124 lines
3.2 KiB
C
124 lines
3.2 KiB
C
/* Copyright Joyent, Inc. and other Node contributors. All rights reserved.
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to
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* deal in the Software without restriction, including without limitation the
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* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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* sell copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*/
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#include <sys/types.h>
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#include <sys/param.h>
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#include <sys/resource.h>
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#include <sys/time.h>
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#include <sys/sysctl.h>
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#include <errno.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#undef NANOSEC
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#define NANOSEC 1000000000
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uint64_t uv_hrtime(void) {
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struct timespec ts;
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clock_gettime(CLOCK_MONOTONIC, &ts);
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return (((uint64_t) ts.tv_sec) * NANOSEC + ts.tv_nsec);
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}
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void uv_loadavg(double avg[3]) {
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struct loadavg info;
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size_t size = sizeof(info);
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int which[] = {CTL_VM, VM_LOADAVG};
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if (sysctl(which, 2, &info, &size, NULL, 0) < 0) return;
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avg[0] = (double) info.ldavg[0] / info.fscale;
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avg[1] = (double) info.ldavg[1] / info.fscale;
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avg[2] = (double) info.ldavg[2] / info.fscale;
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}
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int uv_exepath(char* buffer, size_t* size) {
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int mib[4];
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char **argsbuf = NULL;
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char **argsbuf_tmp;
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size_t argsbuf_size = 100U;
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size_t exepath_size;
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pid_t mypid;
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int status = -1;
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if (!buffer || !size) {
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goto out;
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}
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mypid = getpid();
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for (;;) {
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if ((argsbuf_tmp = realloc(argsbuf, argsbuf_size)) == NULL) {
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goto out;
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}
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argsbuf = argsbuf_tmp;
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mib[0] = CTL_KERN;
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mib[1] = KERN_PROC_ARGS;
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mib[2] = mypid;
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mib[3] = KERN_PROC_ARGV;
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if (sysctl(mib, 4, argsbuf, &argsbuf_size, NULL, 0) == 0) {
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break;
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}
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if (errno != ENOMEM) {
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goto out;
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}
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argsbuf_size *= 2U;
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}
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if (argsbuf[0] == NULL) {
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goto out;
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}
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exepath_size = strlen(argsbuf[0]);
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if (exepath_size >= *size) {
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goto out;
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}
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memcpy(buffer, argsbuf[0], exepath_size + 1U);
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*size = exepath_size;
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status = 0;
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out:
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free(argsbuf);
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return status;
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}
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uint64_t uv_get_free_memory(void) {
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struct uvmexp info;
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size_t size = sizeof(info);
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int which[] = {CTL_VM, VM_UVMEXP};
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if (sysctl(which, 2, &info, &size, NULL, 0) < 0) {
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return -1;
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}
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return (uint64_t) info.free * sysconf(_SC_PAGESIZE);
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}
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uint64_t uv_get_total_memory(void) {
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uint64_t info;
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int which[] = {CTL_HW, HW_PHYSMEM64};
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size_t size = sizeof(info);
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if (sysctl(which, 2, &info, &size, NULL, 0) < 0) {
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return -1;
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}
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return (uint64_t) info;
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}
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