Split all non-essential extensions into their own separate libraries, named

[free-sw/xcb/libxcb] / src / xcb_in.c

diff --git a/src/xcb_in.c b/src/xcb_in.c
index cf7dbe7..fa13e90 100644 (file)
--- a/src/xcb_in.c
+++ b/src/xcb_in.c
@@ -36,6 +36,9 @@
 #include "xcbext.h"
 #include "xcbint.h"
 
+#define XCBError 0
+#define XCBReply 1
+
 struct event_list {
     XCBGenericEvent *event;
     struct event_list *next;
@@ -85,12 +88,14 @@ static int read_packet(XCBConnection *c)
     memcpy(&genrep, c->in.queue, sizeof(genrep));
 
     /* Compute 32-bit sequence number of this packet. */
-    if((genrep.response_type & 0x7f) != KeymapNotify)
+    if((genrep.response_type & 0x7f) != XCBKeymapNotify)
     {
         int lastread = c->in.request_read;
         c->in.request_read = (lastread & 0xffff0000) | genrep.sequence;
         if(c->in.request_read < lastread)
             c->in.request_read += 0x10000;
+        if(c->in.request_read > c->in.request_expected)
+            c->in.request_expected = c->in.request_read;
 
         if(c->in.request_read != lastread)
         {
@@ -102,7 +107,7 @@ static int read_packet(XCBConnection *c)
             }
             c->in.request_completed = c->in.request_read - 1;
         }
-        if(genrep.response_type != 1) /* not reply: error or event */
+        if(genrep.response_type != XCBReply) /* error or event */
             c->in.request_completed = c->in.request_read; /* XXX: does event/error imply no more replies? */
 
         while(c->in.pending_replies && c->in.pending_replies->request <= c->in.request_completed)
@@ -115,7 +120,7 @@ static int read_packet(XCBConnection *c)
         }
     }
 
-    if(genrep.response_type == 0 || genrep.response_type == 1)
+    if(genrep.response_type == XCBError || genrep.response_type == XCBReply)
     {
         pend = c->in.pending_replies;
         if(pend && pend->request != c->in.request_read)
@@ -123,7 +128,7 @@ static int read_packet(XCBConnection *c)
     }
 
     /* For reply packets, check that the entire packet is available. */
-    if(genrep.response_type == 1)
+    if(genrep.response_type == XCBReply)
     {
         if(pend && pend->workaround == WORKAROUND_GLX_GET_FB_CONFIGS_BUG)
         {
@@ -133,7 +138,7 @@ static int read_packet(XCBConnection *c)
         length += genrep.length * 4;
     }
 
-    buf = malloc(length + (genrep.response_type == 1 ? 0 : sizeof(CARD32)));
+    buf = malloc(length + (genrep.response_type == XCBReply ? 0 : sizeof(CARD32)));
     if(!buf)
         return 0;
     if(_xcb_in_read_block(c, buf, length) <= 0)
@@ -141,12 +146,18 @@ static int read_packet(XCBConnection *c)
         free(buf);
         return 0;
     }
+    if(pend && (pend->flags & XCB_REQUEST_DISCARD_REPLY))
+    {
+        free(buf);
+        return 1;
+    }
 
-    if(genrep.response_type != 1)
+    if(genrep.response_type != XCBReply)
         ((XCBGenericEvent *) buf)->full_sequence = c->in.request_read;
 
     /* reply, or checked error */
-    if(genrep.response_type == 1 || (genrep.response_type == 0 && pend && (pend->flags & XCB_REQUEST_CHECKED)))
+    if( genrep.response_type == XCBReply ||
+       (genrep.response_type == XCBError && pend && (pend->flags & XCB_REQUEST_CHECKED)))
     {
         reader_list *reader;
         struct reply_list *cur = malloc(sizeof(struct reply_list));
@@ -238,12 +249,15 @@ void *XCBWaitForReply(XCBConnection *c, unsigned int request, XCBGenericError **
     if(e)
         *e = 0;
 
+    /* If an error occurred when issuing the request, fail immediately. */
+    if(!request)
+        return 0;
+
     pthread_mutex_lock(&c->iolock);
 
     /* If this request has not been written yet, write it. */
-    if((signed int) (c->out.request_written - request) < 0)
-        if(!_xcb_out_flush(c))
-            goto done; /* error */
+    if(!_xcb_out_flush_to(c, request))
+        goto done; /* error */
 
     for(prev_reader = &c->in.readers; *prev_reader && (*prev_reader)->request <= request; prev_reader = &(*prev_reader)->next)
         if((*prev_reader)->request == request)
@@ -258,7 +272,7 @@ void *XCBWaitForReply(XCBConnection *c, unsigned int request, XCBGenericError **
      * wait for one. */
     while(c->in.request_completed < request &&
             !(c->in.request_read == request && c->in.current_reply))
-        if(!_xcb_conn_wait(c, /*should_write*/ 0, &cond))
+        if(!_xcb_conn_wait(c, &cond, 0, 0))
             goto done;
 
     if(c->in.request_read != request)
@@ -283,7 +297,7 @@ void *XCBWaitForReply(XCBConnection *c, unsigned int request, XCBGenericError **
         ret = head->reply;
         free(head);
 
-        if(((XCBGenericRep *) ret)->response_type == 0) /* X error */
+        if(((XCBGenericRep *) ret)->response_type == XCBError)
         {
             if(e)
                 *e = ret;
@@ -318,7 +332,7 @@ XCBGenericEvent *XCBWaitForEvent(XCBConnection *c)
     pthread_mutex_lock(&c->iolock);
     /* get_event returns 0 on empty list. */
     while(!(ret = get_event(c)))
-        if(!_xcb_conn_wait(c, /*should_write*/ 0, &c->in.event_cond))
+        if(!_xcb_conn_wait(c, &c->in.event_cond, 0, 0))
             break;
 
     wake_up_next_reader(c);