| package cpuid |
| |
| import ( |
| "os/exec" |
| "strconv" |
| "strings" |
| "testing" |
| ) |
| |
| // Tests that the returned L1 instruction cache value matches the value returned from |
| // a call to the OS `sysctl` utility. Skips the test if we can't run it. |
| func TestDarwinL1ICache(t *testing.T) { |
| out, err := exec.Command("/usr/sbin/sysctl", "-n", "hw.l1icachesize").Output() |
| if err != nil { |
| t.Skipf("cannot run sysctl utility: %v", err) |
| return |
| } |
| v, err := strconv.ParseInt(strings.TrimSpace(string(out)), 10, 0) |
| if err != nil { |
| t.Skipf("sysctl output %q could not be parsed as int: %v", string(out), err) |
| return |
| } |
| if CPU.Cache.L1I != int(v) { |
| t.Fatalf("sysctl output %q did not match CPU.Cache.L1I %d", string(out), CPU.Cache.L1I) |
| } |
| } |
| |
| // Tests that the returned L1 data cache value matches the value returned from a call |
| // to the OS `sysctl` utility. Skips the test if we can't run it. |
| func TestDarwinL1DCache(t *testing.T) { |
| out, err := exec.Command("/usr/sbin/sysctl", "-n", "hw.l1dcachesize").Output() |
| if err != nil { |
| t.Skipf("cannot run sysctl utility: %v", err) |
| return |
| } |
| v, err := strconv.ParseInt(strings.TrimSpace(string(out)), 10, 0) |
| if err != nil { |
| t.Skipf("sysctl output %q could not be parsed as int: %v", string(out), err) |
| return |
| } |
| if CPU.Cache.L1D != int(v) { |
| t.Fatalf("sysctl output %q did not match CPU.Cache.L1D %d", string(out), CPU.Cache.L1D) |
| } |
| } |