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/* Copyright libuv project contributors. All rights reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to
* deal in the Software without restriction, including without limitation the
* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
* sell copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE.
*/
#include "uv.h"
#include "internal.h"
#include <sys/sysinfo.h>
#include <unistd.h>
int uv_uptime(double* uptime) {
struct sysinfo info;
if (sysinfo(&info) < 0)
return UV__ERR(errno);
*uptime = info.uptime;
return 0;
}
int uv_resident_set_memory(size_t* rss) {
char buf[1024];
const char* s;
long val;
int rc;
int i;
struct sysinfo si;
/* rss: 24th element */
rc = uv__slurp("/proc/self/stat", buf, sizeof(buf));
if (rc < 0)
return rc;
/* find the last ')' */
s = strrchr(buf, ')');
if (s == NULL)
goto err;
for (i = 1; i <= 22; i++) {
s = strchr(s + 1, ' ');
if (s == NULL)
goto err;
}
errno = 0;
val = strtol(s, NULL, 10);
if (val < 0 || errno != 0)
goto err;
do
rc = sysinfo(&si);
while (rc == -1 && errno == EINTR);
if (rc == -1)
return UV__ERR(errno);
*rss = val * si.mem_unit;
return 0;
err:
return UV_EINVAL;
}
int uv_cpu_info(uv_cpu_info_t** cpu_infos, int* count) {
/* FIXME: read /proc/stat? */
*cpu_infos = NULL;
*count = 0;
return UV_ENOSYS;
}
uint64_t uv_get_constrained_memory(void) {
return 0; /* Memory constraints are unknown. */
}
uint64_t uv_get_available_memory(void) {
return uv_get_free_memory();
}
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