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The HotSpot code base has been worked on by dozens of people, over the course of 10 years, so far. (That's good and bad.) It's big. There are nearly 1500 C/C++ header and source files, comprising almost 250,000 lines of code. In addition to the expected class loader, bytecode interpreter, and supporting runtime routines, you get two runtime compilers from bytecode to native instructions, 3 (or so) garbage collectors, and a set of high-performance runtime libraries for synchronization, etc.
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    OpenJDK Hotspot Virtual Machine
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Thread (8757 Threads) Rating Replies Last Message Child Forum

request for codereview, bug 7149528: easy usage of serviceability agent by Yumin Qi
5
by Mark Wielaard

Object inlining is Java by Joao Lourenco
3
by Krystal Mok

RFR: 7170197 Update JPRT default build targets to support embedded builds by david.holmes
2
by john.coomes-2

Request for reviews (XS): 7170145: C1 doesn't respect the JMM with volatile field loads by Christian Thalinger-...
3
by Christian Thalinger-...

RFR (XS): Run SPECjbb in headless mode in JPRT by Mikael Vidstedt-3
5
by john.coomes-2

Request for reviews (M): 7170463: C2 should recognize "obj.getClass() == A.class" code pattern by Vladimir Kozlov-6
2
by Vladimir Kozlov-6

hg: hsx/hsx23.2/hotspot: 7160539: JDeveloper crashes on 64-bit Windows by Vladimir Kozlov-6
0
by Vladimir Kozlov-6

[PATCH 0 of 3] Add support for dtrace compatible sdt probes on GNU/Linux by Mark Wielaard-4
24
by Mark Wielaard-4

RFR (M): 7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement() by Roland Westrelin-2
4
by Roland Westrelin-2

hg: hsx/hotspot-emb/hotspot: 7168280: Eliminate the generic signature index slot from field array for field without generic signature. by david.holmes
0
by david.holmes

hg: hsx/hsx23.2/hotspot: 7157141: crash in 64 bit with corrupted oops by Vladimir Kozlov-6
0
by Vladimir Kozlov-6

RFR(XS): 7143858: G1: Back to back young GCs with the second GC having a minimally sized eden by John Cuthbertson
0
by John Cuthbertson

inliner heuristics by Xin Tong-2
1
by Xin Tong-2

debug in hotspot by Xin Tong-2
5
by Xin Tong-2

Re: RFR (L): Adding core file parsing on Mac OS X to SA by Staffan Larsen-2
0
by Staffan Larsen-2

hg: hsx/hsx23.2/hotspot: 7165755: OS Information much longer on linux than other platforms by Staffan Larsen-2
0
by Staffan Larsen-2

hg: hsx/hotspot-gc/hotspot: 7168848: Add test to check that humongous object allocation path also checks the heap occupancy. by Bengt Rutisson
0
by Bengt Rutisson

hg: hsx/hotspot-comp/hotspot: 7169934: pow(x, y) or x64 computes incorrect result when x<0 and y is an odd integer by Roland Westrelin-2
0
by Roland Westrelin-2

RFS (XS): 7169934: pow(x, y) or x64 computes incorrect result when x<0 and y is an odd integer by Roland Westrelin-2
3
by Roland Westrelin-2

hg: hsx/hotspot-gc/hotspot: 7169062: CMS: Assertion failed with -XX:+ObjectAlignmentInBytes=64 by Bengt Rutisson
0
by Bengt Rutisson

compressed pointer in hotspot by Xin Tong-2
2
by Xin Tong-2

hg: hsx/hotspot-gc/hotspot: 9 new changesets by alejandro.murillo
0
by alejandro.murillo

hg: hsx/hotspot-emb/hotspot: 31 new changesets by alejandro.murillo
0
by alejandro.murillo

hg: hsx/hotspot-main/hotspot: 4 new changesets by alejandro.murillo
0
by alejandro.murillo

hg: hsx/hsx23.2/hotspot: 7170009: new hotspot build - hs23.2-b03 by alejandro.murillo
0
by alejandro.murillo

Request for review (XS): crash in C2 when using -XX:+CountCompiledCalls by Krystal Mok
7
by Krystal Mok

hg: hsx/hsx24/hotspot: 15 new changesets by alejandro.murillo
0
by alejandro.murillo

hg: hsx/hotspot-comp/hotspot: 7170053: crash in C2 when using -XX:+CountCompiledCalls by Christian Thalinger-...
0
by Christian Thalinger-...

hg: hsx/hsx23.2/hotspot: Added tag hs23.2-b02 for changeset b7ae1ee1d2e4 by alejandro.murillo
0
by alejandro.murillo

hg: hsx/hotspot-main/hotspot: 7 new changesets by john.coomes-2
0
by john.coomes-2

hg: hsx/hotspot-rt/hotspot: 7170010: conditional "ZIP_DEBUGINFO_FILES ?= 0" setting is not reliable on Windows by Daniel D. Daugherty
0
by Daniel D. Daugherty

x86 interpreters in hotspot by Xin Tong-2
17
by Xin Tong-2

Request for review (S): C2 should recognize "obj.getClass() == A.class" code pattern by Krystal Mok
14
by Vladimir Kozlov-6

hg: hsx/hotspot-comp/hotspot: 7167254: Crash on OSX in Enumerator.nextElement() with compressed oops by Roland Westrelin-2
0
by Roland Westrelin-2

deeply nested MethodHandles, performance? by miguelalfredo.garcia
0
by miguelalfredo.garcia
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