diff options
Diffstat (limited to 'py/mpconfig.h')
| -rw-r--r-- | py/mpconfig.h | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/py/mpconfig.h b/py/mpconfig.h index cf0538cae4..4c12762759 100644 --- a/py/mpconfig.h +++ b/py/mpconfig.h @@ -893,6 +893,64 @@ typedef double mp_float_t; #define MICROPY_FULL_CHECKS (MICROPY_CONFIG_ROM_LEVEL_AT_LEAST_CORE_FEATURES) #endif +// Ports can choose to use timestamps based on 2000-01-01 or 1970-01-01 +// Default is timestamps based on 2000-01-01 +#if !defined(MICROPY_EPOCH_IS_2000) && !defined(MICROPY_EPOCH_IS_1970) +#define MICROPY_EPOCH_IS_2000 (1) +#define MICROPY_EPOCH_IS_1970 (0) +#elif !defined(MICROPY_EPOCH_IS_1970) +#define MICROPY_EPOCH_IS_1970 (1 - (MICROPY_EPOCH_IS_2000)) +#elif !defined(MICROPY_EPOCH_IS_2000) +#define MICROPY_EPOCH_IS_2000 (1 - (MICROPY_EPOCH_IS_1970)) +#endif + +// To maintain reasonable compatibility with CPython on embedded systems, +// and avoid breaking anytime soon, time functions are defined to work +// at least between 1970 and 2099 (included) on any machine. +// +// Specific ports can enable extended date support +// - after 2099 using MICROPY_TIME_SUPPORT_Y2100_AND_BEYOND +// - before 1970 using MICROPY_TIME_SUPPORT_Y1969_AND_BEFORE +// The largest possible range is year 1600 to year 3000 +// +// By default, extended date support is only enabled for machines using 64 bit pointers, +// but it can be enabled by specific ports +#ifndef MICROPY_TIME_SUPPORT_Y1969_AND_BEFORE +#if MP_SSIZE_MAX > 2147483647 +#define MICROPY_TIME_SUPPORT_Y1969_AND_BEFORE (1) +#else +#define MICROPY_TIME_SUPPORT_Y1969_AND_BEFORE (0) +#endif +#endif + +// When support for dates <1970 is enabled, supporting >=2100 does not cost anything +#ifndef MICROPY_TIME_SUPPORT_Y2100_AND_BEYOND +#define MICROPY_TIME_SUPPORT_Y2100_AND_BEYOND (MICROPY_TIME_SUPPORT_Y1969_AND_BEFORE) +#endif + +// The type to be used to represent platform-specific timestamps depends on the choices above +#define MICROPY_TIMESTAMP_IMPL_LONG_LONG (0) +#define MICROPY_TIMESTAMP_IMPL_UINT (1) +#define MICROPY_TIMESTAMP_IMPL_TIME_T (2) + +#ifndef MICROPY_TIMESTAMP_IMPL +#if MICROPY_TIME_SUPPORT_Y2100_AND_BEYOND || MICROPY_TIME_SUPPORT_Y1969_AND_BEFORE || MICROPY_EPOCH_IS_2000 +#define MICROPY_TIMESTAMP_IMPL (MICROPY_TIMESTAMP_IMPL_LONG_LONG) +#else +#define MICROPY_TIMESTAMP_IMPL (MICROPY_TIMESTAMP_IMPL_UINT) +#endif +#endif + +// `mp_timestamp_t` is the type that should be used by the port +// to represent timestamps, and is referenced to the platform epoch +#if MICROPY_TIMESTAMP_IMPL == MICROPY_TIMESTAMP_IMPL_LONG_LONG +typedef long long mp_timestamp_t; +#elif MICROPY_TIMESTAMP_IMPL == MICROPY_TIMESTAMP_IMPL_UINT +typedef mp_uint_t mp_timestamp_t; +#elif MICROPY_TIMESTAMP_IMPL == MICROPY_TIMESTAMP_IMPL_TIME_T +typedef time_t mp_timestamp_t; +#endif + // Whether POSIX-semantics non-blocking streams are supported #ifndef MICROPY_STREAMS_NON_BLOCK #define MICROPY_STREAMS_NON_BLOCK (MICROPY_CONFIG_ROM_LEVEL_AT_LEAST_EXTRA_FEATURES) |