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author | Rickard Green <[email protected]> | 2014-10-30 23:57:01 +0100 |
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committer | Rickard Green <[email protected]> | 2015-03-20 15:23:10 +0100 |
commit | 6487aac5977cf470bc6a2cd0964da2850ee38717 (patch) | |
tree | 84fa1670c6d09a57655c1b7be75fb5e34c5981ec /erts/emulator/beam/erl_alloc.types | |
parent | cd917e88f5718eead826c896864cfe85cd3d301b (diff) | |
download | otp-6487aac5977cf470bc6a2cd0964da2850ee38717.tar.gz otp-6487aac5977cf470bc6a2cd0964da2850ee38717.tar.bz2 otp-6487aac5977cf470bc6a2cd0964da2850ee38717.zip |
Introduce a new time API
The old time API is based on erlang:now/0. The major issue with
erlang:now/0 is that it was intended to be used for so many
unrelated things. This tied these unrelated operations together
and unnecessarily caused performance, scalability as well as
accuracy, and precision issues for operations that do not need
to have such issues. The new API spreads different functionality
over multiple functions in order to improve on this.
The new API consists of a number of new BIFs:
- erlang:convert_time_unit/3
- erlang:monotonic_time/0
- erlang:monotonic_time/1
- erlang:system_time/0
- erlang:system_time/1
- erlang:time_offset/0
- erlang:time_offset/1
- erlang:timestamp/0
- erlang:unique_integer/0
- erlang:unique_integer/1
- os:system_time/0
- os:system_time/1
and a number of extensions of existing BIFs:
- erlang:monitor(time_offset, clock_service)
- erlang:system_flag(time_offset, finalize)
- erlang:system_info(os_monotonic_time_source)
- erlang:system_info(time_offset)
- erlang:system_info(time_warp_mode)
- erlang:system_info(time_correction)
- erlang:system_info(start_time)
See the "Time and Time Correction in Erlang" chapter of the
ERTS User's Guide for more information.
Diffstat (limited to 'erts/emulator/beam/erl_alloc.types')
-rw-r--r-- | erts/emulator/beam/erl_alloc.types | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/erts/emulator/beam/erl_alloc.types b/erts/emulator/beam/erl_alloc.types index 21434eb117..4cd4ad100c 100644 --- a/erts/emulator/beam/erl_alloc.types +++ b/erts/emulator/beam/erl_alloc.types @@ -269,6 +269,7 @@ type BUSY_CALLER_TAB SHORT_LIVED SYSTEM busy_caller_table type BUSY_CALLER SHORT_LIVED SYSTEM busy_caller type PROC_SYS_TSK SHORT_LIVED PROCESSES proc_sys_task type PROC_SYS_TSK_QS SHORT_LIVED PROCESSES proc_sys_task_queues +type NEW_TIME_OFFSET SHORT_LIVED SYSTEM new_time_offset +if threads_no_smp # Need thread safe allocs, but std_alloc and fix_alloc are not; |