#include <stdio.h>
#include <stdlib.h>
#include <pthread.h>
#include <string.h>
#include <stdint.h>
#include <pthread.h>

#include <config.h>
#include <primitives.h>
#include <fastrand.h>
#include <threadtools.h>
#include <barrier.h>
#include <bench_args.h>

volatile int64_t object CACHE_ALIGN;
pthread_spinlock_t lock CACHE_ALIGN;
int64_t d1 CACHE_ALIGN, d2;
SynchBarrier bar CACHE_ALIGN;
SynchBenchArgs bench_args CACHE_ALIGN;

inline static void *Execute(void *Arg) {
    long i, rnum;
    volatile int j;
    int id = synchGetThreadId();

    synchFastRandomSetSeed(id + 1);
    synchBarrierWait(&bar);
    if (id == 0) d1 = synchGetTimeMillis();

    for (i = 0; i < bench_args.runs; i++) {
        pthread_spin_lock(&lock);
        object = object + 1;
        pthread_spin_unlock(&lock);
        rnum = synchFastRandomRange(1, bench_args.max_work);
        for (j = 0; j < rnum; j++)
            ;
    }
    synchBarrierWait(&bar);
    if (id == 0) d2 = synchGetTimeMillis();

    return NULL;
}

int main(int argc, char *argv[]) {
    synchParseArguments(&bench_args, argc, argv);
    object = 0;
    pthread_spin_init(&lock, PTHREAD_PROCESS_SHARED);
    synchBarrierSet(&bar, bench_args.nthreads);
    synchStartThreadsN(bench_args.nthreads, Execute, bench_args.fibers_per_thread);
    synchJoinThreadsN(bench_args.nthreads);

    printf("time: %d (ms)\tthroughput: %.2f (millions ops/sec)\t", (int)(d2 - d1), bench_args.runs * bench_args.nthreads / (1000.0 * (d2 - d1)));
    synchPrintStats(bench_args.nthreads, bench_args.total_runs);
#ifdef DEBUG
    fprintf(stderr, "DEBUG: Object state: %ld\n", object);
#endif
    return 0;
}
