Warning gets printed if alloc/free was called from an IRQ

memory_pool.c

@@ -6,6 +6,10 @@
 #include "memory_pool.h"
 #include "utils.h"
 
+#ifdef OS
+#include <cmsis_gcc.h>
+#endif
+
 MP *mp_init(uint8_t *p, uint32_t size) {
     ASSERT_BAD_ALIGN(p); // check for alignment
     size = FLOOR_TO_4(size); // force alignment on size
@@ -60,6 +64,13 @@ uint8_t *mp_alloc(MP *mp, uint32_t size) {
     // make the allocation from the beginning of the smallest suitable (large enough)
     // contiguous block
 
+#ifdef OS
+    // warn if allocation is made from an IRQ
+    if (__get_IPSR()) {
+        MSG("Alloc from IRQ!\n");
+    }
+#endif
+
     // round size to make it divisible by 4
     size = CEIL_TO_4(size);
 
@@ -141,6 +152,13 @@ void mp_free(MP *mp, const uint8_t *p) {
         return;
     }
 
+#ifdef OS
+    // warn if memory block is getting released from an IRQ
+    if (__get_IPSR()) {
+        MSG("Free from IRQ!\n");
+    }
+#endif
+
     // look for registry record
     bool success = false;
     MPAllocRecord *recIter = mp->blockRegistry;