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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-06-08 04:09:35 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-06-08 04:09:35 +0000 |
commit | 14eb78c08c384545949758f2c00d8d44f06309a4 (patch) | |
tree | a33eb094d8630008a906374b2b30b627f237820b /src/runtime/metrics_test.go | |
parent | Releasing progress-linux version 1.21.10-1~progress7.99u1. (diff) | |
download | golang-1.21-14eb78c08c384545949758f2c00d8d44f06309a4.tar.xz golang-1.21-14eb78c08c384545949758f2c00d8d44f06309a4.zip |
Merging upstream version 1.21.11.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/runtime/metrics_test.go')
-rw-r--r-- | src/runtime/metrics_test.go | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/src/runtime/metrics_test.go b/src/runtime/metrics_test.go index cfb09a3..55d7dc4 100644 --- a/src/runtime/metrics_test.go +++ b/src/runtime/metrics_test.go @@ -761,3 +761,38 @@ func TestCPUMetricsSleep(t *testing.T) { } t.Errorf(`time.Sleep did not contribute enough to "idle" class: minimum idle time = %.5fs`, minIdleCPUSeconds) } + +func TestMetricHeapUnusedLargeObjectOverflow(t *testing.T) { + // This test makes sure /memory/classes/heap/unused:bytes + // doesn't overflow when allocating and deallocating large + // objects. It is a regression test for #67019. + done := make(chan struct{}) + var wg sync.WaitGroup + wg.Add(1) + go func() { + defer wg.Done() + for { + for i := 0; i < 10; i++ { + runtime.Escape(make([]byte, 1<<20)) + } + runtime.GC() + select { + case <-done: + return + default: + } + } + }() + s := []metrics.Sample{ + {Name: "/memory/classes/heap/unused:bytes"}, + } + for i := 0; i < 1000; i++ { + metrics.Read(s) + if s[0].Value.Uint64() > 1<<40 { + t.Errorf("overflow") + break + } + } + done <- struct{}{} + wg.Wait() +} |