Changeset 7bd34e5 in mainline for uspace/drv/uhci/utils/hc_synchronizer.c

Timestamp:

2011-01-07T14:40:56Z (13 years ago)

Author:

Jan Vesely <jano.vesely@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

8324b65

Parents:

92f924c8

Message:

Add synchronization via fibril_semaphore

WARNING: fibril_semaphore BREAKS the deadlock detection system
used by fibril synch primitives

File:

• uspace/drv/uhci/utils/hc_synchronizer.c (modified) (3 diffs)

uspace/drv/uhci/utils/hc_synchronizer.c

@@ -1 +1 @@
 #include "hc_synchronizer.h"
 
+void sync_init(sync_value_t *value)
+{
+        assert(value);
+        fibril_semaphore_initialize(&value->done, 0);
+}
+/*----------------------------------------------------------------------------*/
 void sync_wait_for(sync_value_t *value)
 {
         assert( value );
-        value->waiting_fibril = fibril_get_id();
-        uhci_print_verbose("turning off fibril %p.\n", value->waiting_fibril);
-        fibril_switch(FIBRIL_TO_MANAGER);
+        fibril_semaphore_down(&value->done);
 }
 /*----------------------------------------------------------------------------*/
@@ -16 +20 @@
         value->size = size;
         value->result = result;
-        fibril_add_ready(value->waiting_fibril);
+        fibril_semaphore_up(&value->done);
 }
 /*----------------------------------------------------------------------------*/
@@ -25 +29 @@
         assert(value);
         value->result = result;
-        uhci_print_verbose("resuming fibril %p.\n", value->waiting_fibril);
-        fibril_add_ready(value->waiting_fibril);
+        fibril_semaphore_up(&value->done);
 }