We need the following function to be implemented in JVM TI to support debugger:
      jvmtiError EarlyReturnInt(jvmtiEnv* env, jthread thr, jvalue value);
Please, see the corresponding Debugger CR:
   6175634: Allow early return from methods

Short description:
  - Simulate a return from the topmost stack frame of thread's stack,
    returning 'value' if needed.
  - 'value' must be assignment compatible with the return type of the method
     for the topmost frame.
  - Locks acquired by the topmost frame are released.
  - Finally blocks are not executed.
  - The specified thread must be the current thread or must be suspended.
  - The current method must be non-native Java programming language methods
  - JVM TI events like MethodExit are generated as in usual return.
  - This function may only be called during the live phase.
  - The set of the return codes is the same as for PopFrame plus this one:
      JVMTI_ERROR_TYPE_MISMATCH - If the top-frame function return type is not
                                  an appropriate type for the function used.

  xxxxx@xxxxx   2005-04-11 20:12:33 GMT
  xxxxx@xxxxx   2005-04-26 07:01:51 GMT

N/A

Decided to add the following ForceEarlyReturn JVMTI functions:

jvmtiError ForceEarlyReturnObject(jvmtiEnv* env, jthread thread, jobject value);
jvmtiError ForceEarlyReturnInt(jvmtiEnv* env, jthread thread, jint value);
jvmtiError ForceEarlyReturnLong(jvmtiEnv* env, jthread thread, jlong value);
jvmtiError ForceEarlyReturnFloat(jvmtiEnv* env, jthread thread, jfloat value);
jvmtiError ForceEarlyReturnDouble(jvmtiEnv* env, jthread thread, jdouble value);
jvmtiError ForceEarlyReturnVoid(jvmtiEnv* env, jthread thread);

For details, please, see the description.


  xxxxx@xxxxx   2005-04-11 20:01:04 GMT