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| author | Ayke van Laethem <aykevanlaethem@gmail.com> | 2018-02-23 18:59:31 +0100 |
|---|---|---|
| committer | Damien George <damien.p.george@gmail.com> | 2018-12-04 17:17:25 +1100 |
| commit | 31cf528c754c5cf42410ff7c5471f0235493c0f2 (patch) | |
| tree | 2b699575b692379820a7630e6a6b7ad2faefe65f /py/mpstate.h | |
| parent | 62b4bebf6437df1a1a82747421c1ab94f46c15c2 (diff) | |
py: Add option to reduce GC stack integer size to save RAM.
A new option MICROPY_GC_STACK_ENTRY_TYPE is added to select a custom type
instead of size_t for the gc_stack array items. This can be beneficial for
small devices, especially those that are low on memory anyway. If a device
has 1MB or less of heap (and 16-byte GC blocks) then this type can be
uint16_t, saving 128 bytes of RAM.
Diffstat (limited to 'py/mpstate.h')
| -rw-r--r-- | py/mpstate.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/py/mpstate.h b/py/mpstate.h index 8c3b710cb..98371ca64 100644 --- a/py/mpstate.h +++ b/py/mpstate.h @@ -77,7 +77,7 @@ typedef struct _mp_state_mem_t { byte *gc_pool_end; int gc_stack_overflow; - size_t gc_stack[MICROPY_ALLOC_GC_STACK_SIZE]; + MICROPY_GC_STACK_ENTRY_TYPE gc_stack[MICROPY_ALLOC_GC_STACK_SIZE]; uint16_t gc_lock_depth; // This variable controls auto garbage collection. If set to 0 then the |