81 lines
1.6 KiB
C
81 lines
1.6 KiB
C
#define _GNU_SOURCE /* See feature_test_macros(7) */
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#include <stdio.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <stdint.h>
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#include <sys/syscall.h> /* For SYS_xxx definitions */
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#include <sched.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <string.h>
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#include <time.h>
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#include "util.h"
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/* Messaging */
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enum test_loglevel test_loglevel = TEST_LOGLEVEL_DEBUG;
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int print_cpu_last_executed_on(const char *name) {
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char fn[256];
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char *result;
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pid_t tid = syscall(SYS_gettid);
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int fd;
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int offset;
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int mpi_errno = 0;
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int rc;
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sprintf(fn, "/proc/%d/task/%d/stat", getpid(), (int)tid);
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//printf("fn=%s\n", fn);
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fd = open(fn, O_RDONLY);
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if (fd == -1) {
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printf("open() failed\n");
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goto fn_fail;
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}
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result = malloc(65536);
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if (result == NULL) {
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printf("malloc() failed");
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goto fn_fail;
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}
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int amount = 0;
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offset = 0;
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while (1) {
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amount = read(fd, result + offset, 65536);
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// printf("amount=%d\n", amount);
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if (amount == -1) {
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printf("read() failed");
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goto fn_fail;
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}
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if (amount == 0) {
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goto eof;
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}
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offset += amount;
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}
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eof:;
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//printf("result:%s\n", result);
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char *next_delim = result;
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char *field;
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int i;
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for (i = 0; i < 39; i++) {
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field = strsep(&next_delim, " ");
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}
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int cpu = sched_getcpu();
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if (cpu == -1) {
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printf("getpu() failed\n");
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goto fn_fail;
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}
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rc = syscall(732);
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printf("%s: pmi_rank=%02d,os=%s,stat-cpu=%02d,sched_getcpu=%02d,tid=%d\n", name, atoi(getenv("PMI_RANK")), rc == -1 ? "lin" : "mck", atoi(field), cpu, tid); fflush(stdout);
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fn_exit:
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free(result);
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return mpi_errno;
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fn_fail:
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mpi_errno = -1;
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goto fn_exit;
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}
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