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* lukas/erl_docgen/add_github_contrib_link/OTP-14979:
erl_docgen: Remove git dependency in github link script
stdlib: Fix timer monotonic time link
erl_docgen: Use name based anchors where possible
erl_docgen: Change ghlink icon to pencil
erl_docgen: Fix ghlinks to .xmlsrc
erl_docgen: Add hover links for ghlink
erl_docgen: Add ghlink step for all non-generated doc xml files
Fix erlang:abs/2 type docs
Tickets missed in 9033a41375f3a31a18eb0cba3ea
OTP-14651: temp_alloc disabling
OTP-14652: msacc bugs
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* rickard/signals/OTP-14589:
Fix seq trace
Fix bad assert
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All functions, datatype and h3 headings have gotten a hover
attribute that shows a link directly to the edit page on
github for easy editing of documentation.
The github link links to the maint branch. An early attempt
was done to use the SHA of the current branch, but that did
not work well as github can only take pull requests from
branches.
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In order to get line numbers into the ghlink we have to add a post
processing step for all xml files.
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63e1c58d27ab (PR #1725) started to compile external funs
as literals.
This commit updates the dumping of literal areas to dump
external fun literals to the crash dump.
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Compile external fun expressions to literals
OTP-15003
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* lukas/erts/tcp_send_return_closed/OTP-15001:
erts: tcp send should return {error,closed}
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* sverker/driver-taints/OTP-14960:
erts: Include foreign static linked drivers in taints
erts: Fix harmless bug in macro IS_DRIVER_VERSION_GE
erts: Remove our own NIF modules from "taints"
erts: Refactor erts_static_nif_get_nif_init
erts: Add dynamic loaded drivers to list of "taints"
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detected by valgrind. We cannot compare monitor
in state MON_FREE before it's initialized.
Still not really kosher to access 'state' without lock or atomic-op.
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* john/erts/bwt-wt-dirty-schedulers/OTP-14959:
Add +sbwt/+swt analogues for dirty schedulers
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* dgud/testcase-fixes:
debug info
add unicode opt env may contain unicode signs
Fix lexemes conversion
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jhogberg/john/erts/any-term-as-seq_trace-label/OTP-14899
Lift the type restrictions on seq_trace token labels
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That is, driver added with config option --enable-static-drivers.
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harmless until we bump major version
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The expressions fun M:F/A, when all elements are literals are also
treated as a literal. Since they have consistent representation and
don't depend on the code currently loaded in the VM, this is safe.
This can provide significant performance improvements in code using such
functions extensively - a full function call to erlang:make_fun/3 is
replaced by a single move instruction and no register shuffling or
saving registers to stack is necessary. Additionally, compound data
types that contain such external functions as elements can be treated as
literals too.
The commit also changes the representation of external funs to be a
valid Erlang syntax and adds support for literal external funs to core
Erlang.
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* rickard/signals/OTP-14589:
Fix VM probes compilation
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* raimo/type-posix-0-overhaul/ERL_550/OTP-14019:
Update types for posix error codes
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Sharing these settings for all schedulers can degrade performance,
so it makes sense to be able to configure them separately.
This also changes the default busy-wait time to "short" for both
kinds of dirty schedulers.
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I have read the man pages for most socket and file operations
on recent Linux, FreeBSD, OpenBSD and Solaris 10 and noted
the possible error codes.
Which error codes that are possible for file operations have
been updated in file:posix/0. Error codes for socket operations
in inet:posix/0. The latter refers to the former so it is
a superset, assuming that e.g sendfile and AF_UNIX socket
operations could cause socket operations to return any file
error code. That is not entirely true, but could be,
especially in the future.
Added to file:posix/0 are:
ebadmsg edeadlk edeadlock eftype emultihop enobufs enolck enolink
enosr enostr enosys eopnotsupp eoverflow erange etxtbsy
Added to inet:posix/0 are all but:
exbadport exbadseq file:posix()
These are still possible according to erl_posix_str.c,
but are not in file:posix/0 nor in inet:posix/0,
and many of them are not file nor inet related, but some might be:
e2big eadv ealign ebade ebadfd ebadr ebadrpc ebadrqc
ebadslt ebfont echild echrng ecomm edirty
edom edotdot eduppkg eidrm einit eisnam
elbin el2hlt el2nsync el3hlt el3rst
elibacc elibbad elibexec elibmax elibscn elnrng
enavail enet enoano enocsi enodata enoexec
enonet enosym enotempty enotnam enotuniq
eproclim eprocunavail eprogmismatch eprogunavail
erefused eremchg eremdev eremote eremoteio
eremoterelease erpcmismatch erremote eshutdown
esrmnt esuccesss etime etoomanyrefs
euclean eunatch eusers eversion exfull
sysnotready vernotsupported ediscon enomore
ecancelled einvalidproctable einvalidprovider eproviderfailedinit
syscallfailure service_not_found type_not_found e_no_more
e_cancelled unknown
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* rickard/signals/OTP-14589:
Fix VM probes compilation
Fix lock counting
Fix signal order for is_process_alive
Fix signal handling priority elevation
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OTP-14899
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This also removes a redundant #ifdef soup that had hidden the
problem on most platforms.
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* john/erts/async-thread-defaults/OTP-14928:
Change default async thread count to 1
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* john/erts/nif-map-from-array/OTP-14954:
Add enif_make_map_from_arrays
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* john/erts/list-installed-nifs/OTP-14965:
Add an option to ?MODULE:module_info/1 for listing NIFs
Fix a misleading comment
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to conform with erl_nif.h
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* bjorn/erts/eliminate-get_stacktrace:
Eliminate use of erlang:get_stacktrace/0 in preloaded modules
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* sverker/inline-sys_memcpy:
erts: Fix some zero size sys_memcpy
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Implementation of true asynchronous signaling between processes
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All uses of async threads in the built-in drivers have been
replaced with dirty IO, so it no longer makes sense to leave the
default at 10.
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Communication between Erlang processes has conceptually always been
performed through asynchronous signaling. The runtime system
implementation has however previously preformed most operation
synchronously. In a system with only one true thread of execution, this
is not problematic (often the opposite). In a system with multiple threads
of execution (as current runtime system implementation with SMP support)
it becomes problematic. This since it often involves locking of structures
when updating them which in turn cause resource contention. Utilizing
true asynchronous communication often avoids these resource contention
issues.
The case that triggered this change was contention on the link lock due
to frequent updates of the monitor trees during communication with a
frequently used server. The signal order delivery guarantees of the
language makes it hard to change the implementation of only some signals
to use true asynchronous signaling. Therefore the implementations
of (almost) all signals have been changed.
Currently the following signals have been implemented as true
asynchronous signals:
- Message signals
- Exit signals
- Monitor signals
- Demonitor signals
- Monitor triggered signals (DOWN, CHANGE, etc)
- Link signals
- Unlink signals
- Group leader signals
All of the above already defined as asynchronous signals in the
language. The implementation of messages signals was quite
asynchronous to begin with, but had quite strict delivery constraints
due to the ordering guarantees of signals between a pair of processes.
The previously used message queue partitioned into two halves has been
replaced by a more general signal queue partitioned into three parts
that service all kinds of signals. More details regarding the signal
queue can be found in comments in the erl_proc_sig_queue.h file.
The monitor and link implementations have also been completely replaced
in order to fit the new asynchronous signaling implementation as good
as possible. More details regarding the new monitor and link
implementations can be found in the erl_monitor_link.h file.
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