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
f5490b800a
Merge branch 'master' of oss.readytalk.com:/var/local/git/avian
2009-11-28 11:18:13 -07:00
Joel Dice
c615db31fb
refine move cost calculation to avoid indirect moves (e.g. memory to memory)
2009-11-28 18:17:17 +00:00
Joel Dice
5ead8fab17
refactor code responsible for moving data in the compiler
...
This is partially to address incorrect code generation for 64-bit
floating-point values on x86_32 and partially to reduce unnecessary
moves.
2009-11-27 21:15:12 -07:00
Joel Dice
bd72745ff9
fix off-by-one error in intrinsic()
2009-11-27 21:01:27 -07:00
Joel Dice
f6a52e260b
specify CONTEXT::ContextFlags before calling GetThreadContext
...
Previously, we assumed that the "context" parameter to
GetThreadContext was only an output parameter, but it actually uses at
the value of CONTEXT::ContextFlags on entry to decide what parts of
the structure to fill in. We were getting lucking most of the time,
because whatever garbage was on the stack at that location had the
necessary bits set. When we weren't so lucky, we got all zeros for
the register values which sometimes lead to a crash depending on the
state of the thread being examined.
2009-11-24 19:16:22 -07:00
Joel Dice
9f14d63592
initialize MyProcessor::getStackTrace::Visitor::trace in case visit is never called
2009-11-24 19:15:27 -07:00
Stan
728a6ba706
use MapViewOfFile instead of mmap on Windows
2009-11-24 08:24:37 -07:00
Joel Dice
a0d763d871
use cmpxchgq for 64-bit operands in atomicCompareAndSwap
2009-11-20 15:17:35 -07:00
Joel Dice
2276eece0e
support atomicCompareAndSwap on powerpc for GCC versions prior to 4.1
2009-11-20 15:14:27 -07:00
Joel Dice
b83314e884
fix powerpc build
2009-11-20 10:42:02 -07:00
Joel Dice
15eada93ed
implement atomicCompareAndSwap on x86_32 for GCC versions prior to 4.1 and for MSVC
2009-11-20 10:40:01 -07:00
Joel Dice
e91157a390
avoid acquiring a mutex recursively in markDirty
2009-11-19 19:41:49 -07:00
Joel Dice
5f5cc57d12
only use atomic operations if the compiler supports them
2009-11-19 19:32:54 -07:00
Joel Dice
fdde34694c
use atomic operations in MyHeap::mark to avoid need for mutex
2009-11-19 18:13:00 -07:00
Joel Dice
c711ac5701
return null from NewString[UTF] if the char* parameter is null
2009-11-18 11:01:47 -07:00
Joel Dice
5b8a7ca566
temporarily disable use of SSE on 32-bit systems until a bug involving memory<->SSE-register moves is fixed
2009-11-04 15:16:06 +00:00
Joel Dice
fb5796b740
don't use SSE for long-to-double conversion on 32-bit systems
2009-11-04 00:02:38 +00:00
Joel Dice
82d2be8e71
implement JavaVM::AttachCurrentThreadAsDaemon
2009-11-03 14:52:14 -07:00
Joel Dice
4566e7a7dd
avoid infinite loop in deadWord
2009-11-03 14:14:27 -07:00
Joel Dice
ed4206b06d
fix order-of-operations bug in compile loop
...
The code was capturing branch snapshots too early - before the call to
populateSources which might perform further moves.
2009-11-02 21:11:39 -07:00
Joel Dice
e825da60aa
update continuation constants to reflect new field offsets
2009-10-30 00:45:46 +00:00
jet
d901653979
Merge branch 'master' into wip
...
Conflicts:
src/compile.cpp
2009-10-29 14:23:20 -06:00
jet
d3d228e69b
moduloInt + arm work
2009-10-29 14:14:44 -06:00
jet
e00fc5d91a
ARM port work
2009-10-29 10:12:30 -06:00
Joel Dice
3c893b2ee3
Merge commit 'origin/master' into wip
2009-10-27 10:36:19 -06:00
Joel Dice
1fd00dd55d
revert all __attribute__ ((externally_visible)) changes because it's not clear yet how to detect whether it's supported
2009-10-27 10:35:26 -06:00
Joel Dice
e3b21e80ba
Merge commit 'origin/master' into wip
2009-10-27 09:41:20 -06:00
Joel Dice
f57d80f1b7
ammend recent commit to avoid using __attribute__ ((externally_visible)) when it is not available (second try)
2009-10-27 09:41:00 -06:00
Joel Dice
8bf3487ff1
Merge commit 'origin/master' into wip
2009-10-27 09:35:13 -06:00
Joel Dice
51fcf1ef74
ammend recent commit to avoid using __attribute__ ((externally_visible)) when it is not available
2009-10-27 09:34:46 -06:00
Joel Dice
2efff818ea
Merge commit 'origin/master' into wip
2009-10-27 09:17:54 -06:00
Joel Dice
4570b86da0
add __attribute__ ((externally_visible)) to EXPORT macros to facilitate whole-program optimization using GCC 4.5
2009-10-27 09:16:08 -06:00
Joel Dice
c8d5c1faed
visit all frame locations in resolveOriginalSites
...
Previously, we only visited frame locations containing values, but
this invited the possibility of reusing the same site for two
locations in some cases.
2009-10-26 17:59:20 -06:00
Joel Dice
3b4be3decd
defer to helper thunk for frem and drem
2009-10-24 19:29:20 -06:00
Joel Dice
95c3f37bfb
fix various bugs involving doubles on 32-bit systems
2009-10-24 17:18:56 -06:00
Joel Dice
064ad572bc
use truncation, not rounding in float2Int instructions
2009-10-20 15:43:24 -06:00
Joel Dice
f27ecaa199
fix memcpy argument order in Avian_avian_Singleton_getLong
2009-10-20 13:38:05 -06:00
Joel Dice
e06f0407cb
fix powerpc bootimage build (second try)
2009-10-20 09:06:52 -06:00
Joel Dice
c044781807
fix powerpc bootimage build
2009-10-20 08:20:49 -06:00
Joel Dice
984f3106fd
fix powerpc build
2009-10-19 10:31:34 -06:00
Joel Dice
1a63b72b41
clean up float-vs.-int tracking in constant pools
2009-10-17 20:11:03 -06:00
Joel Dice
15020d77a6
refactor intrinsic support
...
This ensures that the low-level, architecture specific code need not
be aware of the semantics and names of Java methods.
2009-10-17 19:26:14 -06:00
Joel Dice
f702795178
fix integer truncation bug
2009-10-17 18:35:19 -06:00
Joel Dice
cec6444911
fix bootimage build for case where the JIT code area is too far from the AOT code area to do immediate-offset jumps between them
2009-10-17 18:18:03 -06:00
Joel Dice
963bfb3e3f
avoid array bounds warnings from GCC 4.3
...
These warnings are due to GCC being smart enough to do interprocedural
constant propagation but not smart enough to avoid false positives in
all cases when looking for array bounds errors.
2009-10-17 18:09:54 -06:00
Joel Dice
7b0378c180
support darwin/x86_64
2009-10-14 10:01:37 -06:00
