Import Mbed OS hard-float snapshot

events/source/equeue_posix.c

@@ -0,0 +1,122 @@
+/*
+ * Implementation for Posix compliant platforms
+ *
+ * Copyright (c) 2016-2019 ARM Limited
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#include "events/internal/equeue_platform.h"
+
+#if defined(EQUEUE_PLATFORM_POSIX)
+
+#include <time.h>
+#include <sys/time.h>
+#include <errno.h>
+
+
+// Tick operations
+void equeue_tick_init(void)
+{
+}
+
+unsigned equeue_tick(void)
+{
+    struct timeval tv;
+    gettimeofday(&tv, 0);
+    return (unsigned)(tv.tv_sec * 1000 + tv.tv_usec / 1000);
+}
+
+
+// Mutex operations
+int equeue_mutex_create(equeue_mutex_t *m)
+{
+    pthread_mutexattr_t attr;
+    pthread_mutexattr_init(&attr);
+    pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_RECURSIVE);
+    return pthread_mutex_init(m, &attr);
+}
+
+void equeue_mutex_destroy(equeue_mutex_t *m)
+{
+    pthread_mutex_destroy(m);
+}
+
+void equeue_mutex_lock(equeue_mutex_t *m)
+{
+    pthread_mutex_lock(m);
+}
+
+void equeue_mutex_unlock(equeue_mutex_t *m)
+{
+    pthread_mutex_unlock(m);
+}
+
+
+// Semaphore operations
+int equeue_sema_create(equeue_sema_t *s)
+{
+    int err = pthread_mutex_init(&s->mutex, 0);
+    if (err) {
+        return err;
+    }
+
+    err = pthread_cond_init(&s->cond, 0);
+    if (err) {
+        return err;
+    }
+
+    s->signal = false;
+    return 0;
+}
+
+void equeue_sema_destroy(equeue_sema_t *s)
+{
+    pthread_cond_destroy(&s->cond);
+    pthread_mutex_destroy(&s->mutex);
+}
+
+void equeue_sema_signal(equeue_sema_t *s)
+{
+    pthread_mutex_lock(&s->mutex);
+    s->signal = true;
+    pthread_cond_signal(&s->cond);
+    pthread_mutex_unlock(&s->mutex);
+}
+
+bool equeue_sema_wait(equeue_sema_t *s, int ms)
+{
+    pthread_mutex_lock(&s->mutex);
+    if (!s->signal) {
+        if (ms < 0) {
+            pthread_cond_wait(&s->cond, &s->mutex);
+        } else {
+            struct timeval tv;
+            gettimeofday(&tv, 0);
+
+            struct timespec ts = {
+                .tv_sec = ms / 1000 + tv.tv_sec,
+                .tv_nsec = ms * 1000000 + tv.tv_usec * 1000,
+            };
+
+            pthread_cond_timedwait(&s->cond, &s->mutex, &ts);
+        }
+    }
+
+    bool signal = s->signal;
+    s->signal = false;
+    pthread_mutex_unlock(&s->mutex);
+
+    return signal;
+}
+
+#endif