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runtime: fix MemStats on 32-bits

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Int64's do not fit into uintptr's.

LGTM=khr
R=golang-codereviews, khr, rsc
CC=golang-codereviews, rlh
https://golang.org/cl/128380043
This commit is contained in:
Dmitriy Vyukov 2014-08-19 11:53:20 +04:00
parent 5d40742728
commit 266d350f5e
3 changed files with 10 additions and 5 deletions
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4
src/pkg/runtime/gc_test.go
View File

@ -164,6 +164,10 @@ func TestGcLastTime(t *testing.T) {
if t0 > last || last > t1 {
t.Fatalf("bad last GC time: got %v, want [%v, %v]", last, t0, t1)
}
pause := ms.PauseNs[(ms.NumGC+255)%256]
if pause == 0 || pause > 10e9 {
t.Fatalf("bad last GC pause: got %v, want [0, 10e9]", pause)
}
}
var hugeSink interface{}

7
src/pkg/runtime/malloc.go
View File

@ -477,11 +477,12 @@ func gogc(force int32) {
startTime = gonanotime()
}
// switch to g0, call gc, then switch back
mp.scalararg[0] = uint(startTime)
mp.scalararg[0] = uint(uint32(startTime)) // low 32 bits
mp.scalararg[1] = uint(startTime >> 32) // high 32 bits
if force >= 2 {
mp.scalararg[1] = 1 // eagersweep
mp.scalararg[2] = 1 // eagersweep
} else {
mp.scalararg[1] = 0
mp.scalararg[2] = 0
}
onM(&gc_m)
}

4
src/pkg/runtime/mgc0.c
View File

@ -1401,8 +1401,8 @@ runtime·gc_m(void)
gp->status = Gwaiting;
gp->waitreason = "garbage collection";
a.start_time = g->m->scalararg[0];
a.eagersweep = g->m->scalararg[1];
a.start_time = (uint64)(g->m->scalararg[0]) | ((uint64)(g->m->scalararg[1]) << 32);
a.eagersweep = g->m->scalararg[2];
gc(&a);
gp->status = Grunning;