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author | Tianon Gravi <admwiggin@gmail.com> | 2015-01-15 11:54:00 -0700 |
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committer | Tianon Gravi <admwiggin@gmail.com> | 2015-01-15 11:54:00 -0700 |
commit | f154da9e12608589e8d5f0508f908a0c3e88a1bb (patch) | |
tree | f8255d51e10c6f1e0ed69702200b966c9556a431 /src/pkg/runtime/debug/garbage_test.go | |
parent | 8d8329ed5dfb9622c82a9fbec6fd99a580f9c9f6 (diff) | |
download | golang-upstream/1.4.tar.gz |
Imported Upstream version 1.4upstream/1.4
Diffstat (limited to 'src/pkg/runtime/debug/garbage_test.go')
-rw-r--r-- | src/pkg/runtime/debug/garbage_test.go | 102 |
1 files changed, 0 insertions, 102 deletions
diff --git a/src/pkg/runtime/debug/garbage_test.go b/src/pkg/runtime/debug/garbage_test.go deleted file mode 100644 index 149bafc6f..000000000 --- a/src/pkg/runtime/debug/garbage_test.go +++ /dev/null @@ -1,102 +0,0 @@ -// Copyright 2013 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. - -package debug - -import ( - "runtime" - "testing" - "time" -) - -func TestReadGCStats(t *testing.T) { - defer SetGCPercent(SetGCPercent(-1)) - - var stats GCStats - var mstats runtime.MemStats - var min, max time.Duration - - // First ReadGCStats will allocate, second should not, - // especially if we follow up with an explicit garbage collection. - stats.PauseQuantiles = make([]time.Duration, 10) - ReadGCStats(&stats) - runtime.GC() - - // Assume these will return same data: no GC during ReadGCStats. - ReadGCStats(&stats) - runtime.ReadMemStats(&mstats) - - if stats.NumGC != int64(mstats.NumGC) { - t.Errorf("stats.NumGC = %d, but mstats.NumGC = %d", stats.NumGC, mstats.NumGC) - } - if stats.PauseTotal != time.Duration(mstats.PauseTotalNs) { - t.Errorf("stats.PauseTotal = %d, but mstats.PauseTotalNs = %d", stats.PauseTotal, mstats.PauseTotalNs) - } - if stats.LastGC.UnixNano() != int64(mstats.LastGC) { - t.Errorf("stats.LastGC.UnixNano = %d, but mstats.LastGC = %d", stats.LastGC.UnixNano(), mstats.LastGC) - } - n := int(mstats.NumGC) - if n > len(mstats.PauseNs) { - n = len(mstats.PauseNs) - } - if len(stats.Pause) != n { - t.Errorf("len(stats.Pause) = %d, want %d", len(stats.Pause), n) - } else { - off := (int(mstats.NumGC) + len(mstats.PauseNs) - 1) % len(mstats.PauseNs) - for i := 0; i < n; i++ { - dt := stats.Pause[i] - if dt != time.Duration(mstats.PauseNs[off]) { - t.Errorf("stats.Pause[%d] = %d, want %d", i, dt, mstats.PauseNs[off]) - } - if max < dt { - max = dt - } - if min > dt || i == 0 { - min = dt - } - off = (off + len(mstats.PauseNs) - 1) % len(mstats.PauseNs) - } - } - - q := stats.PauseQuantiles - nq := len(q) - if q[0] != min || q[nq-1] != max { - t.Errorf("stats.PauseQuantiles = [%d, ..., %d], want [%d, ..., %d]", q[0], q[nq-1], min, max) - } - - for i := 0; i < nq-1; i++ { - if q[i] > q[i+1] { - t.Errorf("stats.PauseQuantiles[%d]=%d > stats.PauseQuantiles[%d]=%d", i, q[i], i+1, q[i+1]) - } - } -} - -var big = make([]byte, 1<<20) - -func TestFreeOSMemory(t *testing.T) { - var ms1, ms2 runtime.MemStats - - if big == nil { - t.Skip("test is not reliable when run multiple times") - } - big = nil - runtime.GC() - runtime.ReadMemStats(&ms1) - FreeOSMemory() - runtime.ReadMemStats(&ms2) - if ms1.HeapReleased >= ms2.HeapReleased { - t.Errorf("released before=%d; released after=%d; did not go up", ms1.HeapReleased, ms2.HeapReleased) - } -} - -func TestSetGCPercent(t *testing.T) { - // Test that the variable is being set and returned correctly. - // Assume the percentage itself is implemented fine during GC, - // which is harder to test. - old := SetGCPercent(123) - new := SetGCPercent(old) - if new != 123 { - t.Errorf("SetGCPercent(123); SetGCPercent(x) = %d, want 123", new) - } -} |