| // Copyright 2011 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. |
| // Test that goroutines and garbage collection run during init. |
| memstats := new(runtime.MemStats) |
| runtime.ReadMemStats(memstats) |
| sys, numGC := memstats.Sys, memstats.NumGC |
| // Generate 1,000 MB of garbage, only retaining 1 MB total. |
| // Verify that the garbage collector ran by seeing if we |
| // allocated fewer than N*MB bytes from the system. |
| runtime.ReadMemStats(memstats) |
| sys1, numGC1 := memstats.Sys, memstats.NumGC |
| if sys1-sys >= N*MB || numGC1 == numGC { |
| println("allocated 1000 chunks of", MB, "and used ", sys1-sys, "memory") |
| println("numGC went", numGC, "to", numGC) |