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This exposes the ability to change the modification and access times on a file.
Closes #10266
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This renames the `file` module to `fs` because that more accurately describes
its current purpose (manipulating the filesystem, not just files).
Additionally, this adds an UnstableFileStat structure as a nested structure of
FileStat to signify that the fields should not be depended on. The structure is
currently flagged with #[unstable], but it's unlikely that it has much meaning.
Closes #10241
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This adds bindings to the remaining functions provided by libuv, all of which
are useful operations on files which need to get exposed somehow.
Some highlights:
* Dropped `FileReader` and `FileWriter` and `FileStream` for one `File` type
* Moved all file-related methods to be static methods under `File`
* All directory related methods are still top-level functions
* Created `io::FilePermission` types (backed by u32) that are what you'd expect
* Created `io::FileType` and refactored `FileStat` to use FileType and
FilePermission
* Removed the expanding matrix of `FileMode` operations. The mode of reading a
file will not have the O_CREAT flag, but a write mode will always have the
O_CREAT flag.
Closes #10130
Closes #10131
Closes #10121
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This commit moves all thread-blocking I/O functions from the std::os module.
Their replacements can be found in either std::rt::io::file or in a hidden
"old_os" module inside of native::file. I didn't want to outright delete these
functions because they have a lot of special casing learned over time for each
OS/platform, and I imagine that these will someday get integrated into a
blocking implementation of IoFactory. For now, they're moved to a private module
to prevent bitrot and still have tests to ensure that they work.
I've also expanded the extensions to a few more methods defined on Path, most of
which were previously defined in std::os but now have non-thread-blocking
implementations as part of using the current IoFactory.
The api of io::file is in flux, but I plan on changing it in the next commit as
well.
Closes #10057
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Closes #9126
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These methods are all excellent candidates for default methods, so there's no
need to require extra imports of various traits.
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Closes #8811
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It's not guaranteed that there will always be an event loop to run, and this
implementation will serve as an incredibly basic one which does not provide any
I/O, but allows the scheduler to still run.
cc #9128
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descriptive names
easier-to-use api
reorganize and document
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The general idea is to remove conditions completely from I/O, so in the meantime
remove the read_error condition to mean the same thing as the io_error condition.
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When uv's TTY I/O is used for the stdio streams, the file descriptors are put
into a non-blocking mode. This means that other concurrent writes to the same
stream can fail with EAGAIN or EWOULDBLOCK. By all I/O to event-loop I/O, we
avoid this error.
There is one location which cannot move, which is the runtime's dumb_println
function. This was implemented to handle the EAGAIN and EWOULDBLOCK errors and
simply retry again and again.
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This involved changing a fair amount of code, rooted in how we access the local
IoFactory instance. I added a helper method to the rtio module to access the
optional local IoFactory. This is different than before in which it was assumed
that a local IoFactory was *always* present. Now, a separate io_error is raised
when an IoFactory is not present, yet I/O is requested.
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This removes the PathLike trait associated with this "support module". This is
yet another "container of bytes" trait, so I didn't want to duplicate what
already exists throughout libstd. In actuality, we're going to pass of C strings
to the libuv APIs, so instead the arguments are now bound with the 'ToCStr'
trait instead.
Additionally, a layer of complexity was removed by immediately converting these
type-generic parameters into CStrings to get handed off to libuv apis.
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This isn't necessary for creating processes (or at least not right now), and
it inherently attempts to expose implementation details.
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* Implement Seek for Option<Seek>
* Remove outdated comment for io::process
* De-pub a component which didn't need to be pub
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Fixes #9958
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Who doesn't like a massive renaming?
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See #9605 for detailed information.
This also fixes two tests of #8811.
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This implements a number of the baby steps needed to start eliminating everything inside of `std::io`. It turns out that there are a *lot* of users of that module, so I'm going to try to tackle them separately instead of bringing down the whole system all at once.
This pull implements a large amount of unimplemented functionality inside of `std::rt::io` including:
* Native file I/O (file descriptors, *FILE)
* Native stdio (through the native file descriptors)
* Native processes (extracted from `std::run`)
I also found that there are a number of users of `std::io` which desire to read an input line-by-line, so I added an implementation of `read_until` and `read_line` to `BufferedReader`.
With all of these changes in place, I started to axe various usages of `std::io`. There's a lot of one-off uses here-and-there, but the major use-case remaining that doesn't have a fantastic solution is `extra::json`. I ran into a few compiler bugs when attempting to remove that, so I figured I'd come back to it later instead.
There is one fairly major change in this pull, and it's moving from native stdio to uv stdio via `print` and `println`. Unfortunately logging still goes through native I/O (via `dumb_println`). This is going to need some thinking, because I still want the goal of logging/printing to be 0 allocations, and this is not possible if `io::stdio::stderr()` is called on each log message. Instead I think that this may need to be cached as the `logger` field inside the `Task` struct, but that will require a little more workings to get right (this is also a similar problem for print/println, do we cache `stdout()` to not have to re-create it every time?).
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This works around #9779, but is probably the right thing to do anyways
since that's the module where all of the documentation for those traits
lives.
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This commit fixes all of the fallout of the previous commit which is an attempt
to refine privacy. There were a few unfortunate leaks which now must be plugged,
and the most horrible one is the current `shouldnt_be_public` module now inside
`std::rt`. I think that this either needs a slight reorganization of the
runtime, or otherwise it needs to just wait for the external users of these
modules to get replaced with their `rt` implementations.
Other fixes involve making things pub which should be pub, and otherwise
updating error messages that now reference privacy instead of referencing an
"unresolved name" (yay!).
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Progress on #7981
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This is a re-landing of #8645, except that the bindings are *not* being used to
power std::run just yet. Instead, this adds the bindings as standalone bindings
inside the rt::io::process module.
I made one major change from before, having to do with how pipes are
created/bound. It's much clearer now when you can read/write to a pipe, as
there's an explicit difference (different types) between an unbound and a bound
pipe. The process configuration now takes unbound pipes (and consumes ownership
of them), and will return corresponding pipe structures back if spawning is
successful (otherwise everything is destroyed normally).
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std: remove unneeded field from RequestData struct
std: rt::uv::file - map us_fs_stat & start refactoring calls into FsRequest
std: stubbing out stat calls from the top-down into uvio
std: us_fs_* operations are now by-val self methods on FsRequest
std: post-rebase cleanup
std: add uv_fs_mkdir|rmdir + tests & minor test cleanup in rt::uv::file
WORKING: fleshing out FileStat and FileInfo + tests
std: reverting test files..
refactoring back and cleanup...
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The default buffer size is the same as the one in Java's BufferedWriter.
We may want BufferedWriter to have a Drop impl that flushes, but that
isn't possible right now due to #4252/#4430. This would be a bit
awkward due to the possibility of the inner flush failing. For what it's
worth, Java's BufferedReader doesn't have a flushing finalizer, but that
may just be because Java's finalizer support is awful.
Closes #8953
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This is a very simplistic method for host name resolution. It converts
a host name to a vector of IP addresses. Should be enough to get started.
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This is consistent with the existing documentation but was not the
actual behaviour, which I've found to be rather a nuisance, actually.
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r=brson"
This reverts commit b8d1fa399402c71331aefd634d710004e00b73a6, reversing
changes made to f22b4b169854c8a4ba86c16ee43327d6bcf94562.
Conflicts:
mk/rt.mk
src/libuv
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Closes #6436
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It's an empty stub and as one of the comments notes, doesn't belong in
libstd.
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It's an empty stub and as one of the comments notes, doesn't belong in
libstd.
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