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runtime: copy rdebug code from Go 1.7 runtime

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While we're at it, update the runtime/debug package, and start running
    its testsuite by default.  I'm not sure why runtime/debug was not
    previously updated to 1.7.  Doing that led me to fix some minor aspects
    of runtime.Stack and the C function runtime/debug.readGCStats.
    
    Reviewed-on: https://go-review.googlesource.com/31251

From-SVN: r241261
This commit is contained in:
Ian Lance Taylor 2016-10-17 16:54:25 +00:00
parent 31a84d4a65
commit 8cce07d1dd
20 changed files with 139 additions and 84 deletions
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13
libgo/go/runtime/debug/garbage_test.go
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@ -71,6 +71,19 @@ func TestReadGCStats(t *testing.T) {
t.Errorf("stats.PauseQuantiles[%d]=%d > stats.PauseQuantiles[%d]=%d", i, q[i], i+1, q[i+1])
}
}
// compare memory stats with gc stats:
if len(stats.PauseEnd) != n {
t.Fatalf("len(stats.PauseEnd) = %d, want %d", len(stats.PauseEnd), n)
}
off := (int(mstats.NumGC) + len(mstats.PauseEnd) - 1) % len(mstats.PauseEnd)
for i := 0; i < n; i++ {
dt := stats.PauseEnd[i]
if dt.UnixNano() != int64(mstats.PauseEnd[off]) {
t.Errorf("stats.PauseEnd[%d] = %d, want %d", i, dt, mstats.PauseEnd[off])
}
off = (off + len(mstats.PauseEnd) - 1) % len(mstats.PauseEnd)
}
}
var big = make([]byte, 1<<20)