1 // prims.cc - Code for core of runtime environment.
3 /* Copyright (C) 1998, 1999, 2000, 2001, 2002 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
26 #include <java-signal.h>
27 #include <java-threads.h>
31 #include <java/lang/ThreadGroup.h>
34 #ifndef DISABLE_GETENV_PROPERTIES
36 #include <java-props.h>
37 #define PROCESS_GCJ_PROPERTIES process_gcj_properties()
39 #define PROCESS_GCJ_PROPERTIES
40 #endif // DISABLE_GETENV_PROPERTIES
42 #include <java/lang/Class.h>
43 #include <java/lang/ClassLoader.h>
44 #include <java/lang/Runtime.h>
45 #include <java/lang/String.h>
46 #include <java/lang/Thread.h>
47 #include <java/lang/ThreadGroup.h>
48 #include <java/lang/ArrayIndexOutOfBoundsException.h>
49 #include <java/lang/ArithmeticException.h>
50 #include <java/lang/ClassFormatError.h>
51 #include <java/lang/InternalError.h>
52 #include <java/lang/NegativeArraySizeException.h>
53 #include <java/lang/NullPointerException.h>
54 #include <java/lang/OutOfMemoryError.h>
55 #include <java/lang/System.h>
56 #include <java/lang/VMThrowable.h>
57 #include <java/lang/reflect/Modifier.h>
58 #include <java/io/PrintStream.h>
59 #include <java/lang/UnsatisfiedLinkError.h>
60 #include <java/lang/VirtualMachineError.h>
61 #include <gnu/gcj/runtime/VMClassLoader.h>
62 #include <gnu/gcj/runtime/FinalizerThread.h>
63 #include <gnu/gcj/runtime/FirstThread.h>
69 // We allocate a single OutOfMemoryError exception which we keep
70 // around for use if we run out of memory.
71 static java::lang::OutOfMemoryError
*no_memory
;
73 // Largest representable size_t.
74 #define SIZE_T_MAX ((size_t) (~ (size_t) 0))
76 static const char *no_properties
[] = { NULL
};
78 // Properties set at compile time.
79 const char **_Jv_Compiler_Properties
= no_properties
;
81 // The JAR file to add to the beginning of java.class.path.
82 const char *_Jv_Jar_Class_Path
;
84 #ifndef DISABLE_GETENV_PROPERTIES
85 // Property key/value pairs.
86 property_pair
*_Jv_Environment_Properties
;
89 // The name of this executable.
90 static char *_Jv_execName
;
92 // Stash the argv pointer to benefit native libraries that need it.
93 const char **_Jv_argv
;
97 // Pointer to JVMPI notification functions.
98 void (*_Jv_JVMPI_Notify_OBJECT_ALLOC
) (JVMPI_Event
*event
);
99 void (*_Jv_JVMPI_Notify_THREAD_START
) (JVMPI_Event
*event
);
100 void (*_Jv_JVMPI_Notify_THREAD_END
) (JVMPI_Event
*event
);
104 extern "C" void _Jv_ThrowSignal (jthrowable
) __attribute ((noreturn
));
106 // Just like _Jv_Throw, but fill in the stack trace first. Although
107 // this is declared extern in order that its name not be mangled, it
108 // is not intended to be used outside this file.
110 _Jv_ThrowSignal (jthrowable throwable
)
112 throwable
->fillInStackTrace ();
117 static java::lang::NullPointerException
*nullp
;
119 SIGNAL_HANDLER (catch_segv
)
121 MAKE_THROW_FRAME (nullp
);
122 _Jv_ThrowSignal (nullp
);
126 static java::lang::ArithmeticException
*arithexception
;
129 SIGNAL_HANDLER (catch_fpe
)
131 #ifdef HANDLE_DIVIDE_OVERFLOW
132 HANDLE_DIVIDE_OVERFLOW
;
134 MAKE_THROW_FRAME (arithexception
);
136 _Jv_ThrowSignal (arithexception
);
143 _Jv_equalUtf8Consts (Utf8Const
* a
, Utf8Const
*b
)
146 _Jv_ushort
*aptr
, *bptr
;
149 if (a
->hash
!= b
->hash
)
152 if (b
->length
!= len
)
154 aptr
= (_Jv_ushort
*)a
->data
;
155 bptr
= (_Jv_ushort
*)b
->data
;
156 len
= (len
+ 1) >> 1;
158 if (*aptr
++ != *bptr
++)
163 /* True iff A is equal to STR.
164 HASH is STR->hashCode().
168 _Jv_equal (Utf8Const
* a
, jstring str
, jint hash
)
170 if (a
->hash
!= (_Jv_ushort
) hash
)
172 jint len
= str
->length();
174 jchar
*sptr
= _Jv_GetStringChars (str
);
175 unsigned char* ptr
= (unsigned char*) a
->data
;
176 unsigned char* limit
= ptr
+ a
->length
;
179 int ch
= UTF8_GET (ptr
, limit
);
188 /* Like _Jv_equal, but stop after N characters. */
190 _Jv_equaln (Utf8Const
*a
, jstring str
, jint n
)
192 jint len
= str
->length();
194 jchar
*sptr
= _Jv_GetStringChars (str
);
195 unsigned char* ptr
= (unsigned char*) a
->data
;
196 unsigned char* limit
= ptr
+ a
->length
;
197 for (; n
-- > 0; i
++, sptr
++)
199 int ch
= UTF8_GET (ptr
, limit
);
208 /* Count the number of Unicode chars encoded in a given Ut8 string. */
210 _Jv_strLengthUtf8(char* str
, int len
)
213 unsigned char* limit
;
216 ptr
= (unsigned char*) str
;
219 for (; ptr
< limit
; str_length
++)
221 if (UTF8_GET (ptr
, limit
) < 0)
227 /* Calculate a hash value for a string encoded in Utf8 format.
228 * This returns the same hash value as specified or java.lang.String.hashCode.
231 hashUtf8String (char* str
, int len
)
233 unsigned char* ptr
= (unsigned char*) str
;
234 unsigned char* limit
= ptr
+ len
;
239 int ch
= UTF8_GET (ptr
, limit
);
240 /* Updated specification from
241 http://www.javasoft.com/docs/books/jls/clarify.html. */
242 hash
= (31 * hash
) + ch
;
248 _Jv_makeUtf8Const (char* s
, int len
)
252 Utf8Const
* m
= (Utf8Const
*) _Jv_AllocBytes (sizeof(Utf8Const
) + len
+ 1);
253 memcpy (m
->data
, s
, len
);
256 m
->hash
= hashUtf8String (s
, len
) & 0xFFFF;
261 _Jv_makeUtf8Const (jstring string
)
263 jint hash
= string
->hashCode ();
264 jint len
= _Jv_GetStringUTFLength (string
);
266 Utf8Const
* m
= (Utf8Const
*)
267 _Jv_AllocBytes (sizeof(Utf8Const
) + len
+ 1);
272 _Jv_GetStringUTFRegion (string
, 0, string
->length (), m
->data
);
282 _Jv_Abort (const char *function
, const char *file
, int line
,
286 _Jv_Abort (const char *, const char *, int, const char *message
)
291 "libgcj failure: %s\n in function %s, file %s, line %d\n",
292 message
, function
, file
, line
);
294 fprintf (stderr
, "libgcj failure: %s\n", message
);
300 fail_on_finalization (jobject
)
302 JvFail ("object was finalized");
306 _Jv_GCWatch (jobject obj
)
308 _Jv_RegisterFinalizer (obj
, fail_on_finalization
);
312 _Jv_ThrowBadArrayIndex(jint bad_index
)
314 throw new java::lang::ArrayIndexOutOfBoundsException
315 (java::lang::String::valueOf (bad_index
));
319 _Jv_ThrowNullPointerException ()
321 throw new java::lang::NullPointerException
;
324 // Explicitly throw a no memory exception.
325 // The collector calls this when it encounters an out-of-memory condition.
326 void _Jv_ThrowNoMemory()
333 jvmpi_notify_alloc(jclass klass
, jint size
, jobject obj
)
335 // Service JVMPI allocation request.
336 if (__builtin_expect (_Jv_JVMPI_Notify_OBJECT_ALLOC
!= 0, false))
340 event
.event_type
= JVMPI_EVENT_OBJECT_ALLOC
;
342 event
.u
.obj_alloc
.arena_id
= 0;
343 event
.u
.obj_alloc
.class_id
= (jobjectID
) klass
;
344 event
.u
.obj_alloc
.is_array
= 0;
345 event
.u
.obj_alloc
.size
= size
;
346 event
.u
.obj_alloc
.obj_id
= (jobjectID
) obj
;
348 // FIXME: This doesn't look right for the Boehm GC. A GC may
349 // already be in progress. _Jv_DisableGC () doesn't wait for it.
350 // More importantly, I don't see the need for disabling GC, since we
351 // blatantly have a pointer to obj on our stack, ensuring that the
352 // object can't be collected. Even for a nonconservative collector,
353 // it appears to me that this must be true, since we are about to
354 // return obj. Isn't this whole approach way too intrusive for
355 // a useful profiling interface? - HB
357 (*_Jv_JVMPI_Notify_OBJECT_ALLOC
) (&event
);
361 #else /* !ENABLE_JVMPI */
362 # define jvmpi_notify_alloc(klass,size,obj) /* do nothing */
365 // Allocate a new object of class KLASS. SIZE is the size of the object
366 // to allocate. You might think this is redundant, but it isn't; some
367 // classes, such as String, aren't of fixed size.
368 // First a version that assumes that we have no finalizer, and that
369 // the class is already initialized.
370 // If we know that JVMPI is disabled, this can be replaced by a direct call
371 // to the allocator for the appropriate GC.
373 _Jv_AllocObjectNoInitNoFinalizer (jclass klass
, jint size
)
375 jobject obj
= (jobject
) _Jv_AllocObj (size
, klass
);
376 jvmpi_notify_alloc (klass
, size
, obj
);
380 // And now a version that initializes if necessary.
382 _Jv_AllocObjectNoFinalizer (jclass klass
, jint size
)
384 _Jv_InitClass (klass
);
385 jobject obj
= (jobject
) _Jv_AllocObj (size
, klass
);
386 jvmpi_notify_alloc (klass
, size
, obj
);
390 // And now the general version that registers a finalizer if necessary.
392 _Jv_AllocObject (jclass klass
, jint size
)
394 jobject obj
= _Jv_AllocObjectNoFinalizer (klass
, size
);
396 // We assume that the compiler only generates calls to this routine
397 // if there really is an interesting finalizer.
398 // Unfortunately, we still have to the dynamic test, since there may
399 // be cni calls to this routine.
400 // Nore that on IA64 get_finalizer() returns the starting address of the
401 // function, not a function pointer. Thus this still works.
402 if (klass
->vtable
->get_finalizer ()
403 != java::lang::Object::class$
.vtable
->get_finalizer ())
404 _Jv_RegisterFinalizer (obj
, _Jv_FinalizeObject
);
408 // A version of the above that assumes the object contains no pointers,
409 // and requires no finalization. This can't happen if we need pointers
411 #ifdef JV_HASH_SYNCHRONIZATION
413 _Jv_AllocPtrFreeObject (jclass klass
, jint size
)
415 _Jv_InitClass (klass
);
417 jobject obj
= (jobject
) _Jv_AllocPtrFreeObj (size
, klass
);
420 // Service JVMPI request.
422 if (__builtin_expect (_Jv_JVMPI_Notify_OBJECT_ALLOC
!= 0, false))
426 event
.event_type
= JVMPI_EVENT_OBJECT_ALLOC
;
428 event
.u
.obj_alloc
.arena_id
= 0;
429 event
.u
.obj_alloc
.class_id
= (jobjectID
) klass
;
430 event
.u
.obj_alloc
.is_array
= 0;
431 event
.u
.obj_alloc
.size
= size
;
432 event
.u
.obj_alloc
.obj_id
= (jobjectID
) obj
;
435 (*_Jv_JVMPI_Notify_OBJECT_ALLOC
) (&event
);
442 #endif /* JV_HASH_SYNCHRONIZATION */
445 // Allocate a new array of Java objects. Each object is of type
446 // `elementClass'. `init' is used to initialize each slot in the
449 _Jv_NewObjectArray (jsize count
, jclass elementClass
, jobject init
)
451 if (__builtin_expect (count
< 0, false))
452 throw new java::lang::NegativeArraySizeException
;
454 JvAssert (! elementClass
->isPrimitive ());
456 // Ensure that elements pointer is properly aligned.
457 jobjectArray obj
= NULL
;
458 size_t size
= (size_t) elements (obj
);
459 size
+= count
* sizeof (jobject
);
461 // FIXME: second argument should be "current loader"
462 jclass klass
= _Jv_GetArrayClass (elementClass
, 0);
464 obj
= (jobjectArray
) _Jv_AllocArray (size
, klass
);
466 jsize
*lp
= const_cast<jsize
*> (&obj
->length
);
468 // We know the allocator returns zeroed memory. So don't bother
472 jobject
*ptr
= elements(obj
);
479 // Allocate a new array of primitives. ELTYPE is the type of the
480 // element, COUNT is the size of the array.
482 _Jv_NewPrimArray (jclass eltype
, jint count
)
484 int elsize
= eltype
->size();
485 if (__builtin_expect (count
< 0, false))
486 throw new java::lang::NegativeArraySizeException
;
488 JvAssert (eltype
->isPrimitive ());
489 jobject dummy
= NULL
;
490 size_t size
= (size_t) _Jv_GetArrayElementFromElementType (dummy
, eltype
);
492 // Check for overflow.
493 if (__builtin_expect ((size_t) count
>
494 (SIZE_T_MAX
- size
) / elsize
, false))
497 jclass klass
= _Jv_GetArrayClass (eltype
, 0);
499 # ifdef JV_HASH_SYNCHRONIZATION
500 // Since the vtable is always statically allocated,
501 // these are completely pointerfree! Make sure the GC doesn't touch them.
503 (__JArray
*) _Jv_AllocPtrFreeObj (size
+ elsize
* count
, klass
);
504 memset((char *)arr
+ size
, 0, elsize
* count
);
506 __JArray
*arr
= (__JArray
*) _Jv_AllocObj (size
+ elsize
* count
, klass
);
507 // Note that we assume we are given zeroed memory by the allocator.
510 jsize
*lp
= const_cast<jsize
*> (&arr
->length
);
517 _Jv_NewArray (jint type
, jint size
)
521 case 4: return JvNewBooleanArray (size
);
522 case 5: return JvNewCharArray (size
);
523 case 6: return JvNewFloatArray (size
);
524 case 7: return JvNewDoubleArray (size
);
525 case 8: return JvNewByteArray (size
);
526 case 9: return JvNewShortArray (size
);
527 case 10: return JvNewIntArray (size
);
528 case 11: return JvNewLongArray (size
);
530 throw new java::lang::InternalError
531 (JvNewStringLatin1 ("invalid type code in _Jv_NewArray"));
534 // Allocate a possibly multi-dimensional array but don't check that
535 // any array length is <0.
537 _Jv_NewMultiArrayUnchecked (jclass type
, jint dimensions
, jint
*sizes
)
539 JvAssert (type
->isArray());
540 jclass element_type
= type
->getComponentType();
542 if (element_type
->isPrimitive())
543 result
= _Jv_NewPrimArray (element_type
, sizes
[0]);
545 result
= _Jv_NewObjectArray (sizes
[0], element_type
, NULL
);
549 JvAssert (! element_type
->isPrimitive());
550 JvAssert (element_type
->isArray());
551 jobject
*contents
= elements ((jobjectArray
) result
);
552 for (int i
= 0; i
< sizes
[0]; ++i
)
553 contents
[i
] = _Jv_NewMultiArrayUnchecked (element_type
, dimensions
- 1,
561 _Jv_NewMultiArray (jclass type
, jint dimensions
, jint
*sizes
)
563 for (int i
= 0; i
< dimensions
; ++i
)
565 throw new java::lang::NegativeArraySizeException
;
567 return _Jv_NewMultiArrayUnchecked (type
, dimensions
, sizes
);
571 _Jv_NewMultiArray (jclass array_type
, jint dimensions
, ...)
574 jint sizes
[dimensions
];
575 va_start (args
, dimensions
);
576 for (int i
= 0; i
< dimensions
; ++i
)
578 jint size
= va_arg (args
, jint
);
580 throw new java::lang::NegativeArraySizeException
;
585 return _Jv_NewMultiArrayUnchecked (array_type
, dimensions
, sizes
);
590 // Ensure 8-byte alignment, for hash synchronization.
591 #define DECLARE_PRIM_TYPE(NAME) \
592 _Jv_ArrayVTable _Jv_##NAME##VTable; \
593 java::lang::Class _Jv_##NAME##Class __attribute__ ((aligned (8)));
595 DECLARE_PRIM_TYPE(byte
);
596 DECLARE_PRIM_TYPE(short);
597 DECLARE_PRIM_TYPE(int);
598 DECLARE_PRIM_TYPE(long);
599 DECLARE_PRIM_TYPE(boolean
);
600 DECLARE_PRIM_TYPE(char);
601 DECLARE_PRIM_TYPE(float);
602 DECLARE_PRIM_TYPE(double);
603 DECLARE_PRIM_TYPE(void);
606 _Jv_InitPrimClass (jclass cl
, char *cname
, char sig
, int len
,
607 _Jv_ArrayVTable
*array_vtable
)
609 using namespace java::lang::reflect
;
611 _Jv_InitNewClassFields (cl
);
613 // We must set the vtable for the class; the Java constructor
615 (*(_Jv_VTable
**) cl
) = java::lang::Class::class$
.vtable
;
617 // Initialize the fields we care about. We do this in the same
618 // order they are declared in Class.h.
619 cl
->name
= _Jv_makeUtf8Const ((char *) cname
, -1);
620 cl
->accflags
= Modifier::PUBLIC
| Modifier::FINAL
| Modifier::ABSTRACT
;
621 cl
->method_count
= sig
;
622 cl
->size_in_bytes
= len
;
623 cl
->vtable
= JV_PRIMITIVE_VTABLE
;
624 cl
->state
= JV_STATE_DONE
;
627 _Jv_NewArrayClass (cl
, NULL
, (_Jv_VTable
*) array_vtable
);
631 _Jv_FindClassFromSignature (char *sig
, java::lang::ClassLoader
*loader
)
636 return JvPrimClass (byte
);
638 return JvPrimClass (short);
640 return JvPrimClass (int);
642 return JvPrimClass (long);
644 return JvPrimClass (boolean
);
646 return JvPrimClass (char);
648 return JvPrimClass (float);
650 return JvPrimClass (double);
652 return JvPrimClass (void);
656 for (i
= 1; sig
[i
] && sig
[i
] != ';'; ++i
)
658 _Jv_Utf8Const
*name
= _Jv_makeUtf8Const (&sig
[1], i
- 1);
659 return _Jv_FindClass (name
, loader
);
664 jclass klass
= _Jv_FindClassFromSignature (&sig
[1], loader
);
667 return _Jv_GetArrayClass (klass
, loader
);
671 return NULL
; // Placate compiler.
677 JvConvertArgv (int argc
, const char **argv
)
681 jobjectArray ar
= JvNewObjectArray(argc
, &StringClass
, NULL
);
682 jobject
*ptr
= elements(ar
);
683 jbyteArray bytes
= NULL
;
684 for (int i
= 0; i
< argc
; i
++)
686 const char *arg
= argv
[i
];
687 int len
= strlen (arg
);
688 if (bytes
== NULL
|| bytes
->length
< len
)
689 bytes
= JvNewByteArray (len
);
690 jbyte
*bytePtr
= elements (bytes
);
691 // We assume jbyte == char.
692 memcpy (bytePtr
, arg
, len
);
694 // Now convert using the default encoding.
695 *ptr
++ = new java::lang::String (bytes
, 0, len
);
697 return (JArray
<jstring
>*) ar
;
700 // FIXME: These variables are static so that they will be
701 // automatically scanned by the Boehm collector. This is needed
702 // because with qthreads the collector won't scan the initial stack --
703 // it will only scan the qthreads stacks.
705 // Command line arguments.
706 static JArray
<jstring
> *arg_vec
;
708 // The primary thread.
709 static java::lang::Thread
*main_thread
;
712 _Jv_ThisExecutable (void)
718 _Jv_ThisExecutable (const char *name
)
722 _Jv_execName
= (char *) _Jv_Malloc (strlen (name
) + 1);
723 strcpy (_Jv_execName
, name
);
727 #ifndef DISABLE_GETENV_PROPERTIES
730 next_property_key (char *s
, size_t *length
)
736 // Skip over whitespace
740 // If we've reached the end, return NULL. Also return NULL if for
741 // some reason we've come across a malformed property string.
747 // Determine the length of the property key.
765 next_property_value (char *s
, size_t *length
)
781 // If we've reached the end, return NULL.
785 // Determine the length of the property value.
804 process_gcj_properties ()
806 char *props
= getenv("GCJ_PROPERTIES");
809 size_t property_count
= 0;
814 // Whip through props quickly in order to count the number of
816 while (p
&& (p
= next_property_key (p
, &length
)))
818 // Skip to the end of the key
821 p
= next_property_value (p
, &length
);
828 // Allocate an array of property value/key pairs.
829 _Jv_Environment_Properties
=
830 (property_pair
*) malloc (sizeof(property_pair
)
831 * (property_count
+ 1));
833 // Go through the properties again, initializing _Jv_Properties
837 while (p
&& (p
= next_property_key (p
, &length
)))
839 _Jv_Environment_Properties
[property_count
].key
= p
;
840 _Jv_Environment_Properties
[property_count
].key_length
= length
;
842 // Skip to the end of the key
845 p
= next_property_value (p
, &length
);
847 _Jv_Environment_Properties
[property_count
].value
= p
;
848 _Jv_Environment_Properties
[property_count
].value_length
= length
;
855 memset ((void *) &_Jv_Environment_Properties
[property_count
],
856 0, sizeof (property_pair
));
860 // Null terminate the strings.
861 while (_Jv_Environment_Properties
[i
].key
)
863 _Jv_Environment_Properties
[i
].key
[_Jv_Environment_Properties
[i
].key_length
] = 0;
864 _Jv_Environment_Properties
[i
++].value
[_Jv_Environment_Properties
[i
].value_length
] = 0;
868 #endif // DISABLE_GETENV_PROPERTIES
872 _Jv_Utf8Const
*void_signature
;
873 _Jv_Utf8Const
*clinit_name
;
874 _Jv_Utf8Const
*init_name
;
875 _Jv_Utf8Const
*finit_name
;
877 bool runtimeInitialized
= false;
881 _Jv_CreateJavaVM (void* /*vm_args*/)
885 if (runtimeInitialized
)
888 runtimeInitialized
= true;
890 PROCESS_GCJ_PROPERTIES
;
894 _Jv_InitializeSyncMutex ();
896 /* Initialize Utf8 constants declared in jvm.h. */
897 void_signature
= _Jv_makeUtf8Const ("()V", 3);
898 clinit_name
= _Jv_makeUtf8Const ("<clinit>", 8);
899 init_name
= _Jv_makeUtf8Const ("<init>", 6);
900 finit_name
= _Jv_makeUtf8Const ("finit$", 6);
902 /* Initialize built-in classes to represent primitive TYPEs. */
903 _Jv_InitPrimClass (&_Jv_byteClass
, "byte", 'B', 1, &_Jv_byteVTable
);
904 _Jv_InitPrimClass (&_Jv_shortClass
, "short", 'S', 2, &_Jv_shortVTable
);
905 _Jv_InitPrimClass (&_Jv_intClass
, "int", 'I', 4, &_Jv_intVTable
);
906 _Jv_InitPrimClass (&_Jv_longClass
, "long", 'J', 8, &_Jv_longVTable
);
907 _Jv_InitPrimClass (&_Jv_booleanClass
, "boolean", 'Z', 1, &_Jv_booleanVTable
);
908 _Jv_InitPrimClass (&_Jv_charClass
, "char", 'C', 2, &_Jv_charVTable
);
909 _Jv_InitPrimClass (&_Jv_floatClass
, "float", 'F', 4, &_Jv_floatVTable
);
910 _Jv_InitPrimClass (&_Jv_doubleClass
, "double", 'D', 8, &_Jv_doubleVTable
);
911 _Jv_InitPrimClass (&_Jv_voidClass
, "void", 'V', 0, &_Jv_voidVTable
);
913 // Turn stack trace generation off while creating exception objects.
914 _Jv_InitClass (&java::lang::VMThrowable::class$
);
915 java::lang::VMThrowable::trace_enabled
= 0;
921 arithexception
= new java::lang::ArithmeticException
922 (JvNewStringLatin1 ("/ by zero"));
925 no_memory
= new java::lang::OutOfMemoryError
;
927 java::lang::VMThrowable::trace_enabled
= 1;
930 LTDL_SET_PRELOADED_SYMBOLS ();
933 _Jv_platform_initialize ();
937 _Jv_GCInitializeFinalizers (&::gnu::gcj::runtime::FinalizerThread::finalizerReady
);
939 // Start the GC finalizer thread. A VirtualMachineError can be
940 // thrown by the runtime if, say, threads aren't available. In this
941 // case finalizers simply won't run.
944 using namespace gnu::gcj::runtime
;
945 FinalizerThread
*ft
= new FinalizerThread ();
948 catch (java::lang::VirtualMachineError
*ignore
)
956 _Jv_RunMain (jclass klass
, const char *name
, int argc
, const char **argv
,
962 java::lang::Runtime
*runtime
= NULL
;
965 #ifdef DISABLE_MAIN_ARGS
966 _Jv_ThisExecutable ("[Embedded App]");
968 #ifdef HAVE_PROC_SELF_EXE
970 sprintf (exec_name
, "/proc/%d/exe", getpid ());
971 _Jv_ThisExecutable (exec_name
);
973 _Jv_ThisExecutable (argv
[0]);
974 #endif /* HAVE_PROC_SELF_EXE */
975 #endif /* DISABLE_MAIN_ARGS */
979 // Set this very early so that it is seen when java.lang.System
982 _Jv_Jar_Class_Path
= strdup (name
);
983 _Jv_CreateJavaVM (NULL
);
985 // Get the Runtime here. We want to initialize it before searching
986 // for `main'; that way it will be set up if `main' is a JNI method.
987 runtime
= java::lang::Runtime::getRuntime ();
989 #ifdef DISABLE_MAIN_ARGS
990 arg_vec
= JvConvertArgv (0, 0);
992 arg_vec
= JvConvertArgv (argc
- 1, argv
+ 1);
995 using namespace gnu::gcj::runtime
;
997 main_thread
= new FirstThread (klass
, arg_vec
);
999 main_thread
= new FirstThread (JvNewStringLatin1 (name
),
1002 catch (java::lang::Throwable
*t
)
1004 java::lang::System::err
->println (JvNewStringLatin1
1005 ("Exception during runtime initialization"));
1006 t
->printStackTrace();
1010 _Jv_AttachCurrentThread (main_thread
);
1011 _Jv_ThreadRun (main_thread
);
1014 int status
= (int) java::lang::ThreadGroup::had_uncaught_exception
;
1015 runtime
->exit (status
);
1019 JvRunMain (jclass klass
, int argc
, const char **argv
)
1021 _Jv_RunMain (klass
, NULL
, argc
, argv
, false);
1026 // Parse a string and return a heap size.
1028 parse_heap_size (const char *spec
)
1031 unsigned long val
= strtoul (spec
, &end
, 10);
1032 if (*end
== 'k' || *end
== 'K')
1034 else if (*end
== 'm' || *end
== 'M')
1036 return (size_t) val
;
1039 // Set the initial heap size. This might be ignored by the GC layer.
1040 // This must be called before _Jv_RunMain.
1042 _Jv_SetInitialHeapSize (const char *arg
)
1044 size_t size
= parse_heap_size (arg
);
1045 _Jv_GCSetInitialHeapSize (size
);
1048 // Set the maximum heap size. This might be ignored by the GC layer.
1049 // This must be called before _Jv_RunMain.
1051 _Jv_SetMaximumHeapSize (const char *arg
)
1053 size_t size
= parse_heap_size (arg
);
1054 _Jv_GCSetMaximumHeapSize (size
);
1060 _Jv_Malloc (jsize size
)
1062 if (__builtin_expect (size
== 0, false))
1064 void *ptr
= malloc ((size_t) size
);
1065 if (__builtin_expect (ptr
== NULL
, false))
1071 _Jv_Realloc (void *ptr
, jsize size
)
1073 if (__builtin_expect (size
== 0, false))
1075 ptr
= realloc (ptr
, (size_t) size
);
1076 if (__builtin_expect (ptr
== NULL
, false))
1082 _Jv_MallocUnchecked (jsize size
)
1084 if (__builtin_expect (size
== 0, false))
1086 return malloc ((size_t) size
);
1090 _Jv_Free (void* ptr
)
1097 // In theory, these routines can be #ifdef'd away on machines which
1098 // support divide overflow signals. However, we never know if some
1099 // code might have been compiled with "-fuse-divide-subroutine", so we
1100 // always include them in libgcj.
1103 _Jv_divI (jint dividend
, jint divisor
)
1105 if (__builtin_expect (divisor
== 0, false))
1106 _Jv_ThrowSignal (arithexception
);
1108 if (dividend
== (jint
) 0x80000000L
&& divisor
== -1)
1111 return dividend
/ divisor
;
1115 _Jv_remI (jint dividend
, jint divisor
)
1117 if (__builtin_expect (divisor
== 0, false))
1118 _Jv_ThrowSignal (arithexception
);
1120 if (dividend
== (jint
) 0x80000000L
&& divisor
== -1)
1123 return dividend
% divisor
;
1127 _Jv_divJ (jlong dividend
, jlong divisor
)
1129 if (__builtin_expect (divisor
== 0, false))
1130 _Jv_ThrowSignal (arithexception
);
1132 if (dividend
== (jlong
) 0x8000000000000000LL
&& divisor
== -1)
1135 return dividend
/ divisor
;
1139 _Jv_remJ (jlong dividend
, jlong divisor
)
1141 if (__builtin_expect (divisor
== 0, false))
1142 _Jv_ThrowSignal (arithexception
);
1144 if (dividend
== (jlong
) 0x8000000000000000LL
&& divisor
== -1)
1147 return dividend
% divisor
;