code review 5697066: runtime/pprof: support OS X CPU profiling

src/pkg/runtime/thread_linux.c

 // Copyright 2009 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 "runtime.h"
 #include "defs_GOOS_GOARCH.h"
 #include "os_GOOS.h"
 #include "stack.h"
 
 extern SigTab runtime·sigtab[];
@@ skipping 210 matching lines @@
         }
         runtime·panicstring(runtime·sigtab[g->sig].name);
 }
 
 uintptr
 runtime·memlimit(void)
 {
         Rlimit rl;
         extern byte text[], end[];
         uintptr used;
-        
+
         if(runtime·getrlimit(RLIMIT_AS, &rl) != 0)
                 return 0;
         if(rl.rlim_cur >= 0x7fffffff)
                 return 0;
 
         // Estimate our VM footprint excluding the heap.
         // Not an exact science: use size of binary plus
         // some room for thread stacks.
         used = end - text + (64<<20);
         if(used >= rl.rlim_cur)
                 return 0;
 
         // If there's not at least 16 MB left, we're probably
         // not going to be able to do much.  Treat as no limit.
         rl.rlim_cur -= used;
         if(rl.rlim_cur < (16<<20))
                 return 0;
 
         return rl.rlim_cur - used;
 }
+
+void
+runtime·setprof(bool on)
+{
+        USED(on);
+}