diff options
author | Jim Mussared <jim.mussared@gmail.com> | 2022-04-22 15:32:22 +1000 |
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committer | Damien George <damien@micropython.org> | 2022-05-03 22:23:46 +1000 |
commit | 709e8328d9812a2e02da6fba65a03f9a873d60a2 (patch) | |
tree | 72d53933f3e251be477f709ad3d94a2609b85fcd /py/obj.h | |
parent | 590de399f01cd08aa4825b26b91785e07abcf68c (diff) |
py/obj: Introduce mp_obj_malloc macro to allocate, and set object type.
This is to replace the following:
mp_foo_obj_t *self = m_new_obj(mp_foo_obj_t);
self->base.type = &mp_type_foo;
with:
mp_foo_obj_t *self = mp_obj_malloc(mp_foo_obj_t, &mp_type_foo);
Calling the function is less code than inlining setting the type
everywhere, adds up to ~100 bytes on PYBV11.
It also helps to avoid an easy mistake of forgetting to set the type.
Signed-off-by: Jim Mussared <jim.mussared@gmail.com>
Diffstat (limited to 'py/obj.h')
-rw-r--r-- | py/obj.h | 6 |
1 files changed, 6 insertions, 0 deletions
@@ -732,6 +732,12 @@ extern const struct _mp_obj_exception_t mp_const_GeneratorExit_obj; // General API for objects +// Helper versions of m_new_obj when you need to immediately set base.type. +// Implementing this as a call rather than inline saves 8 bytes per usage. +#define mp_obj_malloc(struct_type, obj_type) ((struct_type *)mp_obj_malloc_helper(sizeof(struct_type), obj_type)) +#define mp_obj_malloc_var(struct_type, var_type, var_num, obj_type) ((struct_type *)mp_obj_malloc_helper(sizeof(struct_type) + sizeof(var_type) * (var_num), obj_type)) +void *mp_obj_malloc_helper(size_t num_bytes, const mp_obj_type_t *type); + // These macros are derived from more primitive ones and are used to // check for more specific object types. // Note: these are kept as macros because inline functions sometimes use much |