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8041992: Fix of JDK-8034775 neglects to account for non-JIT VMs

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Allow 0 compiler threads if no JIT is used.

Reviewed-by: kvn, dholmes
This commit is contained in:
Severin Gehwolf 2014-05-02 06:24:39 +02:00 committed by Albert Noll
parent d9056b18ee
commit a92fee550e
2 changed files with 18 additions and 1 deletions
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2
hotspot/src/share/vm/runtime/arguments.cpp
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@ -2399,7 +2399,7 @@ bool Arguments::check_vm_args_consistency() {
status &= verify_interval(CodeCacheSegmentSize, 1, 1024, "CodeCacheSegmentSize");
// TieredCompilation needs at least 2 compiler threads.
const int num_min_compiler_threads = (TieredCompilation && (TieredStopAtLevel >= CompLevel_full_optimization)) ? 2 : 1;
const int num_min_compiler_threads = (TieredCompilation && (TieredStopAtLevel >= CompLevel_full_optimization)) ? 2 : CI_COMPILER_COUNT;
status &=verify_min_value(CICompilerCount, num_min_compiler_threads, "CICompilerCount");
if (!FLAG_IS_DEFAULT(CICompilerCount) && !FLAG_IS_DEFAULT(CICompilerCountPerCPU) && CICompilerCountPerCPU) {

17
hotspot/test/compiler/startup/NumCompilerThreadsCheck.java
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@ -30,11 +30,28 @@
import com.oracle.java.testlibrary.*;
public class NumCompilerThreadsCheck {
public static void main(String[] args) throws Exception {
ProcessBuilder pb = ProcessTools.createJavaProcessBuilder("-XX:CICompilerCount=-1");
OutputAnalyzer out = new OutputAnalyzer(pb.start());
String expectedOutput = "CICompilerCount of -1 is invalid";
out.shouldContain(expectedOutput);
if (isZeroVm()) {
String expectedLowWaterMarkText = "must be at least 0";
out.shouldContain(expectedLowWaterMarkText);
}
}
private static boolean isZeroVm() {
String vmName = System.getProperty("java.vm.name");
if (vmName == null) {
throw new RuntimeException("No VM name");
}
if (vmName.toLowerCase().contains("zero")) {
return true;
}
return false;
}
}