From: Russ Cox <rsc@golang.org>
Date: Tue, 10 Jan 2012 02:45:59 +0000 (-0800)
Subject: runtime: add NumCPU
X-Git-Tag: weekly.2012-01-15~105
X-Git-Url: http://www.git.cypherpunks.su/?a=commitdiff_plain;h=6dfdd4c1e34c753fb9c897eee355ee6ca3f007a8;p=gostls13.git

runtime: add NumCPU

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/5528061
---

diff --git a/src/pkg/runtime/extern.go b/src/pkg/runtime/extern.go
index ea36355e66..e86da01732 100644
--- a/src/pkg/runtime/extern.go
+++ b/src/pkg/runtime/extern.go
@@ -107,6 +107,9 @@ func (f *Func) FileLine(pc uintptr) (file string, line int) {
 // mid returns the current os thread (m) id.
 func mid() uint32
 
+// NumCPU returns the number of CPUs on the local machine.
+func NumCPU() int
+
 // Semacquire waits until *s > 0 and then atomically decrements it.
 // It is intended as a simple sleep primitive for use by the synchronization
 // library and should not be used directly.
diff --git a/src/pkg/runtime/runtime1.goc b/src/pkg/runtime/runtime1.goc
index da2d0c5720..667131c1ee 100644
--- a/src/pkg/runtime/runtime1.goc
+++ b/src/pkg/runtime/runtime1.goc
@@ -8,3 +8,7 @@ package runtime
 func GOMAXPROCS(n int32) (ret int32) {
 	ret = runtime·gomaxprocsfunc(n);
 }
+
+func NumCPU() (ret int32) {
+	ret = runtime·ncpu;
+}