trims [Thu, 20 Jan 2011 17:53:38 -0800] rev 7925
Merge
johnc [Thu, 20 Jan 2011 13:57:12 -0800] rev 7924
Merge
tonyp [Wed, 19 Jan 2011 19:30:42 -0500] rev 7923
6977804: G1: remove the zero-filling thread
Summary: This changeset removes the zero-filling thread from G1 and collapses the two free region lists we had before (the "free" and "unclean" lists) into one. The new free list uses the new heap region sets / lists abstractions that we'll ultimately use it to keep track of all regions in the heap. A heap region set was also introduced for the humongous regions. Finally, this change increases the concurrency between the thread that completes freeing regions (after a cleanup pause) and the rest of the system (before we'd have to wait for said thread to complete before allocating a new region). The changest also includes a lot of refactoring and code simplification.
Reviewed-by: jcoomes, johnc
johnc [Wed, 19 Jan 2011 13:04:37 -0800] rev 7922
Merge
johnc [Wed, 19 Jan 2011 13:01:11 -0800] rev 7921
7012642: G1: JumbleGC002 test aborts with segmentation violation due to uncaught stack overflow
Summary: With recent G1 allocation path changes, the value of StackShadowPages in fast debug builds of the JVM, is no longer large enough to prevent the JVM C++ code from touching the stack guard pages. Increase the value of StackShadowPages to a suitable value.
Reviewed-by: ysr, tonyp, coleenp
tonyp [Wed, 19 Jan 2011 09:35:17 -0500] rev 7920
7011379: G1: overly long concurrent marking cycles
Summary: This changeset introduces filtering of SATB buffers at the point when they are about to be enqueued. If this filtering clears enough entries on each buffer, the buffer can then be re-used and not enqueued. This cuts down the number of SATB buffers that need to be processed by the concurrent marking threads.
Reviewed-by: johnc, ysr
dcubed [Wed, 19 Jan 2011 19:24:34 -0800] rev 7919
Merge
kamg [Wed, 19 Jan 2011 13:51:53 -0800] rev 7918
7012505: BreakpointWithFullGC.sh fails with Internal Error (src/share/vm/oops/methodOop.cpp:220)
Summary: Rebuild breakpoint cache at gc_epilogue instead of during oops_do
Reviewed-by: dcubed, ysr, coleenp
never [Wed, 19 Jan 2011 08:16:45 -0800] rev 7917
7013008: 2/3 assert(method == NULL || check_method(method, bcp)) failed: bcp must point into method
Summary: The Relocator should pass a NULL methodOop when rewriting since its resource array can never contain breakpoints.
Reviewed-by: dcubed, kvn, coleenp
dcubed [Wed, 19 Jan 2011 07:41:39 -0800] rev 7916
7012493: 2/2 6849574/Test.java fails with Internal Error (src/share/vm/prims/jvmtiTagMap.cpp:3294)
Summary: Refine assertion to work before VMThread has started.
Reviewed-by: ysr, never, dholmes, acorn
dcubed [Wed, 19 Jan 2011 07:15:09 -0800] rev 7915
Merge
coleenp [Fri, 14 Jan 2011 13:47:53 -0500] rev 7914
6811367: Fix code in HeapDumper::dump_heap() to avoid buffer overrun
Summary: Check buffer size before using and use dynamic buffer sizes for subsequent calls.
Reviewed-by: kamg, dholmes
never [Thu, 13 Jan 2011 22:15:41 -0800] rev 7913
4926272: methodOopDesc::method_from_bcp is unsafe
Reviewed-by: coleenp, jrose, kvn, dcubed
iveresov [Tue, 18 Jan 2011 18:00:06 -0800] rev 7912
7012766: assert(false) failed: DEBUG MESSAGE in MacroAssembler::debug32
Summary: Interpreter expects to see methodOop in rbx on method entry, which needs to be restored after call to profile_method.
Reviewed-by: kvn, never
kvn [Tue, 18 Jan 2011 17:10:03 -0800] rev 7911
7012965: Fix failed on sparc for 7009756: volatile variables could be broken throw reflection API
Summary: Use LDX/STX on v9 and LDD/STD on v8 sparc for volatile long moves.
Reviewed-by: never
minqi [Thu, 07 Oct 2010 13:49:40 -0700] rev 7910
6966589: hs16-b08 causes java.lang.StackOverflowError
Reviewed-by: mchung, dholmes, chrisphi