85 lines
2.2 KiB
C
85 lines
2.2 KiB
C
#include <sys/stat.h>
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#include <stdio.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include "utils.c"
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#include "repetition_tester.c"
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void read_file_with_fread(struct repetitor *repetitor, uint8_t *buffer, uint64_t buffer_size, char *filename) {
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FILE *file = fopen(filename, "r");
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uint64_t read_amount = 0;
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while (read_amount < buffer_size) {
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repetitor_measure_start(repetitor);
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int result = fread(&buffer[read_amount], 1, buffer_size - read_amount, file);
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repetitor_measure_stop(repetitor, result > 0 ? result : 0);
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if (result <= 0) {
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printf("ERROR: Failed to read from file\n");
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break;
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}
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read_amount += result;
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}
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fclose(file);
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}
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void read_file_with_read(struct repetitor *repetitor, uint8_t *buffer, uint64_t buffer_size, char *filename) {
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int file = open(filename, O_RDONLY);
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uint64_t read_amount = 0;
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while (read_amount < buffer_size) {
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repetitor_measure_start(repetitor);
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int result = read(file, &buffer[read_amount], buffer_size - read_amount);
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repetitor_measure_stop(repetitor, result > 0 ? result : 0);
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if (result <= 0) {
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printf("ERROR: Failed to read from file\n");
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break;
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}
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read_amount += result;
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}
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close(file);
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}
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int main_test_read_file(char *filename) {
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typedef void (*read_file_b)(struct repetitor *repetitor, uint8_t *buffer, uint64_t buffer_size, char *filename);
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struct testcase {
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char *name;
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read_file_b cb;
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};
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struct testcase cases[] = {
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{ .name = "read()", .cb = read_file_with_read },
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{ .name = "fread()", .cb = read_file_with_fread },
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};
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struct repetitor repetitor = {};
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repetitor_init(&repetitor);
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printf("CPU Frequency: %ldHz (~%.2fGHz)\n", repetitor.cpu_freq, (float)repetitor.cpu_freq/(1000*1000*1000));
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uint64_t file_size = get_file_size(filename);
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uint8_t *buffer = malloc(sizeof(uint8_t) * file_size);
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while (repeat_cycle_times(&repetitor, 3)) {
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for (int i = 0; i < ARRAY_LEN(cases); i++) {
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struct testcase *testcase = &cases[i];
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repetitor_clear(&repetitor);
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while (repetitor_repeat(&repetitor, 1)) {
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repetitor_start(&repetitor);
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testcase->cb(&repetitor, buffer, file_size, filename);
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repetitor_stop(&repetitor);
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}
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repetitor_print_results_label(&repetitor, testcase->name);
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}
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}
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return 0;
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}
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