1.1 --- a/src/share/vm/gc_implementation/g1/concurrentMark.hpp Mon Apr 04 13:18:35 2011 -0400
1.2 +++ b/src/share/vm/gc_implementation/g1/concurrentMark.hpp Mon Apr 04 14:23:17 2011 -0400
1.3 @@ -1149,4 +1149,54 @@
1.4 #endif // _MARKING_STATS_
1.5 };
1.6
1.7 +// Class that's used to to print out per-region liveness
1.8 +// information. It's currently used at the end of marking and also
1.9 +// after we sort the old regions at the end of the cleanup operation.
1.10 +class G1PrintRegionLivenessInfoClosure: public HeapRegionClosure {
1.11 +private:
1.12 + outputStream* _out;
1.13 +
1.14 + // Accumulators for these values.
1.15 + size_t _total_used_bytes;
1.16 + size_t _total_capacity_bytes;
1.17 + size_t _total_prev_live_bytes;
1.18 + size_t _total_next_live_bytes;
1.19 +
1.20 + // These are set up when we come across a "stars humongous" region
1.21 + // (as this is where most of this information is stored, not in the
1.22 + // subsequent "continues humongous" regions). After that, for every
1.23 + // region in a given humongous region series we deduce the right
1.24 + // values for it by simply subtracting the appropriate amount from
1.25 + // these fields. All these values should reach 0 after we've visited
1.26 + // the last region in the series.
1.27 + size_t _hum_used_bytes;
1.28 + size_t _hum_capacity_bytes;
1.29 + size_t _hum_prev_live_bytes;
1.30 + size_t _hum_next_live_bytes;
1.31 +
1.32 + static double perc(size_t val, size_t total) {
1.33 + if (total == 0) {
1.34 + return 0.0;
1.35 + } else {
1.36 + return 100.0 * ((double) val / (double) total);
1.37 + }
1.38 + }
1.39 +
1.40 + static double bytes_to_mb(size_t val) {
1.41 + return (double) val / (double) M;
1.42 + }
1.43 +
1.44 + // See the .cpp file.
1.45 + size_t get_hum_bytes(size_t* hum_bytes);
1.46 + void get_hum_bytes(size_t* used_bytes, size_t* capacity_bytes,
1.47 + size_t* prev_live_bytes, size_t* next_live_bytes);
1.48 +
1.49 +public:
1.50 + // The header and footer are printed in the constructor and
1.51 + // destructor respectively.
1.52 + G1PrintRegionLivenessInfoClosure(outputStream* out, const char* phase_name);
1.53 + virtual bool doHeapRegion(HeapRegion* r);
1.54 + ~G1PrintRegionLivenessInfoClosure();
1.55 +};
1.56 +
1.57 #endif // SHARE_VM_GC_IMPLEMENTATION_G1_CONCURRENTMARK_HPP
