Examples with SubstrateForeignCallTarget com.oracle.svm.core.snippets.SubstrateForeignCallTarget used on opensource projects

Example 11 with SubstrateForeignCallTarget

use of com.oracle.svm.core.snippets.SubstrateForeignCallTarget in project graal by oracle.

the class DeoptTester method deoptTest.

/**
 * Scans the stack frames and if there are some new (= so far not seen) PCs inside deoptimizable
 * methods, a deopt is done.
 *
 * Foreign call: {@link SnippetRuntime#DEOPTTEST}.
 */
@NeverInline("deoptTest must have a separate stack frame")
@SubstrateForeignCallTarget
public static void deoptTest() {
    if (inDeoptTest > 0) {
        return;
    }
    inDeoptTest++;
    try {
        if (Heap.getHeap().isAllocationDisallowed()) {
            return;
        }
        if (VMOperationControl.TestingBackdoor.isLocked()) {
            return;
        }
        if (VMOperation.isInProgress()) {
            return;
        }
        Pointer startSp = KnownIntrinsics.readCallerStackPointer();
        CodePointer startIp = KnownIntrinsics.readReturnAddress();
        int numHandledPCs = handledPCs.size();
        JavaStackWalker.walkCurrentThread(startSp, startIp, collectPcVisitor);
        if (handledPCs.size() > numHandledPCs) {
            Deoptimizer.deoptimizeAll();
        }
    } finally {
        inDeoptTest--;
    }
}