bors f681420624 auto merge of #15915 : erickt/rust/master, r=alexcrichton ... std: rename MemWriter to SeekableMemWriter, add seekless MemWriter Not all users of MemWriter need to seek, but having MemWriter seekable adds between 3-29% in overhead in certain circumstances. This fixes that performance gap by making a non-seekable MemWriter, and creating a new SeekableMemWriter for those circumstances when that functionality is actually needed. ``` test io::mem::test::bench_buf_reader ... bench: 682 ns/iter (+/- 85) test io::mem::test::bench_buf_writer ... bench: 580 ns/iter (+/- 57) test io::mem::test::bench_mem_reader ... bench: 793 ns/iter (+/- 99) test io::mem::test::bench_mem_writer_001_0000 ... bench: 48 ns/iter (+/- 27) test io::mem::test::bench_mem_writer_001_0010 ... bench: 65 ns/iter (+/- 27) = 153 MB/s test io::mem::test::bench_mem_writer_001_0100 ... bench: 132 ns/iter (+/- 12) = 757 MB/s test io::mem::test::bench_mem_writer_001_1000 ... bench: 802 ns/iter (+/- 151) = 1246 MB/s test io::mem::test::bench_mem_writer_100_0000 ... bench: 481 ns/iter (+/- 28) test io::mem::test::bench_mem_writer_100_0010 ... bench: 1957 ns/iter (+/- 126) = 510 MB/s test io::mem::test::bench_mem_writer_100_0100 ... bench: 8222 ns/iter (+/- 434) = 1216 MB/s test io::mem::test::bench_mem_writer_100_1000 ... bench: 82496 ns/iter (+/- 11191) = 1212 MB/s test io::mem::test::bench_seekable_mem_writer_001_0000 ... bench: 48 ns/iter (+/- 2) test io::mem::test::bench_seekable_mem_writer_001_0010 ... bench: 64 ns/iter (+/- 2) = 156 MB/s test io::mem::test::bench_seekable_mem_writer_001_0100 ... bench: 129 ns/iter (+/- 7) = 775 MB/s test io::mem::test::bench_seekable_mem_writer_001_1000 ... bench: 801 ns/iter (+/- 159) = 1248 MB/s test io::mem::test::bench_seekable_mem_writer_100_0000 ... bench: 711 ns/iter (+/- 51) test io::mem::test::bench_seekable_mem_writer_100_0010 ... bench: 2532 ns/iter (+/- 227) = 394 MB/s test io::mem::test::bench_seekable_mem_writer_100_0100 ... bench: 8962 ns/iter (+/- 947) = 1115 MB/s test io::mem::test::bench_seekable_mem_writer_100_1000 ... bench: 85086 ns/iter (+/- 11555) = 1175 MB/s ```		2014-07-30 14:41:18 +00:00
..
collections	doc: reduce overlong sentence	2014-07-28 23:22:47 +02:00
io	auto merge of #15915 : erickt/rust/master, r=alexcrichton	2014-07-30 14:41:18 +00:00
num	collections: Move push/pop to MutableSeq	2014-07-23 13:20:10 -07:00
path	Remove references to non-existant functions in the std::path documentation	2014-07-29 15:44:03 -07:00
rand	Improve documentation for rand::random	2014-07-18 21:19:51 -04:00
rt	Revert "Use fewer instructions for fail!"	2014-07-25 15:57:15 -07:00
sync	libstd: set baseline stability levels.	2014-06-30 22:49:18 -07:00
ascii.rs	Add deprecated aliases for the old {Owned,}StrAsciiExt trait names.	2014-07-29 23:59:19 +01:00
bitflags.rs	libstd: set baseline stability levels.	2014-06-30 22:49:18 -07:00
c_vec.rs	libstd: set baseline stability levels.	2014-06-30 22:49:18 -07:00
dynamic_lib.rs	collections: Move push/pop to MutableSeq	2014-07-23 13:20:10 -07:00
failure.rs	Stabilization for owned (now boxed) and cell	2014-07-13 12:52:51 -07:00
fmt.rs	auto merge of #15867 : cmr/rust/rewrite-lexer4, r=alexcrichton	2014-07-22 07:16:17 +00:00
from_str.rs	std: Rename the ToStr trait to ToString, and to_str to to_string.	2014-07-08 13:01:43 -07:00
gc.rs	libstd: set baseline stability levels.	2014-06-30 22:49:18 -07:00
hash.rs	mark std::hash experimental	2014-07-11 14:25:15 -07:00
lib.rs	collections: Move push/pop to MutableSeq	2014-07-23 13:20:10 -07:00
macros.rs	Revert "Use fewer instructions for fail!"	2014-07-25 15:57:15 -07:00
os.rs	Add string::raw::from_buf	2014-07-24 07:25:43 -07:00
prelude.rs	Remove OwnedStr trait	2014-07-24 07:25:43 -07:00
rtdeps.rs	libstd: set baseline stability levels.	2014-06-30 22:49:18 -07:00
task.rs	Rename to_str to to_string	2014-07-21 09:54:52 -07:00
to_string.rs	Rename to_str to to_string	2014-07-21 09:54:52 -07:00