8025852: Remove unnecessary setters in collector policy classes
Summary: Use instance variables directly within the collector policy classes and remove unused setters.
Reviewed-by: tschatzl, jcoomes
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#ifndef SHARE_VM_GC_IMPLEMENTATION_G1_CONCURRENTMARKTHREAD_HPP
#define SHARE_VM_GC_IMPLEMENTATION_G1_CONCURRENTMARKTHREAD_HPP
#include "gc_implementation/shared/concurrentGCThread.hpp"
// The Concurrent Mark GC Thread (could be several in the future).
// This is copied from the Concurrent Mark Sweep GC Thread
// Still under construction.
class ConcurrentMark;
class ConcurrentMarkThread: public ConcurrentGCThread {
friend class VMStructs;
double _vtime_start; // Initial virtual time.
double _vtime_accum; // Accumulated virtual time.
double _vtime_mark_accum;
public:
virtual void run();
private:
ConcurrentMark* _cm;
volatile bool _started;
volatile bool _in_progress;
void sleepBeforeNextCycle();
static SurrogateLockerThread* _slt;
public:
// Constructor
ConcurrentMarkThread(ConcurrentMark* cm);
static void makeSurrogateLockerThread(TRAPS);
static SurrogateLockerThread* slt() { return _slt; }
// Printing
void print_on(outputStream* st) const;
void print() const;
// Total virtual time so far.
double vtime_accum();
// Marking virtual time so far
double vtime_mark_accum();
ConcurrentMark* cm() { return _cm; }
void set_started() { assert(!_in_progress, "cycle in progress"); _started = true; }
void clear_started() { assert(_in_progress, "must be starting a cycle"); _started = false; }
bool started() { return _started; }
void set_in_progress() { assert(_started, "must be starting a cycle"); _in_progress = true; }
void clear_in_progress() { assert(!_started, "must not be starting a new cycle"); _in_progress = false; }
bool in_progress() { return _in_progress; }
// This flag returns true from the moment a marking cycle is
// initiated (during the initial-mark 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). While this flag is true we will not start another cycle
// so that cycles do not overlap. We cannot use just in_progress()
// as the CM thread might take some time to wake up before noticing
// that started() is set and set in_progress().
bool during_cycle() { return started() || in_progress(); }
// Yield for GC
void yield();
// shutdown
void stop();
};
#endif // SHARE_VM_GC_IMPLEMENTATION_G1_CONCURRENTMARKTHREAD_HPP