// The concurrent mark thread triggers the various steps of the concurrent marking // cycle, including various marking cleanup. class G1ConcurrentMarkThread: public ConcurrentGCThread { friendclass VMStructs;
// Wait for next cycle. Returns the command passed over. bool wait_for_next_cycle();
bool mark_loop_needs_restart() const;
// Phases and subphases for the full concurrent marking cycle in order. // // All these methods return true if the marking should be aborted. bool phase_clear_cld_claimed_marks(); bool phase_scan_root_regions();
// Total virtual time so far for this thread and concurrent marking tasks. double vtime_accum(); // Marking virtual time so far this thread and concurrent marking tasks. double vtime_mark_accum();
bool idle() const; // Returns true from the moment a concurrent cycle is // initiated (during the concurrent start pause when started() is set) // to the moment when the cycle completes (just after the next // marking bitmap has been cleared and in_progress() is // cleared). bool in_progress() const;
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