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Bug 875000 - Only attempt to tweak StrictMode on API 9+. r=trivial (bustage)

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This commit is contained in:
Richard Newman 2013-05-22 11:26:46 -07:00
parent d16755d75d
commit 492de00edf
1 changed files with 14 additions and 4 deletions
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18
mobile/android/base/SysInfo.java.in
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@ -50,22 +50,32 @@ public final class SysInfo {
return cpuCount;
}
if (android.os.Build.VERSION.SDK_INT < 9) {
return readCPUCount();
}
// Avoid a strict mode warning... but only on devices that have StrictMode.
StrictMode.ThreadPolicy savedPolicy = StrictMode.allowThreadDiskReads();
try {
return readCPUCount();
} finally {
StrictMode.setThreadPolicy(savedPolicy);
}
}
private static int readCPUCount() {
class CpuFilter implements FileFilter {
@Override
public boolean accept(File pathname) {
return Pattern.matches("cpu[0-9]+", pathname.getName());
}
}
StrictMode.ThreadPolicy savedPolicy = StrictMode.allowThreadDiskReads();
try {
final File dir = new File("/sys/devices/system/cpu/");
return cpuCount = dir.listFiles(new CpuFilter()).length;
} catch (Exception e) {
Log.w(LOG_TAG, "Assuming 1 CPU; got exception.", e);
return cpuCount = 1;
} finally {
StrictMode.setThreadPolicy(savedPolicy);
}
}