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Alex Crichton e8f72c38f4 Cache and buffer stdout per-task for printing 
Almost all languages provide some form of buffering of the stdout stream, and
this commit adds this feature for rust. A handle to stdout is lazily initialized
in the Task structure as a buffered owned Writer trait object. The buffer
behavior depends on where stdout is directed to. Like C, this line-buffers the
stream when the output goes to a terminal (flushes on newlines), and also like C
this uses a fixed-size buffer when output is not directed at a terminal.

We may decide the fixed-size buffering is overkill, but it certainly does reduce
write syscall counts when piping output elsewhere. This is a *huge* benefit to
any code using logging macros or the printing macros. Formatting emits calls to
`write` very frequently, and to have each of them backed by a write syscall was
very expensive.

In a local benchmark of printing 10000 lines of "what" to stdout, I got the
following timings:

  when |  terminal   |  redirected
----------------------------------
before |  0.575s     |   0.525s
after  |  0.197s     |   0.013s
  C    |  0.019s     |   0.004s

I can also confirm that we're buffering the output appropriately in both
situtations. We're still far slower than C, but I believe much of that has to do
with the "homing" that all tasks due, we're still performing an order of
magnitude more write syscalls than C does.
2013-10-25 10:31:57 -07:00
doc Test fixes and merge conflicts 2013-10-24 14:21:58 -07:00
man remove the rusti command 2013-10-16 22:54:38 -04:00
mk rustpkg: Support arbitrary dependencies in the install API 2013-10-22 20:41:29 -07:00
src Cache and buffer stdout per-task for printing 2013-10-25 10:31:57 -07:00
.gitattributes drop the linenoise library 2013-10-16 22:57:51 -04:00
.gitignore doc: tidy and cleanup CSS deps, add tutorial PDF generation 2013-10-21 04:12:12 +02:00
.gitmodules
.mailmap
AUTHORS.txt
configure Remove jemalloc from the runtime 2013-10-18 10:38:21 -07:00
CONTRIBUTING.md syntax: Add the Bug Report HOWTO URL to the ICE message 2013-10-21 12:11:24 -07:00
COPYRIGHT
LICENSE-APACHE
LICENSE-MIT
Makefile.in auto merge of #9919 : alexcrichton/rust/fmt-begone, r=huonw 2013-10-18 18:26:23 -07:00
README.md
RELEASES.txt remove the rusti command 2013-10-16 22:54:38 -04:00

README.md

The Rust Programming Language

This is a compiler for Rust, including standard libraries, tools and documentation.

Quick Start

Windows

  1. Download and use the installer.
  2. Read the tutorial.
  3. Enjoy!

Note: Windows users should read the detailed getting started notes on the wiki. Even when using the binary installer the Windows build requires a MinGW installation, the precise details of which are not discussed here.

Linux / OS X

  1. Install the prerequisites (if not already installed)

    • g++ 4.4 or clang++ 3.x
    • python 2.6 or later (but not 3.x)
    • perl 5.0 or later
    • gnu make 3.81 or later
    • curl

  2. Download and build Rust You can either download a tarball or build directly from the repo.

    To build from the tarball do:

     $ curl -O http://static.rust-lang.org/dist/rust-0.8.tar.gz
 $ tar -xzf rust-0.8.tar.gz
 $ cd rust-0.8

    Or to build from the repo do:

     $ git clone https://github.com/mozilla/rust.git
 $ cd rust

    Now that you have Rust's source code, you can configure and build it:

     $ ./configure
 $ make && make install

    You may need to use sudo make install if you do not normally have permission to modify the destination directory. The install locations can be adjusted by passing a --prefix argument to configure. Various other options are also supported, pass --help for more information on them.

    When complete, make install will place several programs into /usr/local/bin: rustc, the Rust compiler; rustdoc, the API-documentation tool, and rustpkg, the Rust package manager and build system.

  3. Read the tutorial.

  4. Enjoy!

Notes

Since the Rust compiler is written in Rust, it must be built by a precompiled "snapshot" version of itself (made in an earlier state of development). As such, source builds require a connection to the Internet, to fetch snapshots, and an OS that can execute the available snapshot binaries.

Snapshot binaries are currently built and tested on several platforms:

  • Windows (7, Server 2008 R2), x86 only
  • Linux (various distributions), x86 and x86-64
  • OSX 10.6 ("Snow Leopard") or greater, x86 and x86-64

You may find that other platforms work, but these are our "tier 1" supported build environments that are most likely to work.

Rust currently needs about 1.8G of RAM to build without swapping; if it hits swap, it will take a very long time to build.

There is lots more documentation in the wiki.

License

Rust is primarily distributed under the terms of both the MIT license and the Apache License (Version 2.0), with portions covered by various BSD-like licenses.

See LICENSE-APACHE, LICENSE-MIT, and COPYRIGHT for details.