MicroPython: Switch C++ allocation mode in boot.py.

micropython/modules/cppmem/cppmem.cpp

@@ -105,14 +105,4 @@ void operator delete(void *p, __unused std::size_t n) noexcept { stat_free(p); }
 
 void operator delete[](void *p, __unused std::size_t n) noexcept { stat_free(p); }
 
-#endif
-
-namespace {
-    struct SwitchAllocatorMode {
-        public:
-            SwitchAllocatorMode() {
-                mode = MICROPYTHON;
-            }
-    };
-    SwitchAllocatorMode switchallocatormode __attribute__ ((init_priority (65535)));
-}
+#endif

micropython/modules/micropython-badger2040w.cmake

@@ -40,6 +40,7 @@ include(motor/micropython)
 # include(micropython-common)
 
 include(modules_py/modules_py)
+copy_module(boot.py)
 
 # C++ Magic Memory
 include(cppmem/micropython)

micropython/modules/micropython-common.cmake

@@ -48,6 +48,7 @@ if(PICO_BOARD STREQUAL "pico_w")
     copy_module(automation.py)
     copy_module(inventor.py)
 endif()
+copy_module(boot.py)
 
 # Must call `enable_ulab()` to enable
 include(micropython-common-ulab)

micropython/modules/micropython-picow_cosmic_unicorn.cmake

@@ -35,6 +35,7 @@ include(micropython-common-ulab)
 enable_ulab()
 
 include(modules_py/modules_py)
+copy_module(boot.py)
 
 # C++ Magic Memory
 include(cppmem/micropython)

micropython/modules/micropython-picow_enviro.cmake

@@ -45,6 +45,7 @@ include(motor/micropython)
 # include(micropython-common)
 
 include(modules_py/modules_py)
+copy_module(boot.py)
 
 # C++ Magic Memory
 include(cppmem/micropython)

micropython/modules/micropython-picow_galactic_unicorn.cmake

@@ -35,6 +35,7 @@ include(micropython-common-ulab)
 enable_ulab()
 
 include(modules_py/modules_py)
+copy_module(boot.py)
 
 # C++ Magic Memory
 include(cppmem/micropython)

micropython/modules/micropython-picow_inky_frame.cmake

@@ -46,6 +46,7 @@ include(motor/micropython)
 include(modules_py/modules_py)
 
 copy_module(inky_frame.py)
+copy_module(boot.py)
 
 # C++ Magic Memory
 include(cppmem/micropython)

micropython/modules/micropython-tufty2040.cmake

@@ -40,6 +40,7 @@ include(micropython-common-ulab)
 enable_ulab()
 
 include(modules_py/modules_py)
+copy_module(boot.py)
 
 # C++ Magic Memory
 include(cppmem/micropython)

micropython/modules_py/boot.py

@@ -0,0 +1,3 @@
+import cppmem
+# Switch C++ memory allocations to use MicroPython's heap
+cppmem.set_mode(cppmem.MICROPYTHON)