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The OSE port is no longer supported and this commit removed it
and any changes related to it. The things that were general
improvements have been left in the code.
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* rickard/timer-optimization/OTP-12650:
Optimized timer implementation
Reusable red-black tree implementation
Conflicts:
erts/emulator/beam/erl_bif_timer.c
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* sverk/pr632/prevent-illegal-nif-terms/OTP-12655:
erts: Reject non-finite float terms in erl_drv_output_term
erts: Remove old docs about experimental NIF versions.
erts: Add enif_has_pending_exception
erts: Clearify erl_nif documentation about badarg exception
erts: Fix compile warning in enif_make_double
erts: Fix divide by zero compile error in nif_SUITE.c
erts: Fix isfinite for windows
Ensure NIF term creation disallows illegal values
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Add macro erts_isfinite as an OS independent way to check
if a float is finite.
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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.
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Sometimes the wrong signal, i.e. a read reply, would be
received from this non-selective receive.
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The inet driver for OSE has to handle signals instead of selects
and thus the wrappers for ready_input/output are a little bit
different. However the majority of the inet code remains the same.
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Needed to get std io to work in some OSE systems where stdio
is not opened when the program starts.
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As any scheduler process can consume any message we have
to make sure that the message is owned by the scheduler
before returning it in erl_drv_ose_get_signal.
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The pattern used for getting the priority from the lmconf
is based on the name of the process created. The pattern is:
ERTS_%%PROCESS_NAME%%_PRIO
with the %%PROCESS_NAME%% replaced by the prefix of the process
the priority applies to. eg:
ERTS_SCHEDULER_PRIO=24
applies to processes with name SCHEDULER_1, SCHEDULER_2 etc.
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Now schedulers 2..N make sure to wake sched 1 if they
find that all io has been consumed and sched 1 is
sleeping. Before sched 1 was spinning in sys_schedule
waiting for sched 2..N to finish consuming io jobs
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Also removed softkernel lcf files.
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When opening filers on not mounted volumes the default
timeout on OSE is quite big and since at startup we load
something like 20 beam files this slows down startup by
as much as 50 seconds.
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Also deleted all the copy-paste stuff
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This is needed on OSs that do not do round robin scheduling
of threads.
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This new API has less impact on the check_io code and
also removes the callback from ErlDrvEntry. The downside
is that you have to give the resolve function when creating
each event.
Also the mode if the resolve was removed as this mimics the
win32 code and decreases complexity.
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For some reason starting with pm_create offsets the
input argument list by one, so we have to adjust them
before calling erl_start.
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Some OSE cross-chains have problems with system includes
being used, so for atleast OSE specific parts we use ""
instead of <>.
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The interface of this module is made to be as generic as possible
in order for other IPC mechanisms to mimic it and allow porting of
code between different os:es.
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The old way registered a shell command that needed to be executed. This
way is more flexible as you can also use the lmconf file to set arguments
there.
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This is needed because a file has to be opened and operated on
in the same process at all times. Using async threads guarantee this.
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To enable just uncomment and all signals going in or out will be
printed to stdout.
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Before get_envp was used and this caused the environment
variables to not be accessible in the correct way by
use debug tools.
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This port has support for both non-smp and smp.
It contains a new way to do io checking in which erts_poll_wait
receives the payload of the polled entity. This has implications
for all linked-in drivers.
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