_ Git - ldk-java/blob - src/main/java/org/ldk/structs/FutureCallback.java

   1 package org.ldk.structs;
   2
   3 import org.ldk.impl.bindings;
   4 import org.ldk.enums.*;
   5 import org.ldk.util.*;
   6 import java.util.Arrays;
   7 import java.lang.ref.Reference;
   8 import javax.annotation.Nullable;
   9
  10 /**
  11  * A callback which is called when a [`Future`] completes.
  12  *
  13  * Note that this MUST NOT call back into LDK directly, it must instead schedule actions to be
  14  * taken later. Rust users should use the [`std::future::Future`] implementation for [`Future`]
  15  * instead.
  16  *
  17  * Note that the [`std::future::Future`] implementation may only work for runtimes which schedule
  18  * futures when they receive a wake, rather than immediately executing them.
  19  */
  20 @SuppressWarnings("unchecked") // We correctly assign various generic arrays
  21 public class FutureCallback extends CommonBase {
  22         final bindings.LDKFutureCallback bindings_instance;
  23         FutureCallback(Object _dummy, long ptr) { super(ptr); bindings_instance = null; }
  24         private FutureCallback(bindings.LDKFutureCallback arg) {
  25                 super(bindings.LDKFutureCallback_new(arg));
  26                 this.ptrs_to.add(arg);
  27                 this.bindings_instance = arg;
  28         }
  29         @Override @SuppressWarnings("deprecation")
  30         protected void finalize() throws Throwable {
  31                 if (ptr != 0) { bindings.FutureCallback_free(ptr); } super.finalize();
  32         }
  33         /**
  34          * Destroys the object, freeing associated resources. After this call, any access
  35          * to this object may result in a SEGFAULT or worse.
  36          *
  37          * You should generally NEVER call this method. You should let the garbage collector
  38          * do this for you when it finalizes objects. However, it may be useful for types
  39          * which represent locks and should be closed immediately to avoid holding locks
  40          * until the GC runs.
  41          */
  42         public void destroy() {
  43                 if (ptr != 0) { bindings.FutureCallback_free(ptr); }
  44                 ptr = 0;
  45         }
  46         public static interface FutureCallbackInterface {
  47                 /**
  48                  * The method which is called.
  49                  */
  50                 void call();
  51         }
  52         private static class LDKFutureCallbackHolder { FutureCallback held; }
  53         public static FutureCallback new_impl(FutureCallbackInterface arg) {
  54                 final LDKFutureCallbackHolder impl_holder = new LDKFutureCallbackHolder();
  55                 impl_holder.held = new FutureCallback(new bindings.LDKFutureCallback() {
  56                         @Override public void call() {
  57                                 arg.call();
  58                                 Reference.reachabilityFence(arg);
  59                         }
  60                 });
  61                 return impl_holder.held;
  62         }
  63         /**
  64          * The method which is called.
  65          */
  66         public void call() {
  67                 bindings.FutureCallback_call(this.ptr);
  68                 Reference.reachabilityFence(this);
  69         }
  70
  71 }