diff --git a/main.c b/main.c index ce95de95f0..f928d0d62f 100755 --- a/main.c +++ b/main.c @@ -493,6 +493,8 @@ void gc_collect(void) { // have lost their references in the VM even though they are mounted. gc_collect_root((void**)&MP_STATE_VM(vfs_mount_table), sizeof(mp_vfs_mount_t) / sizeof(mp_uint_t)); + background_callback_gc_collect(); + #if CIRCUITPY_DISPLAYIO displayio_gc_collect(); #endif diff --git a/supervisor/background_callback.h b/supervisor/background_callback.h index 82025f6b7a..535dd656be 100644 --- a/supervisor/background_callback.h +++ b/supervisor/background_callback.h @@ -79,4 +79,9 @@ void background_callback_reset(void); void background_callback_begin_critical_section(void); void background_callback_end_critical_section(void); +/* + * Background callbacks may stop objects from being collected + */ +void background_callback_gc_collect(void); + #endif diff --git a/supervisor/shared/background_callback.c b/supervisor/shared/background_callback.c index e45c9b5c3d..1be3cae2ba 100644 --- a/supervisor/shared/background_callback.c +++ b/supervisor/shared/background_callback.c @@ -24,6 +24,7 @@ * THE SOFTWARE. */ +#include "py/gc.h" #include "py/mpconfig.h" #include "supervisor/background_callback.h" #include "supervisor/shared/tick.h" @@ -105,3 +106,8 @@ void background_callback_reset() { in_background_callback = false; CALLBACK_CRITICAL_END; } + +void background_callback_gc_collect(void) { + background_callback_t *cb = (background_callback_t*)callback_head; + gc_collect_ptr(cb); +}