furi memory managment (#177)

* memory managment calls now forwarded to freertos heap

* memory managment tests

* local target test compability

* rename heap.c file to heap_4.c for local target and explicity init heap in single thread context

* rebase BlockLink_t struct

* check mutex in local heap

Co-authored-by: aanper <mail@s3f.ru>

core/api-basic/memmgr.c

@@ -0,0 +1,51 @@
+#include "memmgr.h"
+#include <string.h>
+
+extern void* pvPortMalloc(size_t xSize);
+extern void vPortFree(void* pv);
+extern size_t xPortGetFreeHeapSize(void);
+extern size_t xPortGetMinimumEverFreeHeapSize(void);
+
+void* malloc(size_t size) {
+    return pvPortMalloc(size);
+}
+
+void free(void* ptr) {
+    vPortFree(ptr);
+}
+
+void* realloc(void* ptr, size_t size) {
+    if(size == 0) {
+        vPortFree(ptr);
+        return NULL;
+    }
+
+    void* p;
+    p = pvPortMalloc(size);
+    if(p) {
+        // TODO implement secure realloc
+        // insecure, but will do job in our case
+        if(ptr != NULL) {
+            memcpy(p, ptr, size);
+            vPortFree(ptr);
+        }
+    }
+    return p;
+}
+
+void* calloc(size_t count, size_t size) {
+    void* ptr = pvPortMalloc(count * size);
+    if(ptr) {
+        // zero the memory
+        memset(ptr, 0, count * size);
+    }
+    return ptr;
+}
+
+size_t memmgr_get_free_heap(void) {
+    return xPortGetFreeHeapSize();
+}
+
+size_t memmgr_get_minimum_free_heap(void) {
+    return xPortGetMinimumEverFreeHeapSize();
+}

core/api-basic/memmgr.h

@@ -0,0 +1,13 @@
+#pragma once
+#include <stddef.h>
+
+// define for test case "link against furi memmgr"
+#define FURI_MEMMGR_GUARD 1
+
+void* malloc(size_t size);
+void free(void* ptr);
+void* realloc(void* ptr, size_t size);
+void* calloc(size_t count, size_t size);
+
+size_t memmgr_get_free_heap(void);
+size_t memmgr_get_minimum_free_heap(void);