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* bjorn/kernel/rpc/OTP-13409:
Don't throw exceptions from rpc:call() and rpc:block_call()
Reduce code duplication in called_node_dies/1 and friends
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* bjorn/clearer-startup-crashes/OTP-13294:
Make distribution failures during start-up easier to read
net_kernel: Separate exports into documented and non-documented groups
erl_distribution: Simplify start_link/0 and friends
Reorder and comment API functions
Clean up splitting of node names
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When an attempt is made to start a distributed Erlang node with
the same name as an existing node, the crash reports for several
supervisors would be displayed. Only the first line contains
useful information. The verbiage is annoying for old hands and
could easily scare newcomers away for good.
For all the common distribution failures during start-up, write a
simple message and terminate the emulator using halt/1. Here is an
example of what will be printed:
Protocol 'inet_tcp': the name somename@somehost seems to be in use by another Erlang node
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The documentation for rpc:call() says:
Evaluates apply(Module, Function, Args) on the node Node and
returns the corresponding value Res, or {badrpc, Reason} if
the call fails.
What is not said that rpc:call() can generate an exception if the
'rex' process on the other node is killed:
(kalle@host)1> Rex = rpc:call(arne@host, erlang, whereis, [rex]).
<6937.14.0>
(kalle@host)2> rpc:call(arne@host, erlang, exit, [Rex,kill]).
** exception exit: {killed,
{gen_server,call,
[{rex,arne@host},
{call,erlang,exit,[<6937.14.0>,kill],<0.33.0>},
infinity]}}
in function rpc:rpc_check/1 (rpc.erl, line 361)
On the other hand, if the other node shuts down for some other reason,
we'll get a {badrpc,nodedown} result:
(kalle@host)5> rpc:call(arne@host, erlang, halt, []).
{badrpc,nodedown}
There does not seem to be any reason to handle the two cases
differently. If the 'rex' process is terminated on the other node,
it will shut down shortly thereafter.
Therefore, change rpc:call() and rpc:block_call() to always return
{badrpc,Reason} is the call fails:
(kalle@host)1> Rex = rpc:call(arne@host, erlang, whereis, [rex]).
<6937.14.0>
(kalle@host)2> rpc:call(arne@host, erlang, exit, [Rex,kill]).
{badrpc,{'EXIT',{killed,{gen_server,call,
[{rex,arne@host},
{call,erlang,exit,[<7126.14.0>,kill],<0.33.0>},
infinity]}}}}
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* rickard/doc-fix:
Fix doc build
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* rickard/ds-sched-suspend:
Improved scheduler suspend functionality
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start_link/0 and friends are too convoluted for me.
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Move all functions meant to be called from other modules before
the internal functions. Comment them to make it clearer what their
purpose are.
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* bjorn/kernel/modernize-tests:
Remove ?line macros
Fix comments
gen_tcp_misc_SUITE: Use unique node names
Eliminate use of the ?t macro
Eliminate use of doc and suite clauses
Replace use of test_server:capture*/0 with ct:capture*/0
Eliminate use test_server:format()
Eliminate use of test_server:sleep/1
Eliminate use of test_server:fail/0,1
Eliminate use of ?config() macro
Modernize timetraps
disk_log_SUITE: Remove vestiges of VxWorks support
Conflicts:
lib/kernel/test/code_SUITE.erl
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- The calling process is now suspended while synchronizing
scheduler suspends via erlang:system_flag(schedulers_online, _)
and erlang:system_flag(multi_scheduling, _), instead of blocking
the scheduler thread in the BIF call waiting for the operation
to synchronize. Besides releasing the scheduler for other work
(or immediate suspend) it also makes it possible to abort the
operation by killing the process.
- erlang:system_flag(schedulers_online, _) now only wait for normal
schedulers to complete before it returns. This since it may take
a very long time before all dirty schedulers suspends.
- erlang:system_flag(multi_scheduling, block_normal|unblock_normal)
which only operate on normal schedulers has been introduced. This
since there are use cases where suspend of dirty schedulers are
not of interest (hipe loader).
- erlang:system_flag(multi_scheduling, block) still blocks all
dirty schedulers as well as all normal schedulers except one since
it is hard to redefine what multi scheduling block means.
- The three operations:
- changing amount of schedulers online
- blocking/unblocking normal multi scheduling
- blocking/unblocking full multi scheduling
can now be done in parallel. This is important since otherwise
a full multi scheduling block would potentially delay the other
operations for a very long time.
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While we are it, also re-ident the files.
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Remove out-commented code. Make sure that comments that are not
at the end of a line starts with two '%' characters and not just
one. That will become important later when we'll remove all
?line macros and ask Emacs to re-indent the files.
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Use unique node names to ensure that one failed test case will
not cause other test cases to fail if a slave node was left.
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Those clause are obsolete and never used by common_test.
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Replace with io:format/2 or ct:pal/3.
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* bjorn/multiple-load/OTP-13111:
erl_prim_loader_SUITE: Add debug printout
Skip erl_prim_loader_SUITE:get_modules/1 when cover-compiled
multi_load_SUITE: Clarify failure reasons
multi_load_SUITE: Don't fail on non-HiPE systems
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?config is ugly and not recommended. Use proplists:get_value/2
instead.
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This bug was introduced by OTP-13388.
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* maint:
io_SUITE: Don't fail on fast computers with rough timers
Fix code_SUITE after test_server change
Set default value for crash_dump_dir
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* siri/crashdump-dir/OTP-13388:
Fix code_SUITE after test_server change
Set default value for crash_dump_dir
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* henrik/doc-fixes:
Fix typo in INSTALL.md
Update README.md
Fix typo in 'app' documentation
s/is/are
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code:which/1 will return 'cover_compiled' instead of a path. We
could work around that, but since erl_prim_loader is not
cover-compiled, it does not gain us anything.
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The failure reasons remained from a previous draft of the API.
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test_server:start_node does no longer add the test_server path to the
new node, since the needed code is present in the default path. This
caused two test cases in code_SUITE to fail.
code_SUITE:mult_lib_roots: Expected the test_server path to be first
in the code path. This check is removed.
code_SUITE:bad_erl_libs: Started a node with "-env ERL_LIBS ",
i.e. not giving any value to the ERL_LIBS variable. This test
succeeded by accident, since the combination with arguments set by
test_server_node.erl and by slave.erl caused the node start to work,
and no further checks were present in the test. This part of the test
case is now removed.
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* siri/appups-19.0:
Update appups in kernel, stdlib and sasl for OTP-19
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* sverk/master/halt-INT_MIN:
erts: Make erlang:halt() accept bignums as Status
erts: Change erl_exit into erts_exit
kernel: Remove calls to erl_exit
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OTP-13251
* sverk/halt-INT_MIN:
erts: Make erlang:halt() accept bignums as Status
erts: Change erl_exit into erts_exit
kernel: Remove calls to erl_exit
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* msantos/epmd-IPv6-node-reg2/PR-864/OTP-13364:
epmd: support IPv6 node registration
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* siri/appups-18.3:
Update appups in kernel, stdlib and sasl for OTP-18.3
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* bjorn/multiple-load/OTP-13111:
code: Add functions that can load multiple modules
Refactor post_beam_load handling
Simplify and robustify code_server:all_loaded/1
Update preloaded modules
Add erl_prim_loader:get_modules/3
Add has_prepared_code_on_load/1 BIF
Allow erlang:finish_loading/1 to load more than one module
beam_load.c: Add a function to check for an on_load function
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Conflicts:
erts/emulator/beam/erl_alloc.types
erts/emulator/beam/erl_bif_info.c
erts/emulator/beam/erl_process.c
erts/preloaded/ebin/erts_internal.beam
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Change scheduler responsiveness to 'check_schedulers'.
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