Reviewed-by: dholmes, erikj

Reviewed-by: acorn, hseigel, mschoene

Summary: Add a WhiteBox callback to the VM to start a concurrent mark cycle in G1.
Reviewed-by: tschatzl, sjohanss
Contributed-by: NLeonid Mesnik <leonid.mesnik@oracle.com>

8061715: gc/g1/TestShrinkAuxiliaryData15.java fails with java.lang.RuntimeException: heap decommit failed - after > before
Summary: added WhiteBox methods to count regions and exact aux data sizes
Reviewed-by: jwilhelm, brutisso

Reviewed-by: kvn, iignatyev

8072863: Replace fatal() with vm_exit_during_initialization() when an incorrect class is found on the bootclasspath
Reviewed-by: dholmes, coleenp
Contributed-by: NCheleswer Sahu <cheleswer.sahu@oracle.com>

Summary: Allow use of large pages for auxiliary data structures in G1. Clean up existing interfaces.
Reviewed-by: jmasa, pliden, stefank

Summary: Unsafe is not recommended and may deprecated in future. Added a WhiteBox API to get VM page size.
Reviewed-by: dholmes, ccheung, mseledtsov
Contributed-by: yumin.qi@oracle.com

8058251: assert(_count > 0) failed: Negative counter when running runtime/NMT/MallocTrackingVerify.java
Summary: Fixed an issue when overflowing the MallocSite hash table bucket
Reviewed-by: coleenp, gtriantafill

Reviewed-by: ctornqvi, coleenp

8065346: WB_AddToBootstrapClassLoaderSearch calls JvmtiEnv::create_a_jvmti when not in _thread_in_vm state
Summary: Removed ThreadToNativeFromVM and use java_lang_String::as_utf8_string instead
Reviewed-by: dholmes, minqi

Summary: Added API to track bootclasspath modification
Reviewed-by: jiangli, dholmes, minqi

Summary: Fixed Whitebox.deoptimizeMethod() to deoptimize all OSR versions of the method.
Reviewed-by: kvn, iignatyev

Summary: Implemented the interface in sun.misc.URLClassPath and corresponding JVM_XXX APIs
Reviewed-by: mchung, acorn, jiangli, dholmes

Summary: Let HeapRegionSeq manage the heap region and auxiliary data to decrease the amount of responsibilities of G1CollectedHeap, and encapsulate this work from other code.
Reviewed-by: jwilhelm, jmasa, mgerdin, brutisso

Summary: Extend the WhiteBox API to provide information about the size and age of objects. Further add a mechanism to trigger a young GC.
Reviewed-by: tschatzl, sjohanss
Contributed-by: NLeonid Mesnik <leonid.mesnik@oracle.com>

Summary: Enhance scalability of native memory tracking
Reviewed-by: coleenp, ctornqvi, gtriantafill

Reviewed-by: vlivanov, sla

Reviewed-by: tschatzl, ehelin, brutisso, coleenp, roland, iveresov
Contributed-by: stefan.karlsson@oracle.com, mikael.gerdin@oracle.com

8043029: Change 8037816 breaks HS build with older GCC versions which don't support diagnostic pragmas
8043164: Format warning in traceStream.hpp
Summary: Backport of main fix + two corrections, enables clang compilation, turns on format attributes, corrects/mutes warnings
Reviewed-by: kvn, coleenp, iveresov, twisti

Reviewed-by: morris, kvn

Reviewed-by: kvn, iveresov

Summary: Refactored parts of whitebox.cpp to enable registration of whitebox methods defined outside this file.
Reviewed-by: mikael, ctornqvi, jmasa

Reviewed-by: jmasa, stefank

Reviewed-by: iveresov, kvn, iignatyev
Contributed-by: filipp.zhinkin@oracle.com

Reviewed-by: kvn, roland

Summary: added JNI exception pending check in several files under src/share/vm/prims directory
Reviewed-by: coleenp, minqi

Summary: Disallow increasing native memory tracking level
Reviewed-by: hseigel, ctornqvi, gtriantafill

Summary: Three tests added: 1) test stressing VirtualSpace by resizing it constantly 2) test running unit tests in several threads 3) test checking protected area in ReservedHeapSpace class
Reviewed-by: stefank, zgu
Contributed-by: aleksey.timofeev@oracle.com

7057939: jmap shows MaxNewSize=4GB when Java is using parallel collector
Summary: Major cleanup of the collectorpolicy classes
Reviewed-by: tschatzl, jcoomes

Summary: Use conservative assumptions of required alignment for the various garbage collector components into account when determining the maximum heap size that supports compressed oops. Using this conservative value avoids several circular dependencies in the calculation.
Reviewed-by: stefank, dholmes

Summary: Make tests query a new WhiteBox API to see if NMT detail is supported, and behave properly if it is not supported.
Reviewed-by: dholmes, coleenp

Reviewed-by: kvn

8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
Summary: Detect mmap() commit failures in Linux and Solaris os::commit_memory() impls and call vm_exit_out_of_memory(). Add os::commit_memory_or_exit(). Also tidy up some NMT accounting and some mmap() return value checking.
Reviewed-by: zgu, stefank, dholmes, dsamersoff

8013726: runtime/memory/ReserveMemory.java fails due to 'assert(bytes % os::vm_allocation_granularity() == 0) failed: reserve block size'
Summary: Fix regression test to work on all platforms
Reviewed-by: ctornqvi, dholmes

Summary: Make processing of minimum, initial and maximum heap size more intiutive by removing previous limitations on allowed values, and make error reporting consistent. Further, fix errors in ergonomic heap sizing.
Reviewed-by: johnc, jwilhelm, tamao

Summary: Reserved memory had PROT_READ+PROT_WRITE access on Linux/bsd, now changed to PROT_NONE.
Reviewed-by: dholmes, ctornqvi

Summary: Instead of terminating the VM, throw OutOfMemoryError exceptions.
Reviewed-by: coleenp, dholmes

Reviewed-by: kvn, vlivanov

Reviewed-by: kvn, vlivanov