/* This is the default screen, it uses only target-independent
counters defined in the Linux header file. */
static screen_t* default_screen(const struct option* options)
{
screen_t* s = new_screen("default", "Screen by default", 1);
/* setup counters */
add_counter_by_value(s, "CYCLE", PERF_COUNT_HW_CPU_CYCLES, PERF_TYPE_HARDWARE);
add_counter_by_value(s, "INSN", PERF_COUNT_HW_INSTRUCTIONS, PERF_TYPE_HARDWARE);
add_counter_by_value(s, "MISS", PERF_COUNT_HW_CACHE_MISSES, PERF_TYPE_HARDWARE);
add_counter_by_value(s, "BR", PERF_COUNT_HW_BRANCH_MISSES, PERF_TYPE_HARDWARE);
add_counter_by_value(s, "BUS", PERF_COUNT_HW_BUS_CYCLES, PERF_TYPE_HARDWARE);
/* add columns */
add_column(s, " %CPU", "%5.1f", "Total CPU usage", "CPU_TOT");
add_column(s, " %SYS", "%5.1f", "System CPU usage", "CPU_SYS");
add_column(s, " P", " %2.0f", "Processor where last seen", "PROC_ID");
if (!options->show_threads) add_column(s, " #TH", " %2.0f", "Number of threads in process", "NUM_THREADS");
add_column(s, " Mcycle", "%8.2f", "Cycles (millions)",
"delta(CYCLE) / 1e6");
add_column(s, " Minstr", "%8.2f", "Instructions (millions)",
"delta(INSN) / 1e6");
add_column(s, " IPC", " %4.2f", "Executed instructions per cycle",
"delta(INSN)/delta(CYCLE)");
add_column(s, " %MISS", "%6.2f", "Cache miss per 100 instructions",
"100*delta(MISS)/delta(INSN)");
add_column(s, " %BMIS", "%6.2f", "Mispredicted branches per 100 instructions",
"100*delta(BR)/delta(INSN)");
add_column(s, " %BUS", "%5.1f", "Bus cycles per executed instruction",
"delta(BUS)/delta(INSN)");
return s;
}
void init() {
screen = new_screen();
int x_pos = screen->max_x/2;
int y_pos = screen->max_y/2;
snake = new_snake(x_pos, y_pos);
move_list = new_move_list();
int i;
food_list = new_food_list();
for(i = 0; i < FOOD_COUNT; i++) {
add_food(screen->max_x, screen->max_y, food_list);
}
}
static screen_t* branch_pred_screen()
{
screen_t* s = new_screen("branch", "Branch prediction statistics", 1);
/* setup counters */
add_counter_by_value(s, "INSTR", PERF_COUNT_HW_INSTRUCTIONS, PERF_TYPE_HARDWARE);
add_counter_by_value(s, "BR", PERF_COUNT_HW_BRANCH_INSTRUCTIONS, PERF_TYPE_HARDWARE);
add_counter_by_value(s, "BMISS", PERF_COUNT_HW_BRANCH_MISSES, PERF_TYPE_HARDWARE);
/* add columns */
add_column(s, " %CPU", " %5.1f", "CPU usage", "CPU_TOT");
add_column(s, " %MIS/I", " %6.2f",
"Mispredictions per 100 instructions",
"100 * delta(BMISS) / delta(INSTR)");
add_column(s, " %MISP", " %5.2f",
"Mispredictions per 100 branch instructions",
"100 * delta(BMISS) / delta(BR)");
add_column(s, " %BR/I", " %5.1f",
"Proportion of branch instructions",
"100 * delta(BR) / delta(INSTR)");
return s;
}
int main(int argc, char *argv[]) {
signal(SIGINT, sighandler);
if (argc > 1) {
#ifdef DEBUG
print_debug("Got file argument: %s", argv[1]);
#endif
FILE *file = fopen(argv[1], "r");
if (file == NULL) {
print_error("Could not open file for reading: %s", argv[1]);
exit(EXIT_FAILURE);
}
struct matrix *mat = new_matrix(4, 1);
screen s = new_screen();
struct matrix *trans_mat = new_matrix(4,4);
synchronize_variables(file, trans_mat, mat, s);
parse_file(1);
free_variables();
exit(EXIT_SUCCESS);
}
printf("Usage: ./main [script-file]\n");
return 0;
}
