Changeset ae03552e in mainline

Timestamp:

2017-10-07T16:39:45Z (7 years ago)

Author:

Ondřej Hlavatý <aearsis@…>

Branches:

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

Children:

a0be5d0

Parents:

e9e24f2

Message:

hcd: get rid of async_usleep

File:

• uspace/lib/usbhost/src/hcd.c (modified) (5 diffs)

uspace/lib/usbhost/src/hcd.c

@@ -248 +248 @@
 
 typedef struct {
-        volatile unsigned done;
+        fibril_mutex_t done_mtx;
+        fibril_condvar_t done_cv;
+        unsigned done;
         int ret;
         size_t size;
@@ -258 +260 @@
         assert(d);
         d->ret = ret;
+        d->size = size;
+        fibril_mutex_lock(&d->done_mtx);
         d->done = 1;
-        d->size = size;
+        fibril_condvar_broadcast(&d->done_cv);
+        fibril_mutex_unlock(&d->done_mtx);
 }
 
@@ -267 +272 @@
         assert(data);
         d->ret = ret;
+        fibril_mutex_lock(&d->done_mtx);
         d->done = 1;
+        fibril_condvar_broadcast(&d->done_cv);
+        fibril_mutex_unlock(&d->done_mtx);
 }
 
@@ -277 +285 @@
         assert(hcd);
         sync_data_t sd = { .done = 0, .ret = EBUSY, .size = size };
+        fibril_mutex_initialize(&sd.done_mtx);
+        fibril_condvar_initialize(&sd.done_cv);
 
         const int ret = hcd_send_batch(hcd, target, dir, data, size, setup_data,
@@ -284 +294 @@
                 return ret;
 
-        while (!sd.done) {
-                async_usleep(1000);
-        }
+        fibril_mutex_lock(&sd.done_mtx);
+        while (!sd.done)
+                fibril_condvar_wait(&sd.done_cv, &sd.done_mtx);
+        fibril_mutex_unlock(&sd.done_mtx);
 
         if (sd.ret == EOK)