -356,6 +367,26 @@ static int poll_for_reply(xcb_connection_t *c, uint64_t request, void **reply, x return 1;
}
+static void insert_reader(reader_list **prev_reader, reader_list *reader, uint64_t request, pthread_cond_t *cond)
+{
+ while(*prev_reader && XCB_SEQUENCE_COMPARE((*prev_reader)->request, <=, request))
+ prev_reader = &(*prev_reader)->next;
+ reader->request = request;
+ reader->data = cond;
+ reader->next = *prev_reader;
+ *prev_reader = reader;
+}
+
+static void remove_reader(reader_list **prev_reader, reader_list *reader)
+{
+ while(*prev_reader && XCB_SEQUENCE_COMPARE((*prev_reader)->request, <=, reader->request))
+ if(*prev_reader == reader)
+ {
+ *prev_reader = (*prev_reader)->next;
+ break;
+ }
+}
+
static void *wait_for_reply(xcb_connection_t *c, uint64_t request, xcb_generic_error_t **e)
{
void *ret = 0;
@@ -365,35 +396,14 @@ static void *wait_for_reply(xcb_connection_t *c, uint64_t request, xcb_generic_e {
pthread_cond_t cond = PTHREAD_COND_INITIALIZER;
reader_list reader;
- reader_list **prev_reader;
-
- for(prev_reader = &c->in.readers;
- *prev_reader &&
- XCB_SEQUENCE_COMPARE((*prev_reader)->request, <=, request);
- prev_reader = &(*prev_reader)->next)
- {
- /* empty */;
- }
- reader.request = request;
- reader.data = &cond;
- reader.next = *prev_reader;
- *prev_reader = &reader;
+
+ insert_reader(&c->in.readers, &reader, request, &cond);
while(!poll_for_reply(c, request, &ret, e))
if(!_xcb_conn_wait(c, &cond, 0, 0))
break;
- for(prev_reader = &c->in.readers;
- *prev_reader &&
- XCB_SEQUENCE_COMPARE((*prev_reader)->request, <=, request);
- prev_reader = &(*prev_reader)->next)
- {
- if(*prev_reader == &reader)
- {
- *prev_reader = (*prev_reader)->next;
- break;
- }
- }
+ remove_reader(&c->in.readers, &reader);
pthread_cond_destroy(&cond);
}
@@ -540,6 +550,35 @@ xcb_generic_event_t *xcb_poll_for_event(xcb_connection_t *c) return ret;
}
+static xcb_generic_event_t *get_event_until(xcb_connection_t *c, uint64_t request)
+{
+ if(c->in.events && XCB_SEQUENCE_COMPARE(c->in.events->sequence, <=, request))
+ return get_event(c);
+ return 0;
+}
+
+xcb_generic_event_t *xcb_wait_for_event_until(xcb_connection_t *c, unsigned int request)
+{
+ pthread_cond_t cond = PTHREAD_COND_INITIALIZER;
+ reader_list reader;
+ xcb_generic_event_t *ret;
+ if(c->has_error)
+ return 0;
+ pthread_mutex_lock(&c->iolock);
+
+ insert_reader(&c->in.event_readers, &reader, widen(c, request), &cond);
+
+ while(!(ret = get_event_until(c, reader.request)) && XCB_SEQUENCE_COMPARE(c->in.event_responses_completed, <, reader.request))
+ if(!_xcb_conn_wait(c, &cond, 0, 0))
+ break;
+
+ remove_reader(&c->in.event_readers, &reader);
+ pthread_cond_destroy(&cond);
+ _xcb_in_wake_up_next_reader(c);
+ pthread_mutex_unlock(&c->iolock);
+ return ret;
+}
+
xcb_generic_error_t *xcb_request_check(xcb_connection_t *c, xcb_void_cookie_t cookie)
{
uint64_t request;
@@ -610,6 +649,8 @@ void _xcb_in_wake_up_next_reader(xcb_connection_t *c) int pthreadret;
if(c->in.readers)
pthreadret = pthread_cond_signal(c->in.readers->data);
+ else if(c->in.event_readers)
+ pthreadret = pthread_cond_signal(c->in.event_readers->data);
else
pthreadret = pthread_cond_signal(&c->in.event_cond);
assert(pthreadret == 0);
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