code review 10136043: runtime: refactor mallocgc

src/pkg/runtime/mgc0.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.
 
 // Garbage collector.
 
 #include "runtime.h"
 #include "arch_GOARCH.h"
 #include "malloc.h"
 #include "stack.h"
@@ skipping 2280 matching lines @@
                         next = fb->next;
                         for(i=0; i<fb->cnt; i++) {
                                 f = &fb->fin[i];
                                 framesz = sizeof(uintptr) + f->nret;
                                 if(framecap < framesz) {
                                         runtime·free(frame);
                                         // The frame does not contain pointers interesting for GC,
                                         // all not yet finalized objects are stored in finc.
                                         // If we do not mark it as FlagNoPointers,
                                         // the last finalized object is not collected.
-                                        frame = runtime·mallocgc(framesz, FlagNoPointers, 0, 1);
+                                        frame = runtime·mallocgc(framesz, 0, FlagNoPointers|FlagNoInvokeGC);
                                         framecap = framesz;
                                 }
                                 *(void**)frame = f->arg;
                                 reflect·call(f->fn, frame, sizeof(uintptr) + f->nret);
                                 f->fn = nil;
                                 f->arg = nil;
                         }
                         fb->cnt = 0;
                         fb->next = finc;
                         finc = fb;
@@ skipping 197 matching lines @@
         uintptr n;
 
         n = (h->arena_used - h->arena_start) / wordsPerBitmapWord;
         n = ROUND(n, bitmapChunk);
         if(h->bitmap_mapped >= n)
                 return;
 
         runtime·SysMap(h->arena_start - n, n - h->bitmap_mapped);
         h->bitmap_mapped = n;
 }