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Also updated the mapped time to support the new 64-bit time while
keeping compatible with the user land programs currently using it so
they can be migrated in parallel.
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time_value64_t uses int64_t to track seconds and nanoseconds and hence
is Y2038 proof. It does not have nano second resolution but it could
be provided in the future.
Removed include/sys/time.h as it remaps time_value_t into timeval which
can create confusion.
The timestamp from keyboard and mouse events is no longer set and
replaced with rpc_time_value for better compatibility.
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The inline keyword was not defined there, so we need to use __inline__.
This fixes make check in glibc.
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On 64 bit kernels, seconds will be 64 bits long and won't suffer from
the 2038 problem. We also add a new type rpc_time_value_t to handle the
conversion between 32 bit userland and 64 bit kernel.
Message-Id: <Y50kIaIgaIdGjDAk@mars>
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* include/mach/time_value.h (TIME_VALUE_TO_TIMESPEC,
TIMESPEC_TO_TIME_VALUE): New macros
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* include/mach/time_value.h (struct mapped_time_value): Adjust comment.
* kern/mach_clock.c (mtime): Likewise. Also make it volatile.
(update_mapped_time): Use full hardware barriers.
(read_mapped_time): New macro with proper fences.
(record_time_stamp, host_get_time): Use the new macro.
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* include/mach/time_value.h (time_value_assert): New macro to assert
that the given value is well-formed.
(time_value_add_usec): Use the new macro.
(time_value_sub_usec): New macro.
(time_value_add): Use `time_value_add_usec'.
(time_value_sub_usec): New macro.
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