Enum MonitorKind 

pub enum MonitorKind {
    Blocked,
    Acquired,
    Wait,
    Waited,
}

Which of the four monitor events a request fires on (DUMP-7, #96).

They are two pairs, not four independent kinds, and the names say which. Blocked → Acquired brackets one contended entry (a thread queued on a lock somebody else held, then got it), and Wait → Waited brackets one Object.wait(). Arming only one half of a pair is legitimate — it answers “is anything blocking at all” for the price of one request — but it can never yield a duration, because neither half carries a timing and the elapsed is measured across the two.

The labels are deliberately not the JDWP constant names. MONITOR_CONTENDED_ENTER and MONITOR_CONTENDED_ENTERED differ by two letters and mean opposite ends of the same block, which is a reading mistake waiting to happen in a reply a human has to act on.

Variants

Blocked

MONITOR_CONTENDED_ENTER (43): a thread began blocking on a monitor another thread owns.

Acquired

MONITOR_CONTENDED_ENTERED (44): a thread that was blocking has acquired the monitor.

Wait

MONITOR_WAIT (45): a thread is about to Object.wait(), which releases the monitor.

Waited

MONITOR_WAITED (46): a thread’s Object.wait() returned, either notified or timed out.

Implementations

impl MonitorKind

pub const ALL: [Self; 4]

Every kind, in the order the protocol numbers them — so a caller arming “all of them” arms them in a stable, reportable order rather than a hash order.

pub const fn event_kind(self) -> u8

The JDWP event kind this registers as, used for both Set and Clear.

pub const fn label(self) -> &'static str

Lowercase label used in tool arguments and output.

pub const fn partner(self) -> Self

The other half of this kind’s pair — the one an elapsed measurement needs armed as well.

pub const fn class_filter_tests_monitor(self) -> bool

Whether a ClassOnly modifier on this kind tests the monitor object’s class rather than the location’s — true for the wait pair only, per mod_kinds::CLASS_ONLY.

Trait Implementations

impl Clone for MonitorKind

fn clone(&self) -> MonitorKind

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for MonitorKind

impl Debug for MonitorKind

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Eq for MonitorKind

impl PartialEq for MonitorKind

fn eq(&self, other: &MonitorKind) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for MonitorKind