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In 80757f9, test_server was updated use the new 'rand' module instead
of 'random', but the the shuffle test cases were not updated.
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* bjorn/erts/clean-up-preloaded/OTP-13112:
Update preloaded modules
erl_prim_loader doc: Remove mention of user supplied loader
erl_prim_loader: Clean up string_match()
erl_prim_loader: Avoid making absolute paths
erl_prim_loader: Clean up splitting of filenames
init: Eliminate the concat/1 function
Clean up start of erl_prim_loader
Remove erl_prim_loader:get_files/2
erl_prim_loader: Remove code for handling OSE
erl_prim_loader: Break loop/3 into two functions for readability
prim_file: Suppress a dialyzer warning
Reduce the ludicrous number of arguments for eval_script()
Clean up handling of boot_vars
init_SUITE: Correct the test for a "real system"
Remove useless 'catch' in start_it/1
Simplify get_flag() and get_flag_list()
Clean up parsing and lookup of flags
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* bjorn/kernel/remove-code-path-cache/OTP-13191:
Remove the code path cache in the code server
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Custom loaders are no longer supported. Most of the documentation
for them were removed in c8a7d2d7.
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Part of the return value for string_match/3 is not used by
its only caller. Eliminate the unused part of the return value
and the accumulator argument for string_match().
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We don't need absolute paths unless we are dealing with archives.
Since it is not free to turn a relative path absolute (we will need a
call to prim_file to fetch the current directory), it's better to
delay the call to absname/1 until we are sure it's needed.
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There is no need to use the concat/1 function since all arguments
that are passed to it have known types.
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The 'init' module fetches command line parameters and passes them
to erl_prim_loader:start/3.
The code can be simplified if 'init' calls a new
erl_prim_loader:start/0 function that itself fetches the necessary
command line parameters. Also remove the documentation for the start()
function, since it there is no way that it can be usefully called by
a user application.
While we are at it, also get rid of '-id' command line parameter,
which is fetched and stored but never actually used.
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erl_prim_loader:get_files/2 was an optimization introduced before the
SMP emulator (that is, before R11). The idea was to use the async
threads in the efile driver to read multiple BEAM files from the disk
in parallel.
In a modern computer with the SMP emulator, loading a BEAM module
seems to be more time-consuming than reading it from disk. To optimize
loading we would need to load several modules in parallel. We could
modify get_files/2 so that it would support parallel loading, but it
is cleaner to first remove get_files/2 and then (in a future commit),
introduce new functions to support parallel loading.
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The deep indentation makes loop/3 difficult to read and maintain.
Break out the request handling code into a separate function.
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Kostis Sagonas pointed out that there is a dialyzer warning
for constructing an improper list in the following clause:
translate_response(?FILE_RESP_N2DATA = X,
[<<_:64, _:64, _:64>> | <<>>] = Data) ->
{error, {bad_response_from_port, [X | Data]}};
I don't want to change the code to somehow eliminate the warning. An
improper list has already been constructed in the efile driver itself,
and that would be difficult to fix.
Therefore, tell dialyzer to ignore warnings for improper lists
in translate_response/2.
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The compact wall of arguments makes it hard to see what is actually
happening in eval_script().
Collect the arguments into a record.
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Expansion of $ROOT in paths are handled specially compared to boot
variables. There is no reason $ROOT can't be handled as a boot
variable.
We can simplify the expansion of boot variables if we spend a little
extra effort upfront collecting all boot variables into a map.
Make the error checking for -boot_var arguments stricter. Only allow
-boot_var followed by exactly two arguments to help users catch
errors earlier.
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The last clause in start_it/1 calls a function in some module.
It goes to great length to catch any exception and pass them on
unchanged, and if there was a normal return, it will just return
the return value. It can been seen that the entire 'catch'
construction with the reference trick is totally unnecessary.
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The get_flag/3 function which returns a default value if the
flag doesn't exist, is implemented in terms of get_flag/2
which throws an exception if the flag doesn't exist.
get_flag/3 is frequently used for the flags that don't exist,
which means that means that an exception will be generated and
catched for no good reason.
Reimplement get_flag/3 so that it doesn't have to call get_flag/2
and catch an exception. Eliminate the get_flag/2 function by
writing a special purpose function for the only time it's used,
that is for retrieving the value for the -root flag. As a
side-effect, we will get a nicer error message if there is
something wrong with the -root flag.
Similarly, simplify get_flag_list/3 and remove get_flag_list/2.
We can also eliminate search/3 and use the lists:keyfind/3
BIF instead.
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The handling of flags has been incrementally messed up over
time, leading to convoluted code. Rewrite the parsing and
lookup of flags. By using the appropriate data structures,
the code will become simpler.
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=== OTP-18.2 ===
Changed Applications:
- asn1-4.0.1
- common_test-1.11.1
- compiler-6.0.2
- crypto-3.6.2
- dialyzer-2.8.2
- diameter-1.11.1
- erl_docgen-0.4.1
- erl_interface-3.8.1
- erts-7.2
- eunit-2.2.12
- hipe-3.14
- inets-6.1
- jinterface-1.6.1
- kernel-4.1.1
- observer-2.1.1
- parsetools-2.1.1
- public_key-1.1
- runtime_tools-1.9.2
- sasl-2.6.1
- snmp-5.2.1
- ssh-4.2
- ssl-7.2
- stdlib-2.7
- test_server-3.9.1
- tools-2.8.2
- typer-0.9.10
- wx-1.6
- xmerl-1.3.9
Unchanged Applications:
- cosEvent-2.2
- cosEventDomain-1.2
- cosFileTransfer-1.2
- cosNotification-1.2
- cosProperty-1.2
- cosTime-1.2
- cosTransactions-1.3
- debugger-4.1.1
- edoc-0.7.17
- eldap-1.2
- et-1.5.1
- gs-1.6
- ic-4.4
- megaco-3.18
- mnesia-4.13.2
- odbc-2.11.1
- orber-3.8
- os_mon-2.4
- ose-1.1
- otp_mibs-1.1
- percept-0.8.11
- reltool-0.7
- syntax_tools-1.7
- webtool-0.9
Conflicts:
OTP_VERSION
erts/vsn.mk
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* ia/libressl:
ssl: Print openssl version string
ssl: Do not use environment variables in openSSL config file
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* rickard/ohmq-fixup/OTP-13047:
Fix check_process_code()
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* lukas/erts/forker: (28 commits)
erts: Never abort in the forked child
erts: Mend ASSERT makro for erl_child_setup
erts: Allow enomem failures in port_SUITE
erts: iter_port sleep longer on freebsd
erts: Allow one dangling fd if there is a gethost port
erts: Only use forker StackAck on freebsd
erts: It is not possible to exit the forker driver
erts: Add forker StartAck for port start flowcontrol
erts: Fix large open_port arg segfault for win32
erts: Fix memory leak at async open port
kernel: Remove cmd server for unix os:cmd
erts: Add testcase for huge port environment
erts: Move os_pid to port hash to child setup
erts: Handle all EINTR and EAGAIN cases in child setup
erts: Make child_setup work with large environments
erts: Fix forker driver ifdefs for win32
erts: Fix uds socket handling for os x
erts: Fix dereferencing of unaligned integer for sparc
erts: Flatten too long io vectors in uds write
erts: Add fd count test for spawn_driver
...
Conflicts:
erts/emulator/beam/erl_node_tables.c
erts/preloaded/src/erts_internal.erl
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We always want the error to propagate up to the application
when a child cannot be created.
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when called by hash.c for example.
We use ASSERT from sys.h but erl_child_setup implements
its own erl_assert_error() as it doesn't link with sys.o.
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With the new forker implementation also enomem can be returned
as an indicator that it is not possible to create more ports.
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An acknowledgement of the Start command has to be managed
as we have to make sure that packages are not dropped and
also that the close calls do not happen too early.
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os_SUITE:large_output_command send a 10k large
argument to open_port({spawn,""}) which was too
small for the 2K buffer allocated for win32.
The buffer is now dynamic and any size can be used.
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When an async open port fails early, it would sometimes
leak memory.
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Since we no longer to vfork in the emulator there is
no need to serialize the os:cmd calls through a central
command server. This greatly decreases the complexity of
this code and should make it fast+more scalable.
OTP-13089
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Had to move the hashing because of a race that can otherwise happen
where a new os_pid value was inserted into the hash before the
previous value had been removed.
Also replaced the protocol inbetween erts and child setup to be
a binary protocol. This was done in order to deal with the varying
size of Eterm.
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OS X is very strict in what it requires of you and also
gives strange error codes for some errors. In this commit
we remap EMSGSIZE to EMFILE and also precisely tune the
amount of data we send on the socket so that we can recv
only that data. If we try to recv more, recvmsg fails with
EPIPE if the remote end has been closed.
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