Implement xcb_total_read() and xcb_total_written().

Returns raw byte counts that have been read or written to the
xcb_connection_t.

I found it very useful when developing a high level widget toolkit, to
track down inefficient/sub-optimum code that generates a lot of X
protocol traffic.

Signed-off-by: Sam Varshavchik <mrsam@courier-mta.com>

1 files changed, 28 insertions, 0 deletions

diff --git a/src/xcb_conn.c b/src/xcb_conn.c
index 7d09637..8dab658 100644
--- a/src/xcb_conn.c
+++ b/src/xcb_conn.c
@@ -287,6 +287,7 @@ static int write_vec(xcb_connection_t *c, struct iovec **vector, int *count)
         return 0;
     }
 
+    c->out.total_written += n;
     for(; *count; --*count, ++*vector)
     {
         int cur = (*vector)->iov_len;
@@ -528,3 +529,30 @@ int _xcb_conn_wait(xcb_connection_t *c, pthread_cond_t *cond, struct iovec **vec
 
     return ret;
 }
+
+uint64_t xcb_total_read(xcb_connection_t *c)
+{
+    uint64_t n;
+
+    if (xcb_connection_has_error(c))
+        return 0;
+
+    pthread_mutex_lock(&c->iolock);
+    n = c->in.total_read;
+    pthread_mutex_unlock(&c->iolock);
+    return n;
+}
+
+uint64_t xcb_total_written(xcb_connection_t *c)
+{
+    uint64_t n;
+
+    if (xcb_connection_has_error(c))
+        return 0;
+
+    pthread_mutex_lock(&c->iolock);
+    n = c->out.total_written;
+    pthread_mutex_unlock(&c->iolock);
+
+    return n;
+}