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runtime: instrument malloc + garbage collector.

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add simple garbage collection benchmark.

R=iant
CC=golang-dev
https://golang.org/cl/204053
This commit is contained in:
Russ Cox 2010-02-08 14:32:22 -08:00
parent 49c4256913
commit e4f06812c5
14 changed files with 340 additions and 2 deletions
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4
src/pkg/runtime/malloc.cgo
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@ -46,6 +46,8 @@ mallocgc(uintptr size, uint32 refflag, int32 dogc)
if(v == nil)
throw("out of memory");
mstats.alloc += size;
mstats.total_alloc += size;
mstats.by_size[sizeclass].nmalloc++;
} else {
// TODO(rsc): Report tracebacks for very large allocations.
@ -57,6 +59,7 @@ mallocgc(uintptr size, uint32 refflag, int32 dogc)
if(s == nil)
throw("out of memory");
mstats.alloc += npages<<PageShift;
mstats.total_alloc += npages<<PageShift;
v = (void*)(s->start << PageShift);
}
@ -127,6 +130,7 @@ free(void *v)
size = class_to_size[sizeclass];
runtime_memclr(v, size);
mstats.alloc -= size;
mstats.by_size[sizeclass].nfree++;
MCache_Free(c, v, sizeclass, size);
out: