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405 Commits

Author SHA1 Message Date
Joel Dice
cddea7187d preliminary support for using OpenJDK's class library 
Whereas the GNU Classpath port used the strategy of patching Classpath
with core classes from Avian so as to minimize changes to the VM, this
port uses the opposite strategy: abstract and isolate
classpath-specific features in the VM similar to how we abstract away
platform-specific features in system.h.  This allows us to use an
unmodified copy of OpenJDK's class library, including its core classes
and augmented by a few VM-specific classes in the "avian" package.
 2010-09-10 15:05:29 -06:00
Joel Dice
17c1a552d5 break each Class, Field, and Method into separate classes 
In order to facilitate making the VM compatible with multiple class
libraries, it's useful to separate the VM-specific representation of
these classes from the library implementations.  This commit
introduces VMClass, VMField, and VMMethod for that purpose.
 2010-09-01 10:13:52 -06:00
Joel Dice
fca98df55b fix process=interpret class initialization regression 
A long time ago, I refactored the class initialization code in the VM,
but did not notice until today that it had caused the
process=interpret build to break on certain recursive initializations.
In particular, we were not always detecting when a thread recursively
tried to initialize a class it was already in the process of
initializing, leading to the mistaken assumption that another thread
was initializing it and that we should wait until it was done, in
which case we would wait forever.

This commit ensures that we always detect recursive initialization and
short-circuit it.
 2010-08-04 18:27:54 -06:00
Joel Dice
3018290238 pre-allocate Thread::backupHeap for signal safety 
It's not safe to use malloc from a signal handler, so we can't
allocate new memory when handling segfaults or Thread.getStackTrace
signals.  Instead, we allocate a fixed-size backup heap for each
thread ahead of time and use it if there's no space left in the normal
heap pool.  In the rare case that the backup heap isn't large enough,
we fall back to using a preallocated exception without a stack trace
as a last resort.
 2010-06-19 16:40:21 -06:00
JET
c666ab58e3 Improved (should now be complete) Unicode support (UTF-8 for *nix and UTF-16 for Windows). 2010-04-20 10:03:07 -06:00
Joel Dice
c9b9db1621 reimplement Java object monitors (second try) 
See commit 8120bee4dc for the original
problem description and solution.  That commit and a couple of related
ones had to be reverted when we found they had introduced GC-safety
regressions leading to crashes.

This commit restores the reverted code and fixes the regressions.
 2010-02-04 17:56:21 -07:00
Joel Dice
48834be209 revert recent commits to reimplement Java object monitors 
We're seeing race conditions which occasionally lead to assertion
failures and thus crashes, so I'm reverting these changes for now:

29309fb414
e92674cb73
8120bee4dc
 2010-02-04 08:18:39 -07:00
Joel Dice
8120bee4dc reimplement Java object monitors to avoid running out of OS handles 
Due to SWT's nasty habit of creating a new object monitor for every
task added to Display.asyncExec, we've found that, on Windows at
least, we tend to run out of OS handles due to the large number of
mutexes we create between garbage collections.

One way to address this might be to trigger a GC when either the
number of monitors created since the last GC exceeds a certain number
or when the total number of monitors in the VM reaches a certain
number.  Both of these risk hurting performance, especially if they
force major collections which would otherwise be infrequent.  Also,
it's hard to know what the values of such thresholds should be on a
given system.

Instead, we reimplement Java monitors using atomic compare-and-swap
(CAS) and thread-specific native locks for blocking in the case of
contention.  This way, we can create an arbitrary number of monitors
without creating any new native locks.  The total number of native
locks needed by the VM is bounded instead by the number of live
threads plus a small constant.

Note that if we ever add support for an architecture which does not
support CAS, we'll need to provide a fallback monitor implementation.
 2010-02-01 18:40:47 -07:00
Joel Dice
805d1d13d8 mark system classloader initialized when using GNU Classpath to avoid security exceptions; only look for field in interfaces after looking in class and superclasses 2009-12-24 17:57:07 -07:00
Joel Dice
f588a62ae3 fix Classpath 0.98 compatibility issues 2009-12-22 21:34:04 -07:00
Joel Dice
2b4361c060 fix GNU Classpath build 2009-12-05 19:40:46 -07:00
Joel Dice
851187f0ce refine memory barrier implementation and usage 2009-11-30 15:38:16 +00:00
Joel Dice
0b09c6aa30 avoid busy wait when entering "exclusive" state 2009-11-29 16:53:05 -07:00
Joel Dice
6d9e1270ca fix race conditions in atomic operations 2009-11-29 09:08:07 -07:00
Joel Dice
1558b85acf second attempt to fix "idle to active" fast path 
If another thread succeeds in entering the "exclusive" state while we
use the fast path to transition the current thread to "active", we
must switch back to "idle" temporarily to allow the exclusive thread a
chance to continue, and then retry the transition to "active" via the
slow path.
 2009-11-28 15:35:15 -07:00
Joel Dice
3418a8bcbe fix race condition introduced in previous commit 2009-11-28 15:24:02 -07:00
Joel Dice
75934c8342 provide fast paths for common thread state transitions 
These paths reduce contention among threads by using atomic operations
and memory barriers instead of mutexes where possible.  This is
especially important for JNI calls, since each such call involves two
state transitions: from "active" to "idle" and back.
 2009-11-28 15:01:54 -07:00
Joel Dice
1a63b72b41 clean up float-vs.-int tracking in constant pools 2009-10-17 20:11:03 -06:00
Joel Dice
325f93b4d1 Merge branch 'master' into wip 
Conflicts:

	src/compile.cpp
	src/compiler.cpp
	src/machine.h
	src/x86.cpp
 2009-09-20 15:43:32 -06:00
Joel Dice
953cb69e5e move proxy and annotation code from C++ to Java 
This allows code shrinkers to remove it if it's not used by the application.
 2009-09-19 16:21:15 -06:00
Joel Dice
1a2eb3836c Merge branch 'master' of oss.readytalk.com:/var/local/git/avian 2009-09-18 18:01:57 -06:00
Joel Dice
7aa906d97b support runtime-visible annotations and java.lang.reflect.Proxy 2009-09-18 18:01:54 -06:00
Joel Dice
d0f8889e27 fix GC safety bugs in parseMethodTable and makeArrayClass 2009-09-18 12:20:35 -06:00
Joel Dice
b645c284b5 fix memory leak in debug build 2009-09-17 21:36:52 -06:00
Joel Dice
fcc4ff93e0 remove debug logging 2009-09-17 21:22:47 -06:00
Joel Dice
6519047342 fix bootimage build 2009-09-03 09:06:04 -06:00
Joel Dice
84ac2e417d follow reference pointer before using in in refrenceTargetUnreachable in case it points to a moved object 2009-09-01 18:32:21 -06:00
Joel Dice
4f794f533e fix handling of reachable, moved weak references in postVisit 2009-09-01 17:23:30 -06:00
Joel Dice
73dc058c14 implement StackTraceElement.getFileName properly 2009-08-27 16:28:44 -06:00
Joel Dice
1a0eef7e2d add support for building with MSVC on Windows 2009-08-26 18:26:44 -06:00
Joel Dice
4297fa04b3 run java finalizers in a separate thread to guarantee no application locks are held when doing so 2009-08-24 17:51:31 -06:00
Joel Dice
a56c1d8765 fix GC-safety bug in resolveSpec 2009-08-20 12:37:03 -06:00
Joel Dice
6196f61938 clear Thread::javaThread before entering zombie state, since clearing it in Thread::dispose is too late - the reference may already be invalid since we don't visit GC roots for zombie threads 2009-08-20 08:49:01 -06:00
Joel Dice
c4b5ecec90 implement Runtime.addShutdownHook and Thread.setDaemon; avoid segfaults due to an application calling e.g. CallStaticBooleanMethod when it really meant CallStaticVoidMethod 2009-08-19 14:27:03 -06:00
Joel Dice
01dcb1661b don't resolve all constant pool entries in linkClass - just the field and method specs 2009-08-18 15:27:21 -06:00
Joel Dice
c4edabdc02 implement ClassLoader.resolveClass and ensure class is linked in e.g. Class.getMethods; minor bugfixes 2009-08-18 14:26:28 -06:00
Joel Dice
7fcbf9d85c fix reading 2-byte UTF-8 constants 2009-08-14 08:52:31 -06:00
Joel Dice
3facd3f735 treat SoftReferences as WeakReferences; do vtable or interface table lookups as necessary in MyProcessor::invoke; various bugfixes 2009-08-13 09:17:05 -06:00
Joel Dice
db58097165 re-enable finalization 2009-08-11 10:04:41 -06:00
Joel Dice
fb5b0570c3 replace slashes with dots in class name before passing it to ClassLoader.loadClass 2009-08-11 09:20:49 -06:00
Joel Dice
28b5c46a0b fix GC safety bug in makeNewGeneral 2009-08-10 17:35:44 -06:00
Josh warner
1d3ef1fc43 Merge branch 'master' of git://oss.readytalk.com/avian, fixed problems that occured in broader testing 
Conflicts:
	src/compile.cpp
	src/compiler.cpp
	src/powerpc.cpp
	src/x86.S
	src/x86.cpp
 2009-08-10 13:20:23 -06:00
Joel Dice
001000364d add classloader parameter to functions which may directly or indirectly load classes; include methods inherited from interfaces (but not explicitly declared) in method tables and virtual tables of abstract classes 2009-08-10 07:56:16 -06:00
Joel Dice
d5f4811b43 check for exception after calling resolveClass in parseInterfaceTable 2009-08-04 08:50:04 -06:00
Joel Dice
f8bf83bfec fix recent regression in findInHierarchy 2009-08-04 08:42:16 -06:00
Joel Dice
cb563f76e1 check superinterfaces when looking up methods and fields 2009-08-03 16:16:41 -06:00
Joel Dice
ad0592df6f print class name properly when throwing NoSuchMethodError 2009-07-29 10:32:16 -06:00
Joel Dice
7b183e8f4e don't run Java finalizers when exiting the VM 2009-07-28 16:58:01 -06:00
Joel Dice
27d863790c Merge branch 'win64' into gnu 
Conflicts:

	makefile
	src/compile-x86.S
	src/x86.S
	src/x86.cpp
 2009-07-25 20:48:36 -06:00
Joel Dice
3787985b25 implement basic finalization support 
This implementation does not conform to the Java standard in that
finalize methods are called from whichever thread happens to be garbage
collecting, and that thread may hold locks, whereas the standard
guarantees that finalize will be run from a thread which holds no locks.
Also, an object will never be finalized more than once, even if its
finalize method "rescues" (i.e. makes reachable) the object such that it
might become unreachable a second time and thus a candidate for
finalization once more.  It's not clear to me from the standard if this
is OK or not.

Nonwithstanding the above, this implementation is useful for "normal"
finalize methods which simply release resources associated with an
object.
 2009-07-21 18:57:55 -06:00
Joel Dice
514d0bf7e5 fix deadlocks and other misbehaviors in class initialization code 2009-07-20 14:12:38 -06:00
Joel Dice
138f8444df Merge branch 'master' into gnu 2009-07-20 08:27:33 -06:00
Joel Dice
8662361f71 Merge branch 'master' of oss.readytalk.com:/var/local/git/avian 2009-07-20 08:27:17 -06:00
Joel Dice
47ab980550 fix thread heap overflow corner case in allocate3 
The previous code relied on the invalid assumption that the thread-local
heaps for all threads would have been cleared immediately following a
garbage collection.  However, the last thing the garbage collection
function does is run finalizers which may allocate new objects.  This
can lead allocate3 to call allocateSmall with a size which is too large
to accomodate, overflowing the heap.

The solution is to iterate until there really is enough room for the
original allocation request.
 2009-07-17 19:37:46 -06:00
Joel Dice
3e4336eba4 rearrange finalization code in collect to avoid inifinite recursion when finalizer allocates memory 2009-07-17 09:29:24 -06:00
Joel Dice
9c9eb86b2f fix deadlock in allocate3 when another thread wants to enter the exclusive state 2009-07-16 11:51:35 -06:00
Josh warner
9681a8a1ff added debugging method 'vmAddressFromLine' 2009-06-11 09:44:37 -06:00
Joel Dice
f239424930 implement NewDirectByteBuffer etc. properly when building against Classpath; call JNI_OnLoad if found in newly-loaded libraries 2009-06-10 18:15:00 -06:00
Joel Dice
c1ca653fef intern CONSTANT_Utf8 pool entries to save memory and reduce bootimage size 2009-06-06 18:26:23 -06:00
Joel Dice
ac34bc072c remove obsolete todo comments 2009-06-06 14:58:06 -06:00
Joel Dice
0857f53651 more progress on GNU Classpath compatibility 2009-06-04 17:21:42 -06:00
Joel Dice
98be5c509e more progress towards GNU Classpath compatibility 2009-06-03 16:17:55 -06:00
Joel Dice
ba5105c374 throw NoSuchMethodError in resolveMethod if method not found 2009-06-02 18:55:12 -06:00
Joel Dice
398dec58bb GC bugfixes 2009-05-17 17:43:48 -06:00
Joel Dice
8cb59c9d4c various bugfixes to get Continuations test working 2009-05-16 02:03:03 -06:00
Joel Dice
eb3bd25aa1 code cleanup and build fixes 2009-05-04 19:04:17 -06:00
Joel Dice
0cd4eb2655 early sketch of continuation support 2009-05-03 14:57:11 -06:00
Joel Dice
d1018bf078 update copyright years 2009-03-15 12:02:36 -06:00
Joel Dice
6e6035505c zero heap space ahead of time when allocating raw storage and garbage collecting, not when allocating individual objects 
This helps us support the Java Memory Model without adding a memory
barrier to every object allocation.  It's also potentially more
efficient, since we zero out each heap segment all at once instead of
bit-by-bit with each object allocation.
 2009-03-03 20:05:48 -07:00
Joel Dice
2ca8132d97 implement support for volatile fields 2009-03-02 20:18:15 -07:00
Joel Dice
a1ec71423e Merge branch 'master' into powerpc 
Conflicts:

	makefile
	src/assembler.h
	src/binaryToMacho.cpp
	src/compile.cpp
	src/compiler.cpp
	src/x86.cpp
 2009-02-09 16:22:01 -07:00
Joel Dice
54ad7c4e98 tolerate ConstantValue attributes on non-static fields, since the compiler ensures that they are initialized in any constructors for that class (i.e., the VM does not need to do anything special to initialize them) 2009-01-10 12:25:52 -07:00
Joel Dice
58a90f2b84 fix regressions for non-bootimage case 2008-12-03 19:09:57 -07:00
Joel Dice
25ade1484a lots of bugfixes and refactoring 2008-12-01 19:38:00 -07:00
Joel Dice
eaf30eb909 fix static class initialization when using a boot image 2008-11-29 21:58:09 -07:00
Joel Dice
e44f326377 various bugfixes 2008-11-29 18:39:42 -07:00
Joel Dice
0ec5ad3701 update makefile to optionally build and use a boot image; various bugfixes 2008-11-29 16:08:14 -07:00
Joel Dice
0ef2ee1d02 refactor Segment::Map to support map data which is not allocated as part of the segment data 2008-11-29 13:37:03 -07:00
Joel Dice
702525fd32 support immortal heap area in heap.cpp 2008-11-28 19:31:06 -07:00
Joel Dice
4d1af63ed2 initial work on booting from boot image 2008-11-28 15:02:45 -07:00
Joel Dice
61ecb56e21 Merge branch 'master' of oss:/var/local/git/avian into powerpc 2008-11-25 16:19:21 -07:00
Joel Dice
035aa0ecd4 Merge branch 'master' of oss.readytalk.com:/var/local/git/avian into bootimage 
Conflicts:

	src/compile.cpp
	src/machine.h
	src/util.h
 2008-11-23 17:02:34 -07:00
Joel Dice
207f093464 never trigger a GC due to an immortal allocation 2008-11-23 11:48:39 -07:00
Joel Dice
fb9b2bf173 avoid creating garbage when iterating over hashmaps 2008-11-22 16:38:41 -07:00
Joel Dice
8a7852172e increase heap pool size and fixed footprint threshold constants based on performance profiling and experimentation 2008-11-22 14:47:18 -07:00
Joel Dice
6500f1eff6 initial work to support boot image creation and use 2008-11-21 16:20:35 -07:00
Joel Dice
c80eb51c17 Merge branch 'master' into powerpc 
Conflicts:

	makefile
	src/assembler.h
	src/compile.cpp
	src/compiler.cpp
	src/compiler.h
	src/finder.cpp
 2008-11-11 08:21:48 -07:00
Joel Dice
4d613f404f use dbghelp.dll to generate crash dump file on Windows XP and later 
The dump is written to the directory specified via the avian.crash.dir
system property if that property is set and is not written otherwise.
 2008-10-27 15:13:27 -06:00
Joel Dice
003afdc918 fix heap dump facility to visit all roots 2008-10-24 18:48:10 -06:00
Joel Dice
6a5116e7a7 implement primitive heap dump facility for memory profiling, accessible via Runtime.dumpHeap 
The proper way to do this is to implement a subset of JVMTI, but this
will do the job for now.
 2008-10-21 17:38:20 -06:00
Joel Dice
07daa9be51 free properties array in Machine::dispose 2008-09-30 17:03:13 -06:00
Joel Dice
ac988f7a0d fix static field lookup from interfaces 2008-09-26 18:17:13 -06:00
Joel Dice
1657fb794c support logging addresses and names of JIT-compiled methods to a file specified via a system property 2008-09-19 11:34:37 -06:00
Joel Dice
4a022147cd Merge branch 'master' of oss.readytalk.com:/var/local/git/avian into powerpc 2008-08-16 12:56:41 -06:00
Joel Dice
c8cc7d931b maintain a table to look up methods called via JNI 
This simplifies the JNI implementation for looking up methods.  It also
fixes a bug where an applications calls GetStaticMethodID with class A
and then calls CallStatic<Type>Method with class B which extends A.  The
old code would look in the wrong method table and thus call the wrong
method.
 2008-08-15 12:32:33 -06:00
Joel Dice
22a5707966 remove obsolete code from postVisit; upgrade assert to expect for debugging 2008-08-11 15:16:55 -06:00
Joel Dice
4299063be9 Merge branch 'master' of oss:/var/local/git/avian into powerpc 2008-07-23 17:58:36 -06:00
Joel Dice
522e2ebc9f fix bug in debug helper function 2008-07-21 14:41:29 -06:00
Joel Dice
6e3bbd3c5f Merge branch 'master' of oss:/var/local/git/avian into powerpc 2008-07-17 17:34:52 -06:00
Zsombor
0e539615e7 add Thread.name field 2008-07-13 18:21:04 -06:00
Joel Dice
2343483d8e Merge branch 'master' of oss:/var/local/git/avian into powerpc 2008-07-13 12:47:49 -06:00
Joel Dice
e31f795661 include Thread::backupHeapIndex in heap footprint calculation 2008-07-11 19:21:53 -06:00
Joel Dice
23043d140f snapshot 2008-07-05 14:21:13 -06:00
Joel Dice
61e65098df use virtual dispatch when calling Thread.run from VM 2008-06-25 10:28:11 -06:00
Eric Scharff
2bfe6f0d13 Ensure we align the stack before any time we might enter a C function from 
generated code
 2008-06-16 10:55:29 -06:00
Joel Dice
7dcd109567 assert thread is in exclusive or exit state in removeMonitor 2008-05-05 07:07:59 -06:00
Joel Dice
ebb498587f enter exclusive state in collect function instead of requiring caller to enter that state before calling 2008-05-05 07:04:53 -06:00
Joel Dice
d072b71c39 nth attempt to clean up MyStackWalker 2008-04-23 10:33:31 -06:00
Joel Dice
df5258d1d8 various bugfixes concerning Thread.getStackTrace 2008-04-21 16:36:13 -06:00
Joel Dice
0d3e6b7793 simplify memory allocation interfaces 2008-04-13 12:15:04 -06:00
Joel Dice
04c3abc967 fix broken thread tree traversal in machine.cpp 2008-04-11 16:48:05 -06:00
Joel Dice
2d6eebf4d1 more progress on general stack tracing 2008-04-09 13:08:13 -06:00
Joel Dice
3915371897 Merge branch 'master' of oss:/var/local/git/avian into dynamic 2008-04-02 06:58:19 -06:00
Joel Dice
6379f50d35 fix thinko in stringChars 2008-04-02 06:57:25 -06:00
Joel Dice
0aebe334b3 Merge branch 'master' of oss:/var/local/git/avian into dynamic 2008-04-01 17:25:18 -06:00
Joel Dice
08b401f337 implement GetStringLength, GetStringChars, and ReleaseStringChars 2008-04-01 17:24:43 -06:00
Joel Dice
1c49b3bc1b Merge branch 'master' of oss:/var/local/git/avian into dynamic 2008-04-01 11:38:15 -06:00
Joel Dice
907382bcee fix broken field alignment in parseFieldTable which caused longs to overlap other fields on 32-bit systems in certain cases 2008-03-31 18:34:57 -06:00
Joel Dice
74295bb707 interpret avian.bootstrap property as a complete file name 2008-03-31 12:57:49 -06:00
Joel Dice
357bd29460 support building Avian as a self-contained dynamic library 2008-03-30 21:43:43 -06:00
Joel Dice
9cb21a29a6 fix handling of interface vtables for abstract classes 2008-03-21 17:42:36 -06:00
Joel Dice
56389dd2e1 don't populate interface vtables for abstract classes 2008-03-20 18:37:21 -06:00
Joel Dice
2edaa82801 prepend copyright notice and license to all source files; add license.txt and readme.txt 2008-02-19 11:06:52 -07:00
Joel Dice
d693393293 remove Machine::lastLibrary and rename firstLibrary to libraries 2008-01-29 08:19:15 -07:00
Joel Dice
008ac07079 refactor native method resolution to be simpler and more robust 2008-01-28 10:27:02 -07:00
Joel Dice
de6a1ded92 ensure that we populate the interface vtables of a class which does not declare any new virtual methods but does implement new interfaces relative to its superclass 2008-01-28 08:12:06 -07:00
Joel Dice
e403a625d1 second try to fix library symbol lookup 2008-01-25 16:38:26 -07:00
Joel Dice
35ada0ea65 search libraries for symbols in the order they are loaded 2008-01-25 16:25:30 -07:00
Joel Dice
73ba3fcef7 fix build breakage in stress mode 2008-01-23 09:55:29 -07:00
Joel Dice
125fe3440e allow java.lang.Object with no virtual methods, which may occur due to code shrinking 2008-01-21 16:42:12 -07:00
Joel Dice
ee60d48cfe fix subtle bug in hashMapInsert which caused us to update the old array previously associated with the hash map, whereas a GC causes the table to be resized when a weak reference is removed and thus a new array used 2008-01-19 13:12:16 -07:00
Joel Dice
d97fab6036 comment out some debugging log messages 2008-01-18 18:49:30 -07:00
Joel Dice
35160e46d8 don't include embedded boot classpath in libvm.a, only the executable 2008-01-18 17:54:36 -07:00
Joel Dice
e2fc8a62c7 permit state transitions from idle to exclusive 2008-01-17 18:47:32 -07:00
Joel Dice
9ad00d0ea3 remove unused function and add some thread state assertions 2008-01-17 18:27:44 -07:00
Joel Dice
f5f7b01689 remove extern "C" modifier from vmPrintTrace definition 2008-01-16 10:48:14 -07:00
Joel Dice
4571e75f7a add vmPrintTrace function which can print a Java stack trace without allocating memory 2008-01-16 10:30:12 -07:00
Joel Dice
2f83468b80 remove context argument from Allocator::tryAllocate and Allocator::allocate, since we aren't using it after all 2008-01-14 16:37:24 -07:00
Joel Dice
0298865efa refactor memory allocation to allow better detection and handling of low-memory conditions 2008-01-13 15:05:08 -07:00
Joel Dice
8e5ce11047 refactor memory management code 
We now support immortal objects, which the GC will scan for references
but not consider for collection.  On x86_64, we allocate JIT code memory
via mmap, which lets us map memory into the bottom 2GB of the address
space, ensuring that 32-bit relative jumps and calls work.
 2008-01-09 18:20:36 -07:00
Joel Dice
e4fbadd051 JIT-related GC safety fixes 2007-12-16 15:41:07 -07:00
Joel Dice
12e10b57f5 JIT bugfixes and new instructions; exception propagation and stack traces are functional but not yet entirely correct 2007-12-14 11:27:56 -07:00
Joel Dice
fdeafe46fd 2+2 test now works with new JIT code 2007-12-11 14:26:59 -07:00
Joel Dice
d8374a76e2 check again for entry in monitorMap after entering the exclusive state in objectMonitor() in case another thread beat us to creating a monitor for the object 2007-11-29 08:03:45 -07:00
Joel Dice
5b6a63cbca avoid uninitialized value warnings 2007-11-27 16:04:15 -07:00
Joel Dice
5fa7b074b4 various threading bugfixes 2007-11-27 15:23:00 -07:00
Joel Dice
0bbe9489a7 flesh out call tracing in new JIT code 2007-11-26 16:15:53 -07:00
Joel Dice
49ed41daa0 refactor stack walking interface in processor.h and sketch stack walking implementation in compile2.cpp 2007-11-25 16:00:55 -07:00
Joel Dice
a017dab73a handle weak maps properly in hashMapResize, hashMapRemove, etc.; move Processor::parameterFootprint() into machine.h/machine.cpp 2007-11-20 15:24:02 -07:00
Joel Dice
313816ee34 minor tweaks to reduce memory usage 2007-11-06 08:29:05 -07:00
Joel Dice
fe0e542afe finish support for inline vtables in class objects; convert constant pools from arrays to singletons to reduce memory footprint 2007-11-05 14:40:17 -07:00
Joel Dice
f1bc2be9f9 if we can't resolve a bootstrap class in isAssignableFrom(), we swallow the exception and return false 2007-11-05 09:08:08 -07:00
Joel Dice
16ea75f91c preserve vm flags of bootstrap class (except for BootstrapFlag) in updateBootstrapClass() 2007-11-05 08:39:48 -07:00
Joel Dice
19d36cc463 implement impdep1 instruction for lazily loading bootstrap classes 2007-11-05 08:29:43 -07:00
Joel Dice
6c0e0c37e2 snapshot 2007-11-05 07:28:46 -07:00
Joel Dice
514be2dc87 snapshot 2007-11-04 16:10:33 -07:00
Joel Dice
94e9bd0fd2 clean up bootstrap type generation to eliminate redundancy (broken) 2007-11-04 14:15:28 -07:00
Joel Dice
7dfbd87a40 bugfixes 2007-11-02 15:42:19 -06:00
Joel Dice
e820b6a8a4 sketch of singleton support 2007-11-02 15:08:14 -06:00
Joel Dice
80775f6cf8 initial sketch of singleton support 2007-11-02 08:15:06 -06:00
Joel Dice
7f1837fecd move fixed object (mark and sweep) support into heap.cpp and refine algorithms for determining when and how much to GC 2007-10-28 13:14:53 -06:00
Joel Dice
60072b9fdc implement fixed object support 2007-10-27 19:54:30 -06:00
Joel Dice
fcc50f4da6 abort if vsnprintf() overflows in makeByteArray 2007-10-26 18:03:28 -06:00
Eric Scharff
6342fc7ccb Read 2- and 3-byte UTF8 constants gracefully (but not correctly) 2007-10-25 17:58:53 -06:00
Joel Dice
20cc788fa4 support classloading from jar files compiled into the executable 2007-10-25 16:06:05 -06:00
Joel Dice
d4656e8a52 handle ConstantValue attributes for static fields 2007-10-25 13:20:39 -06:00
Joel Dice
b12b779c7f add support for passing properties to the VM via JNI; use vm.builtins property to specify builtin libraries 2007-10-25 12:33:43 -06:00
Joel Dice
1c90ea5fd6 rewrite main.cpp to use jni.h interface for creating the VM and invoking the main method of the specified class 2007-10-25 09:04:13 -06:00
Joel Dice
92d61c1ba2 superficial tweak 2007-10-24 17:05:14 -06:00
Joel Dice
2c2718fdb5 primitive parseUtf8() implementation to ensure we handle null characters correctly, at least 2007-10-24 15:05:15 -06:00
Joel Dice
ac4b28ffe6 refactor build system to support cross-compiling 2007-10-22 14:56:27 -06:00
Joel Dice
3e84d4438a revise signatures of mark() and set() to take a target object and offset instead of a target object reference, paving the way for immovable objects 2007-10-22 11:22:30 -06:00
Joel Dice
29b5e81aed align fields naturally in parseFieldTable 2007-10-16 19:20:36 -06:00
Joel Dice
5f6258045e implement various floating point instructions; fix Floats.java to actually test something 2007-10-15 13:12:38 -06:00
Joel Dice
659555b6ce fix use of uninitialized values at root thread creation time when running in stress mode; allocate Thread::defaultHeap on the heap instead of as part of the Thread structure 2007-10-13 19:18:25 -06:00
Joel Dice
96c3b2b6a7 superficial code cleanup 2007-10-12 18:22:52 -06:00
Eric Scharff
05321e97f9 If you pass 0 to printTrace, it will print the stack trace of a null 
pointer exception.  This dramatically simplifies debugging in GDB:

p vm::printTrace(t, 0)
 2007-10-12 14:54:37 -06:00
Joel Dice
349fe47c8d JIT GC progress; fix interface method lookup bug 2007-10-12 11:56:43 -06:00
Joel Dice
d5a8193614 lots of work on stack mapping, plus a couple of bugfixes 2007-10-11 16:43:03 -06:00
Joel Dice
feeaecbfd8 more work on JIT unwinding 2007-10-04 16:41:19 -06:00
Joel Dice
404d996c1e snapshot 2007-10-03 18:41:54 -06:00
Joel Dice
45dc118ab9 invoke native methods using a common routine, instead of compiling code specific to each method 2007-10-01 09:19:15 -06:00
Joel Dice
7ecb5b9c30 fixes for various recent regressions 2007-09-30 10:32:17 -06:00
Joel Dice
8ae36c05b7 lots of new instructions and bugfixes 2007-09-29 20:48:27 -06:00
Joel Dice
569cfa9e07 implement more instructions; various bugfixes 2007-09-29 14:24:14 -06:00
Joel Dice
79603e284d sketch of Compiler.compileNative() and ifnull instruction implementation 2007-09-28 17:41:03 -06:00
Joel Dice
d1681c0918 add a few more instructions to compile.cpp and fix bugs in others; invokespecial and invokevirtual are working 2007-09-27 16:20:54 -06:00
Joel Dice
2f3f97d550 clean up compile.cpp and support both x86_64 and i386; further refactoring to support JIT 2007-09-26 17:23:03 -06:00
Joel Dice
e7c8fb645a JIT works for Instructions.java 2007-09-25 17:53:11 -06:00
Joel Dice
1c90708abf bugfixes for recent refactoring effort 2007-09-24 07:46:48 -06:00
Joel Dice
8d983c8a39 refactoring effort to pave the way for JIT compilation 2007-09-23 19:39:03 -06:00
Joel Dice
cd990969cd fix allocation of large objects in allocate2(); remove references to jscheme and SWT in makefile and test directory 2007-09-19 08:16:49 -06:00
Joel Dice
49a3c08cc9 use dlopen()/dlsym() to resolve builtin JNI methods 2007-09-18 17:30:09 -06:00
Joel Dice
b88438d2fd sketch of JAR support in Finder 2007-09-16 18:13:36 -06:00
Joel Dice
aec0c29084 fix math bug in parseFieldTable which lead to incorrect objectMasks 2007-09-15 11:22:22 -06:00
Joel Dice
b0926e71fb fix math errors when walking object map in collect()::Client::walk() 2007-09-13 16:45:09 -06:00
Joel Dice
542888a1d3 bugfixes 2007-09-12 21:15:16 -06:00
Joel Dice
7cb3a30a91 sketch of Runtime.exec() and Calendar; misc bugfixes 2007-09-12 18:21:37 -06:00
Joel Dice
e5987f2a22 JNIEnv and JavaVM method implementations 2007-09-10 17:33:58 -06:00
Joel Dice
a9f9755221 more JNIEnvVTable entries 2007-09-07 17:20:21 -06:00