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8153224: Monitor deflation prolong safepoints

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Add support for AsyncDeflateIdleMonitors (default true); the async deflation work is performed by the ServiceThread.

Co-authored-by: Carsten Varming <varming@gmail.com>
Reviewed-by: dcubed, rehn, rkennke, cvarming, coleenp, acorn, dholmes, eosterlund
This commit is contained in:
Daniel D. Daugherty 2020-06-01 23:37:14 -04:00
parent 30aa1b0689
commit 00f223e22f
23 changed files with 1496 additions and 250 deletions
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9
src/hotspot/share/runtime/vmStructs.cpp
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@ -94,6 +94,7 @@
#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"
@ -899,14 +900,14 @@ typedef HashtableEntry<InstanceKlass*, mtClass> KlassHashtableEntry;
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, _next_om, ObjectMonitor*) \
volatile_nonstatic_field(BasicLock, _displaced_header, markWord) \
nonstatic_field(ObjectMonitor, _contentions, jint) \
volatile_nonstatic_field(ObjectMonitor, _waiters, jint) \
volatile_nonstatic_field(ObjectMonitor, _recursions, intx) \
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*) \
static_field(ObjectSynchronizer, g_block_list, PaddedObjectMonitor*) \
\
/*********************/ \
/* Matcher (C2 only) */ \