A Rust library implementing safe, lightweight context switches, without relying on kernel services

edef cbc10fd311 cache page_size ... page_size is used in every nearly every pointer calculation in os.rs, and the Stack methods are called fairly often. It's definitely not worth spilling registers for to call out to a libc function. With this change, page_size becomes effectively free. It is cached in an atomic usize, with relaxed ordering, so no actual atomic operations are involved. Benchmark: ``` test bench_page_size ... bench: 5 ns/iter (+/- 1) test bench_page_size_cached ... bench: 0 ns/iter (+/- 0) ```		2015-04-16 05:52:56 -04:00
benches	return a Result from StackSource::get_stack with an associated Error	2015-04-16 04:14:18 -04:00
examples	return a Result from StackSource::get_stack with an associated Error	2015-04-16 04:14:18 -04:00
src	cache page_size	2015-04-16 05:52:56 -04:00
.editorconfig	add .editorconfig	2015-04-16 04:17:55 -04:00
.gitignore	initial commit	2014-12-23 04:27:28 +01:00
build.rs	make Valgrind optional	2015-04-16 03:22:57 -04:00
Cargo.toml	make Valgrind optional	2015-04-16 03:22:57 -04:00
LICENSE	include valgrind.h, so we don't depend on Valgrind at build time	2015-04-16 04:32:56 -04:00