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src/hotspot/share/runtime/vmStructs.cpp

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rev 56044 : imported patch 8230184.patch
rev 56046 : v2.00 -> v2.05 (CR5/v2.05/8-for-jdk13) patches combined into one; merge with 8229212.patch; merge with jdk-14+11; merge with 8230184.patch.
rev 56048 : Add OM_CACHE_LINE_SIZE so that ObjectMonitor cache line sizes can be experimented with independently of DEFAULT_CACHE_LINE_SIZE; for SPARC and X64 configs that use 128 for DEFAULT_CACHE_LINE_SIZE, we are experimenting with 64; move _previous_owner_tid and _allocation_state fields to share the cache line with ObjectMonitor::_header; put ObjectMonitor::_ref_count on its own cache line after _owner; add 'int* count_p' parameter to deflate_monitor_list() and deflate_monitor_list_using_JT() and push counter updates down to where the ObjectMonitors are actually removed from the in-use lists; monitors_iterate() async deflation check should use negative ref_count; add 'JavaThread* target' param to deflate_per_thread_idle_monitors_using_JT() add deflate_common_idle_monitors_using_JT() to make it clear which JavaThread* is the target of the work and which is the calling JavaThread* (self); g_free_list, g_om_in_use_list and g_om_in_use_count are now static to synchronizer.cpp (reduce scope); add more diagnostic info to some assert()'s; minor code cleanups and code motion; save_om_ptr() should detect a race with a deflating thread that is bailing out and cause a retry when the ref_count field is not positive; merge with jdk-14+11; add special GC support for TestHumongousClassLoader.java; merge with 8230184.patch.
rev 56049 : Merge the remainder of the lock-free monitor list changes from v2.06 with v2.06a and v2.06b after running the changes through the edit scripts; merge pieces from dcubed.monitor_deflate_conc.v2.06d in dcubed.monitor_deflate_conc.v2.06[ac]; merge pieces from dcubed.monitor_deflate_conc.v2.06e into dcubed.monitor_deflate_conc.v2.06c; merge with jdk-14+11; test work around for test/jdk/tools/jlink/multireleasejar/JLinkMultiReleaseJarTest.java should not been needed anymore.

*** 91,100 **** --- 91,101 ---- #include "runtime/os.hpp" #include "runtime/perfMemory.hpp" #include "runtime/serviceThread.hpp" #include "runtime/sharedRuntime.hpp" #include "runtime/stubRoutines.hpp" + #include "runtime/synchronizer.hpp" #include "runtime/thread.inline.hpp" #include "runtime/threadSMR.hpp" #include "runtime/vframeArray.hpp" #include "runtime/vmStructs.hpp" #include "utilities/globalDefinitions.hpp"
*** 907,921 **** /************/ \ \ volatile_nonstatic_field(ObjectMonitor, _header, markWord) \ unchecked_nonstatic_field(ObjectMonitor, _object, sizeof(void *)) /* NOTE: no type */ \ unchecked_nonstatic_field(ObjectMonitor, _owner, sizeof(void *)) /* NOTE: no type */ \ volatile_nonstatic_field(ObjectMonitor, _contentions, jint) \ volatile_nonstatic_field(ObjectMonitor, _waiters, jint) \ volatile_nonstatic_field(ObjectMonitor, _recursions, intptr_t) \ - nonstatic_field(ObjectMonitor, _next_om, ObjectMonitor*) \ - volatile_nonstatic_field(BasicLock, _displaced_header, markWord) \ nonstatic_field(BasicObjectLock, _lock, BasicLock) \ nonstatic_field(BasicObjectLock, _obj, oop) \ static_ptr_volatile_field(ObjectSynchronizer, g_block_list, PaddedObjectMonitor*) \ \ /*********************/ \ --- 908,922 ---- /************/ \ \ volatile_nonstatic_field(ObjectMonitor, _header, markWord) \ unchecked_nonstatic_field(ObjectMonitor, _object, sizeof(void *)) /* NOTE: no type */ \ unchecked_nonstatic_field(ObjectMonitor, _owner, sizeof(void *)) /* NOTE: no type */ \ + volatile_nonstatic_field(ObjectMonitor, _next_om, ObjectMonitor*) \ + volatile_nonstatic_field(BasicLock, _displaced_header, markWord) \ volatile_nonstatic_field(ObjectMonitor, _contentions, jint) \ volatile_nonstatic_field(ObjectMonitor, _waiters, jint) \ volatile_nonstatic_field(ObjectMonitor, _recursions, intptr_t) \ nonstatic_field(BasicObjectLock, _lock, BasicLock) \ nonstatic_field(BasicObjectLock, _obj, oop) \ static_ptr_volatile_field(ObjectSynchronizer, g_block_list, PaddedObjectMonitor*) \ \ /*********************/ \
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