py/objgenerator: Eliminate need for mp_obj_gen_wrap wrapper instances.
For generating functions there is no need to wrap the bytecode function in a generator wrapper instance. Instead the type of the bytecode function can be changed to mp_type_gen_wrap. This reduces code size and saves a block of GC heap RAM for each generator.
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@ -146,14 +146,13 @@ mp_obj_t mp_make_function_from_raw_code(const mp_raw_code_t *rc, mp_obj_t def_ar
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// rc->kind should always be set and BYTECODE is the only remaining case
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assert(rc->kind == MP_CODE_BYTECODE);
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fun = mp_obj_new_fun_bc(def_args, def_kw_args, rc->data.u_byte.bytecode, rc->data.u_byte.const_table);
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// check for generator functions and if so change the type of the object
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if ((rc->scope_flags & MP_SCOPE_FLAG_GENERATOR) != 0) {
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((mp_obj_base_t*)MP_OBJ_TO_PTR(fun))->type = &mp_type_gen_wrap;
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}
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break;
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}
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// check for generator functions and if so wrap in generator object
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if ((rc->scope_flags & MP_SCOPE_FLAG_GENERATOR) != 0) {
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fun = mp_obj_new_gen_wrap(fun);
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}
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return fun;
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}
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1
py/obj.h
1
py/obj.h
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@ -547,6 +547,7 @@ extern const mp_obj_type_t mp_type_slice;
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extern const mp_obj_type_t mp_type_zip;
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extern const mp_obj_type_t mp_type_array;
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extern const mp_obj_type_t mp_type_super;
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extern const mp_obj_type_t mp_type_gen_wrap;
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extern const mp_obj_type_t mp_type_gen_instance;
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extern const mp_obj_type_t mp_type_fun_builtin_0;
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extern const mp_obj_type_t mp_type_fun_builtin_1;
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@ -37,11 +37,6 @@
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/******************************************************************************/
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/* generator wrapper */
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typedef struct _mp_obj_gen_wrap_t {
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mp_obj_base_t base;
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mp_obj_t *fun;
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} mp_obj_gen_wrap_t;
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typedef struct _mp_obj_gen_instance_t {
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mp_obj_base_t base;
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mp_obj_dict_t *globals;
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@ -49,9 +44,8 @@ typedef struct _mp_obj_gen_instance_t {
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} mp_obj_gen_instance_t;
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STATIC mp_obj_t gen_wrap_call(mp_obj_t self_in, size_t n_args, size_t n_kw, const mp_obj_t *args) {
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mp_obj_gen_wrap_t *self = MP_OBJ_TO_PTR(self_in);
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mp_obj_fun_bc_t *self_fun = (mp_obj_fun_bc_t*)self->fun;
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assert(self_fun->base.type == &mp_type_fun_bc);
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// A generating function is just a bytecode function with type mp_type_gen_wrap
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mp_obj_fun_bc_t *self_fun = MP_OBJ_TO_PTR(self_in);
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// bytecode prelude: get state size and exception stack size
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size_t n_state = mp_decode_uint_value(self_fun->bytecode);
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@ -76,13 +70,6 @@ const mp_obj_type_t mp_type_gen_wrap = {
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.unary_op = mp_generic_unary_op,
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};
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mp_obj_t mp_obj_new_gen_wrap(mp_obj_t fun) {
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mp_obj_gen_wrap_t *o = m_new_obj(mp_obj_gen_wrap_t);
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o->base.type = &mp_type_gen_wrap;
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o->fun = MP_OBJ_TO_PTR(fun);
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return MP_OBJ_FROM_PTR(o);
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}
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/******************************************************************************/
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/* generator instance */
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