73e72b47b2
git-svn-id: svn+ssh://svn.corp.yahoo.com/yahoo/yrl/labs/pnuts/code/logstore@1493 8dad8b1f-cf64-0410-95b6-bcf113ffbcfe
83 lines
2.3 KiB
C++
83 lines
2.3 KiB
C++
/*
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* mergeManager.h
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*
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* Created on: May 19, 2010
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* Author: sears
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*/
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#ifndef MERGEMANAGER_H_
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#define MERGEMANAGER_H_
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#include <stasis/common.h>
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#undef try
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#undef end
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#include <sys/time.h>
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#include <stdio.h>
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#include <datatuple.h>
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template<class TUPLE>
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class logtable;
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class mergeStats;
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class mergeManager {
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public:
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static const int UPDATE_PROGRESS_DELTA = 10 * 1024 * 1024;
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const double UPDATE_PROGRESS_PERIOD; // in seconds, defined in constructor.
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static const int FORCE_INTERVAL = 25 * 1024 * 1024;
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static double tv_to_double(struct timeval * tv) {
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return (double)tv->tv_sec + ((double)tv->tv_usec)/1000000.0;
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}
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static double ts_to_double(struct timespec * ts) {
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return (double)ts->tv_sec + ((double)ts->tv_nsec)/1000000000.0;
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}
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static void double_to_ts(struct timespec *ts, double time) {
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ts->tv_sec = (time_t)(time);
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ts->tv_nsec = (long)((time - (double)ts->tv_sec) * 1000000000.0);
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}
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uint64_t long_tv(struct timeval& tv) {
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return (1000000ULL * (uint64_t)tv.tv_sec) + ((uint64_t)tv.tv_usec);
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}
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mergeManager(logtable<datatuple> *ltable);
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mergeManager(logtable<datatuple> *ltable, int xid, recordid rid);
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void marshal(int xid, recordid rid);
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recordid talloc(int xid);
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~mergeManager();
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void new_merge(int mergelevel);
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void set_c0_size(int64_t size);
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void update_progress(mergeStats *s, int delta);
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double c1_c2_progress_delta();
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void tick(mergeStats * s);
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mergeStats* get_merge_stats(int mergeLevel);
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void read_tuple_from_small_component(int merge_level, datatuple * tup);
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void read_tuple_from_large_component(int merge_level, datatuple * tup) {
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if(tup)
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read_tuple_from_large_component(merge_level, 1, tup->byte_length());
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}
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void read_tuple_from_large_component(int merge_level, int tuple_count, pageid_t byte_len);
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void wrote_tuple(int merge_level, datatuple * tup);
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void finished_merge(int merge_level);
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void pretty_print(FILE * out);
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void *pretty_print_thread();
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private:
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double c1_c2_delta;
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void init_helper(void);
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struct marshalled_header {
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recordid c0;
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recordid c1;
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recordid c2;
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};
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logtable<datatuple>* ltable;
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mergeStats * c0;
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mergeStats * c1;
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mergeStats * c2;
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// The following fields are used to shut down the pretty print thread.
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bool still_running;
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pthread_cond_t pp_cond;
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pthread_t pp_thread;
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};
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#endif /* MERGEMANAGER_H_ */
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