8038930: G1CodeRootSet::test fails with assert(_num_chunks_handed_out == 0) failed: No elements must have been handed out yet
Summary: The test incorrectly assumed that it had been started with no other previous compilation activity. Fix this by allowing multiple code root free chunk lists, and use one separate from the global one to perform the test.
Reviewed-by: brutisso

Reviewed-by: brutisso, stefank, dholmes, rdurbin

Reviewed-by: jcoomes

Reviewed-by: kvn, jrose

Reviewed-by: brutisso, sjohanss

Summary: prefer <sys/ptrace.h> over <linux/ptrace.h>
Reviewed-by: sla, mikael
Contributed-by: kim.barrett@oracle.com

8033626: assert(ex_map->jvms()->same_calls_as(_exceptions->jvms())) failed: all collected exceptions must come from the same place
Reviewed-by: kvn, roland

Reviewed-by: jcoomes

Summary: Place new nodes on the previous loop exit in reorg_offsets().
Reviewed-by: roland

Summary: Added a new header waiting pattern to catch the case where the target thread waiting on a condition (like a VM op); several other test improvements
Reviewed-by: sspitsyn, dholmes

Reviewed-by: stefank, jmasa

Summary: Add missing check for Opaque nodes from loop predicates in clone_loop().
Reviewed-by: iveresov

Summary: Prevent from running with Xcomp
Reviewed-by: kvn, twisti

Summary: Add a !owner check for 'waiting to lock' to catch current_pending_monitor corner cases.
Reviewed-by: dholmes, sspitsyn, kmo, zgu
Contributed-by: rednaxelafx@gmail.com, zhengyu.gu@oracle.com, daniel.daugherty@oracle.com

Summary: Access to method_type and appendix from constant pool (cpcache) needs to be guarded by is_f1_null() because of racy update/initialization.
Reviewed-by: kvn, coleenp, jrose

Summary: Removed all write barriers during reference processing and added explicit write barriers when iterating through the discovered list.
Reviewed-by: pliden, jmasa, tschatzl

Summary: long series of lambda form calls trigger stack overflow in c2
Reviewed-by: kvn, vlivanov

Reviewed-by: ehelin, jwilhelm

Summary: Remove control edge of load node to ensure that castPP removal sets the control edge correctly
Reviewed-by: kvn, roland