runtime: move osinit to Go

    
    This is a step toward updating libgo to 1.13.  This adds the 1.13
    version of the osinit function to Go code, and removes the
    corresponding code from the C runtime.  This should simplify future updates.
    Some additional 1.13 code was brought in to simplify this change.
    
    Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/191717

From-SVN: r275010

1 files changed, 0 insertions, 36 deletions

diff --git a/libgo/runtime/getncpu-linux.c b/libgo/runtime/getncpu-linux.c
deleted file mode 100644
index de6606f..0000000
--- a/libgo/runtime/getncpu-linux.c
+++ /dev/null
@@ -1,36 +0,0 @@
-// Copyright 2012 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-#include <features.h>
-#include <sched.h>
-
-// CPU_COUNT is only provided by glibc 2.6 or higher
-#ifndef CPU_COUNT
-#define CPU_COUNT(set) _CPU_COUNT((unsigned int *)(set), sizeof(*(set))/sizeof(unsigned int))
-static int _CPU_COUNT(unsigned int *set, size_t len) {
-	int cnt;
-
-	cnt = 0;
-	while (len--)
-		cnt += __builtin_popcount(*set++);
-	return cnt;
-}
-#endif
-
-#include "runtime.h"
-#include "defs.h"
-
-int32
-getproccount(void)
-{
-	cpu_set_t set;
-	int32 r, cnt;
-
-	cnt = 0;
-	r = sched_getaffinity(0, sizeof(set), &set);
-	if(r == 0)
-		cnt += CPU_COUNT(&set);
-
-	return cnt ? cnt : 1;
-}