From 1b39473993abcc6180657c8d3bd5f9e12e4bc816 Mon Sep 17 00:00:00 2001
From: Maria Matejka <mq@ucw.cz>
Date: Fri, 12 Nov 2021 22:58:40 +0100
Subject: Introducing basic RCU primitives for lock-less shared data structures

---
 sysdep/unix/coroutine.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

(limited to 'sysdep/unix')

diff --git a/sysdep/unix/coroutine.c b/sysdep/unix/coroutine.c
index 4758c056..12ba55d8 100644
--- a/sysdep/unix/coroutine.c
+++ b/sysdep/unix/coroutine.c
@@ -18,6 +18,7 @@
 #include "lib/birdlib.h"
 #include "lib/locking.h"
 #include "lib/coro.h"
+#include "lib/rcu.h"
 #include "lib/resource.h"
 #include "lib/timer.h"
 
@@ -128,6 +129,7 @@ struct coroutine {
   resource r;
   pthread_t id;
   pthread_attr_t attr;
+  struct rcu_coro rcu;
   void (*entry)(void *);
   void *data;
 };
@@ -137,6 +139,7 @@ static _Thread_local _Bool coro_cleaned_up = 0;
 static void coro_free(resource *r)
 {
   struct coroutine *c = (void *) r;
+  rcu_coro_stop(&c->rcu);
   ASSERT_DIE(pthread_equal(pthread_self(), c->id));
   pthread_attr_destroy(&c->attr);
   coro_cleaned_up = 1;
@@ -157,6 +160,7 @@ static void *coro_entry(void *p)
   ASSERT_DIE(c->entry);
 
   this_coro = c;
+  rcu_coro_start(&c->rcu);
 
   c->entry(c->data);
   ASSERT_DIE(coro_cleaned_up);
@@ -190,3 +194,9 @@ struct coroutine *coro_run(pool *p, void (*entry)(void *), void *data)
 
   return c;
 }
+
+void
+coro_yield(void)
+{
+  usleep(100);
+}
-- 
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