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py/runtime: make __main__ preallocate to a configurable size #15

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Merged
merged 1 commit into from
Mar 25, 2025
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py/runtime: make __main__ preallocate to a configurable size #15

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5 changes: 5 additions & 0 deletions py/mpconfig.h
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Original file line number Diff line number Diff line change
Expand Up @@ -259,6 +259,11 @@
#define MICROPY_LOADED_MODULES_DICT_SIZE (3)
#endif

// Initial size of __main__ dict
#ifndef MICROPY_MAIN_DICT_SIZE
#define MICROPY_MAIN_DICT_SIZE (1)
#endif

// Whether realloc/free should be passed allocated memory region size
// You must enable this if MICROPY_MEM_STATS is enabled
#ifndef MICROPY_MALLOC_USES_ALLOCATED_SIZE
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2 changes: 1 addition & 1 deletion py/runtime.c
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Expand Up @@ -105,7 +105,7 @@ void mp_init(void) {
mp_obj_dict_init(&MP_STATE_VM(mp_loaded_modules_dict), MICROPY_LOADED_MODULES_DICT_SIZE);

// initialise the __main__ module
mp_obj_dict_init(&MP_STATE_VM(dict_main), 1);
mp_obj_dict_init(&MP_STATE_VM(dict_main), MICROPY_MAIN_DICT_SIZE);
mp_obj_dict_store(MP_OBJ_FROM_PTR(&MP_STATE_VM(dict_main)), MP_OBJ_NEW_QSTR(MP_QSTR___name__), MP_OBJ_NEW_QSTR(MP_QSTR___main__));

// locals = globals for outer module (see Objects/frameobject.c/PyFrame_New())
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