long actualheap = newLong(getFlagValue("MaxHeapSize", stdout)).longValue(); if (actualheap != expectheap) { thrownew RuntimeException("MaxHeapSize value set to " + actualheap + ", expected " + expectheap + " when running with the following flags: " + Arrays.asList(args).toString());
}
boolean actualcoop = getFlagBoolValue("UseCompressedOops", stdout); if (actualcoop != expectcoop) { thrownew RuntimeException("UseCompressedOops set to " + actualcoop + ", expected " + expectcoop + " when running with the following flags: " + Arrays.asList(args).toString());
}
}
privatestatic String getFlagValue(String flag, String where) {
Matcher m = Pattern.compile(flag + "\\s+:?=\\s+\\d+").matcher(where); if (!m.find()) { thrownew RuntimeException("Could not find value for flag " + flag + " in output string");
}
String match = m.group(); return match.substring(match.lastIndexOf(" ") + 1, match.length());
}
privatestaticboolean getFlagBoolValue(String flag, String where) {
Matcher m = Pattern.compile(flag + "\\s+:?= (true|false)").matcher(where); if (!m.find()) { thrownew RuntimeException("Could not find value for flag " + flag + " in output string");
} return m.group(1).equals("true");
}
publicstaticvoid main(String args[]) throws Exception { // Tests // 1. Verify that MaxRAMPercentage overrides UseCompressedOops Ergo // 2. Verify that UseCompressedOops forces compressed oops limit even // when other flags are specified.
long oneG = 1L * 1024L * 1024L * 1024L;
// Hotspot startup logic reduces MaxHeapForCompressedOops by HeapBaseMinAddress // in order to get zero based compressed oops offsets. long heapbaseminaddr = getHeapBaseMinAddress(); long maxcoopheap = TestUseCompressedOopsErgoTools.getMaxHeapForCompressedOops(new String [0]) - heapbaseminaddr;
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