309145587f
Using thread's tsc count instead of performance counter Refs: #1025 Change-Id: I1d7a18f1c52f1d52087002d31818638a6b206014
104 lines
1.9 KiB
C
104 lines
1.9 KiB
C
#include <stdio.h>
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#include <stdlib.h>
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#include <langinfo.h>
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#include <locale.h>
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#include <sys/mman.h>
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#include "perftool.h"
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#define IS_GROUP 1
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/* perf flow: Start -> calc -> Stop -> Read */
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void
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usage()
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{
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printf("Usage: perf_case_a mode cntr_num [<type> <config>]...\n");
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exit(1);
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}
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int
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main(int argc, char **argv)
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{
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long fds[PERF_CNTR_NUM];
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long long counts[PERF_CNTR_NUM + 1];
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int types[PERF_CNTR_NUM];
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int configs[PERF_CNTR_NUM];
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int group_fd = -1;
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int cntr_num;
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int mode;
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int i;
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if (argc < 3) {
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printf("ERROR: Too few arguments.\n");
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usage();
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}
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mode = atoi(argv[1]);
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cntr_num = atoi(argv[2]);
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/* perse args */
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if (argc < cntr_num * 2 + 2) {
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printf("ERROR: Too few arguments.\n");
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usage();
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}
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for (i = 0; i < cntr_num; i++) {
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types[i] = atoi(argv[i * 2 + 3]);
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configs[i] = atoi(argv[i * 2 + 4]);
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}
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/* perf_event_open */
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for (i = 0; i < cntr_num; i++) {
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fds[i] = pe_opener(group_fd, mode,
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types[i], configs[i], IS_GROUP);
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if (group_fd == -1) {
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group_fd = fds[i];
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}
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}
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/* perf_start */
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PERF_BEGIN(group_fd, PERF_IOC_FLAG_GROUP);
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/* calc */
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calc_task();
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/* perf_end */
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PERF_END(group_fd, PERF_IOC_FLAG_GROUP);
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/* calc (not counted) */
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calc_task();
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/* perf_restart */
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PERF_START(group_fd, PERF_IOC_FLAG_GROUP);
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/* calc */
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calc_task();
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/* perf_end and read */
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PERF_END(group_fd, PERF_IOC_FLAG_GROUP);
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PERF_READ(group_fd, counts, sizeof(counts));
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for (i = 0; i < cntr_num; i++) {
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close(fds[i]);
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}
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/* print result */
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for (i = 0; i < counts[0]; i++) {
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if (types[i] == PERF_TYPE_HARDWARE) {
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printf("%s: %16ld\n",
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hw_event_names[configs[i]], counts[i + 1]);
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}
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else if (types[i] == PERF_TYPE_HW_CACHE) {
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printf("%s_%s_%s: %16ld\n",
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id_names[(configs[i] >> 0) & 0xff],
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op_id_names[(configs[i] >> 8) & 0xff],
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result_names[(configs[i] >> 16) & 0xff],
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counts[i + 1]);
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}
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}
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return 0;
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}
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