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8374151: Cleanup minor markWord function disorder

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Reviewed-by: rcastanedalo, dholmes
This commit is contained in:
Stefan Karlsson 2025-12-22 10:16:14 +00:00
parent 551e656218
commit 2715f5e698
1 changed files with 14 additions and 13 deletions
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27
src/hotspot/share/oops/markWord.hpp
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@ -189,23 +189,15 @@ class markWord {
bool has_monitor() const {
return ((value() & lock_mask_in_place) == monitor_value);
}
markWord set_has_monitor() const {
return markWord((value() & ~lock_mask_in_place) | monitor_value);
}
ObjectMonitor* monitor() const {
assert(has_monitor(), "check");
assert(!UseObjectMonitorTable, "Locking with OM table does not use markWord for monitors");
// Use xor instead of &~ to provide one extra tag-bit check.
return (ObjectMonitor*) (value() ^ monitor_value);
}
bool has_displaced_mark_helper() const {
intptr_t lockbits = value() & lock_mask_in_place;
return !UseObjectMonitorTable && lockbits == monitor_value;
}
markWord displaced_mark_helper() const;
void set_displaced_mark_helper(markWord m) const;
markWord copy_set_hash(intptr_t hash) const {
uintptr_t tmp = value() & (~hash_mask_in_place);
tmp |= ((hash & hash_mask) << hash_shift);
return markWord(tmp);
}
static markWord encode(ObjectMonitor* monitor) {
assert(!UseObjectMonitorTable, "Locking with OM table does not use markWord for monitors");
@ -213,9 +205,12 @@ class markWord {
return markWord(tmp | monitor_value);
}
markWord set_has_monitor() const {
return markWord((value() & ~lock_mask_in_place) | monitor_value);
bool has_displaced_mark_helper() const {
intptr_t lockbits = value() & lock_mask_in_place;
return !UseObjectMonitorTable && lockbits == monitor_value;
}
markWord displaced_mark_helper() const;
void set_displaced_mark_helper(markWord m) const;
// used to encode pointers during GC
markWord clear_lock_bits() const { return markWord(value() & ~lock_mask_in_place); }
@ -240,6 +235,12 @@ class markWord {
return hash() == no_hash;
}
markWord copy_set_hash(intptr_t hash) const {
uintptr_t tmp = value() & (~hash_mask_in_place);
tmp |= ((hash & hash_mask) << hash_shift);
return markWord(tmp);
}
inline Klass* klass() const;
inline Klass* klass_or_null() const;
inline Klass* klass_without_asserts() const;