// jvm.h - Header file for private implementation information. -*- c++ -*-
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// jvm.h - Header file for private implementation information. -*- c++ -*-
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/* Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 Free Software Foundation
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/* Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 Free Software Foundation
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This file is part of libgcj.
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This file is part of libgcj.
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This software is copyrighted work licensed under the terms of the
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This software is copyrighted work licensed under the terms of the
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Libgcj License. Please consult the file "LIBGCJ_LICENSE" for
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Libgcj License. Please consult the file "LIBGCJ_LICENSE" for
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details. */
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details. */
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#ifndef __JAVA_JVM_H__
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#ifndef __JAVA_JVM_H__
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#define __JAVA_JVM_H__
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#define __JAVA_JVM_H__
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// Define this before including jni.h.
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// Define this before including jni.h.
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// jni.h is included by jvmpi.h, which might be included. We define
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// jni.h is included by jvmpi.h, which might be included. We define
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// this unconditionally because it is convenient and it lets other
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// this unconditionally because it is convenient and it lets other
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// files include jni.h without difficulty.
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// files include jni.h without difficulty.
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#define __GCJ_JNI_IMPL__
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#define __GCJ_JNI_IMPL__
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#include <gcj/javaprims.h>
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#include <gcj/javaprims.h>
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#include <java-assert.h>
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#include <java-assert.h>
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#include <java-threads.h>
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#include <java-threads.h>
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// Must include java-gc.h before Object.h for the implementation.
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// Must include java-gc.h before Object.h for the implementation.
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#include <java-gc.h>
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#include <java-gc.h>
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#include <java/lang/Object.h>
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#include <java/lang/Object.h>
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// Include cni.h before field.h to enable all definitions. FIXME.
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// Include cni.h before field.h to enable all definitions. FIXME.
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#include <gcj/cni.h>
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#include <gcj/cni.h>
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#include <gcj/field.h>
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#include <gcj/field.h>
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#include <java/lang/Thread.h>
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#include <java/lang/Thread.h>
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#include <sysdep/locks.h>
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#include <sysdep/locks.h>
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/* Macro for possible unused arguments. */
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/* Macro for possible unused arguments. */
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#define MAYBE_UNUSED __attribute__((__unused__))
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#define MAYBE_UNUSED __attribute__((__unused__))
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/* Structure of the virtual table. */
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/* Structure of the virtual table. */
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struct _Jv_VTable
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struct _Jv_VTable
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{
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{
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#ifdef __ia64__
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#ifdef __ia64__
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typedef struct { void *pc, *gp; } vtable_elt;
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typedef struct { void *pc, *gp; } vtable_elt;
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#else
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#else
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typedef void *vtable_elt;
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typedef void *vtable_elt;
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#endif
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#endif
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jclass clas;
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jclass clas;
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void *gc_descr;
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void *gc_descr;
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// This must be last, as derived classes "extend" this by
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// This must be last, as derived classes "extend" this by
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// adding new data members.
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// adding new data members.
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vtable_elt method[1];
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vtable_elt method[1];
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#ifdef __ia64__
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#ifdef __ia64__
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void *get_method(int i) { return &method[i]; }
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void *get_method(int i) { return &method[i]; }
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void set_method(int i, void *fptr) { method[i] = *(vtable_elt *)fptr; }
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void set_method(int i, void *fptr) { method[i] = *(vtable_elt *)fptr; }
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void *get_finalizer()
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void *get_finalizer()
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{
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{
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// We know that get_finalizer is only used for checking whether
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// We know that get_finalizer is only used for checking whether
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// this object needs to have a finalizer registered. So it is
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// this object needs to have a finalizer registered. So it is
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// safe to simply return just the PC component of the vtable
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// safe to simply return just the PC component of the vtable
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// slot.
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// slot.
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return ((vtable_elt *)(get_method(0)))->pc;
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return ((vtable_elt *)(get_method(0)))->pc;
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}
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}
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#else
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#else
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void *get_method(int i) { return method[i]; }
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void *get_method(int i) { return method[i]; }
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void set_method(int i, void *fptr) { method[i] = fptr; }
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void set_method(int i, void *fptr) { method[i] = fptr; }
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void *get_finalizer() { return get_method(0); }
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void *get_finalizer() { return get_method(0); }
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#endif
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#endif
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static size_t vtable_elt_size() { return sizeof(vtable_elt); }
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static size_t vtable_elt_size() { return sizeof(vtable_elt); }
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// Given a method index, return byte offset from the vtable pointer.
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// Given a method index, return byte offset from the vtable pointer.
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static jint idx_to_offset (int index)
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static jint idx_to_offset (int index)
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{
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{
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return (2 * sizeof (void *)) + (index * vtable_elt_size ());
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return (2 * sizeof (void *)) + (index * vtable_elt_size ());
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}
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}
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static _Jv_VTable *new_vtable (int count);
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static _Jv_VTable *new_vtable (int count);
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};
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};
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union _Jv_word
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union _Jv_word
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{
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{
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jobject o;
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jobject o;
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jint i; // Also stores smaller integral types.
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jint i; // Also stores smaller integral types.
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jfloat f;
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jfloat f;
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jint ia[1]; // Half of _Jv_word2.
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jint ia[1]; // Half of _Jv_word2.
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void* p;
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void* p;
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#if SIZEOF_VOID_P == 8
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#if SIZEOF_VOID_P == 8
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// We can safely put a long or a double in here without increasing
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// We can safely put a long or a double in here without increasing
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// the size of _Jv_Word; we take advantage of this in the interpreter.
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// the size of _Jv_Word; we take advantage of this in the interpreter.
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jlong l;
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jlong l;
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jdouble d;
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jdouble d;
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#endif
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#endif
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jclass clazz;
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jclass clazz;
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jstring string;
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jstring string;
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struct _Jv_Field *field;
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struct _Jv_Field *field;
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struct _Jv_Utf8Const *utf8;
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struct _Jv_Utf8Const *utf8;
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struct _Jv_ResolvedMethod *rmethod;
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struct _Jv_ResolvedMethod *rmethod;
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};
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};
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union _Jv_word2
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union _Jv_word2
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{
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{
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jint ia[2];
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jint ia[2];
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jlong l;
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jlong l;
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jdouble d;
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jdouble d;
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};
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};
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union _Jv_value
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union _Jv_value
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{
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{
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jbyte byte_value;
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jbyte byte_value;
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jshort short_value;
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jshort short_value;
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jchar char_value;
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jchar char_value;
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jint int_value;
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jint int_value;
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jlong long_value;
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jlong long_value;
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jfloat float_value;
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jfloat float_value;
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jdouble double_value;
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jdouble double_value;
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jobject object_value;
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jobject object_value;
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};
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};
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/* Extract a character from a Java-style Utf8 string.
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/* Extract a character from a Java-style Utf8 string.
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* PTR points to the current character.
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* PTR points to the current character.
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* LIMIT points to the end of the Utf8 string.
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* LIMIT points to the end of the Utf8 string.
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* PTR is incremented to point after the character thta gets returns.
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* PTR is incremented to point after the character thta gets returns.
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* On an error, -1 is returned. */
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* On an error, -1 is returned. */
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#define UTF8_GET(PTR, LIMIT) \
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#define UTF8_GET(PTR, LIMIT) \
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((PTR) >= (LIMIT) ? -1 \
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((PTR) >= (LIMIT) ? -1 \
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: *(PTR) < 128 ? *(PTR)++ \
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: *(PTR) < 128 ? *(PTR)++ \
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: (*(PTR)&0xE0) == 0xC0 && ((PTR)+=2)<=(LIMIT) && ((PTR)[-1]&0xC0) == 0x80 \
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: (*(PTR)&0xE0) == 0xC0 && ((PTR)+=2)<=(LIMIT) && ((PTR)[-1]&0xC0) == 0x80 \
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? (((PTR)[-2] & 0x1F) << 6) + ((PTR)[-1] & 0x3F) \
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? (((PTR)[-2] & 0x1F) << 6) + ((PTR)[-1] & 0x3F) \
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: (*(PTR) & 0xF0) == 0xE0 && ((PTR) += 3) <= (LIMIT) \
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: (*(PTR) & 0xF0) == 0xE0 && ((PTR) += 3) <= (LIMIT) \
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&& ((PTR)[-2] & 0xC0) == 0x80 && ((PTR)[-1] & 0xC0) == 0x80 \
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&& ((PTR)[-2] & 0xC0) == 0x80 && ((PTR)[-1] & 0xC0) == 0x80 \
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? (((PTR)[-3]&0x0F) << 12) + (((PTR)[-2]&0x3F) << 6) + ((PTR)[-1]&0x3F) \
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? (((PTR)[-3]&0x0F) << 12) + (((PTR)[-2]&0x3F) << 6) + ((PTR)[-1]&0x3F) \
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: ((PTR)++, -1))
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: ((PTR)++, -1))
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extern int _Jv_strLengthUtf8(const char* str, int len);
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extern int _Jv_strLengthUtf8(const char* str, int len);
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typedef struct _Jv_Utf8Const Utf8Const;
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typedef struct _Jv_Utf8Const Utf8Const;
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_Jv_Utf8Const *_Jv_makeUtf8Const (const char *s, int len);
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_Jv_Utf8Const *_Jv_makeUtf8Const (const char *s, int len);
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_Jv_Utf8Const *_Jv_makeUtf8Const (jstring string);
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_Jv_Utf8Const *_Jv_makeUtf8Const (jstring string);
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static inline _Jv_Utf8Const *_Jv_makeUtf8Const (const char *s)
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static inline _Jv_Utf8Const *_Jv_makeUtf8Const (const char *s)
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{
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{
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return _Jv_makeUtf8Const (s, strlen (s));
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return _Jv_makeUtf8Const (s, strlen (s));
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}
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}
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extern jboolean _Jv_equalUtf8Consts (const _Jv_Utf8Const *, const _Jv_Utf8Const *);
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extern jboolean _Jv_equalUtf8Consts (const _Jv_Utf8Const *, const _Jv_Utf8Const *);
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extern jboolean _Jv_equal (_Jv_Utf8Const *, jstring, jint);
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extern jboolean _Jv_equal (_Jv_Utf8Const *, jstring, jint);
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extern jboolean _Jv_equaln (_Jv_Utf8Const *, jstring, jint);
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extern jboolean _Jv_equaln (_Jv_Utf8Const *, jstring, jint);
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/* Helper class which converts a jstring to a temporary char*.
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/* Helper class which converts a jstring to a temporary char*.
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Uses the supplied buffer, if non-null. Otherwise, allocates
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Uses the supplied buffer, if non-null. Otherwise, allocates
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the buffer on the heap. Use the JV_TEMP_UTF_STRING macro,
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the buffer on the heap. Use the JV_TEMP_UTF_STRING macro,
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which follows, to automatically allocate a stack buffer if
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which follows, to automatically allocate a stack buffer if
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the string is small enough. */
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the string is small enough. */
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class _Jv_TempUTFString
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class _Jv_TempUTFString
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{
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{
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public:
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public:
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_Jv_TempUTFString(jstring jstr, char* buf=0);
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_Jv_TempUTFString(jstring jstr, char* buf=0);
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~_Jv_TempUTFString();
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~_Jv_TempUTFString();
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// Accessors
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// Accessors
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operator const char*() const
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operator const char*() const
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{
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{
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return buf_;
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return buf_;
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}
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}
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const char* buf() const
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const char* buf() const
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{
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{
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return buf_;
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return buf_;
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}
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}
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char* buf()
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char* buf()
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{
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{
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return buf_;
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return buf_;
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}
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}
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private:
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private:
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char* buf_;
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char* buf_;
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bool heapAllocated_;
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bool heapAllocated_;
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};
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};
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inline _Jv_TempUTFString::_Jv_TempUTFString (jstring jstr, char* buf)
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inline _Jv_TempUTFString::_Jv_TempUTFString (jstring jstr, char* buf)
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: buf_(0), heapAllocated_(false)
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: buf_(0), heapAllocated_(false)
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{
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{
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if (!jstr) return;
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if (!jstr) return;
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jsize len = JvGetStringUTFLength (jstr);
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jsize len = JvGetStringUTFLength (jstr);
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if (buf)
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if (buf)
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buf_ = buf;
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buf_ = buf;
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else
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else
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{
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{
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buf_ = (char*) _Jv_Malloc (len+1);
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buf_ = (char*) _Jv_Malloc (len+1);
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heapAllocated_ = true;
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heapAllocated_ = true;
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}
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}
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JvGetStringUTFRegion (jstr, 0, jstr->length(), buf_);
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JvGetStringUTFRegion (jstr, 0, jstr->length(), buf_);
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buf_[len] = '\0';
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buf_[len] = '\0';
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}
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}
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inline _Jv_TempUTFString::~_Jv_TempUTFString ()
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inline _Jv_TempUTFString::~_Jv_TempUTFString ()
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{
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{
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if (heapAllocated_)
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if (heapAllocated_)
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_Jv_Free (buf_);
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_Jv_Free (buf_);
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}
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}
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/* Macro which uses _Jv_TempUTFString. Allocates a stack-based
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/* Macro which uses _Jv_TempUTFString. Allocates a stack-based
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buffer if the string and its null terminator are <= 256
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buffer if the string and its null terminator are <= 256
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characters in length. Otherwise, a heap-based buffer is
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characters in length. Otherwise, a heap-based buffer is
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used. The parameters to this macro are the variable name
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used. The parameters to this macro are the variable name
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which is an instance of _Jv_TempUTFString (above) and a
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which is an instance of _Jv_TempUTFString (above) and a
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jstring.
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jstring.
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Sample Usage:
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Sample Usage:
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jstring jstr = getAJString();
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jstring jstr = getAJString();
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JV_TEMP_UTF_STRING(utfstr, jstr);
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JV_TEMP_UTF_STRING(utfstr, jstr);
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printf("The string is: %s\n", utfstr.buf());
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printf("The string is: %s\n", utfstr.buf());
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*/
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*/
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#define JV_TEMP_UTF_STRING(utfstr, jstr) \
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#define JV_TEMP_UTF_STRING(utfstr, jstr) \
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jstring utfstr##thejstr = (jstr); \
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jstring utfstr##thejstr = (jstr); \
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jsize utfstr##_len = utfstr##thejstr ? JvGetStringUTFLength (utfstr##thejstr) + 1 : 0; \
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jsize utfstr##_len = utfstr##thejstr ? JvGetStringUTFLength (utfstr##thejstr) + 1 : 0; \
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char utfstr##_buf[utfstr##_len <= 256 ? utfstr##_len : 0]; \
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char utfstr##_buf[utfstr##_len <= 256 ? utfstr##_len : 0]; \
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_Jv_TempUTFString utfstr(utfstr##thejstr, sizeof(utfstr##_buf)==0 ? 0 : utfstr##_buf)
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_Jv_TempUTFString utfstr(utfstr##thejstr, sizeof(utfstr##_buf)==0 ? 0 : utfstr##_buf)
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namespace gcj
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namespace gcj
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{
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{
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/* Some constants used during lookup of special class methods. */
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/* Some constants used during lookup of special class methods. */
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extern _Jv_Utf8Const *void_signature; /* "()V" */
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extern _Jv_Utf8Const *void_signature; /* "()V" */
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extern _Jv_Utf8Const *clinit_name; /* "<clinit>" */
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extern _Jv_Utf8Const *clinit_name; /* "<clinit>" */
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extern _Jv_Utf8Const *init_name; /* "<init>" */
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extern _Jv_Utf8Const *init_name; /* "<init>" */
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extern _Jv_Utf8Const *finit_name; /* "finit$", */
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extern _Jv_Utf8Const *finit_name; /* "finit$", */
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/* Set to true by _Jv_CreateJavaVM. */
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/* Set to true by _Jv_CreateJavaVM. */
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extern bool runtimeInitialized;
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extern bool runtimeInitialized;
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/* Print out class names as they are initialized. */
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/* Print out class names as they are initialized. */
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extern bool verbose_class_flag;
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extern bool verbose_class_flag;
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/* When true, enable the bytecode verifier and BC-ABI verification. */
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/* When true, enable the bytecode verifier and BC-ABI verification. */
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extern bool verifyClasses;
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extern bool verifyClasses;
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/* Thread stack size specified by the -Xss runtime argument. */
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/* Thread stack size specified by the -Xss runtime argument. */
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extern size_t stack_size;
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extern size_t stack_size;
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/* The start time */
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/* The start time */
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extern jlong startTime;
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extern jlong startTime;
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/* The VM arguments */
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/* The VM arguments */
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extern JArray<jstring>* vmArgs;
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extern JArray<jstring>* vmArgs;
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// Currently loaded classes
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// Currently loaded classes
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extern jint loadedClasses;
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extern jint loadedClasses;
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// Unloaded classes
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// Unloaded classes
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extern jlong unloadedClasses;
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extern jlong unloadedClasses;
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}
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}
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// This class handles all aspects of class preparation and linking.
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// This class handles all aspects of class preparation and linking.
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class _Jv_Linker
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class _Jv_Linker
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{
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{
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private:
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private:
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typedef unsigned int uaddr __attribute__ ((mode (pointer)));
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typedef unsigned int uaddr __attribute__ ((mode (pointer)));
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static _Jv_Field *find_field_helper(jclass, _Jv_Utf8Const *, _Jv_Utf8Const *,
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static _Jv_Field *find_field_helper(jclass, _Jv_Utf8Const *, _Jv_Utf8Const *,
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jclass, jclass *);
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jclass, jclass *);
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static _Jv_Field *find_field(jclass, jclass, jclass *, _Jv_Utf8Const *,
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static _Jv_Field *find_field(jclass, jclass, jclass *, _Jv_Utf8Const *,
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_Jv_Utf8Const *);
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_Jv_Utf8Const *);
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static void check_loading_constraints (_Jv_Method *, jclass, jclass);
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static void check_loading_constraints (_Jv_Method *, jclass, jclass);
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static void prepare_constant_time_tables(jclass);
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static void prepare_constant_time_tables(jclass);
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static jshort get_interfaces(jclass, _Jv_ifaces *);
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static jshort get_interfaces(jclass, _Jv_ifaces *);
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static void link_symbol_table(jclass);
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static void link_symbol_table(jclass);
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static void link_exception_table(jclass);
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static void link_exception_table(jclass);
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static void layout_interface_methods(jclass);
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static void layout_interface_methods(jclass);
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static void set_vtable_entries(jclass, _Jv_VTable *);
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static void set_vtable_entries(jclass, _Jv_VTable *);
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static void make_vtable(jclass);
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static void make_vtable(jclass);
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static void ensure_fields_laid_out(jclass);
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static void ensure_fields_laid_out(jclass);
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static void ensure_class_linked(jclass);
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static void ensure_class_linked(jclass);
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static void ensure_supers_installed(jclass);
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static void ensure_supers_installed(jclass);
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static void add_miranda_methods(jclass, jclass);
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static void add_miranda_methods(jclass, jclass);
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static void ensure_method_table_complete(jclass);
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static void ensure_method_table_complete(jclass);
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static void verify_class(jclass);
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static void verify_class(jclass);
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static jshort find_iindex(jclass *, jshort *, jshort);
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static jshort find_iindex(jclass *, jshort *, jshort);
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static jshort indexof(void *, void **, jshort);
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static jshort indexof(void *, void **, jshort);
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static int get_alignment_from_class(jclass);
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static int get_alignment_from_class(jclass);
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static void generate_itable(jclass, _Jv_ifaces *, jshort *);
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static void generate_itable(jclass, _Jv_ifaces *, jshort *);
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static jshort append_partial_itable(jclass, jclass, void **, jshort);
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static jshort append_partial_itable(jclass, jclass, void **, jshort);
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static _Jv_Method *search_method_in_superclasses (jclass cls, jclass klass,
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static _Jv_Method *search_method_in_superclasses (jclass cls, jclass klass,
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_Jv_Utf8Const *method_name,
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_Jv_Utf8Const *method_name,
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_Jv_Utf8Const *method_signature,
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_Jv_Utf8Const *method_signature,
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jclass *found_class,
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jclass *found_class,
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bool check_perms = true);
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bool check_perms = true);
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static void *create_error_method(_Jv_Utf8Const *, jclass);
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static void *create_error_method(_Jv_Utf8Const *, jclass);
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|
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/* The least significant bit of the signature pointer in a symbol
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/* The least significant bit of the signature pointer in a symbol
|
table is set to 1 by the compiler if the reference is "special",
|
table is set to 1 by the compiler if the reference is "special",
|
i.e. if it is an access to a private field or method. Extract
|
i.e. if it is an access to a private field or method. Extract
|
that bit, clearing it in the address and setting the LSB of
|
that bit, clearing it in the address and setting the LSB of
|
SPECIAL accordingly. */
|
SPECIAL accordingly. */
|
static void maybe_adjust_signature (_Jv_Utf8Const *&s, uaddr &special)
|
static void maybe_adjust_signature (_Jv_Utf8Const *&s, uaddr &special)
|
{
|
{
|
union {
|
union {
|
_Jv_Utf8Const *signature;
|
_Jv_Utf8Const *signature;
|
uaddr signature_bits;
|
uaddr signature_bits;
|
};
|
};
|
signature = s;
|
signature = s;
|
special = signature_bits & 1;
|
special = signature_bits & 1;
|
signature_bits -= special;
|
signature_bits -= special;
|
s = signature;
|
s = signature;
|
}
|
}
|
|
|
static _Jv_Mutex_t resolve_mutex;
|
static _Jv_Mutex_t resolve_mutex;
|
static void init (void) __attribute__((constructor));
|
static void init (void) __attribute__((constructor));
|
|
|
public:
|
public:
|
|
|
static bool has_field_p (jclass, _Jv_Utf8Const *);
|
static bool has_field_p (jclass, _Jv_Utf8Const *);
|
static void print_class_loaded (jclass);
|
static void print_class_loaded (jclass);
|
static void resolve_class_ref (jclass, jclass *);
|
static void resolve_class_ref (jclass, jclass *);
|
static void wait_for_state(jclass, int);
|
static void wait_for_state(jclass, int);
|
static _Jv_Method *resolve_method_entry (jclass, jclass &,
|
static _Jv_Method *resolve_method_entry (jclass, jclass &,
|
int, int,
|
int, int,
|
bool, bool);
|
bool, bool);
|
static _Jv_word resolve_pool_entry (jclass, int, bool =false);
|
static _Jv_word resolve_pool_entry (jclass, int, bool =false);
|
static void resolve_field (_Jv_Field *, java::lang::ClassLoader *);
|
static void resolve_field (_Jv_Field *, java::lang::ClassLoader *);
|
static void verify_type_assertions (jclass);
|
static void verify_type_assertions (jclass);
|
static _Jv_Method *search_method_in_class (jclass, jclass,
|
static _Jv_Method *search_method_in_class (jclass, jclass,
|
_Jv_Utf8Const *,
|
_Jv_Utf8Const *,
|
_Jv_Utf8Const *,
|
_Jv_Utf8Const *,
|
bool check_perms = true);
|
bool check_perms = true);
|
static void layout_vtable_methods(jclass);
|
static void layout_vtable_methods(jclass);
|
|
|
static jbyte read_cpool_entry (_Jv_word *data,
|
static jbyte read_cpool_entry (_Jv_word *data,
|
const _Jv_Constants *const pool,
|
const _Jv_Constants *const pool,
|
int index)
|
int index)
|
{
|
{
|
_Jv_MutexLock (&resolve_mutex);
|
_Jv_MutexLock (&resolve_mutex);
|
jbyte tags = pool->tags[index];
|
jbyte tags = pool->tags[index];
|
*data = pool->data[index];
|
*data = pool->data[index];
|
_Jv_MutexUnlock (&resolve_mutex);
|
_Jv_MutexUnlock (&resolve_mutex);
|
return tags;
|
return tags;
|
}
|
}
|
|
|
static void write_cpool_entry (_Jv_word data, jbyte tags,
|
static void write_cpool_entry (_Jv_word data, jbyte tags,
|
_Jv_Constants *pool,
|
_Jv_Constants *pool,
|
int index)
|
int index)
|
{
|
{
|
_Jv_MutexLock (&resolve_mutex);
|
_Jv_MutexLock (&resolve_mutex);
|
pool->data[index] = data;
|
pool->data[index] = data;
|
pool->tags[index] = tags;
|
pool->tags[index] = tags;
|
_Jv_MutexUnlock (&resolve_mutex);
|
_Jv_MutexUnlock (&resolve_mutex);
|
}
|
}
|
};
|
};
|
|
|
/* Type of pointer used as finalizer. */
|
/* Type of pointer used as finalizer. */
|
typedef void _Jv_FinalizerFunc (jobject);
|
typedef void _Jv_FinalizerFunc (jobject);
|
|
|
/* Allocate space for a new Java object. */
|
/* Allocate space for a new Java object. */
|
void *_Jv_AllocObj (jsize size, jclass cl) __attribute__((__malloc__));
|
void *_Jv_AllocObj (jsize size, jclass cl) __attribute__((__malloc__));
|
/* Allocate space for a potentially uninitialized pointer-free object.
|
/* Allocate space for a potentially uninitialized pointer-free object.
|
Interesting only with JV_HASH_SYNCHRONIZATION. */
|
Interesting only with JV_HASH_SYNCHRONIZATION. */
|
void *_Jv_AllocPtrFreeObj (jsize size, jclass cl) __attribute__((__malloc__));
|
void *_Jv_AllocPtrFreeObj (jsize size, jclass cl) __attribute__((__malloc__));
|
/* Allocate space for an array of Java objects. */
|
/* Allocate space for an array of Java objects. */
|
void *_Jv_AllocArray (jsize size, jclass cl) __attribute__((__malloc__));
|
void *_Jv_AllocArray (jsize size, jclass cl) __attribute__((__malloc__));
|
/* Allocate space that is known to be pointer-free. */
|
/* Allocate space that is known to be pointer-free. */
|
void *_Jv_AllocBytes (jsize size) __attribute__((__malloc__));
|
void *_Jv_AllocBytes (jsize size) __attribute__((__malloc__));
|
/* Allocate space for a new non-Java object, which does not have the usual
|
/* Allocate space for a new non-Java object, which does not have the usual
|
Java object header but may contain pointers to other GC'ed objects. */
|
Java object header but may contain pointers to other GC'ed objects. */
|
void *_Jv_AllocRawObj (jsize size) __attribute__((__malloc__));
|
void *_Jv_AllocRawObj (jsize size) __attribute__((__malloc__));
|
/* Allocate a double-indirect pointer to a _Jv_ClosureList such that
|
/* Allocate a double-indirect pointer to a _Jv_ClosureList such that
|
the _Jv_ClosureList gets automatically finalized when it is no
|
the _Jv_ClosureList gets automatically finalized when it is no
|
longer reachable, not even by other finalizable objects. */
|
longer reachable, not even by other finalizable objects. */
|
_Jv_ClosureList **_Jv_ClosureListFinalizer (void) __attribute__((__malloc__));
|
_Jv_ClosureList **_Jv_ClosureListFinalizer (void) __attribute__((__malloc__));
|
/* Explicitly throw an out-of-memory exception. */
|
/* Explicitly throw an out-of-memory exception. */
|
void _Jv_ThrowNoMemory() __attribute__((__noreturn__));
|
void _Jv_ThrowNoMemory() __attribute__((__noreturn__));
|
/* Allocate an object with a single pointer. The first word is reserved
|
/* Allocate an object with a single pointer. The first word is reserved
|
for the GC, and the second word is the traced pointer. */
|
for the GC, and the second word is the traced pointer. */
|
void *_Jv_AllocTraceOne (jsize size /* incl. reserved slot */);
|
void *_Jv_AllocTraceOne (jsize size /* incl. reserved slot */);
|
/* Ditto, but for two traced pointers. */
|
/* Ditto, but for two traced pointers. */
|
void *_Jv_AllocTraceTwo (jsize size /* incl. reserved slot */);
|
void *_Jv_AllocTraceTwo (jsize size /* incl. reserved slot */);
|
/* Initialize the GC. */
|
/* Initialize the GC. */
|
void _Jv_InitGC (void);
|
void _Jv_InitGC (void);
|
/* Register a finalizer. */
|
/* Register a finalizer. */
|
void _Jv_RegisterFinalizer (void *object, _Jv_FinalizerFunc *method);
|
void _Jv_RegisterFinalizer (void *object, _Jv_FinalizerFunc *method);
|
/* Compute the GC descriptor for a class */
|
/* Compute the GC descriptor for a class */
|
void * _Jv_BuildGCDescr(jclass);
|
void * _Jv_BuildGCDescr(jclass);
|
|
|
/* Allocate some unscanned, unmoveable memory. Return NULL if out of
|
/* Allocate some unscanned, unmoveable memory. Return NULL if out of
|
memory. */
|
memory. */
|
void *_Jv_MallocUnchecked (jsize size) __attribute__((__malloc__));
|
void *_Jv_MallocUnchecked (jsize size) __attribute__((__malloc__));
|
|
|
/* Initialize finalizers. The argument is a function to be called
|
/* Initialize finalizers. The argument is a function to be called
|
when a finalizer is ready to be run. */
|
when a finalizer is ready to be run. */
|
void _Jv_GCInitializeFinalizers (void (*notifier) (void));
|
void _Jv_GCInitializeFinalizers (void (*notifier) (void));
|
/* Run finalizers for objects ready to be finalized.. */
|
/* Run finalizers for objects ready to be finalized.. */
|
void _Jv_RunFinalizers (void);
|
void _Jv_RunFinalizers (void);
|
/* Run all finalizers. Should be called only before exit. */
|
/* Run all finalizers. Should be called only before exit. */
|
void _Jv_RunAllFinalizers (void);
|
void _Jv_RunAllFinalizers (void);
|
/* Perform a GC. */
|
/* Perform a GC. */
|
void _Jv_RunGC (void);
|
void _Jv_RunGC (void);
|
/* Disable and enable GC. */
|
/* Disable and enable GC. */
|
void _Jv_DisableGC (void);
|
void _Jv_DisableGC (void);
|
void _Jv_EnableGC (void);
|
void _Jv_EnableGC (void);
|
/* Register a disappearing link. This is a field F which should be
|
/* Register a disappearing link. This is a field F which should be
|
cleared when *F is found to be inaccessible. This is used in the
|
cleared when *F is found to be inaccessible. This is used in the
|
implementation of java.lang.ref.Reference. */
|
implementation of java.lang.ref.Reference. */
|
void _Jv_GCRegisterDisappearingLink (jobject *objp);
|
void _Jv_GCRegisterDisappearingLink (jobject *objp);
|
/* Return true if OBJECT should be reclaimed. This is used to
|
/* Return true if OBJECT should be reclaimed. This is used to
|
implement soft references. */
|
implement soft references. */
|
jboolean _Jv_GCCanReclaimSoftReference (jobject obj);
|
jboolean _Jv_GCCanReclaimSoftReference (jobject obj);
|
|
|
/* Register a finalizer for a String object. This is only used by
|
/* Register a finalizer for a String object. This is only used by
|
the intern() implementation. */
|
the intern() implementation. */
|
void _Jv_RegisterStringFinalizer (jobject str);
|
void _Jv_RegisterStringFinalizer (jobject str);
|
/* This is called to actually finalize a possibly-intern()d String. */
|
/* This is called to actually finalize a possibly-intern()d String. */
|
void _Jv_FinalizeString (jobject str);
|
void _Jv_FinalizeString (jobject str);
|
|
|
/* Return approximation of total size of heap. */
|
/* Return approximation of total size of heap. */
|
long _Jv_GCTotalMemory (void);
|
long _Jv_GCTotalMemory (void);
|
/* Return approximation of total free memory. */
|
/* Return approximation of total free memory. */
|
long _Jv_GCFreeMemory (void);
|
long _Jv_GCFreeMemory (void);
|
|
|
/* Set initial heap size. If SIZE==0, ignore. Should be run before
|
/* Set initial heap size. If SIZE==0, ignore. Should be run before
|
_Jv_InitGC. Not required to have any actual effect. */
|
_Jv_InitGC. Not required to have any actual effect. */
|
void _Jv_GCSetInitialHeapSize (size_t size);
|
void _Jv_GCSetInitialHeapSize (size_t size);
|
|
|
/* Set maximum heap size. If SIZE==0, unbounded. Should be run
|
/* Set maximum heap size. If SIZE==0, unbounded. Should be run
|
before _Jv_InitGC. Not required to have any actual effect. */
|
before _Jv_InitGC. Not required to have any actual effect. */
|
void _Jv_GCSetMaximumHeapSize (size_t size);
|
void _Jv_GCSetMaximumHeapSize (size_t size);
|
|
|
/* External interface to setting the heap size. Parses ARG (a number
|
/* External interface to setting the heap size. Parses ARG (a number
|
which can optionally have "k" or "m" appended and calls
|
which can optionally have "k" or "m" appended and calls
|
_Jv_GCSetInitialHeapSize. */
|
_Jv_GCSetInitialHeapSize. */
|
void _Jv_SetInitialHeapSize (const char *arg);
|
void _Jv_SetInitialHeapSize (const char *arg);
|
|
|
/* External interface to setting the maximum heap size. Parses ARG (a
|
/* External interface to setting the maximum heap size. Parses ARG (a
|
number which can optionally have "k" or "m" appended and calls
|
number which can optionally have "k" or "m" appended and calls
|
_Jv_GCSetMaximumHeapSize. */
|
_Jv_GCSetMaximumHeapSize. */
|
void _Jv_SetMaximumHeapSize (const char *arg);
|
void _Jv_SetMaximumHeapSize (const char *arg);
|
|
|
/* External interface for setting the GC_free_space_divisor. Calls
|
/* External interface for setting the GC_free_space_divisor. Calls
|
GC_set_free_space_divisor and returns the old value. */
|
GC_set_free_space_divisor and returns the old value. */
|
int _Jv_SetGCFreeSpaceDivisor (int div);
|
int _Jv_SetGCFreeSpaceDivisor (int div);
|
|
|
/* Free the method cache, if one was allocated. This is only called
|
/* Free the method cache, if one was allocated. This is only called
|
during thread deregistration. */
|
during thread deregistration. */
|
void _Jv_FreeMethodCache ();
|
void _Jv_FreeMethodCache ();
|
|
|
/* Set the stack size for threads. Parses ARG, a number which can
|
/* Set the stack size for threads. Parses ARG, a number which can
|
optionally have "k" or "m" appended. */
|
optionally have "k" or "m" appended. */
|
void _Jv_SetStackSize (const char *arg);
|
void _Jv_SetStackSize (const char *arg);
|
|
|
extern "C" void JvRunMain (jclass klass, int argc, const char **argv);
|
extern "C" void JvRunMain (jclass klass, int argc, const char **argv);
|
extern "C" void JvRunMainName (const char *name, int argc, const char **argv);
|
extern "C" void JvRunMainName (const char *name, int argc, const char **argv);
|
|
|
void _Jv_RunMain (jclass klass, const char *name, int argc, const char **argv,
|
void _Jv_RunMain (jclass klass, const char *name, int argc, const char **argv,
|
bool is_jar);
|
bool is_jar);
|
|
|
void _Jv_RunMain (struct _Jv_VMInitArgs *vm_args, jclass klass,
|
void _Jv_RunMain (struct _Jv_VMInitArgs *vm_args, jclass klass,
|
const char *name, int argc, const char **argv, bool is_jar);
|
const char *name, int argc, const char **argv, bool is_jar);
|
|
|
// Delayed until after _Jv_AllocRawObj is declared.
|
// Delayed until after _Jv_AllocRawObj is declared.
|
inline _Jv_VTable *
|
inline _Jv_VTable *
|
_Jv_VTable::new_vtable (int count)
|
_Jv_VTable::new_vtable (int count)
|
{
|
{
|
size_t size = sizeof(_Jv_VTable) + (count - 1) * vtable_elt_size ();
|
size_t size = sizeof(_Jv_VTable) + (count - 1) * vtable_elt_size ();
|
return (_Jv_VTable *) _Jv_AllocRawObj (size);
|
return (_Jv_VTable *) _Jv_AllocRawObj (size);
|
}
|
}
|
|
|
// Determine if METH gets an entry in a VTable.
|
// Determine if METH gets an entry in a VTable.
|
static inline jboolean _Jv_isVirtualMethod (_Jv_Method *meth)
|
static inline jboolean _Jv_isVirtualMethod (_Jv_Method *meth)
|
{
|
{
|
using namespace java::lang::reflect;
|
using namespace java::lang::reflect;
|
return (((meth->accflags & (Modifier::STATIC | Modifier::PRIVATE)) == 0)
|
return (((meth->accflags & (Modifier::STATIC | Modifier::PRIVATE)) == 0)
|
&& meth->name->first() != '<');
|
&& meth->name->first() != '<');
|
}
|
}
|
|
|
// This function is used to determine the hash code of an object.
|
// This function is used to determine the hash code of an object.
|
inline jint
|
inline jint
|
_Jv_HashCode (jobject obj)
|
_Jv_HashCode (jobject obj)
|
{
|
{
|
// This was chosen to yield relatively well distributed results on
|
// This was chosen to yield relatively well distributed results on
|
// both 32- and 64-bit architectures. Note 0x7fffffff is prime.
|
// both 32- and 64-bit architectures. Note 0x7fffffff is prime.
|
// FIXME: we assume sizeof(long) == sizeof(void *).
|
// FIXME: we assume sizeof(long) == sizeof(void *).
|
return (jint) ((unsigned long) obj % 0x7fffffff);
|
return (jint) ((unsigned long) obj % 0x7fffffff);
|
}
|
}
|
|
|
// Return a raw pointer to the elements of an array given the array
|
// Return a raw pointer to the elements of an array given the array
|
// and its element type. You might think we could just pick a single
|
// and its element type. You might think we could just pick a single
|
// array type and use elements() on it, but we can't because we must
|
// array type and use elements() on it, but we can't because we must
|
// account for alignment of the element type. When ARRAY is null, we
|
// account for alignment of the element type. When ARRAY is null, we
|
// obtain the number of bytes taken by the base part of the array.
|
// obtain the number of bytes taken by the base part of the array.
|
inline char *
|
inline char *
|
_Jv_GetArrayElementFromElementType (jobject array,
|
_Jv_GetArrayElementFromElementType (jobject array,
|
jclass element_type)
|
jclass element_type)
|
{
|
{
|
char *elts;
|
char *elts;
|
if (element_type == JvPrimClass (byte))
|
if (element_type == JvPrimClass (byte))
|
elts = (char *) elements ((jbyteArray) array);
|
elts = (char *) elements ((jbyteArray) array);
|
else if (element_type == JvPrimClass (short))
|
else if (element_type == JvPrimClass (short))
|
elts = (char *) elements ((jshortArray) array);
|
elts = (char *) elements ((jshortArray) array);
|
else if (element_type == JvPrimClass (int))
|
else if (element_type == JvPrimClass (int))
|
elts = (char *) elements ((jintArray) array);
|
elts = (char *) elements ((jintArray) array);
|
else if (element_type == JvPrimClass (long))
|
else if (element_type == JvPrimClass (long))
|
elts = (char *) elements ((jlongArray) array);
|
elts = (char *) elements ((jlongArray) array);
|
else if (element_type == JvPrimClass (boolean))
|
else if (element_type == JvPrimClass (boolean))
|
elts = (char *) elements ((jbooleanArray) array);
|
elts = (char *) elements ((jbooleanArray) array);
|
else if (element_type == JvPrimClass (char))
|
else if (element_type == JvPrimClass (char))
|
elts = (char *) elements ((jcharArray) array);
|
elts = (char *) elements ((jcharArray) array);
|
else if (element_type == JvPrimClass (float))
|
else if (element_type == JvPrimClass (float))
|
elts = (char *) elements ((jfloatArray) array);
|
elts = (char *) elements ((jfloatArray) array);
|
else if (element_type == JvPrimClass (double))
|
else if (element_type == JvPrimClass (double))
|
elts = (char *) elements ((jdoubleArray) array);
|
elts = (char *) elements ((jdoubleArray) array);
|
else
|
else
|
elts = (char *) elements ((jobjectArray) array);
|
elts = (char *) elements ((jobjectArray) array);
|
return elts;
|
return elts;
|
}
|
}
|
|
|
extern "C" void _Jv_ThrowBadArrayIndex (jint bad_index)
|
extern "C" void _Jv_ThrowBadArrayIndex (jint bad_index)
|
__attribute__((noreturn));
|
__attribute__((noreturn));
|
extern "C" void _Jv_ThrowNullPointerException (void)
|
extern "C" void _Jv_ThrowNullPointerException (void)
|
__attribute__((noreturn));
|
__attribute__((noreturn));
|
extern "C" void _Jv_ThrowNoSuchMethodError (void)
|
extern "C" void _Jv_ThrowNoSuchMethodError (void)
|
__attribute__((noreturn));
|
__attribute__((noreturn));
|
extern "C" void _Jv_ThrowNoSuchFieldError (int)
|
extern "C" void _Jv_ThrowNoSuchFieldError (int)
|
__attribute__((noreturn));
|
__attribute__((noreturn));
|
extern "C" jobject _Jv_NewArray (jint type, jint size)
|
extern "C" jobject _Jv_NewArray (jint type, jint size)
|
__attribute__((__malloc__));
|
__attribute__((__malloc__));
|
extern "C" jobject _Jv_NewMultiArray (jclass klass, jint dims, ...)
|
extern "C" jobject _Jv_NewMultiArray (jclass klass, jint dims, ...)
|
__attribute__((__malloc__));
|
__attribute__((__malloc__));
|
extern "C" void *_Jv_CheckCast (jclass klass, jobject obj);
|
extern "C" void *_Jv_CheckCast (jclass klass, jobject obj);
|
extern "C" void *_Jv_LookupInterfaceMethod (jclass klass, Utf8Const *name,
|
extern "C" void *_Jv_LookupInterfaceMethod (jclass klass, Utf8Const *name,
|
Utf8Const *signature);
|
Utf8Const *signature);
|
extern "C" void *_Jv_LookupInterfaceMethodIdx (jclass klass, jclass iface,
|
extern "C" void *_Jv_LookupInterfaceMethodIdx (jclass klass, jclass iface,
|
int meth_idx);
|
int meth_idx);
|
extern "C" void _Jv_CheckArrayStore (jobject array, jobject obj);
|
extern "C" void _Jv_CheckArrayStore (jobject array, jobject obj);
|
extern "C" void _Jv_RegisterClass (jclass klass);
|
extern "C" void _Jv_RegisterClass (jclass klass);
|
extern "C" void _Jv_RegisterClasses (const jclass *classes);
|
extern "C" void _Jv_RegisterClasses (const jclass *classes);
|
extern "C" void _Jv_RegisterClasses_Counted (const jclass *classes,
|
extern "C" void _Jv_RegisterClasses_Counted (const jclass *classes,
|
size_t count);
|
size_t count);
|
extern "C" void _Jv_RegisterResource (void *vptr);
|
extern "C" void _Jv_RegisterResource (void *vptr);
|
extern void _Jv_UnregisterClass (_Jv_Utf8Const*, java::lang::ClassLoader*);
|
extern void _Jv_UnregisterClass (_Jv_Utf8Const*, java::lang::ClassLoader*);
|
|
|
extern "C" jobject _Jv_UnwrapJNIweakReference (jobject);
|
extern "C" jobject _Jv_UnwrapJNIweakReference (jobject);
|
|
|
extern jclass _Jv_FindClass (_Jv_Utf8Const *name,
|
extern jclass _Jv_FindClass (_Jv_Utf8Const *name,
|
java::lang::ClassLoader *loader);
|
java::lang::ClassLoader *loader);
|
|
|
extern jclass _Jv_FindClassNoException (_Jv_Utf8Const *name,
|
extern jclass _Jv_FindClassNoException (_Jv_Utf8Const *name,
|
java::lang::ClassLoader *loader);
|
java::lang::ClassLoader *loader);
|
|
|
extern jclass _Jv_FindClassFromSignature (char *,
|
extern jclass _Jv_FindClassFromSignature (char *,
|
java::lang::ClassLoader *loader,
|
java::lang::ClassLoader *loader,
|
char ** = NULL);
|
char ** = NULL);
|
|
|
extern jclass _Jv_FindClassFromSignatureNoException (char *,
|
extern jclass _Jv_FindClassFromSignatureNoException (char *,
|
java::lang::ClassLoader *loader,
|
java::lang::ClassLoader *loader,
|
char ** = NULL);
|
char ** = NULL);
|
|
|
extern void _Jv_GetTypesFromSignature (jmethodID method,
|
extern void _Jv_GetTypesFromSignature (jmethodID method,
|
jclass declaringClass,
|
jclass declaringClass,
|
JArray<jclass> **arg_types_out,
|
JArray<jclass> **arg_types_out,
|
jclass *return_type_out);
|
jclass *return_type_out);
|
|
|
extern jboolean _Jv_CheckAccess (jclass self_klass, jclass other_klass,
|
extern jboolean _Jv_CheckAccess (jclass self_klass, jclass other_klass,
|
jint flags);
|
jint flags);
|
|
|
extern jobject _Jv_CallAnyMethodA (jobject obj, jclass return_type,
|
extern jobject _Jv_CallAnyMethodA (jobject obj, jclass return_type,
|
jmethodID meth, jboolean is_constructor,
|
jmethodID meth, jboolean is_constructor,
|
JArray<jclass> *parameter_types,
|
JArray<jclass> *parameter_types,
|
jobjectArray args,
|
jobjectArray args,
|
jclass iface = NULL);
|
jclass iface = NULL);
|
|
|
union jvalue;
|
union jvalue;
|
extern void _Jv_CallAnyMethodA (jobject obj,
|
extern void _Jv_CallAnyMethodA (jobject obj,
|
jclass return_type,
|
jclass return_type,
|
jmethodID meth,
|
jmethodID meth,
|
jboolean is_constructor,
|
jboolean is_constructor,
|
jboolean is_virtual_call,
|
jboolean is_virtual_call,
|
JArray<jclass> *parameter_types,
|
JArray<jclass> *parameter_types,
|
const jvalue *args,
|
const jvalue *args,
|
jvalue *result,
|
jvalue *result,
|
jboolean is_jni_call = true,
|
jboolean is_jni_call = true,
|
jclass iface = NULL);
|
jclass iface = NULL);
|
|
|
extern void _Jv_CheckOrCreateLoadingConstraint (jclass,
|
extern void _Jv_CheckOrCreateLoadingConstraint (jclass,
|
java::lang::ClassLoader *);
|
java::lang::ClassLoader *);
|
|
|
extern jobject _Jv_NewMultiArray (jclass, jint ndims, jint* dims)
|
extern jobject _Jv_NewMultiArray (jclass, jint ndims, jint* dims)
|
__attribute__((__malloc__));
|
__attribute__((__malloc__));
|
|
|
extern "C" void _Jv_ThrowAbstractMethodError () __attribute__((__noreturn__));
|
extern "C" void _Jv_ThrowAbstractMethodError () __attribute__((__noreturn__));
|
|
|
/* Checked divide subroutines. */
|
/* Checked divide subroutines. */
|
extern "C"
|
extern "C"
|
{
|
{
|
jint _Jv_divI (jint, jint);
|
jint _Jv_divI (jint, jint);
|
jint _Jv_remI (jint, jint);
|
jint _Jv_remI (jint, jint);
|
jlong _Jv_divJ (jlong, jlong);
|
jlong _Jv_divJ (jlong, jlong);
|
jlong _Jv_remJ (jlong, jlong);
|
jlong _Jv_remJ (jlong, jlong);
|
}
|
}
|
|
|
/* Get the number of arguments (cf. argc) or 0 if our argument
|
/* Get the number of arguments (cf. argc) or 0 if our argument
|
list was never initialized. */
|
list was never initialized. */
|
extern int _Jv_GetNbArgs (void);
|
extern int _Jv_GetNbArgs (void);
|
|
|
/* Get the specified argument (cf. argv[index]) or "" if either
|
/* Get the specified argument (cf. argv[index]) or "" if either
|
our argument list was never initialized or the specified index
|
our argument list was never initialized or the specified index
|
is out of bounds. */
|
is out of bounds. */
|
extern const char * _Jv_GetSafeArg (int index);
|
extern const char * _Jv_GetSafeArg (int index);
|
|
|
/* Sets our argument list. Can be used by programs with non-standard
|
/* Sets our argument list. Can be used by programs with non-standard
|
entry points. */
|
entry points. */
|
extern void _Jv_SetArgs (int argc, const char **argv);
|
extern void _Jv_SetArgs (int argc, const char **argv);
|
|
|
/* Get the name of the running executable. */
|
/* Get the name of the running executable. */
|
extern const char *_Jv_ThisExecutable (void);
|
extern const char *_Jv_ThisExecutable (void);
|
|
|
/* Return a pointer to a symbol in executable or loaded library. */
|
/* Return a pointer to a symbol in executable or loaded library. */
|
void *_Jv_FindSymbolInExecutable (const char *);
|
void *_Jv_FindSymbolInExecutable (const char *);
|
|
|
/* Initialize JNI. */
|
/* Initialize JNI. */
|
extern void _Jv_JNI_Init (void);
|
extern void _Jv_JNI_Init (void);
|
|
|
/* Get or set the per-thread JNIEnv used by the invocation API. */
|
/* Get or set the per-thread JNIEnv used by the invocation API. */
|
_Jv_JNIEnv *_Jv_GetCurrentJNIEnv ();
|
_Jv_JNIEnv *_Jv_GetCurrentJNIEnv ();
|
void _Jv_SetCurrentJNIEnv (_Jv_JNIEnv *);
|
void _Jv_SetCurrentJNIEnv (_Jv_JNIEnv *);
|
|
|
/* Free a JNIEnv. */
|
/* Free a JNIEnv. */
|
void _Jv_FreeJNIEnv (_Jv_JNIEnv *);
|
void _Jv_FreeJNIEnv (_Jv_JNIEnv *);
|
|
|
extern "C" void _Jv_JNI_PopSystemFrame (_Jv_JNIEnv *);
|
extern "C" void _Jv_JNI_PopSystemFrame (_Jv_JNIEnv *);
|
_Jv_JNIEnv *_Jv_GetJNIEnvNewFrameWithLoader (::java::lang::ClassLoader *);
|
_Jv_JNIEnv *_Jv_GetJNIEnvNewFrameWithLoader (::java::lang::ClassLoader *);
|
|
|
struct _Jv_JavaVM;
|
struct _Jv_JavaVM;
|
_Jv_JavaVM *_Jv_GetJavaVM ();
|
_Jv_JavaVM *_Jv_GetJavaVM ();
|
|
|
/* Get a JVMTI environment */
|
/* Get a JVMTI environment */
|
struct _Jv_JVMTIEnv;
|
struct _Jv_JVMTIEnv;
|
_Jv_JVMTIEnv *_Jv_GetJVMTIEnv (void);
|
_Jv_JVMTIEnv *_Jv_GetJVMTIEnv (void);
|
|
|
/* Initialize JVMTI */
|
/* Initialize JVMTI */
|
extern void _Jv_JVMTI_Init (void);
|
extern void _Jv_JVMTI_Init (void);
|
|
|
// Some verification functions from defineclass.cc.
|
// Some verification functions from defineclass.cc.
|
bool _Jv_VerifyFieldSignature (_Jv_Utf8Const*sig);
|
bool _Jv_VerifyFieldSignature (_Jv_Utf8Const*sig);
|
bool _Jv_VerifyMethodSignature (_Jv_Utf8Const*sig);
|
bool _Jv_VerifyMethodSignature (_Jv_Utf8Const*sig);
|
bool _Jv_VerifyClassName (unsigned char* ptr, _Jv_ushort length);
|
bool _Jv_VerifyClassName (unsigned char* ptr, _Jv_ushort length);
|
bool _Jv_VerifyClassName (_Jv_Utf8Const *name);
|
bool _Jv_VerifyClassName (_Jv_Utf8Const *name);
|
bool _Jv_VerifyIdentifier (_Jv_Utf8Const *);
|
bool _Jv_VerifyIdentifier (_Jv_Utf8Const *);
|
bool _Jv_ClassNameSamePackage (_Jv_Utf8Const *name1, _Jv_Utf8Const *name2);
|
bool _Jv_ClassNameSamePackage (_Jv_Utf8Const *name1, _Jv_Utf8Const *name2);
|
|
|
struct _Jv_core_chain
|
struct _Jv_core_chain
|
{
|
{
|
int name_length;
|
int name_length;
|
const char *name;
|
const char *name;
|
int data_length;
|
int data_length;
|
const void *data;
|
const void *data;
|
|
|
struct _Jv_core_chain *next;
|
struct _Jv_core_chain *next;
|
};
|
};
|
|
|
// This is called when new core data is loaded.
|
// This is called when new core data is loaded.
|
extern void (*_Jv_RegisterCoreHook) (_Jv_core_chain *);
|
extern void (*_Jv_RegisterCoreHook) (_Jv_core_chain *);
|
|
|
_Jv_core_chain *_Jv_FindCore (_Jv_core_chain *node, jstring name);
|
_Jv_core_chain *_Jv_FindCore (_Jv_core_chain *node, jstring name);
|
void _Jv_FreeCoreChain (_Jv_core_chain *chain);
|
void _Jv_FreeCoreChain (_Jv_core_chain *chain);
|
|
|
#ifdef ENABLE_JVMPI
|
#ifdef ENABLE_JVMPI
|
|
|
#include "jvmpi.h"
|
#include "jvmpi.h"
|
|
|
extern void (*_Jv_JVMPI_Notify_OBJECT_ALLOC) (JVMPI_Event *event);
|
extern void (*_Jv_JVMPI_Notify_OBJECT_ALLOC) (JVMPI_Event *event);
|
extern void (*_Jv_JVMPI_Notify_THREAD_START) (JVMPI_Event *event);
|
extern void (*_Jv_JVMPI_Notify_THREAD_START) (JVMPI_Event *event);
|
extern void (*_Jv_JVMPI_Notify_THREAD_END) (JVMPI_Event *event);
|
extern void (*_Jv_JVMPI_Notify_THREAD_END) (JVMPI_Event *event);
|
#endif
|
#endif
|
|
|
/* FIXME: this should really be defined in some more generic place */
|
/* FIXME: this should really be defined in some more generic place */
|
#define ROUND(V, A) (((((unsigned) (V))-1) | ((A)-1))+1)
|
#define ROUND(V, A) (((((unsigned) (V))-1) | ((A)-1))+1)
|
|
|
extern void _Jv_RegisterBootstrapPackages ();
|
extern void _Jv_RegisterBootstrapPackages ();
|
|
|
#define FLAG_BINARYCOMPAT_ABI (1<<31) /* Class is built with the BC-ABI. */
|
#define FLAG_BINARYCOMPAT_ABI (1<<31) /* Class is built with the BC-ABI. */
|
|
|
#define FLAG_BOOTSTRAP_LOADER (1<<30) /* Used when defining a class that
|
#define FLAG_BOOTSTRAP_LOADER (1<<30) /* Used when defining a class that
|
should be loaded by the bootstrap
|
should be loaded by the bootstrap
|
loader. */
|
loader. */
|
|
|
// These are used to find ABI versions we recognize.
|
// These are used to find ABI versions we recognize.
|
#define GCJ_CXX_ABI_VERSION (__GNUC__ * 100000 + __GNUC_MINOR__ * 1000)
|
#define GCJ_CXX_ABI_VERSION (__GNUC__ * 100000 + __GNUC_MINOR__ * 1000)
|
|
|
// This is the old-style BC version ID used by GCJ 4.0.0.
|
// This is the old-style BC version ID used by GCJ 4.0.0.
|
#define OLD_GCJ_40_BC_ABI_VERSION (4 * 10000 + 0 * 10 + 5)
|
#define OLD_GCJ_40_BC_ABI_VERSION (4 * 10000 + 0 * 10 + 5)
|
|
|
// New style version IDs used by GCJ 4.0.1 and later.
|
// New style version IDs used by GCJ 4.0.1 and later.
|
#define GCJ_40_BC_ABI_VERSION (4 * 100000 + 0 * 1000)
|
#define GCJ_40_BC_ABI_VERSION (4 * 100000 + 0 * 1000)
|
|
|
void _Jv_CheckABIVersion (unsigned long value);
|
void _Jv_CheckABIVersion (unsigned long value);
|
|
|
|
|
inline bool
|
inline bool
|
_Jv_ClassForBootstrapLoader (unsigned long value)
|
_Jv_ClassForBootstrapLoader (unsigned long value)
|
{
|
{
|
return (value & FLAG_BOOTSTRAP_LOADER);
|
return (value & FLAG_BOOTSTRAP_LOADER);
|
}
|
}
|
|
|
// It makes the source cleaner if we simply always define this
|
// It makes the source cleaner if we simply always define this
|
// function. If the interpreter is not built, it will never return
|
// function. If the interpreter is not built, it will never return
|
// 'true'.
|
// 'true'.
|
extern inline jboolean
|
extern inline jboolean
|
_Jv_IsInterpretedClass (jclass c)
|
_Jv_IsInterpretedClass (jclass c)
|
{
|
{
|
return (c->accflags & java::lang::reflect::Modifier::INTERPRETED) != 0;
|
return (c->accflags & java::lang::reflect::Modifier::INTERPRETED) != 0;
|
}
|
}
|
|
|
// Return true if the class was compiled with the BC ABI.
|
// Return true if the class was compiled with the BC ABI.
|
extern inline jboolean
|
extern inline jboolean
|
_Jv_IsBinaryCompatibilityABI (jclass c)
|
_Jv_IsBinaryCompatibilityABI (jclass c)
|
{
|
{
|
// There isn't really a better test for the ABI type at this point,
|
// There isn't really a better test for the ABI type at this point,
|
// that will work once the class has been registered.
|
// that will work once the class has been registered.
|
return c->otable_syms || c->atable_syms || c->itable_syms;
|
return c->otable_syms || c->atable_syms || c->itable_syms;
|
}
|
}
|
|
|
// Returns whether the given class does not really exists (ie. we have no
|
// Returns whether the given class does not really exists (ie. we have no
|
// bytecode) but still allows us to do some very conservative actions.
|
// bytecode) but still allows us to do some very conservative actions.
|
// E.g. throwing a NoClassDefFoundError with the name of the missing
|
// E.g. throwing a NoClassDefFoundError with the name of the missing
|
// class.
|
// class.
|
extern inline jboolean
|
extern inline jboolean
|
_Jv_IsPhantomClass (jclass c)
|
_Jv_IsPhantomClass (jclass c)
|
{
|
{
|
return c->state == JV_STATE_PHANTOM;
|
return c->state == JV_STATE_PHANTOM;
|
}
|
}
|
|
|
// A helper function defined in prims.cc.
|
// A helper function defined in prims.cc.
|
char* _Jv_PrependVersionedLibdir (char* libpath);
|
char* _Jv_PrependVersionedLibdir (char* libpath);
|
|
|
|
|
// An enum for use with JvSetThreadState. We use a C++ enum rather
|
// An enum for use with JvSetThreadState. We use a C++ enum rather
|
// than the Java enum to avoid problems with class initialization
|
// than the Java enum to avoid problems with class initialization
|
// during VM bootstrap.
|
// during VM bootstrap.
|
typedef enum
|
typedef enum
|
{
|
{
|
JV_BLOCKED,
|
JV_BLOCKED,
|
JV_NEW,
|
JV_NEW,
|
JV_RUNNABLE,
|
JV_RUNNABLE,
|
JV_TERMINATED,
|
JV_TERMINATED,
|
JV_TIMED_WAITING,
|
JV_TIMED_WAITING,
|
JV_WAITING
|
JV_WAITING
|
} JvThreadState;
|
} JvThreadState;
|
|
|
// Temporarily set the thread's state.
|
// Temporarily set the thread's state.
|
class JvSetThreadState
|
class JvSetThreadState
|
{
|
{
|
private:
|
private:
|
::java::lang::Thread *thread;
|
::java::lang::Thread *thread;
|
jint saved;
|
jint saved;
|
|
|
public:
|
public:
|
|
|
// Note that 'cthread' could be NULL -- during VM startup there may
|
// Note that 'cthread' could be NULL -- during VM startup there may
|
// not be a Thread available.
|
// not be a Thread available.
|
JvSetThreadState(::java::lang::Thread *cthread, JvThreadState nstate)
|
JvSetThreadState(::java::lang::Thread *cthread, JvThreadState nstate)
|
: thread (cthread),
|
: thread (cthread),
|
saved (cthread ? cthread->state : (jint)JV_NEW)
|
saved (cthread ? cthread->state : (jint)JV_NEW)
|
{
|
{
|
if (thread)
|
if (thread)
|
thread->state = nstate;
|
thread->state = nstate;
|
}
|
}
|
|
|
~JvSetThreadState()
|
~JvSetThreadState()
|
{
|
{
|
if (thread)
|
if (thread)
|
thread->state = saved;
|
thread->state = saved;
|
}
|
}
|
};
|
};
|
|
|
// This structure is used to represent all the data the native side
|
// This structure is used to represent all the data the native side
|
// needs. An object of this type is assigned to the `data' member of
|
// needs. An object of this type is assigned to the `data' member of
|
// the Thread class.
|
// the Thread class.
|
struct natThread
|
struct natThread
|
{
|
{
|
// A thread is either alive, dead, or being sent a signal; if it is
|
// A thread is either alive, dead, or being sent a signal; if it is
|
// being sent a signal, it is also alive. Thus, if you want to know
|
// being sent a signal, it is also alive. Thus, if you want to know
|
// if a thread is alive, it is sufficient to test alive_status !=
|
// if a thread is alive, it is sufficient to test alive_status !=
|
// THREAD_DEAD.
|
// THREAD_DEAD.
|
volatile obj_addr_t alive_flag;
|
volatile obj_addr_t alive_flag;
|
|
|
// These are used to interrupt sleep and join calls. We can share a
|
// These are used to interrupt sleep and join calls. We can share a
|
// condition variable here since it only ever gets notified when the thread
|
// condition variable here since it only ever gets notified when the thread
|
// exits.
|
// exits.
|
_Jv_Mutex_t join_mutex;
|
_Jv_Mutex_t join_mutex;
|
_Jv_ConditionVariable_t join_cond;
|
_Jv_ConditionVariable_t join_cond;
|
|
|
// These are used by Unsafe.park() and Unsafe.unpark().
|
// These are used by Unsafe.park() and Unsafe.unpark().
|
ParkHelper park_helper;
|
ParkHelper park_helper;
|
|
|
// This is private data for the thread system layer.
|
// This is private data for the thread system layer.
|
_Jv_Thread_t *thread;
|
_Jv_Thread_t *thread;
|
|
|
// Each thread has its own JNI object.
|
// Each thread has its own JNI object.
|
_Jv_JNIEnv *jni_env;
|
_Jv_JNIEnv *jni_env;
|
};
|
};
|
|
|
#endif /* __JAVA_JVM_H__ */
|
#endif /* __JAVA_JVM_H__ */
|
|
|