Introducing basic RCU primitives for lock-less shared data structures

2 files changed, 12 insertions, 1 deletions

diff --git a/sysdep/unix/io-loop.c b/sysdep/unix/io-loop.c
index 3419d9d8..3e3fc31a 100644
--- a/sysdep/unix/io-loop.c
+++ b/sysdep/unix/io-loop.c
@@ -416,6 +416,7 @@ birdloop_free(struct birdloop *loop)
   ASSERT_DIE(loop->links == 0);
   ASSERT_DIE(pthread_equal(pthread_self(), loop->thread_id));
 
+  rcu_birdloop_stop(&loop->rcu);
   pthread_attr_destroy(&loop->thread_attr);
 
   domain_free(loop->time.domain);
@@ -505,6 +506,8 @@ birdloop_main(void *arg)
   timer *t;
   int rv, timeout;
 
+  rcu_birdloop_start(&loop->rcu);
+
   btime loop_begin = current_time();
 
   tmp_init(loop->pool);
@@ -568,4 +571,8 @@ birdloop_main(void *arg)
   return NULL;
 }
 
-
+void
+birdloop_yield(void)
+{
+  usleep(100);
+}
diff --git a/sysdep/unix/io-loop.h b/sysdep/unix/io-loop.h
index ca4322fc..31c40459 100644
--- a/sysdep/unix/io-loop.h
+++ b/sysdep/unix/io-loop.h
@@ -7,6 +7,8 @@
 #ifndef _BIRD_SYSDEP_UNIX_IO_LOOP_H_
 #define _BIRD_SYSDEP_UNIX_IO_LOOP_H_
 
+#include "lib/rcu.h"
+
 struct birdloop
 {
   pool *pool;
@@ -28,6 +30,8 @@ struct birdloop
   pthread_t thread_id;
   pthread_attr_t thread_attr;
 
+  struct rcu_birdloop rcu;
+
   uint links;
 
   void (*stopped)(void *data);