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| author | Damien George <damien.p.george@gmail.com> | 2015-07-20 11:03:13 +0000 |
|---|---|---|
| committer | Damien George <damien.p.george@gmail.com> | 2015-07-20 11:03:13 +0000 |
| commit | c3bd9415cc8e6ba3619fe4b7a2bdac20260b0236 (patch) | |
| tree | f18830095cdda64cfdfc6e164ec88d3442e85c6c /py/mpconfig.h | |
| parent | 1e8ca3a3cf442733f9210be4d5f6a5b63135a16d (diff) | |
py: Make qstr hash size configurable, defaults to 2 bytes.
This patch makes configurable, via MICROPY_QSTR_BYTES_IN_HASH, the
number of bytes used for a qstr hash. It was originally fixed at 2
bytes, and now defaults to 2 bytes. Setting it to 1 byte will save
ROM and RAM at a small expense of hash collisions.
Diffstat (limited to 'py/mpconfig.h')
| -rw-r--r-- | py/mpconfig.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/py/mpconfig.h b/py/mpconfig.h index 0b86ec435..9f0e909f5 100644 --- a/py/mpconfig.h +++ b/py/mpconfig.h @@ -152,6 +152,11 @@ #define MICROPY_QSTR_BYTES_IN_LEN (1) #endif +// Number of bytes used to store qstr hash +#ifndef MICROPY_QSTR_BYTES_IN_HASH +#define MICROPY_QSTR_BYTES_IN_HASH (2) +#endif + // Avoid using C stack when making Python function calls. C stack still // may be used if there's no free heap. #ifndef MICROPY_STACKLESS |