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If the port terminates before Port ! close is issued,
there will be no 'closed' reply, so the old code would
hang. As it turns out there is no way to figure out
if a closed reply is supposed to come as that reply
is sent after all links and monitors are triggered.
So we have to use the synchronous port_close to close
the port.
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Store messages for 'rex' and 'error_logger' off heap
OTP-14192
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file: match enoent and enotdir in path_open
OTP-14191
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Performance for processes that receive huge amounts of
messages can be increased by storing the incoming messages
outside the heap (that avoids copying the message in a
garbage collection).
Two OTP processes that are known to receive many messages
are 'rex' (used by 'rpc') and 'error_logger'.
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* legoscia/remove-watchdog-vestiges/PR-1255/OTP-14112:
Remove vestiges of watchdog support in heart
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Hardware watchdog support was removed from heart in R13A, but there were
still some vestiges in the code and the documentation.
- Remove mentions of the HW_WD_DISABLE variable, as it's no longer used.
- Remove the HEART_BEAT_BOOT_DELAY variable, as it was only used for the
hardware watchdog.
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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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