src/intel/perf/intel_perf_common.c

/*
 * Copyright 2024 Intel Corporation
 * SPDX-License-Identifier: MIT
 */

#include "intel_perf_common.h"

#include <errno.h>
#include <fcntl.h>
#include <stdlib.h>
#include <unistd.h>

bool
read_file_uint64(const char *file, uint64_t *val)
{
    char buf[32];
    int fd, n;

    fd = open(file, 0);
    if (fd < 0)
       return false;
    while ((n = read(fd, buf, sizeof (buf) - 1)) < 0 &&
           errno == EINTR);
    close(fd);
    if (n < 0)
       return false;

    buf[n] = '\0';
    *val = strtoull(buf, NULL, 0);

    return true;
}