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fmt: call UpdateMemStats in malloc counter

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R=golang-dev, dsymonds
CC=golang-dev
https://golang.org/cl/4830059
This commit is contained in:
Rob Pike 2011-08-04 16:32:14 +10:00
parent bb8e36b4a1
commit 583f72434f
1 changed files with 8 additions and 0 deletions
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8
src/pkg/fmt/fmt_test.go
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@ -477,28 +477,36 @@ func TestCountMallocs(t *testing.T) {
if testing.Short() {
return
}
runtime.UpdateMemStats()
mallocs := 0 - runtime.MemStats.Mallocs
for i := 0; i < 100; i++ {
Sprintf("")
}
runtime.UpdateMemStats()
mallocs += runtime.MemStats.Mallocs
Printf("mallocs per Sprintf(\"\"): %d\n", mallocs/100)
runtime.UpdateMemStats()
mallocs = 0 - runtime.MemStats.Mallocs
for i := 0; i < 100; i++ {
Sprintf("xxx")
}
runtime.UpdateMemStats()
mallocs += runtime.MemStats.Mallocs
Printf("mallocs per Sprintf(\"xxx\"): %d\n", mallocs/100)
runtime.UpdateMemStats()
mallocs = 0 - runtime.MemStats.Mallocs
for i := 0; i < 100; i++ {
Sprintf("%x", i)
}
runtime.UpdateMemStats()
mallocs += runtime.MemStats.Mallocs
Printf("mallocs per Sprintf(\"%%x\"): %d\n", mallocs/100)
runtime.UpdateMemStats()
mallocs = 0 - runtime.MemStats.Mallocs
for i := 0; i < 100; i++ {
Sprintf("%x %x", i, i)
}
runtime.UpdateMemStats()
mallocs += runtime.MemStats.Mallocs
Printf("mallocs per Sprintf(\"%%x %%x\"): %d\n", mallocs/100)
}