1/* Copyright libuv contributors. All rights reserved. 2 * 3 * Permission is hereby granted, free of charge, to any person obtaining a copy 4 * of this software and associated documentation files (the "Software"), to 5 * deal in the Software without restriction, including without limitation the 6 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or 7 * sell copies of the Software, and to permit persons to whom the Software is 8 * furnished to do so, subject to the following conditions: 9 * 10 * The above copyright notice and this permission notice shall be included in 11 * all copies or substantial portions of the Software. 12 * 13 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 14 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 15 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 16 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 17 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 18 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS 19 * IN THE SOFTWARE. 20 */ 21 22#include "uv.h" 23#include "internal.h" 24 25#include <string.h> 26#include <sys/process.h> 27#include <sys/neutrino.h> 28#include <sys/memmsg.h> 29#include <sys/syspage.h> 30#include <sys/procfs.h> 31 32static void 33get_mem_info(uint64_t* totalmem, uint64_t* freemem) { 34 mem_info_t msg; 35 36 memset(&msg, 0, sizeof(msg)); 37 msg.i.type = _MEM_INFO; 38 msg.i.fd = -1; 39 40 if (MsgSend(MEMMGR_COID, &msg.i, sizeof(msg.i), &msg.o, sizeof(msg.o)) 41 != -1) { 42 *totalmem = msg.o.info.__posix_tmi_total; 43 *freemem = msg.o.info.posix_tmi_length; 44 } else { 45 *totalmem = 0; 46 *freemem = 0; 47 } 48} 49 50 51void uv_loadavg(double avg[3]) { 52 avg[0] = 0.0; 53 avg[1] = 0.0; 54 avg[2] = 0.0; 55} 56 57 58int uv_exepath(char* buffer, size_t* size) { 59 char path[PATH_MAX]; 60 if (buffer == NULL || size == NULL || *size == 0) 61 return UV_EINVAL; 62 63 realpath(_cmdname(NULL), path); 64 strlcpy(buffer, path, *size); 65 *size = strlen(buffer); 66 return 0; 67} 68 69 70uint64_t uv_get_free_memory(void) { 71 uint64_t totalmem; 72 uint64_t freemem; 73 get_mem_info(&totalmem, &freemem); 74 return freemem; 75} 76 77 78uint64_t uv_get_total_memory(void) { 79 uint64_t totalmem; 80 uint64_t freemem; 81 get_mem_info(&totalmem, &freemem); 82 return totalmem; 83} 84 85 86uint64_t uv_get_constrained_memory(void) { 87 return 0; 88} 89 90 91uint64_t uv_get_available_memory(void) { 92 return uv_get_free_memory(); 93} 94 95 96int uv_resident_set_memory(size_t* rss) { 97 int fd; 98 procfs_asinfo asinfo; 99 100 fd = uv__open_cloexec("/proc/self/ctl", O_RDONLY); 101 if (fd == -1) 102 return UV__ERR(errno); 103 104 if (devctl(fd, DCMD_PROC_ASINFO, &asinfo, sizeof(asinfo), 0) == -1) { 105 uv__close(fd); 106 return UV__ERR(errno); 107 } 108 109 uv__close(fd); 110 *rss = asinfo.rss; 111 return 0; 112} 113 114 115int uv_uptime(double* uptime) { 116 struct qtime_entry* qtime = _SYSPAGE_ENTRY(_syspage_ptr, qtime); 117 *uptime = (qtime->nsec / 1000000000.0); 118 return 0; 119} 120 121 122int uv_cpu_info(uv_cpu_info_t** cpu_infos, int* count) { 123 struct cpuinfo_entry* cpuinfo = 124 (struct cpuinfo_entry*)_SYSPAGE_ENTRY(_syspage_ptr, new_cpuinfo); 125 size_t cpuinfo_size = _SYSPAGE_ELEMENT_SIZE(_syspage_ptr, cpuinfo); 126 struct strings_entry* strings = _SYSPAGE_ENTRY(_syspage_ptr, strings); 127 int num_cpus = _syspage_ptr->num_cpu; 128 int i; 129 130 *count = num_cpus; 131 *cpu_infos = uv__malloc(num_cpus * sizeof(**cpu_infos)); 132 if (*cpu_infos == NULL) 133 return UV_ENOMEM; 134 135 for (i = 0; i < num_cpus; i++) { 136 (*cpu_infos)[i].model = strdup(&strings->data[cpuinfo->name]); 137 (*cpu_infos)[i].speed = cpuinfo->speed; 138 SYSPAGE_ARRAY_ADJ_OFFSET(cpuinfo, cpuinfo, cpuinfo_size); 139 } 140 141 return 0; 142} 143