Changeset 565 for trunk/kernel/devices/dev_nic.c

Timestamp:

Oct 4, 2018, 11:48:51 PM (6 years ago)

Author:

alain

Message:

Complete restructuration of kernel locks.

File:

• trunk/kernel/devices/dev_nic.c (modified) (4 diffs)

trunk/kernel/devices/dev_nic.c

@@ -99 +99 @@
     core_t * core = thread_ptr->core;
 
+// check thread can yield
+assert( (thread_ptr->busylocks == 0),
+"cannot yield : busylocks = %d\n", thread_ptr->busylocks );
+
 #if DEBUG_DEV_NIC_RX
 uint32_t cycle = (uint32_t)hal_get_cycles();
@@ -133 +137 @@
         dev_pic_enable_irq( core->lid , dev_xp );
 
-        // block on THREAD_BLOCKED_IO condition and deschedule
+        // block client thread on THREAD_BLOCKED_IO
         thread_block( XPTR( local_cxy , thread_ptr ) , THREAD_BLOCKED_IO );
+
+        // deschedule client thread
         sched_yield("client blocked on I/O");
 
@@ -176 +182 @@
     // get local pointer on core running this kernel thead
     core_t * core = thread_ptr->core;
+
+// check thread can yield
+assert( (thread_ptr->busylocks == 0),
+"cannot yield : busylocks = %d\n", thread_ptr->busylocks );
 
 #if DEBUG_DEV_NIC_RX
@@ -211 +221 @@
         dev_pic_enable_irq( core->lid ,dev_xp );
 
-        // block on THREAD_BLOCKED I/O condition and deschedule
+        // block client thread on THREAD_BLOCKED I/O condition
         thread_block( XPTR( local_cxy , thread_ptr ) , THREAD_BLOCKED_IO );
+
+        // deschedule client thread
         sched_yield("client blocked on I/O");