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'gomoripeti/kernel/controlling_proc_badarg_doc/PR-1208/OTP-14022' into maint
* gomoripeti/kernel/controlling_proc_badarg_doc/PR-1208/OTP-14022:
controlling_process can return {error, badarg}
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* sverker/kernel-erts-dependency:
kernel: Add lost dependency to erts-8.1
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In OTP-19.1 (c70ca686fe269db6079a2ca1c7e09cdfc0cfa903)
erts_code_purger:finish_after_on_load/2 was added
and called by code_server.erl.
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For gen_tcp, gen_udp and gen_sctp controlling_process/2 can return
badarg if erlang:port_connect/2 fails with badarg. This can easily
happen if the new owner is not alive but in some race condition also
when the socket is closed right before port_connect/2 (and after the
previous socket function)
This commit documents this behaviour.
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* raimo/diffserv-socket-option/OTP-13582:
Tune 'tclass' semantics
Implement IPV6_TCLASS
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* bjorn/erts/on_load/ERL-240/OTP-13893:
erts: Add nif_SUITE:t_on_load
erts: Improve nif_SUITE:upgrade test
Don't leak old code when loading a modules with an on_load function
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Normally, calling code:delete/1 before re-loading the code for a
module is unnecessary but causes no problem.
But there will be be problems if the new code has an on_load function.
Code with an on_load function will always be loaded as old code
to allowed it to be easily purged if the on_load function would fail.
If the on_load function succeeds, the old and current code will be
swapped.
So in the scenario where code:delete/1 has been called explicitly,
there is old code but no current code. Loading code with an
on_load function will cause the reference to the old code to be
overwritten. That will at best cause a memory leak, and at worst
an emulator crash (especially if NIFs are involved).
To avoid that situation, we will put the code with the on_load
function in a special, third slot in Module.
ERL-240
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* lukas/kernel/os_cmd_fix_stdin_close/OTP-13867:
kernel: Close stdin of commands run in os:cmd
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This is needed when running programs that only exit when
stdin has been closed, e.g. 'more'.
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* maint-19:
Updated OTP version
Prepare release
erts: Make sure to flush potential exit message
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* lukas/erts/fix_init_stop_code_load_race/OTP-13802:
erts/kernel: Fix code loading deadlock during init:stop
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When init:stop is called it walks the application hierarchy
and terminates each process. Some of these processes may do
something while terminating and sometimes that something
needs to load some new code in order to work. When this happens
the code_server could just be in the process of terminating
or the erl_prim_loader could be active. In both these cases
the request to load the new code would cause a deadlock in the
termination of the system.
This commit fixes this by init rejecting attempts to load new code
when init:stop has been called and fixing a termination race in
the code_server.
This however means that the process that tried to do something
when told to terminate (for instance logging that it is terminating)
will crash instead of loading the code.
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by separating the constant values into tuple ConData.
and that exposed the fact that TcpAddress and MyNode
where not used.
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Conflicts:
lib/ssl/src/ssl.appup.src
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This is needed as doing only an 'exit' will only exit the
program, but any children started in the program that have
stdout/stderr still open will keep the port open until they
terminate. i.e.
os:cmd("while true; do echo sleep 1; sleep 1; done&").
would block os:cmd forever because the while loop keeps its copies
of stdout/stderr open forever.
It could be argued that this is correct behaviour, and it is
the way it works on windows, but changing this breaks backwards
compatability for os:cmd which is not acceptable.
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* okumin/kernel/remove-duplicated-line/PR-1119/OTP-13771:
Remove a duplicated pattern matching in erl_epmd.erl
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maint
* lemenkov/kernel/fix-register_ipv6_epmd/PR-1129/OTP-13770:
Respect -proto_dist switch while connection to EPMD
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Signed-off-by: Peter Lemenkov <[email protected]>
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`select_best_version` has the duplicated case.
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* raimo/uds-support/OTP-13643:
Update test cases after daily builds
Return eafnosupport when not supported
Add AF_LOCAL test cases
Handle 'undefined' in fdopen
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For use in ssl:getstat/{1,2}.
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* saleyn/uds/PR-612/OTP-13572:
Rewrite inet* for address family 'local'
Rewrite inet_drv for AF_LOCAL
Assign externally open fd to gen_tcp (UDS support)
Conflicts:
erts/preloaded/ebin/prim_inet.beam
lib/kernel/doc/src/gen_tcp.xml
lib/kernel/doc/src/gen_udp.xml
lib/kernel/src/inet6_sctp.erl
lib/kernel/test/inet_SUITE.erl
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* legoscia/erts/epmd-module-option/OTP-13627:
Add tests for -start_epmd and -epmd_module options
Use the -epmd_module flag consistently
Add -start_epmd command line option
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If the -epmd_module flag has been specified on the command line, use
that module to register and look up node names instead of the default,
erl_epmd.
Also document this option.
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This makes the implementation text of inet:gethostbyname/1 identical to
that of inet_res:gethostbyname/1. I also copied over the doc note about
this resolver option.
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* bjorn/fix-on_load/OTP-12593:
Update documentation regarding improvements
Correctly handle multiple load attempts when on_load is pending
Avoid deadlock when an on_load function makes an external call to the module itself
code_server: Eliminate unnecessary Tag in handle_call/3
Reimplement -on_load()
Refactor erts_finish_loading() and insert_new_code()
code_SUITE: Make on_load_binary/1 clearer by using merl
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If an on_load function had not yet returned, the code server
would only correctly handle calls to code:ensure_loaded/1. That
is, each process that called code:ensured_loaded/1 for the
module in question would be suspended until the on_load function
had returned.
The code server handled calls to code:load_binary/1, code:load_file/1,
and code:load_abs/1 in the same way as for code:ensure_loaded/1.
That means that if call to one those functions attempted to load
*different* code for the module, that code would not get loaded.
Note that code:finish_loading/1 (code:atomic_load/1) will still return
{error,pending_on_load} if there is a pending on_load function for one
of the modules that are about to be loaded. The reason is that
code:finish_loading/1 is meant to either succeed directly, or fail
quickly if there is any problem.
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itself
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For historical reasons, the second argument in handle_call/3 is
{Pid,Tag}. The tag is always 'call' and is never used.
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Load the module as old code; swap old and new code if the
-on_load function succeeds. That way, a failed update attempt
for a module that has an -on_load function will preserve the
previous version of the code.
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* legoscia/dist-shutdown-reasons/PR-1028/OTP-13458:
Error reasons for more distribution errors
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* zandra/optimize-rpc/OTP-13518:
use maps instead of gb_trees to optimize the rpc server
let the spawned processes handle rpc replies
Conflicts:
lib/runtime_tools/test/dbg_SUITE.erl
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