code review 5279048: runtime: faster and more scalable GC

src/pkg/runtime/mprof.goc

 // 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.
 
 // Malloc profiling.
 // Patterned after tcmalloc's algorithms; shorter code.
 
 package runtime
 #include "runtime.h"
 #include "arch_GOARCH.h"
@@ skipping 337 matching lines @@
                 if(all)
                         runtime·tracebackothers(g);
                 n = b.len - g->writenbuf;
                 g->writebuf = nil;
                 g->writenbuf = 0;
         }
 ········
         if(all) {
                 m->gcing = 0;
                 runtime·semrelease(&runtime·worldsema);
-                runtime·starttheworld(false);
+                runtime·starttheworld();
         }
 }
 
 static void
 saveg(byte *pc, byte *sp, G *g, TRecord *r)
 {
         int32 n;
 ········
         n = runtime·gentraceback(pc, sp, 0, g, 0, r->stk, nelem(r->stk));
         if(n < nelem(r->stk))
@@ skipping 22 matching lines @@
                         saveg(pc, sp, g, r++);
                         for(gp = runtime·allg; gp != nil; gp = gp->alllink) {
                                 if(gp == g || gp->status == Gdead)
                                         continue;
                                 saveg(gp->sched.pc, gp->sched.sp, gp, r++);
                         }
                 }
 ········
                 m->gcing = 0;
                 runtime·semrelease(&runtime·worldsema);
-                runtime·starttheworld(false);
-        }
-}
-
+                runtime·starttheworld();
+        }
+}
+