[Feature] Support pvPortRealloc #1315

examples/coverity/FreeRTOSConfig.h

@@ -72,6 +72,7 @@
 
 #define configSUPPORT_STATIC_ALLOCATION              1
 #define configSUPPORT_DYNAMIC_ALLOCATION             1
+#define configSUPPORT_HEAP_REALLOC                   0
 #define configTOTAL_HEAP_SIZE                        4096U
 #define configAPPLICATION_ALLOCATED_HEAP             1
 #define configSTACK_ALLOCATION_FROM_SEPARATE_HEAP    0

examples/template_configuration/FreeRTOSConfig.h

@@ -283,6 +283,11 @@
  * https://www.freertos.org/Static_Vs_Dynamic_Memory_Allocation.html. */
 #define configSUPPORT_DYNAMIC_ALLOCATION             1
 
+/* Set configSUPPORT_HEAP_REALLOC to 1 to include FreeRTOS API functions
+ * that support reallocating memory blocks in the build.  Set to 0 to exclude
+ * realloc support from the build.  Defaults to 0 if left undefined. */
+#define configSUPPORT_HEAP_REALLOC                   0
+
 /* Sets the total size of the FreeRTOS heap, in bytes, when heap_1.c, heap_2.c
  * or heap_4.c are included in the build.  This value is defaulted to 4096 bytes
  * but it must be tailored to each application.  Note the heap will appear in

include/FreeRTOS.h

@@ -2840,6 +2840,14 @@
     #define configSUPPORT_DYNAMIC_ALLOCATION    1
 #endif
 
+#ifndef configSUPPORT_HEAP_REALLOC
+    #define configSUPPORT_HEAP_REALLOC    0
+#endif
+
+#if ( ( configSUPPORT_HEAP_REALLOC > 0 ) && ( configSUPPORT_DYNAMIC_ALLOCATION != 1 ) )
+    #error configSUPPORT_HEAP_REALLOC cannot be used without dynamic allocation, but configSUPPORT_DYNAMIC_ALLOCATION is not set to 1.
+#endif
+
 #if ( ( configUSE_STATS_FORMATTING_FUNCTIONS > 0 ) && ( configSUPPORT_DYNAMIC_ALLOCATION != 1 ) )
     #error configUSE_STATS_FORMATTING_FUNCTIONS cannot be used without dynamic allocation, but configSUPPORT_DYNAMIC_ALLOCATION is not set to 1.
 #endif

include/portable.h

@@ -189,6 +189,10 @@ void vPortGetHeapStats( HeapStats_t * pxHeapStats );
 void * pvPortMalloc( size_t xWantedSize ) PRIVILEGED_FUNCTION;
 void * pvPortCalloc( size_t xNum,
                      size_t xSize ) PRIVILEGED_FUNCTION;
+#if ( configSUPPORT_HEAP_REALLOC == 1 )
+void *pvPortRealloc( void *pv,
+                     size_t xWantedSize ) PRIVILEGED_FUNCTION;
+#endif
 void vPortFree( void * pv ) PRIVILEGED_FUNCTION;
 void vPortInitialiseBlocks( void ) PRIVILEGED_FUNCTION;
 size_t xPortGetFreeHeapSize( void ) PRIVILEGED_FUNCTION;