jvmti.cc (_Jv_JVMTI_GetArgumentsSize): New function.

2007-02-21  Kyle Galloway  <kgallowa@redhat.com>

	* jvmti.cc (_Jv_JVMTI_GetArgumentsSize): New function.
	* testsuite/libjava.jvmti/interp/getargssize.java: New test.
	* testsuite/libjava.jvmti/interp/getargssize.h: Ditto.
	* testsuite/libjava.jvmti/interp/getargssize.jar: Ditto.
	* testsuite/libjava.jvmti/interp/getargssize.out: Ditto.
	* testsuite/libjava.jvmti/interp/natgetargssize.cc: Ditto.

From-SVN: r122201

libjava/testsuite/libjava.jvmti/interp/getargssize.h

@@ -0,0 +1,19 @@
+/* DO NOT EDIT THIS FILE - it is machine generated */
+
+#ifndef __getargssize__
+#define __getargssize__
+
+#include <jni.h>
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+JNIEXPORT jint JNICALL Java_getargssize_do_1getargssize_1tests (JNIEnv *env, jclass);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __getargssize__ */

libjava/testsuite/libjava.jvmti/interp/getargssize.java

@@ -0,0 +1,36 @@
+public class getargssize
+{
+  static
+    {
+      System.loadLibrary("natgetargssize");
+    }
+
+  public int aMethod (float fone, int ione)
+  {
+    return 0;
+  }
+  
+  public long bMethod (long lone, double done, int ione)
+  {
+    return 0;
+  }
+  
+  public static boolean cMethod ()
+  {
+    return false;
+  }
+  
+  public static Object dMethod (Object op)
+  {
+    return op;
+  }
+
+  public static native int do_getargssize_tests ();
+
+  public static void main (String[] args)
+  {
+    System.out.println ("JVMTI getargssize Interpreted Test");
+
+    do_getargssize_tests ();
+  }
+}

libjava/testsuite/libjava.jvmti/interp/getargssize.out

@@ -0,0 +1,5 @@
+JVMTI getargssize Interpreted Test
+Method 0 requires 3 slots for its arguments
+Method 1 requires 6 slots for its arguments
+Method 2 requires 0 slots for its arguments
+Method 3 requires 1 slots for its arguments

libjava/testsuite/libjava.jvmti/interp/natgetargssize.cc

@@ -0,0 +1,58 @@
+#include <jni.h>
+
+#include <jvmti.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "getargssize.h"
+
+JNIEXPORT jint JNICALL Java_getargssize_do_1getargssize_1tests
+(JNIEnv *env, jclass klass)
+{
+  JavaVM *vm;
+  jint err = env->GetJavaVM (&vm);
+  if (err < 0)
+    {
+      fprintf (stderr, "error getting VM\n");
+      exit (1);
+    }
+
+  jvmtiEnv *jvmti = NULL;
+  vm->GetEnv ((void **) &jvmti, JVMTI_VERSION_1_0);
+
+  if (jvmti == NULL)
+    {
+      fprintf (stderr, "error getting jvmti environment\n");
+      exit (1);
+    }
+  
+  jint args_size;
+
+  jvmtiError jerr;
+  
+  jmethodID meth_ids[4];
+  
+  meth_ids[0] = env->GetMethodID (klass, "aMethod", "(FI)I");
+  meth_ids[1] = env->GetMethodID (klass, "bMethod", "(JDI)J");
+  meth_ids[2] = env->GetStaticMethodID (klass, "cMethod", "()Z");
+  meth_ids[3] = env->GetStaticMethodID (klass, "dMethod", 
+                                     "(Ljava/lang/Object;)Ljava/lang/Object;");
+  for (int i = 0; i < 4; i++)
+    {
+      jerr = jvmti->GetArgumentsSize (meth_ids[i], &args_size);
+      if (jerr != JVMTI_ERROR_NONE)
+        {
+          char *error_name;
+          jvmti->GetErrorName (jerr, &error_name);
+          fprintf (stderr, "JVMTI Error: %s\n", error_name);
+          jvmti->Deallocate (reinterpret_cast<unsigned char *> (error_name));
+        }
+      else
+        {
+          printf ("Method %d requires %d slots for its arguments\n", i,
+                  args_size);
+        }
+    }
+    
+    return 0;
+}