diff options
| author | Hector Chu <hectorchu@gmail.com> | 2010-01-06 17:58:55 -0800 |
|---|---|---|
| committer | Russ Cox <rsc@golang.org> | 2010-01-06 17:58:55 -0800 |
| commit | 6bfe5f55f4dc110ca43a202a6a5eb70ee477916b (patch) | |
| tree | 3ef0b1e03a660d7e220471a0ae9485cc16756632 /src/pkg/runtime/runtime.c | |
| parent | 5c07e0c17ce6a0627a2fe4bbc4254b322ec879ce (diff) | |
| download | go-6bfe5f55f4dc110ca43a202a6a5eb70ee477916b.tar.xz | |
Ported runtime to Windows.
R=rsc
CC=golang-dev
https://golang.org/cl/176066
Diffstat (limited to 'src/pkg/runtime/runtime.c')
| -rw-r--r-- | src/pkg/runtime/runtime.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/src/pkg/runtime/runtime.c b/src/pkg/runtime/runtime.c index 4a0309e0c7..8588894624 100644 --- a/src/pkg/runtime/runtime.c +++ b/src/pkg/runtime/runtime.c @@ -165,6 +165,20 @@ goargs(void) os·Envs.cap = envc; } +// Atomic add and return new value. +uint32 +xadd(uint32 volatile *val, int32 delta) +{ + uint32 oval, nval; + + for(;;){ + oval = *val; + nval = oval + delta; + if(cas(val, oval, nval)) + return nval; + } +} + byte* getenv(int8 *s) { |