Reviewed-by: mgerdin, tschatzl, jmasa

Summary: Add G1BiasedArray<T> that is an array where each element represents a fixed-sized subdivision of the heap. Use this abstraction to refactor the HeapRegionSeq class.
Reviewed-by: brutisso

Reviewed-by: coleenp, mgerdin, jmasa

Reviewed-by: jcoomes

Reviewed-by: coleenp, brutisso, mgerdin, jmasa

Summary: SymbolTable and StringTable can make calls to GC_locker::is_active() outside a safepoint. This isn't safe because the GC_locker active state (lock count) is only updated at a safepoint and only remains valid as long as _needs_gc is true. However, outside a safepoint_needs_gc can change to false at any time, which makes it impossible to do a correct call to is_active() in that context. In this case these calls can just be removed since the input argument to basic_add() should never be on the heap and so there's no need to check the GC_locker state. This change also adjusts the assert() in is_active() to makes sure all calls to this function are always done under a safepoint.
Reviewed-by: brutisso, dcubed
Contributed-by: per.liden@oracle.com

8023542: Test java/io/File/CheckPermission.java fails due to unfinished recursion (java.lang.StackOverflowError) when JIT'ed code (-client,-server) is running
Summary: Move null check before klass reference materialization in checkcast
Reviewed-by: kvn, roland

8024669: Native OOME when allocating after changes to maximum heap supporting Coops sizing on sparcv9
Summary: After changes in 8010722 the ergonomics for calculating the size of the heap that supports zero based compressed oops changed. This lead to the VM actually using zero based compressed oops. Due to low default HeapBaseMinAddress, the OS mapping in the application image at the same address, and limitations of the malloc implementation on Solaris this resulted in very little C heap available for the VM. So the VM immediately gives a native OOME when the machine has lots of physical memory (>=32G). The solution is to increase the HeapBaseMinAddress so that the VM has enough C heap.
Reviewed-by: kvn, brutisso

Summary: Fix compilation error and use of an outdated VM option in the test
Reviewed-by: stefank, jwilhelm

Summary: Provide correct number of visited nmethods to Tracing
Reviewed-by: kvn, iveresov

Reviewed-by: stefank, dholmes, coleenp

Summary: Re-wrote in Java, this also eliminated temporary result file; set upper limit on malloc'd memory
Reviewed-by: dcubed, dholmes, ccheung

Summary: Rewrote test in Java; updated the test condition to reflect latest changes in the source
Reviewed-by: dholmes, ctornqvi

Summary: Change JDKToolFinder to look in compile.jdk if the executable cannot be found in test.jdk
Reviewed-by: dholmes, hseigel

Summary: Updated the test list with the new test name.
Reviewed-by: brutisso, ehelin

Summary: Incorrect usage of idx_t where bm_word_t is appropriate.
Reviewed-by: tschatzl, brutisso
Contributed-by: NDan Horak <dhorak@redhat.com>

8024128: guarantee(codelet_size > 0 && (size_t)codelet_size > 2*K) failed: not enough space for interpreter generation
Summary: Increase interpreter size for x86 template interpreter
Reviewed-by: kvn, iveresov

Summary: made changes to easily identify current log file in rotation. Parameterize the input with %t for time replacement in file name.
Reviewed-by: ccheung, tschatzl, tamao, zgu
Contributed-by: yumin.qi@oracle.com

Reviewed-by: kamg, minqi

Summary: Cleanup and document how various Linux release info files are used by print_distro_info().
Reviewed-by: dcubed, dsamersoff, coleenp, iklam, omajid
Contributed-by: gerald.thornbrugh@oracle.com

6900441: PlatformEvent.park(millis) on Linux could still be affected by changes to the time-of-day clock
Summary: Associate CLOCK_MONOTONIC with the pthread_cond_t objects used for relative timed waits
Reviewed-by: dcubed, shade