X-Git-Url: http://rtime.felk.cvut.cz/gitweb/can-benchmark.git/blobdiff_plain/d160440e6b0b21e25f6212f0cddf0e03883659b9..9c7f01f350147569783a77597f38facc70580aed:/latester/latester.c diff --git a/latester/latester.c b/latester/latester.c index f57de3a..a25fd10 100644 --- a/latester/latester.c +++ b/latester/latester.c @@ -59,10 +59,16 @@ struct options { unsigned timeout_ms; unsigned count; unsigned oneattime; - FILE *file; - FILE *histogram; + char *name; + int histogram; + int file; int length; int userhist; + + /* Temporary variables */ + FILE *f_msgs; + FILE *f_hist; + FILE *f_stat; }; struct options opt = { @@ -72,8 +78,15 @@ struct options opt = { .length = 2, }; +struct { + unsigned enobufs; + unsigned overrun; + unsigned lost; +} stats; + int num_interfaces = 0; int count = 0; /* Number of sent messages */ +unsigned msg_in_progress = 0; int completion_pipe[2]; struct msg_info { @@ -126,7 +139,7 @@ static inline struct msg_info *frame2info(struct can_frame *frame) if (idx >= MAX_INFOS) error(1, 0, "%s idx too high", __FUNCTION__); } else { - + error(1, 0, "%s error", __FUNCTION__); } return &msg_infos[idx]; @@ -290,7 +303,7 @@ int init_ftrace() char *debugfs; char path[256]; FILE *f; - + debugfs = "/sys/kernel/debug"; if (debugfs) { strcpy(path, debugfs); @@ -371,7 +384,7 @@ int send_frame(int socket) mi->length = frame.can_dlc; get_tstamp(&mi->ts_sent); mi->sent = frame; - + trace_on(); ret = write(socket, &frame, sizeof(frame)); trace_off(ret); @@ -381,6 +394,22 @@ int send_frame(int socket) return ret; } +static inline send_and_check(int s) +{ + int ret; + ret = send_frame(s); + if (ret != sizeof(struct can_frame)) { +/* if (ret == -1 && errno == ENOBUFS && opt.period_us == 0 && !opt.oneattime) { */ +/* stats.enobufs++; */ +/* /\* Ignore this error - pfifo_fast qeuue is full *\/ */ +/* } else */ + error(1, errno, "send_frame (line %d)", __LINE__); + } else { + count++; + msg_in_progress++; + } +} + static inline void get_next_timeout(struct timespec *timeout) { struct timespec now; @@ -397,7 +426,10 @@ static inline void get_next_timeout(struct timespec *timeout) last.tv_nsec -= 1000000000; last.tv_sec++; } - timespec_subtract(timeout, &last, &now); + if (timespec_subtract(timeout, &last, &now) /* is negative */) { + stats.overrun++; + memset(timeout, 0, sizeof(*timeout)); + } } else if (opt.timeout_ms != 0) { timeout->tv_sec = opt.timeout_ms/1000; timeout->tv_nsec = (opt.timeout_ms%1000)*1000000; @@ -470,7 +502,7 @@ void process_final_rx(int s) struct can_frame frame; struct msg_info *mi; int ret; - + receive(s, &frame, &ts_kern, &ts_user); mi = frame2info(&frame); mi->ts_rx_final_kern = ts_kern; @@ -492,7 +524,6 @@ void *measure_thread(void *arg) struct timespec timeout; struct sockaddr_can addr; sigset_t set; - unsigned msg_in_progress = 0; MEMSET_ZERO(pfd); @@ -534,25 +565,10 @@ void *measure_thread(void *arg) set_sched_policy_and_prio(SCHED_FIFO, 40); -#define SEND() \ - do { \ - ret = send_frame(pfd[0].fd); \ - if (ret != sizeof(struct can_frame)) { \ - if (ret == -1 && errno == ENOBUFS && opt.period_us == 0 && !opt.oneattime) { \ - /* Ignore this error - pfifo_fast qeuue is full */ \ - } else \ - error(1, errno, "send_frame (line %d)", __LINE__); \ - } \ - else { \ - count++; \ - msg_in_progress++; \ - } \ - } while (0) - - if (opt.oneattime) { +#define SEND() send_and_check(pfd[0].fd) + + if (opt.oneattime) SEND(); - count = 1; - } while (!finish_flag && (opt.count == 0 || count < opt.count || msg_in_progress != 0)) { @@ -617,8 +633,9 @@ struct poptOption optionsTable[] = { { "timeout",'t', POPT_ARG_INT|POPT_ARGFLAG_SHOW_DEFAULT, &opt.timeout_ms,0, "Timeout when period is zero", "ms"}, { "oneattime",'o', POPT_ARG_NONE, &opt.oneattime,0, "Send the next message only when the previous was finally received"}, { "verbose",'v', POPT_ARG_NONE, NULL, 'v', "Send the next message only when the previous was finally received"}, - { "file", 'f', POPT_ARG_STRING, NULL, 'f', "File where to store results", "filename"}, - { "histogram", 'h', POPT_ARG_STRING, NULL, 'h', "Store histogram in file", "filename"}, + { "name", 'n', POPT_ARG_STRING, &opt.name, 0, "Prefix of the generated files"}, + { "file", 'f', POPT_ARG_NONE, &opt.file, 0, "Store all message data in a file", "filename"}, + { "histogram", 'h', POPT_ARG_NONE, &opt.histogram, 0, "Store histogram in file", "filename"}, { "length", 'l', POPT_ARG_INT|POPT_ARGFLAG_SHOW_DEFAULT, &opt.length, 0, "The length of generated messages", "bytes"}, { "userhist", 'u', POPT_ARG_NONE, &opt.userhist, 0, "Generate histogram from userspace timestamps"}, POPT_AUTOHELP @@ -629,6 +646,7 @@ int parse_options(int argc, const char *argv[]) { int c; poptContext optCon; /* context for parsing command-line options */ + void *local = talloc_new (NULL); optCon = poptGetContext(NULL, argc, argv, optionsTable, 0); //poptSetOtherOptionHelp(optCon, "[OPTIONS]* "); @@ -639,16 +657,6 @@ int parse_options(int argc, const char *argv[]) case 'd': num_interfaces++; break; - case 'f': - opt.file = fopen(poptGetOptArg(optCon), "w"); - if (!opt.file) - error(1, errno, "fopen: %s", poptGetOptArg(optCon)); - break; - case 'h': - opt.histogram = fopen(poptGetOptArg(optCon), "w"); - if (!opt.histogram) - error(1, errno, "fopen: %s", poptGetOptArg(optCon)); - break; } } if (c < -1) @@ -662,11 +670,37 @@ int parse_options(int argc, const char *argv[]) if (opt.oneattime && opt.period_us) error(1, 0, "oneattime and period cannot be specified at the same time"); - poptFreeContext(optCon); + if (opt.name && opt.file) { + char *f = talloc_asprintf(local, "%s-msgs.txt", opt.name); + opt.f_msgs = fopen(f, "w"); + if (!opt.f_msgs) + error(1, errno, "fopen: %s", f); + } + + if (opt.name && opt.histogram) { + char *f = talloc_asprintf(local, "%s-hist.txt", opt.name); + opt.f_hist = fopen(f, "w"); + if (!opt.f_hist) + error(1, errno, "fopen: %s", f); + } + + if (opt.name) { + char *f = talloc_asprintf(local, "%s-stat.txt", opt.name); + opt.f_stat = fopen(f, "w"); + if (!opt.f_stat) + error(1, errno, "fopen: %s", f); + } + poptFreeContext(optCon); + talloc_free(local); return 0; } +void print_progress() +{ + printf("\rSent %5d, in progress %5d", count, msg_in_progress); + fflush(stdout); +} int main(int argc, const char *argv[]) { @@ -696,10 +730,10 @@ int main(int argc, const char *argv[]) error(1, errno, "pipe fcntl"); init_ftrace(); - + pthread_create(&thread, 0, measure_thread, NULL); - struct timespec next, now, diff; + struct timespec next, now, diff, allsent = {0,0}; clock_gettime(CLOCK_MONOTONIC, &next); int completed = 0; while (!finish_flag && (opt.count == 0 || completed < opt.count)) { @@ -716,23 +750,32 @@ int main(int argc, const char *argv[]) if (ret < sizeof(mi)) error(1, errno, "read completion returned %d", ret); if (opt.file) - msg_info_print(opt.file, mi); + msg_info_print(opt.f_msgs, mi); msg_info_free(mi); completed++; } clock_gettime(CLOCK_MONOTONIC, &now); if (timespec_subtract(&diff, &next, &now)) { - printf("\rMessage %d", count); - fflush(stdout); - next.tv_nsec += 100000000; + print_progress(); + next.tv_nsec += 100000000; while (next.tv_nsec >= 1000000000) { next.tv_nsec -= 1000000000; next.tv_sec++; } } + if (opt.count != 0 && count >= opt.count) { + if (allsent.tv_sec == 0) + allsent = now; + timespec_subtract(&diff, &now, &allsent); + if (diff.tv_sec >= 1) + finish_flag = 1; + } } - printf("\rMessage %d\n", count); + print_progress(); + printf("\n"); + + stats.lost = msg_in_progress; pthread_join(thread, NULL); @@ -740,11 +783,25 @@ int main(int argc, const char *argv[]) close(completion_pipe[1]); if (opt.histogram) { - histogram_fprint(&histogram, opt.histogram); - fclose(opt.histogram); + histogram_fprint(&histogram, opt.f_hist); + fclose(opt.f_hist); } if (opt.file) - fclose(opt.file); + fclose(opt.f_msgs); + + + fprintf(opt.f_stat, "sent=%d\n", count); + fprintf(opt.f_stat, "overrun=%d\n", stats.overrun); + if (stats.overrun) + printf("overrun=%d\n", stats.overrun); + fprintf(opt.f_stat, "enobufs=%d\n", stats.enobufs); + if (stats.enobufs) + printf("enobufs=%d\n", stats.enobufs); + fprintf(opt.f_stat, "lost=%d\n", stats.lost); + if (stats.lost) + printf("lost=%d\n", stats.lost); + + fclose(opt.f_stat); return 0; }