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ARGF supports compaction, but it pins all of its references, which means
that none of it can move. This commit changes it to actually support
compaction.
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It is `exitstatus`, not `status`, per https://github.com/ruby/ruby/blob/3d5619c8b1a76626e0991d758b71afc549829c38/process.c#L581
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(#13359)
Notes:
Merged-By: ioquatix <samuel@codeotaku.com>
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Notes:
Merged-By: ioquatix <samuel@codeotaku.com>
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- `rb_thread_fd_close` is deprecated and now a no-op.
- IO operations (including close) no longer take a vm-wide lock.
Notes:
Merged-By: ioquatix <samuel@codeotaku.com>
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Notes:
Merged-By: ioquatix <samuel@codeotaku.com>
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Notes:
Merged-By: ioquatix <samuel@codeotaku.com>
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Notes:
Merged-By: ioquatix <samuel@codeotaku.com>
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Notes:
Merged-By: ioquatix <samuel@codeotaku.com>
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matz accepted at the developper meeting 2024-07-11.
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Notes:
Merged: https://github.com/ruby/ruby/pull/13021
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[Feature #21109]
By always freezing when setting the global rb_rs variable, we can ensure
it is not modified and can be accessed from a ractor.
We're also making sure it's an instance of String and does not have any
instance variables.
Of course, if $/ is changed at runtime, it may cause surprising behavior
but doing so is deprecated already anyway.
Co-authored-by: Jean Boussier <jean.boussier@gmail.com>
Notes:
Merged: https://github.com/ruby/ruby/pull/12975
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[Bug #21195]
Notes:
Merged-By: ioquatix <samuel@codeotaku.com>
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Otherwise, changes to the buffer by the destination write method
could result in data changing for supposedly independent strings.
Fixes [Bug #21131]
Notes:
Merged: https://github.com/ruby/ruby/pull/12771
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Notes:
Merged: https://github.com/ruby/ruby/pull/12497
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Notes:
Merged: https://github.com/ruby/ruby/pull/12496
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Notes:
Merged: https://github.com/ruby/ruby/pull/12496
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Notes:
Merged: https://github.com/ruby/ruby/pull/12304
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Notes:
Merged: https://github.com/ruby/ruby/pull/12023
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Notes:
Merged: https://github.com/ruby/ruby/pull/12022
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Notes:
Merged: https://github.com/ruby/ruby/pull/11811
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This does not change any actual behaviour, but provides a choke point for blocking IO operations.
* Update `IO::Buffer` to use `rb_io_blocking_region`.
* Update `File` to use `rb_io_blocking_region`.
* Update `IO` to use `rb_io_blocking_region`.
Notes:
Merged-By: ioquatix <samuel@codeotaku.com>
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Notes:
Merged-By: ioquatix <samuel@codeotaku.com>
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Notes:
Merged: https://github.com/ruby/ruby/pull/11690
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Co-Authored-By: Martin Dorey <martin.dorey@hds.com>
Notes:
Merged: https://github.com/ruby/ruby/pull/11537
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[DOC] IO.select accepts a numeric value as timeout, not only an integer.
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Since `IO.new` accepts one or two positional arguments except for the
optional hash argument, exclude the optional hash argument from the
check for delegation to `IO.new`.
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This `st_table` is used to both mark and pin classes
defined from the C API. But `vm->mark_object_ary` already
does both much more efficiently.
Currently a Ruby process starts with 252 rooted classes,
which uses `7224B` in an `st_table` or `2016B` in an `RArray`.
So a baseline of 5kB saved, but since `mark_object_ary` is
preallocated with `1024` slots but only use `405` of them,
it's a net `7kB` save.
`vm->mark_object_ary` is also being refactored.
Prior to this changes, `mark_object_ary` was a regular `RArray`, but
since this allows for references to be moved, it was marked a second
time from `rb_vm_mark()` to pin these objects.
This has the detrimental effect of marking these references on every
minors even though it's a mostly append only list.
But using a custom TypedData we can save from having to mark
all the references on minor GC runs.
Addtionally, immediate values are now ignored and not appended
to `vm->mark_object_ary` as it's just wasted space.
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This frees FL_USER0 on both T_MODULE and T_CLASS.
Note: prior to this, FL_SINGLETON was never set on T_MODULE,
so checking for `FL_SINGLETON` without first checking that
`FL_TYPE` was `T_CLASS` was valid. That's no longer the case.
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[Feature #16495]
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[Bug #20169]
Embedded strings are not safe for system calls without the GVL because
compaction can cause pages to be locked causing the operation to fail
with EFAULT. This commit changes io_fwrite to use rb_str_tmp_frozen_no_embed_acquire,
which guarantees that the return string is not embedded.
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The macro SafeStringValue() became just StringValue() in c5c05460ac2,
and it is deprecated nowadays.
This patch replaces remaining macro usage. Some occurrences are left in
ext/stringio and ext/win32ole, they should be fixed upstream.
The macro itself is not deleted, because it may be used in extensions.
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When opening a file with `File.open`, and then setting the encoding with
`IO#set_encoding`, it still correctly performs CRLF -> LF conversion on
Windows when reading files with a CRLF line ending in them (in text
mode).
However, the file is opened instead with either the `rb_io_fdopen` or
`rb_file_open` APIs from C, the CRLF conversion is _NOT_ set up
correctly; it works if the encoding is not specified, but if
`IO#set_encoding` is called, the conversion stops happening. This seems
to be because the encflags never get ECONV_DEFAULT_NEWLINE_DECORATOR
set in these codepaths.
Concretely, this means that the conversion doesn't happen in the
following circumstances:
* When loading ruby files with require (that calls rb_io_fdopen)
* When parsing ruuby files with RubyVM::AbstractSyntaxTree (that calls
rb_file_open).
This then causes the ErrorHighlight tests to fail on windows if git has
checked them out with CRLF line endings - the error messages it's
testing wind up with literal \r\n sequences in them because the iseq
text from the parser contains un-newline-converted strings.
This commit fixes the problem by copy-pasting the relevant snippet which
sets this up in `rb_io_extract_modeenc` (for the File.open path) into
the relevant codepaths for `rb_io_fdopen` and `rb_file_open`.
[Bug #20101]
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Before this patch, the MN scheduler waits for the IO with the
following steps:
1. `poll(fd, timeout=0)` to check fd is ready or not.
2. if fd is not ready, waits with MN thread scheduler
3. call `func` to issue the blocking I/O call
The advantage of advanced `poll()` is we can wait for the
IO ready for any fds. However `poll()` becomes overhead
for already ready fds.
This patch changes the steps like:
1. call `func` to issue the blocking I/O call
2. if the `func` returns `EWOULDBLOCK` the fd is `O_NONBLOCK`
and we need to wait for fd is ready so that waits with MN
thread scheduler.
In this case, we can wait only for `O_NONBLOCK` fds. Otherwise
it waits with blocking operations such as `read()` system call.
However we don't need to call `poll()` to check fd is ready
in advance.
With this patch we can observe performance improvement
on microbenchmark which repeats blocking I/O (not
`O_NONBLOCK` fd) with and without MN thread scheduler.
```ruby
require 'benchmark'
f = open('/dev/null', 'w')
f.sync = true
TN = 1
N = 1_000_000 / TN
Benchmark.bm{|x|
x.report{
TN.times.map{
Thread.new{
N.times{f.print '.'}
}
}.each(&:join)
}
}
__END__
TN = 1
user system total real
ruby32 0.393966 0.101122 0.495088 ( 0.495235)
ruby33 0.493963 0.089521 0.583484 ( 0.584091)
ruby33+MN 0.639333 0.200843 0.840176 ( 0.840291) <- Slow
this+MN 0.512231 0.099091 0.611322 ( 0.611074) <- Good
```
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