1 // jvm.h - Header file for private implementation information. -*- c++ -*-
3 /* Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006 Free Software Foundation
5 This file is part of libgcj.
7 This software is copyrighted work licensed under the terms of the
8 Libgcj License. Please consult the file "LIBGCJ_LICENSE" for
11 #ifndef __JAVA_JVM_H__
12 #define __JAVA_JVM_H__
14 // Define this before including jni.h.
15 // jni.h is included by jvmpi.h, which might be included. We define
16 // this unconditionally because it is convenient and it lets other
17 // files include jni.h without difficulty.
18 #define __GCJ_JNI_IMPL__
20 #include <gcj/javaprims.h>
22 #include <java-assert.h>
23 #include <java-threads.h>
24 // Must include java-gc.h before Object.h for the implementation.
27 #include <java/lang/Object.h>
29 // Include cni.h before field.h to enable all definitions. FIXME.
31 #include <gcj/field.h>
33 /* Macro for possible unused arguments. */
34 #define MAYBE_UNUSED __attribute__((__unused__))
36 /* Structure of the virtual table. */
40 typedef struct { void *pc, *gp; } vtable_elt;
42 typedef void *vtable_elt;
47 // This must be last, as derived classes "extend" this by
48 // adding new data members.
52 void *get_method(int i) { return &method[i]; }
53 void set_method(int i, void *fptr) { method[i] = *(vtable_elt *)fptr; }
56 // We know that get_finalizer is only used for checking whether
57 // this object needs to have a finalizer registered. So it is
58 // safe to simply return just the PC component of the vtable
60 return ((vtable_elt *)(get_method(0)))->pc;
63 void *get_method(int i) { return method[i]; }
64 void set_method(int i, void *fptr) { method[i] = fptr; }
65 void *get_finalizer() { return get_method(0); }
68 static size_t vtable_elt_size() { return sizeof(vtable_elt); }
70 // Given a method index, return byte offset from the vtable pointer.
71 static jint idx_to_offset (int index)
73 return (2 * sizeof (void *)) + (index * vtable_elt_size ());
76 static _Jv_VTable *new_vtable (int count);
82 jint i; // Also stores smaller integral types.
84 jint ia[1]; // Half of _Jv_word2.
87 #if SIZEOF_VOID_P == 8
88 // We can safely put a long or a double in here without increasing
89 // the size of _Jv_Word; we take advantage of this in the interpreter.
96 struct _Jv_Field *field;
97 struct _Jv_Utf8Const *utf8;
98 struct _Jv_ResolvedMethod *rmethod;
116 jdouble double_value;
117 jobject object_value;
120 /* Extract a character from a Java-style Utf8 string.
121 * PTR points to the current character.
122 * LIMIT points to the end of the Utf8 string.
123 * PTR is incremented to point after the character thta gets returns.
124 * On an error, -1 is returned. */
125 #define UTF8_GET(PTR, LIMIT) \
126 ((PTR) >= (LIMIT) ? -1 \
127 : *(PTR) < 128 ? *(PTR)++ \
128 : (*(PTR)&0xE0) == 0xC0 && ((PTR)+=2)<=(LIMIT) && ((PTR)[-1]&0xC0) == 0x80 \
129 ? (((PTR)[-2] & 0x1F) << 6) + ((PTR)[-1] & 0x3F) \
130 : (*(PTR) & 0xF0) == 0xE0 && ((PTR) += 3) <= (LIMIT) \
131 && ((PTR)[-2] & 0xC0) == 0x80 && ((PTR)[-1] & 0xC0) == 0x80 \
132 ? (((PTR)[-3]&0x0F) << 12) + (((PTR)[-2]&0x3F) << 6) + ((PTR)[-1]&0x3F) \
135 extern int _Jv_strLengthUtf8(const char* str, int len);
137 typedef struct _Jv_Utf8Const Utf8Const;
138 _Jv_Utf8Const *_Jv_makeUtf8Const (const char *s, int len);
139 _Jv_Utf8Const *_Jv_makeUtf8Const (jstring string);
140 extern jboolean _Jv_equalUtf8Consts (const _Jv_Utf8Const *, const _Jv_Utf8Const *);
141 extern jboolean _Jv_equal (_Jv_Utf8Const *, jstring, jint);
142 extern jboolean _Jv_equaln (_Jv_Utf8Const *, jstring, jint);
144 /* Helper class which converts a jstring to a temporary char*.
145 Uses the supplied buffer, if non-null. Otherwise, allocates
146 the buffer on the heap. Use the JV_TEMP_UTF_STRING macro,
147 which follows, to automatically allocate a stack buffer if
148 the string is small enough. */
149 class _Jv_TempUTFString
152 _Jv_TempUTFString(jstring jstr, char* buf=0);
153 ~_Jv_TempUTFString();
156 operator const char*() const
160 const char* buf() const
174 inline _Jv_TempUTFString::_Jv_TempUTFString (jstring jstr, char* buf)
175 : buf_(0), heapAllocated_(false)
178 jsize len = JvGetStringUTFLength (jstr);
183 buf_ = (char*) _Jv_Malloc (len+1);
184 heapAllocated_ = true;
187 JvGetStringUTFRegion (jstr, 0, jstr->length(), buf_);
191 inline _Jv_TempUTFString::~_Jv_TempUTFString ()
197 /* Macro which uses _Jv_TempUTFString. Allocates a stack-based
198 buffer if the string and its null terminator are <= 256
199 characters in length. Otherwise, a heap-based buffer is
200 used. The parameters to this macro are the variable name
201 which is an instance of _Jv_TempUTFString (above) and a
206 jstring jstr = getAJString();
207 JV_TEMP_UTF_STRING(utfstr, jstr);
208 printf("The string is: %s\n", utfstr.buf());
211 #define JV_TEMP_UTF_STRING(utfstr, jstr) \
212 jstring utfstr##thejstr = (jstr); \
213 jsize utfstr##_len = utfstr##thejstr ? JvGetStringUTFLength (utfstr##thejstr) + 1 : 0; \
214 char utfstr##_buf[utfstr##_len <= 256 ? utfstr##_len : 0]; \
215 _Jv_TempUTFString utfstr(utfstr##thejstr, sizeof(utfstr##_buf)==0 ? 0 : utfstr##_buf)
219 /* Some constants used during lookup of special class methods. */
220 extern _Jv_Utf8Const *void_signature; /* "()V" */
221 extern _Jv_Utf8Const *clinit_name; /* "<clinit>" */
222 extern _Jv_Utf8Const *init_name; /* "<init>" */
223 extern _Jv_Utf8Const *finit_name; /* "finit$", */
225 /* Set to true by _Jv_CreateJavaVM. */
226 extern bool runtimeInitialized;
228 /* Print out class names as they are initialized. */
229 extern bool verbose_class_flag;
231 /* When true, enable the bytecode verifier and BC-ABI verification. */
232 extern bool verifyClasses;
234 /* Thread stack size specified by the -Xss runtime argument. */
235 extern size_t stack_size;
238 // This class handles all aspects of class preparation and linking.
242 typedef unsigned int uaddr __attribute__ ((mode (pointer)));
244 static _Jv_Field *find_field_helper(jclass, _Jv_Utf8Const *, _Jv_Utf8Const *,
246 static _Jv_Field *find_field(jclass, jclass, jclass *, _Jv_Utf8Const *,
248 static void prepare_constant_time_tables(jclass);
249 static jshort get_interfaces(jclass, _Jv_ifaces *);
250 static void link_symbol_table(jclass);
251 static void link_exception_table(jclass);
252 static void layout_interface_methods(jclass);
253 static void layout_vtable_methods(jclass);
254 static void set_vtable_entries(jclass, _Jv_VTable *);
255 static void make_vtable(jclass);
256 static void ensure_fields_laid_out(jclass);
257 static void ensure_class_linked(jclass);
258 static void ensure_supers_installed(jclass);
259 static void add_miranda_methods(jclass, jclass);
260 static void ensure_method_table_complete(jclass);
261 static void verify_class(jclass);
262 static jshort find_iindex(jclass *, jshort *, jshort);
263 static jshort indexof(void *, void **, jshort);
264 static int get_alignment_from_class(jclass);
265 static void generate_itable(jclass, _Jv_ifaces *, jshort *);
266 static jshort append_partial_itable(jclass, jclass, void **, jshort);
267 static _Jv_Method *search_method_in_class (jclass, jclass,
270 bool check_perms = true);
271 static _Jv_Method *search_method_in_superclasses (jclass cls, jclass klass,
272 _Jv_Utf8Const *method_name,
273 _Jv_Utf8Const *method_signature,
275 bool check_perms = true);
276 static void *create_error_method(_Jv_Utf8Const *);
278 /* The least significant bit of the signature pointer in a symbol
279 table is set to 1 by the compiler if the reference is "special",
280 i.e. if it is an access to a private field or method. Extract
281 that bit, clearing it in the address and setting the LSB of
282 SPECIAL accordingly. */
283 static void maybe_adjust_signature (_Jv_Utf8Const *&s, uaddr &special)
286 _Jv_Utf8Const *signature;
287 uaddr signature_bits;
290 special = signature_bits & 1;
291 signature_bits -= special;
297 static bool has_field_p (jclass, _Jv_Utf8Const *);
298 static void print_class_loaded (jclass);
299 static void resolve_class_ref (jclass, jclass *);
300 static void wait_for_state(jclass, int);
301 static _Jv_word resolve_pool_entry (jclass, int, bool =false);
302 static void resolve_field (_Jv_Field *, java::lang::ClassLoader *);
303 static void verify_type_assertions (jclass);
306 /* Type of pointer used as finalizer. */
307 typedef void _Jv_FinalizerFunc (jobject);
309 /* Allocate space for a new Java object. */
310 void *_Jv_AllocObj (jsize size, jclass cl) __attribute__((__malloc__));
311 /* Allocate space for a potentially uninitialized pointer-free object.
312 Interesting only with JV_HASH_SYNCHRONIZATION. */
313 void *_Jv_AllocPtrFreeObj (jsize size, jclass cl) __attribute__((__malloc__));
314 /* Allocate space for an array of Java objects. */
315 void *_Jv_AllocArray (jsize size, jclass cl) __attribute__((__malloc__));
316 /* Allocate space that is known to be pointer-free. */
317 void *_Jv_AllocBytes (jsize size) __attribute__((__malloc__));
318 /* Allocate space for a new non-Java object, which does not have the usual
319 Java object header but may contain pointers to other GC'ed objects. */
320 void *_Jv_AllocRawObj (jsize size) __attribute__((__malloc__));
321 /* Explicitly throw an out-of-memory exception. */
322 void _Jv_ThrowNoMemory() __attribute__((__noreturn__));
323 /* Allocate an object with a single pointer. The first word is reserved
324 for the GC, and the second word is the traced pointer. */
325 void *_Jv_AllocTraceOne (jsize size /* incl. reserved slot */);
326 /* Ditto, but for two traced pointers. */
327 void *_Jv_AllocTraceTwo (jsize size /* incl. reserved slot */);
328 /* Initialize the GC. */
329 void _Jv_InitGC (void);
330 /* Register a finalizer. */
331 void _Jv_RegisterFinalizer (void *object, _Jv_FinalizerFunc *method);
332 /* Compute the GC descriptor for a class */
333 void * _Jv_BuildGCDescr(jclass);
335 /* Allocate some unscanned, unmoveable memory. Return NULL if out of
337 void *_Jv_MallocUnchecked (jsize size) __attribute__((__malloc__));
339 /* Initialize finalizers. The argument is a function to be called
340 when a finalizer is ready to be run. */
341 void _Jv_GCInitializeFinalizers (void (*notifier) (void));
342 /* Run finalizers for objects ready to be finalized.. */
343 void _Jv_RunFinalizers (void);
344 /* Run all finalizers. Should be called only before exit. */
345 void _Jv_RunAllFinalizers (void);
347 void _Jv_RunGC (void);
348 /* Disable and enable GC. */
349 void _Jv_DisableGC (void);
350 void _Jv_EnableGC (void);
351 /* Register a disappearing link. This is a field F which should be
352 cleared when *F is found to be inaccessible. This is used in the
353 implementation of java.lang.ref.Reference. */
354 void _Jv_GCRegisterDisappearingLink (jobject *objp);
355 /* Return true if OBJECT should be reclaimed. This is used to
356 implement soft references. */
357 jboolean _Jv_GCCanReclaimSoftReference (jobject obj);
359 /* Register a finalizer for a String object. This is only used by
360 the intern() implementation. */
361 void _Jv_RegisterStringFinalizer (jobject str);
362 /* This is called to actually finalize a possibly-intern()d String. */
363 void _Jv_FinalizeString (jobject str);
365 /* Return approximation of total size of heap. */
366 long _Jv_GCTotalMemory (void);
367 /* Return approximation of total free memory. */
368 long _Jv_GCFreeMemory (void);
370 /* Set initial heap size. If SIZE==0, ignore. Should be run before
371 _Jv_InitGC. Not required to have any actual effect. */
372 void _Jv_GCSetInitialHeapSize (size_t size);
374 /* Set maximum heap size. If SIZE==0, unbounded. Should be run
375 before _Jv_InitGC. Not required to have any actual effect. */
376 void _Jv_GCSetMaximumHeapSize (size_t size);
378 /* External interface to setting the heap size. Parses ARG (a number
379 which can optionally have "k" or "m" appended and calls
380 _Jv_GCSetInitialHeapSize. */
381 void _Jv_SetInitialHeapSize (const char *arg);
383 /* External interface to setting the maximum heap size. Parses ARG (a
384 number which can optionally have "k" or "m" appended and calls
385 _Jv_GCSetMaximumHeapSize. */
386 void _Jv_SetMaximumHeapSize (const char *arg);
388 /* Free the method cache, if one was allocated. This is only called
389 during thread deregistration. */
390 void _Jv_FreeMethodCache ();
392 /* Set the stack size for threads. Parses ARG, a number which can
393 optionally have "k" or "m" appended. */
394 void _Jv_SetStackSize (const char *arg);
396 extern "C" void JvRunMain (jclass klass, int argc, const char **argv);
397 void _Jv_RunMain (jclass klass, const char *name, int argc, const char **argv,
400 void _Jv_RunMain (struct _Jv_VMInitArgs *vm_args, jclass klass,
401 const char *name, int argc, const char **argv, bool is_jar);
403 // Delayed until after _Jv_AllocRawObj is declared.
405 _Jv_VTable::new_vtable (int count)
407 size_t size = sizeof(_Jv_VTable) + (count - 1) * vtable_elt_size ();
408 return (_Jv_VTable *) _Jv_AllocRawObj (size);
411 // Determine if METH gets an entry in a VTable.
412 static inline jboolean _Jv_isVirtualMethod (_Jv_Method *meth)
414 using namespace java::lang::reflect;
415 return (((meth->accflags & (Modifier::STATIC | Modifier::PRIVATE)) == 0)
416 && meth->name->first() != '<');
419 // This function is used to determine the hash code of an object.
421 _Jv_HashCode (jobject obj)
423 // This was chosen to yield relatively well distributed results on
424 // both 32- and 64-bit architectures. Note 0x7fffffff is prime.
425 // FIXME: we assume sizeof(long) == sizeof(void *).
426 return (jint) ((unsigned long) obj % 0x7fffffff);
429 // Return a raw pointer to the elements of an array given the array
430 // and its element type. You might think we could just pick a single
431 // array type and use elements() on it, but we can't because we must
432 // account for alignment of the element type. When ARRAY is null, we
433 // obtain the number of bytes taken by the base part of the array.
435 _Jv_GetArrayElementFromElementType (jobject array,
439 if (element_type == JvPrimClass (byte))
440 elts = (char *) elements ((jbyteArray) array);
441 else if (element_type == JvPrimClass (short))
442 elts = (char *) elements ((jshortArray) array);
443 else if (element_type == JvPrimClass (int))
444 elts = (char *) elements ((jintArray) array);
445 else if (element_type == JvPrimClass (long))
446 elts = (char *) elements ((jlongArray) array);
447 else if (element_type == JvPrimClass (boolean))
448 elts = (char *) elements ((jbooleanArray) array);
449 else if (element_type == JvPrimClass (char))
450 elts = (char *) elements ((jcharArray) array);
451 else if (element_type == JvPrimClass (float))
452 elts = (char *) elements ((jfloatArray) array);
453 else if (element_type == JvPrimClass (double))
454 elts = (char *) elements ((jdoubleArray) array);
456 elts = (char *) elements ((jobjectArray) array);
460 extern "C" void _Jv_ThrowBadArrayIndex (jint bad_index)
461 __attribute__((noreturn));
462 extern "C" void _Jv_ThrowNullPointerException (void)
463 __attribute__((noreturn));
464 extern "C" void _Jv_ThrowNoSuchMethodError (void)
465 __attribute__((noreturn));
466 extern "C" void _Jv_ThrowNoSuchFieldError (int)
467 __attribute__((noreturn));
468 extern "C" jobject _Jv_NewArray (jint type, jint size)
469 __attribute__((__malloc__));
470 extern "C" jobject _Jv_NewMultiArray (jclass klass, jint dims, ...)
471 __attribute__((__malloc__));
472 extern "C" void *_Jv_CheckCast (jclass klass, jobject obj);
473 extern "C" void *_Jv_LookupInterfaceMethod (jclass klass, Utf8Const *name,
474 Utf8Const *signature);
475 extern "C" void *_Jv_LookupInterfaceMethodIdx (jclass klass, jclass iface,
477 extern "C" void _Jv_CheckArrayStore (jobject array, jobject obj);
478 extern "C" void _Jv_RegisterClass (jclass klass);
479 extern "C" void _Jv_RegisterClasses (const jclass *classes);
480 extern "C" void _Jv_RegisterClasses_Counted (const jclass *classes,
482 extern "C" void _Jv_RegisterResource (void *vptr);
483 extern void _Jv_UnregisterClass (_Jv_Utf8Const*, java::lang::ClassLoader*);
485 extern "C" jobject _Jv_UnwrapJNIweakReference (jobject);
487 extern jclass _Jv_FindClass (_Jv_Utf8Const *name,
488 java::lang::ClassLoader *loader);
490 extern jclass _Jv_FindClassNoException (_Jv_Utf8Const *name,
491 java::lang::ClassLoader *loader);
493 extern jclass _Jv_FindClassFromSignature (char *,
494 java::lang::ClassLoader *loader,
497 extern jclass _Jv_FindClassFromSignatureNoException (char *,
498 java::lang::ClassLoader *loader,
501 extern void _Jv_GetTypesFromSignature (jmethodID method,
502 jclass declaringClass,
503 JArray<jclass> **arg_types_out,
504 jclass *return_type_out);
506 extern jboolean _Jv_CheckAccess (jclass self_klass, jclass other_klass,
509 extern jobject _Jv_CallAnyMethodA (jobject obj, jclass return_type,
510 jmethodID meth, jboolean is_constructor,
511 JArray<jclass> *parameter_types,
513 jclass iface = NULL);
516 extern void _Jv_CallAnyMethodA (jobject obj,
519 jboolean is_constructor,
520 jboolean is_virtual_call,
521 JArray<jclass> *parameter_types,
524 jboolean is_jni_call = true,
525 jclass iface = NULL);
527 extern jobject _Jv_NewMultiArray (jclass, jint ndims, jint* dims)
528 __attribute__((__malloc__));
530 extern "C" void _Jv_ThrowAbstractMethodError () __attribute__((__noreturn__));
532 /* Checked divide subroutines. */
535 jint _Jv_divI (jint, jint);
536 jint _Jv_remI (jint, jint);
537 jlong _Jv_divJ (jlong, jlong);
538 jlong _Jv_remJ (jlong, jlong);
541 /* Get the number of arguments (cf. argc) or 0 if our argument
542 list was never initialized. */
543 extern int _Jv_GetNbArgs (void);
545 /* Get the specified argument (cf. argv[index]) or "" if either
546 our argument list was never initialized or the specified index
548 extern const char * _Jv_GetSafeArg (int index);
550 /* Sets our argument list. Can be used by programs with non-standard
552 extern void _Jv_SetArgs (int argc, const char **argv);
554 /* Get the name of the running executable. */
555 extern const char *_Jv_ThisExecutable (void);
557 /* Return a pointer to a symbol in executable or loaded library. */
558 void *_Jv_FindSymbolInExecutable (const char *);
560 /* Initialize JNI. */
561 extern void _Jv_JNI_Init (void);
563 /* Get or set the per-thread JNIEnv used by the invocation API. */
564 _Jv_JNIEnv *_Jv_GetCurrentJNIEnv ();
565 void _Jv_SetCurrentJNIEnv (_Jv_JNIEnv *);
568 void _Jv_FreeJNIEnv (_Jv_JNIEnv *);
571 void _Jv_FreeJNIEnv (_Jv_JNIEnv *);
574 _Jv_JavaVM *_Jv_GetJavaVM ();
576 /* Get the JVMTI environment */
578 _Jv_JVMTIEnv *_Jv_GetJVMTIEnv (void);
580 // Some verification functions from defineclass.cc.
581 bool _Jv_VerifyFieldSignature (_Jv_Utf8Const*sig);
582 bool _Jv_VerifyMethodSignature (_Jv_Utf8Const*sig);
583 bool _Jv_VerifyClassName (unsigned char* ptr, _Jv_ushort length);
584 bool _Jv_VerifyClassName (_Jv_Utf8Const *name);
585 bool _Jv_VerifyIdentifier (_Jv_Utf8Const *);
586 bool _Jv_ClassNameSamePackage (_Jv_Utf8Const *name1, _Jv_Utf8Const *name2);
588 struct _Jv_core_chain
595 struct _Jv_core_chain *next;
598 // This is called when new core data is loaded.
599 extern void (*_Jv_RegisterCoreHook) (_Jv_core_chain *);
601 _Jv_core_chain *_Jv_FindCore (_Jv_core_chain *node, jstring name);
602 void _Jv_FreeCoreChain (_Jv_core_chain *chain);
608 extern void (*_Jv_JVMPI_Notify_OBJECT_ALLOC) (JVMPI_Event *event);
609 extern void (*_Jv_JVMPI_Notify_THREAD_START) (JVMPI_Event *event);
610 extern void (*_Jv_JVMPI_Notify_THREAD_END) (JVMPI_Event *event);
613 /* FIXME: this should really be defined in some more generic place */
614 #define ROUND(V, A) (((((unsigned) (V))-1) | ((A)-1))+1)
616 extern void _Jv_RegisterBootstrapPackages ();
618 #define FLAG_BINARYCOMPAT_ABI (1<<31) /* Class is built with the BC-ABI. */
620 #define FLAG_BOOTSTRAP_LOADER (1<<30) /* Used when defining a class that
621 should be loaded by the bootstrap
624 // These are used to find ABI versions we recognize.
625 #define GCJ_CXX_ABI_VERSION (__GNUC__ * 100000 + __GNUC_MINOR__ * 1000)
627 // This is the old-style BC version ID used by GCJ 4.0.0.
628 #define OLD_GCJ_40_BC_ABI_VERSION (4 * 10000 + 0 * 10 + 5)
630 // New style version IDs used by GCJ 4.0.1 and later.
631 #define GCJ_40_BC_ABI_VERSION (4 * 100000 + 0 * 1000)
634 _Jv_CheckABIVersion (unsigned long value)
636 // We are compatible with GCJ 4.0.0 BC-ABI classes. This release used a
637 // different format for the version ID string.
638 if (value == OLD_GCJ_40_BC_ABI_VERSION)
641 // The 20 low-end bits are used for the version number.
642 unsigned long version = value & 0xfffff;
644 if (value & FLAG_BINARYCOMPAT_ABI)
646 int abi_rev = version % 100;
647 int abi_ver = version - abi_rev;
648 if (abi_ver == GCJ_40_BC_ABI_VERSION && abi_rev <= 0)
653 return version == GCJ_CXX_ABI_VERSION;
659 _Jv_ClassForBootstrapLoader (unsigned long value)
661 return (value & FLAG_BOOTSTRAP_LOADER);
664 // It makes the source cleaner if we simply always define this
665 // function. If the interpreter is not built, it will never return
667 extern inline jboolean
668 _Jv_IsInterpretedClass (jclass c)
670 return (c->accflags & java::lang::reflect::Modifier::INTERPRETED) != 0;
673 // Return true if the class was compiled with the BC ABI.
674 extern inline jboolean
675 _Jv_IsBinaryCompatibilityABI (jclass c)
677 // There isn't really a better test for the ABI type at this point,
678 // that will work once the class has been registered.
679 return c->otable_syms || c->atable_syms || c->itable_syms;
682 // Returns whether the given class does not really exists (ie. we have no
683 // bytecode) but still allows us to do some very conservative actions.
684 // E.g. throwing a NoClassDefFoundError with the name of the missing
686 extern inline jboolean
687 _Jv_IsPhantomClass (jclass c)
689 return c->state == JV_STATE_PHANTOM;
692 // A helper function defined in prims.cc.
693 char* _Jv_PrependVersionedLibdir (char* libpath);
695 #endif /* __JAVA_JVM_H__ */