refactored gc_jd_queue_data, faster mutex_unlock

[debian/gnuradio] / gcell / src / include / gc_jd_queue_data.h

diff --git a/gcell/src/include/gc_jd_queue_data.h b/gcell/src/include/gc_jd_queue_data.h
index d48591bd2e0101ba0cd997f7ae90bb6af8825c6c..e5fa874990fb0bbbfdd11619ee9a205b723dc1a4 100644 (file)
--- a/gcell/src/include/gc_jd_queue_data.h
+++ b/gcell/src/include/gc_jd_queue_data.h
@@ -1,6 +1,6 @@
 /* -*- c++ -*- */
 /*
- * Copyright 2007 Free Software Foundation, Inc.
+ * Copyright 2007,2008 Free Software Foundation, Inc.
  * 
  * This file is part of GNU Radio
  * 
@@ -36,13 +36,31 @@ __GC_BEGIN_DECLS
  *
  * FIXME make it lock free ;)  For now, use a spin lock.
  */
-typedef struct gc_jd_queue
+
+typedef struct gc_jd_q_links
 {
   gc_eaddr_t   head _AL16;
   gc_eaddr_t   tail _AL16;
+} gc_jd_q_links_t;
+
+typedef struct gc_jd_q_mutex
+{
   uint32_t     mutex;          // libsync mutex (spin lock)
-} gc_jd_queue_t;
+  uint32_t     _pad[31];       // pad to cache line so we can use putlluc on SPE
+} _AL128 gc_jd_q_mutex_t;
 
+typedef struct gc_jd_q_flag
+{
+  uint32_t     flag;           // host writes this after enqueuing
+  uint32_t     _pad[31];       // pad to cache line
+} _AL128 gc_jd_q_flag_t;
+
+typedef struct gc_jd_queue
+{
+  gc_jd_q_links_t      l;
+  gc_jd_q_mutex_t      m;
+  gc_jd_q_flag_t       f;
+} _AL128 gc_jd_queue_t;
 
 __GC_END_DECLS