Ticket #15509: TeamTests.cpp

#include <OS.h>
#include <image.h>
#include <stdio.h>
#include <stdlib.h>

enum {
    second = 1000000,
    stepCnt = 10000000
};


int main(int argc, char** argv)
{
    switch (argc) {
        case 1: {
            sem_id reqSem = create_sem(0, "test req sem");
            sem_id replSem = create_sem(0, "test repl sem");
            char reqSemStr[32];
            char replSemStr[32];
            sprintf(reqSemStr, "%" B_PRId32, reqSem);
            sprintf(replSemStr, "%" B_PRId32, replSem);
            const char *childArgv[] = {
                argv[0],
                reqSemStr,
                replSemStr,
            };
            team_id childTeam = load_image(3, childArgv, (const char**)environ);
            resume_thread(childTeam);
            bigtime_t t1 = system_time();
            for (int i = 0; i < stepCnt; i++) {
                release_sem(reqSem);
                while (acquire_sem(replSem) == B_INTERRUPTED) {}
            }
            bigtime_t t2 = system_time();
            printf("round trip: %f\n", double(stepCnt)/((t2 - t1)/double(second)));
            printf("context switches: %f\n", 2*double(stepCnt)/((t2 - t1)/double(second)));
            status_t res;
            wait_for_thread(childTeam, &res);
            delete_sem(reqSem); reqSem = -1;
            delete_sem(replSem); replSem = -1;
            return 0;
        }
        case 3: {
            sem_id reqSem = atoi(argv[1]);
            sem_id replSem = atoi(argv[2]);
            for (uint32 i = 0; i < stepCnt; i++) {
                while (acquire_sem(reqSem) == B_INTERRUPTED) {}
                release_sem(replSem);
            }
            return 0;
        }
        default:
            return 1;
    }
}