Examples with OptimizedAssumption org.graalvm.compiler.truffle.runtime.OptimizedAssumption used on opensource projects

Example 1 with OptimizedAssumption

use of org.graalvm.compiler.truffle.runtime.OptimizedAssumption in project graal by oracle.

the class AssumptionPartialEvaluationTest method testAssumptionDependencyManagement.

@Test
public void testAssumptionDependencyManagement() {
    OptimizedAssumption assumption = (OptimizedAssumption) Truffle.getRuntime().createAssumption();
    Assert.assertEquals(0, assumption.countDependencies());
    OptimizedAssumptionDependency failedCodeInstall = null;
    assumption.registerDependency().accept(failedCodeInstall);
    TestOptimizedAssumptionDependency[] deps = new TestOptimizedAssumptionDependency[100];
    for (int i = 0; i < deps.length; i++) {
        TestOptimizedAssumptionDependency dep = new TestOptimizedAssumptionDependency();
        assumption.registerDependency().accept(dep);
        deps[i] = dep;
    }
    Assert.assertEquals(deps.length, assumption.countDependencies());
    int invalidated = 0;
    for (int i = 0; i < deps.length; i++) {
        if (i % 2 == 0) {
            deps[i].invalidate();
            invalidated++;
        }
    }
    assumption.removeInvalidDependencies();
    Assert.assertEquals(invalidated, assumption.countDependencies());
    for (int i = 0; i < deps.length; i++) {
        deps[i].invalidate();
    }
    assumption.removeInvalidDependencies();
    Assert.assertEquals(0, assumption.countDependencies());
    WeakReference<TestOptimizedAssumptionDependency> dep = new WeakReference<>(new TestOptimizedAssumptionDependency());
    if (dep.get() != null) {
        Assert.assertTrue(dep.get().reachabilityDeterminesValidity());
        assumption.registerDependency().accept(dep.get());
        Assert.assertEquals(1, assumption.countDependencies());
        int attempts = 10;
        while (dep.get() != null && attempts-- > 0) {
            System.gc();
        }
        if (dep.get() == null) {
            assumption.removeInvalidDependencies();
            Assert.assertEquals(0, assumption.countDependencies());
        } else {
        // System.gc is not guaranteed to do anything
        // so we can end up here
        }
    }
}