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When an async open port fails early, it would sometimes
leak memory.
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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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Instead of forking from the beam process, we create a separate
process in which all forks are done. This has several advantages:
1) performance:
* don't have to close all fd's in the world
* fork only has to copy stuff from a small process
* work is done in a completely seperate process
* a 3x performance increase has been measured,
can be made even greater (10x) if we cache the
environment in child setup
2) stability
* the exec is done in another process than beam, which means that
if the file that we exec to is on an nfs that is not available
right now we will not block a scheduler until the nfs returns.
3) simplicity
* don't have to deal with SIGCHLD in the erts
Unfortunately, this solution also implies some badness.
1) There will always be a seperate process running together with
beam on unix. This could be confusing and undesirable.
2) We have to transfer the entire environment to child_setup
for each command.
OTP-13088
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OTP-13087
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OTP-13086
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OTP-13082
* sverk/binary_split_bif:
erts: Minor refactor for binary find BIF backend
erts: Refactor BIF for binary:match,matches,split
erts: Refactor backend of binary:split
erts: Replace 0 with THE_NON_VALUE
stdlib: Add BIF option 'trim_all' to binary:split/3
stdlib: Add BIF binary:split/2 and binary:split/3
Conflicts:
bootstrap/lib/stdlib/ebin/binary.beam
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* Use NULL instead of THE_NON_VALUE for non-Eterm variable.
* Add BinaryFindState_bignum struct to avoid unnecessary type casting.
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with an common do_binary_find() used by match, matches and split.
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to reduce code volume.
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* lukas/erts/win32_bool_fix/OTP-13079:
erts: bool is a reserved word, use boolean instead
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* lrascao/fix/build_fail_on_enabled_dist_debug:
Fix build fail when enabling distribution debug messages
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A new {line_delimiter, byte()} option allows line-oriented TCP-based
protocols to use a custom line delimiting character. It is to be
used in conjunction with {packet, line}.
This option also works with erlang:decode_packet/3 when its first argument
is 'line'.
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A new {line_delimiter, byte()} option allows line-oriented TCP-based protocols
to use a custom line delimiting character. It is to be used in conjunction
with {packet, line}.
This option also works with erlang:decode_packet/3 when its first argument
is 'line'.
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* bjorn/erts/builtin/OTP-13034:
Teach erlang:is_builtin/3 that erlang:apply/3 is built-in
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Binary vheap mature is not necessary for binary gc.
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erlang:is_builtin(erlang, apply, 3) returns 'false'. That seems to be
an oversight in the implementation of erlang:is_builtin/3 rather than
a conscious design decision. Part of apply/3 is implemented in C (as a
special instruction), and part of it in Erlang (only used if apply/3
is used recursively). That makes apply/3 special compared to all other
BIFs.
From the viewpoint of the user, apply/3 is a built-in function,
since it cannot possibly be implemented in pure Erlang.
Noticed-by: Stavros Aronis
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Another process may already have been placed in this slot
since the free och the process struct can be scheduled for
later.
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* goertzenator/enif_make_pid-unused_param:
fix unused parameter warning in enif_make_pid
OTP-12989
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* mikpe/erts-binary_to_integer-fix:
erts: fix binary_to_integer boundary case
OTP-12988
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* maint:
Add configure switch --disable-saved-compile-time
Fix ethread events with timeout
Improve choice of clock sources at build time
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* rickard/disable-saved-compile-time/OTP-12971:
Add configure switch --disable-saved-compile-time
Conflicts:
HOWTO/INSTALL.md
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* rickard/event-tmo/OTP-12954:
Fix ethread events with timeout
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Conflicts:
erts/emulator/beam/erl_printf_term.c
erts/emulator/beam/erl_term.c
erts/emulator/beam/utils.c
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If the process stack contained a match state
the print function would crash the vm as it was not
recognized by tag_val_def().
Add new MATCHSTATE_DEF returned by tag_val_def().
All other callers either ignore it or has a default
clause to handle invalid terms.
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* sverk/hipe-maps-merge-wrapper:
erts: Fix hipe bug for maps:merge/2
erts: Beautify hipe wrapper macro
OTP-12965
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Add forgotten HIPE_WRAPPER_BIF_DISABLE_GC which
could lead to stack-heap overrun if unlucky with the
yielding during maps:merge when called by native hipe code.
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Lots of pthread platforms unnecessarily falled back on the pipe/select
solution. This since we tried to use the same monotonic clock source
for pthread_cond_timedwait() as used by OS monotonic time. This has
been fixed on most platforms by using another clock source.
Darwin can however not use pthread_cond_timedwait() with monotonic
clock source and has to use the pipe/select solution. On darwin we
now use select with _DARWIN_UNLIMITED_SELECT in order to be able to
handle a large amount of file descriptors.
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* maint:
erts: Make sure to unlock status lock when setting process prio
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* lukas/erts/process_priority_unlock/OTP-12943:
erts: Make sure to unlock status lock when setting process prio
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* maint:
erts: Don't abort when a system process is terminated
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* lukas/erts/system_process_core/OTP-12934:
erts: Don't abort when a system process is terminated
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