1 files changed, 111 insertions, 0 deletions
diff --git a/java/method.c b/java/method.c
new file mode 100644
index 0000000..35e6022
--- /dev/null
+++ b/java/method.c
@@ -0,0 +1,111 @@
+#include <string.h>
+
+#include "method.h"
+#include "config.h"
+#include "misc.h"
+
+static bool handle_method (jvmtiEnv *jvmti, JNIEnv* jni, jthread thread,
+                          jmethodID method, char **object, char **method_name,
+                          char **class_name)
+{
+   jvmtiError error;
+   char *class_sig = NULL, object_buf[SIZE_OBJECT_BUF];
+   jclass klass;
+   bool success = FALSE;
+   
+   *object = *method_name = *class_name = NULL;
+   
+   if ((error =
+        (*jvmti)->GetMethodName (jvmti, method, method_name, NULL, NULL))
+       != JVMTI_ERROR_NONE)
+      jvmti_error (jvmti, error, "GetMethodName");
+   else if ((error =
+             (*jvmti)->GetMethodDeclaringClass (jvmti, method, &klass))
+            != JVMTI_ERROR_NONE)
+      jvmti_error (jvmti, error, "GetMethodDeclaringClass");
+   else if ((error =
+             (*jvmti)->GetClassSignature (jvmti, klass, &class_sig, NULL))
+            != JVMTI_ERROR_NONE)
+      jvmti_error (jvmti, error, "GetClassSignature");
+   else {
+      if ((*class_name = get_class_name_from_sig (class_sig, TRUE)) &&
+          include_class (*class_name)) {
+         jint numlocals;
+         jvmtiLocalVariableEntry *locals;
+         if ((error = (*jvmti)->GetLocalVariableTable (jvmti, method,
+                                                       &numlocals, &locals))
+             != JVMTI_ERROR_NONE)
+            jvmti_error (jvmti, error, "GetLocalVariableTable");
+         else {
+            jint j, this_slot = -1;
+            for (j = 0; j < numlocals && this_slot == -1; j++)
+               if (strcmp (locals[j].name, "this") == 0)
+                  this_slot = locals[j].slot;
+
+            jobject this_obj;
+            
+            if (this_slot == -1) {
+               this_obj = NULL;
+               success = TRUE;
+            } else {
+               if ((error = (*jvmti)->GetLocalObject (jvmti, thread, 0,
+                                                      this_slot, &this_obj))
+                   != JVMTI_ERROR_NONE) {
+                  jvmti_error (jvmti, error, "GetLocalObject");
+               } else
+                  success = TRUE;
+            }
+
+            if (success) {
+               fill_object_buf (jni, object_buf, this_obj);
+               *object = strdup (object_buf);
+            }
+         }
+      }
+   }
+
+   jvmti_dealloc (jvmti, class_sig);
+
+   return success;
+}
+
+static void handle_method_free (jvmtiEnv *jvmti, char *object,
+                                char *method_name, char *class_name)
+{
+   simple_free (object);
+   jvmti_dealloc (jvmti, method_name);
+   simple_free (class_name);
+}
+
+void JNICALL method_entry (jvmtiEnv *jvmti, JNIEnv* jni, jthread thread,
+                           jmethodID method)
+{
+   char *object, *method_name, *class_name;
+
+   if (handle_method (jvmti, jni, thread, method, &object, &method_name,
+                      &class_name)) {
+      if (strcmp (method_name, "<init>") == 0)
+         RTFL_OBJ_PRINT ("create", "s:s", object, class_name);
+      else
+         RTFL_OBJ_PRINT ("enter", "s:s:d:s:",
+                         object, "", 0, method_name, class_name);
+   }
+
+   handle_method_free (jvmti, object, method_name, class_name);
+}
+
+void JNICALL method_exit (jvmtiEnv *jvmti, JNIEnv* jni, jthread thread,
+                          jmethodID method, jboolean was_popped_by_exception,
+                          jvalue return_value)
+{
+   char *object, *method_name, *class_name;
+
+   if (handle_method (jvmti, jni, thread, method, &object, &method_name,
+                      &class_name)) {
+      if (strcmp (method_name, "<init>") != 0)
+         // Hopefully, this is the correct method.
+         RTFL_OBJ_PRINT ("leave", "s", object);
+   }
+
+   handle_method_free (jvmti, object, method_name, class_name);
+}