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openbsd.c
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openbsd.c
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/* Copyright Joyent, Inc. and other Node 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 <sys/types.h>
#include <sys/param.h>
#include <sys/resource.h>
#include <sys/time.h>
#include <sys/sysctl.h>
#include <errno.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#undef NANOSEC
#define NANOSEC 1000000000
uint64_t uv_hrtime(void) {
struct timespec ts;
clock_gettime(CLOCK_MONOTONIC, &ts);
return (ts.tv_sec * NANOSEC + ts.tv_nsec);
}
void uv_loadavg(double avg[3]) {
struct loadavg info;
size_t size = sizeof(info);
int which[] = {CTL_VM, VM_LOADAVG};
if (sysctl(which, 2, &info, &size, NULL, 0) < 0) return;
avg[0] = (double) info.ldavg[0] / info.fscale;
avg[1] = (double) info.ldavg[1] / info.fscale;
avg[2] = (double) info.ldavg[2] / info.fscale;
}
int uv_exepath(char* buffer, size_t* size) {
int mib[4];
char **argsbuf = NULL;
char **argsbuf_tmp;
size_t argsbuf_size = 100U;
size_t exepath_size;
pid_t mypid;
int status = -1;
if (!buffer || !size) {
goto out;
}
mypid = getpid();
for (;;) {
if ((argsbuf_tmp = realloc(argsbuf, argsbuf_size)) == NULL) {
goto out;
}
argsbuf = argsbuf_tmp;
mib[0] = CTL_KERN;
mib[1] = KERN_PROC_ARGS;
mib[2] = mypid;
mib[3] = KERN_PROC_ARGV;
if (sysctl(mib, 4, argsbuf, &argsbuf_size, NULL, 0) == 0) {
break;
}
if (errno != ENOMEM) {
goto out;
}
argsbuf_size *= 2U;
}
if (argsbuf[0] == NULL) {
goto out;
}
exepath_size = strlen(argsbuf[0]);
if (exepath_size >= *size) {
goto out;
}
memcpy(buffer, argsbuf[0], exepath_size + 1U);
*size = exepath_size;
status = 0;
out:
free(argsbuf);
return status;
}
uint64_t uv_get_free_memory(void) {
struct uvmexp info;
size_t size = sizeof(info);
int which[] = {CTL_VM, VM_UVMEXP};
if (sysctl(which, 2, &info, &size, NULL, 0) < 0) {
return -1;
}
return (uint64_t) info.free * sysconf(_SC_PAGESIZE);
}
uint64_t uv_get_total_memory(void) {
uint64_t info;
int which[] = {CTL_HW, HW_PHYSMEM64};
size_t size = sizeof(info);
if (sysctl(which, 2, &info, &size, NULL, 0) < 0) {
return -1;
}
return (uint64_t) info;
}