[GR-41197] Update conditional in PosixSubstrateSigprofHandler.

PullRequest: graal/17379

Author: jovanstevanovic

substratevm/src/com.oracle.svm.core.posix/src/com/oracle/svm/core/posix/PosixSubstrateSigprofHandler.java

@@ -55,6 +55,7 @@
 import com.oracle.svm.core.option.SubstrateOptionsParser;
 import com.oracle.svm.core.posix.headers.Signal;
 import com.oracle.svm.core.posix.linux.LinuxSubstrateSigprofHandler;
+import com.oracle.svm.core.sampler.ProfilingSampler;
 import com.oracle.svm.core.sampler.SubstrateSigprofHandler;
 import com.oracle.svm.core.thread.ThreadListenerSupport;
 import com.oracle.svm.core.thread.ThreadListenerSupportFeature;
@@ -141,7 +142,7 @@ public List<Class<? extends Feature>> getRequiredFeatures() {
 
     @Override
     public void afterRegistration(AfterRegistrationAccess access) {
-        if (JfrExecutionSamplerSupported.isSupported() && isSignalHandlerBasedExecutionSamplerEnabled()) {
+        if (JfrExecutionSamplerSupported.isSupported() && isSignalHandlerBasedExecutionSamplerEnabled() && useAsyncSampler()) {
             SubstrateSigprofHandler sampler = makeNewSigprofHandler();
             ImageSingletons.add(JfrExecutionSampler.class, sampler);
             ImageSingletons.add(SubstrateSigprofHandler.class, sampler);
@@ -151,6 +152,10 @@ public void afterRegistration(AfterRegistrationAccess access) {
         }
     }
 
+    private static boolean useAsyncSampler() {
+        return !ImageSingletons.contains(ProfilingSampler.class) || ImageSingletons.lookup(ProfilingSampler.class).isAsyncSampler();
+    }
+
     private static SubstrateSigprofHandler makeNewSigprofHandler() {
         /*
          * For JFR, we should employ a global timer instead of a per-thread timer to adhere to the