Import Mbed OS hard-float snapshot

connectivity/nanostack/nanostack-hal-mbed-cmsis-rtos/ns_event_loop_mutex.c

@@ -0,0 +1,91 @@
+/*
+ * Copyright (c) 2018, Arm Limited and affiliates.
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * 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 "eventOS_scheduler.h"
+
+#include "ns_event_loop_mutex.h"
+
+#ifdef MBED_CONF_RTOS_PRESENT
+#include "mbed_assert.h"
+#include "cmsis.h"
+#include "cmsis_os2.h"
+#include "mbed_rtos_storage.h"
+#include "ns_trace.h"
+
+
+#define TRACE_GROUP "evlm"
+
+static mbed_rtos_storage_mutex_t event_mutex;
+static const osMutexAttr_t event_mutex_attr = {
+    .name = "nanostack_event_mutex",
+    .attr_bits = osMutexRecursive | osMutexPrioInherit | osMutexRobust,
+    .cb_mem = &event_mutex,
+    .cb_size = sizeof event_mutex,
+};
+static osMutexId_t event_mutex_id;
+static osThreadId_t event_mutex_owner_id = NULL;
+static uint32_t owner_count = 0;
+
+void eventOS_scheduler_mutex_wait(void)
+{
+    osMutexAcquire(event_mutex_id, osWaitForever);
+    if (0 == owner_count) {
+        event_mutex_owner_id = osThreadGetId();
+    }
+    owner_count++;
+}
+
+void eventOS_scheduler_mutex_release(void)
+{
+    owner_count--;
+    if (0 == owner_count) {
+        event_mutex_owner_id = NULL;
+    }
+    osMutexRelease(event_mutex_id);
+}
+
+uint8_t eventOS_scheduler_mutex_is_owner(void)
+{
+    return osThreadGetId() == event_mutex_owner_id ? 1 : 0;
+}
+
+void ns_event_loop_mutex_init(void)
+{
+    event_mutex_id = osMutexNew(&event_mutex_attr);
+    MBED_ASSERT(event_mutex_id != NULL);
+}
+
+#else
+
+void eventOS_scheduler_mutex_wait(void)
+{
+}
+
+void eventOS_scheduler_mutex_release(void)
+{
+}
+
+uint8_t eventOS_scheduler_mutex_is_owner(void)
+{
+    return 1;
+}
+
+void ns_event_loop_mutex_init(void)
+{
+}
+
+#endif // MBED_CONF_RTOS_PRESENT