Diff: pal/Source/PAL-Impl/pal_init.c

Revision:

0:dbad57390bd1

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/pal/Source/PAL-Impl/pal_init.c	Sun May 14 18:37:05 2017 +0000
@@ -0,0 +1,75 @@
+/*
+* Copyright (c) 2016 ARM Limited. All rights reserved.
+* 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 "pal.h"
+#include "pal_plat_rtos.h"
+#include "pal_plat_network.h"
+#include "pal_macros.h"
+
+//this variable must be a int32_t for using atomic increment
+static int32_t g_palIntialized = 0;
+
+
+palStatus_t pal_init()
+{
+
+    palStatus_t status = PAL_SUCCESS;
+    int32_t currentInitValue;
+    //  get the return value of g_palIntialized+1 to save it locally
+    currentInitValue = pal_osAtomicIncrement(&g_palIntialized,1);
+    // if increased for the 1st time
+    if (1 == currentInitValue)
+    {
+        DEBUG_PRINT("Init for the 1st time, initializing the modules\r\n");
+        status = pal_plat_RTOSInitialize(NULL);
+        if (PAL_SUCCESS == status)
+        {
+
+            status = pal_plat_socketsInit(NULL);
+            if (PAL_SUCCESS != status)
+            {
+                DEBUG_PRINT("init of network module has failed with status %d\r\n",status);
+            }
+        }
+        else
+        {
+            DEBUG_PRINT("init of RTOS module has failed with status %d\r\n",status);
+        }
+    }
+    // if failed decrees the value of g_palIntialized
+    if (PAL_SUCCESS != status)
+    {
+        pal_plat_socketsTerminate(NULL);
+        pal_plat_RTOSDestroy();
+        pal_osAtomicIncrement(&g_palIntialized, -1);
+    }
+    return status;
+}
+
+
+void pal_destroy()
+{
+    int32_t currentInitValue;
+    // get the current value of g_palIntialized locally
+    currentInitValue = pal_osAtomicIncrement(&g_palIntialized, -1);
+    if (0 == currentInitValue)
+    {
+        DEBUG_PRINT("Destroying modules\r\n");
+        pal_plat_RTOSDestroy();
+        pal_plat_socketsTerminate(NULL);
+    }
+}