refactor: change methods ENTER|EXIT critical (FreeRTOS#1140)

refactor: change methods ENTER|EXIT critical

The read and write of BaseType_t are atomic for a number of ports
and therefore, do not require taskENTER_CRITICAL/taskEXIT_CRITICAL.
This PR introduces portBASE_TYPE_ENTER_CRITICAL and
portBASE_TYPE_EXIT_CRITICAL which default to  taskENTER_CRITICAL
and taskEXIT_CRITICAL. The APIs that read/write BaseType_t are updated
to use these new macros. 

The next change would to be to define portBASE_TYPE_ENTER_CRITICAL and
portBASE_TYPE_EXIT_CRITICAL to nothing for ports where BaseType_t 
read and write are atomic.

Signed-off-by: guilherme giacomo simoes <trintaeoitogc@gmail.com>

Author: GuilhermeGiacomoSimoes

.github/third_party_tools.md

@@ -11,4 +11,4 @@ team.
 | Tool | Website | Getting Started |
 |------|---------|-----------------|
 | Code Sonar | [Link](https://codesecure.com/our-products/codesonar/) | [Link](https://github.com/CodeSecure-SE/FreeRTOS-Kernel/blob/main/examples/codesonar/README.md) |
-| Coverity | [Link](https://www.synopsys.com/software-integrity/security-testing/static-analysis-sast.html) | [Link](../examples/coverity/README.md) |
+| Coverity | [Link](https://www.blackduck.com/static-analysis-tools-sast/coverity.html) | [Link](../examples/coverity/README.md) |

examples/coverity/README.md

@@ -1,6 +1,6 @@
 # MISRA Compliance for FreeRTOS-Kernel
 FreeRTOS-Kernel is MISRA C:2012 compliant. This directory contains a project to
-run [Synopsys Coverity](https://www.synopsys.com/software-integrity/security-testing/static-analysis-sast.html)
+run [Synopsys Coverity](https://www.blackduck.com/static-analysis-tools-sast/coverity.html)
 for checking MISRA compliance.
 
 > **Note**

include/portable.h

@@ -85,6 +85,14 @@
     #define portARCH_NAME    NULL
 #endif
 
+#ifndef portBASE_TYPE_ENTER_CRITICAL
+    #define portBASE_TYPE_ENTER_CRITICAL()    taskENTER_CRITICAL()
+#endif
+
+#ifndef portBASE_TYPE_EXIT_CRITICAL
+    #define portBASE_TYPE_EXIT_CRITICAL()    taskEXIT_CRITICAL()
+#endif
+
 #ifndef configSTACK_DEPTH_TYPE
     #define configSTACK_DEPTH_TYPE    StackType_t
 #endif

queue.c

@@ -2202,11 +2202,11 @@ UBaseType_t uxQueueMessagesWaiting( const QueueHandle_t xQueue )
 
     configASSERT( xQueue );
 
-    taskENTER_CRITICAL();
+    portBASE_TYPE_ENTER_CRITICAL();
     {
         uxReturn = ( ( Queue_t * ) xQueue )->uxMessagesWaiting;
     }
-    taskEXIT_CRITICAL();
+    portBASE_TYPE_EXIT_CRITICAL();
 
     traceRETURN_uxQueueMessagesWaiting( uxReturn );
 
@@ -2223,11 +2223,11 @@ UBaseType_t uxQueueSpacesAvailable( const QueueHandle_t xQueue )
 
     configASSERT( pxQueue );
 
-    taskENTER_CRITICAL();
+    portBASE_TYPE_ENTER_CRITICAL();
     {
         uxReturn = ( UBaseType_t ) ( pxQueue->uxLength - pxQueue->uxMessagesWaiting );
     }
-    taskEXIT_CRITICAL();
+    portBASE_TYPE_EXIT_CRITICAL();
 
     traceRETURN_uxQueueSpacesAvailable( uxReturn );
 

tasks.c

@@ -2623,14 +2623,14 @@ static void prvInitialiseNewTask( TaskFunction_t pxTaskCode,
 
         traceENTER_uxTaskPriorityGet( xTask );
 
-        taskENTER_CRITICAL();
+        portBASE_TYPE_ENTER_CRITICAL();
         {
             /* If null is passed in here then it is the priority of the task
              * that called uxTaskPriorityGet() that is being queried. */
             pxTCB = prvGetTCBFromHandle( xTask );
             uxReturn = pxTCB->uxPriority;
         }
-        taskEXIT_CRITICAL();
+        portBASE_TYPE_EXIT_CRITICAL();
 
         traceRETURN_uxTaskPriorityGet( uxReturn );
 
@@ -2697,14 +2697,14 @@ static void prvInitialiseNewTask( TaskFunction_t pxTaskCode,
 
         traceENTER_uxTaskBasePriorityGet( xTask );
 
-        taskENTER_CRITICAL();
+        portBASE_TYPE_ENTER_CRITICAL();
         {
             /* If null is passed in here then it is the base priority of the task
              * that called uxTaskBasePriorityGet() that is being queried. */
             pxTCB = prvGetTCBFromHandle( xTask );
             uxReturn = pxTCB->uxBasePriority;
         }
-        taskEXIT_CRITICAL();
+        portBASE_TYPE_EXIT_CRITICAL();
 
         traceRETURN_uxTaskBasePriorityGet( uxReturn );
 
@@ -3040,12 +3040,12 @@ static void prvInitialiseNewTask( TaskFunction_t pxTaskCode,
 
         traceENTER_vTaskCoreAffinityGet( xTask );
 
-        taskENTER_CRITICAL();
+        portBASE_TYPE_ENTER_CRITICAL();
         {
             pxTCB = prvGetTCBFromHandle( xTask );
             uxCoreAffinityMask = pxTCB->uxCoreAffinityMask;
         }
-        taskEXIT_CRITICAL();
+        portBASE_TYPE_EXIT_CRITICAL();
 
         traceRETURN_vTaskCoreAffinityGet( uxCoreAffinityMask );
 

timers.c

@@ -601,7 +601,7 @@
         traceENTER_xTimerGetReloadMode( xTimer );
 
         configASSERT( xTimer );
-        taskENTER_CRITICAL();
+        portBASE_TYPE_ENTER_CRITICAL();
         {
             if( ( pxTimer->ucStatus & tmrSTATUS_IS_AUTORELOAD ) == 0U )
             {
@@ -614,7 +614,7 @@
                 xReturn = pdTRUE;
             }
         }
-        taskEXIT_CRITICAL();
+        portBASE_TYPE_EXIT_CRITICAL();
 
         traceRETURN_xTimerGetReloadMode( xReturn );
 
@@ -1169,7 +1169,7 @@
         configASSERT( xTimer );
 
         /* Is the timer in the list of active timers? */
-        taskENTER_CRITICAL();
+        portBASE_TYPE_ENTER_CRITICAL();
         {
             if( ( pxTimer->ucStatus & tmrSTATUS_IS_ACTIVE ) == 0U )
             {
@@ -1180,7 +1180,7 @@
                 xReturn = pdTRUE;
             }
         }
-        taskEXIT_CRITICAL();
+        portBASE_TYPE_EXIT_CRITICAL();
 
         traceRETURN_xTimerIsTimerActive( xReturn );