1 /* Copyright Joyent, Inc. and other Node contributors. All rights reserved. 2 * Permission is hereby granted, free of charge, to any person obtaining a copy 3 * of this software and associated documentation files (the "Software"), to 4 * deal in the Software without restriction, including without limitation the 5 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or 6 * sell copies of the Software, and to permit persons to whom the Software is 7 * furnished to do so, subject to the following conditions: 8 * 9 * The above copyright notice and this permission notice shall be included in 10 * all copies or substantial portions of the Software. 11 * 12 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 13 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 14 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 15 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 16 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 17 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS 18 * IN THE SOFTWARE. 19 */ 20 21 #include "uv.h" 22 #include "internal.h" 23 24 #include <assert.h> 25 #include <stdint.h> 26 #include <errno.h> 27 28 #include <mach/mach.h> 29 #include <mach/mach_time.h> 30 #include <mach-o/dyld.h> /* _NSGetExecutablePath */ 31 #include <sys/resource.h> 32 #include <sys/sysctl.h> 33 #include <unistd.h> /* sysconf */ 34 35 36 int uv__platform_loop_init(uv_loop_t* loop) { 37 loop->cf_state = NULL; 38 39 if (uv__kqueue_init(loop)) 40 return UV__ERR(errno); 41 42 return 0; 43 } 44 45 46 void uv__platform_loop_delete(uv_loop_t* loop) { 47 uv__fsevents_loop_delete(loop); 48 } 49 50 51 uint64_t uv__hrtime(uv_clocktype_t type) { 52 static mach_timebase_info_data_t info; 53 54 if ((ACCESS_ONCE(uint32_t, info.numer) == 0 || 55 ACCESS_ONCE(uint32_t, info.denom) == 0) && 56 mach_timebase_info(&info) != KERN_SUCCESS) 57 abort(); 58 59 return mach_absolute_time() * info.numer / info.denom; 60 } 61 62 63 int uv_exepath(char* buffer, size_t* size) { 64 /* realpath(exepath) may be > PATH_MAX so double it to be on the safe side. */ 65 char abspath[PATH_MAX * 2 + 1]; 66 char exepath[PATH_MAX + 1]; 67 uint32_t exepath_size; 68 size_t abspath_size; 69 70 if (buffer == NULL || size == NULL || *size == 0) 71 return UV_EINVAL; 72 73 exepath_size = sizeof(exepath); 74 if (_NSGetExecutablePath(exepath, &exepath_size)) 75 return UV_EIO; 76 77 if (realpath(exepath, abspath) != abspath) 78 return UV__ERR(errno); 79 80 abspath_size = strlen(abspath); 81 if (abspath_size == 0) 82 return UV_EIO; 83 84 *size -= 1; 85 if (*size > abspath_size) 86 *size = abspath_size; 87 88 memcpy(buffer, abspath, *size); 89 buffer[*size] = '\0'; 90 91 return 0; 92 } 93 94 95 uint64_t uv_get_free_memory(void) { 96 vm_statistics_data_t info; 97 mach_msg_type_number_t count = sizeof(info) / sizeof(integer_t); 98 99 if (host_statistics(mach_host_self(), HOST_VM_INFO, 100 (host_info_t)&info, &count) != KERN_SUCCESS) { 101 return UV_EINVAL; /* FIXME(bnoordhuis) Translate error. */ 102 } 103 104 return (uint64_t) info.free_count * sysconf(_SC_PAGESIZE); 105 } 106 107 108 uint64_t uv_get_total_memory(void) { 109 uint64_t info; 110 int which[] = {CTL_HW, HW_MEMSIZE}; 111 size_t size = sizeof(info); 112 113 if (sysctl(which, ARRAY_SIZE(which), &info, &size, NULL, 0)) 114 return UV__ERR(errno); 115 116 return (uint64_t) info; 117 } 118 119 120 uint64_t uv_get_constrained_memory(void) { 121 return 0; /* Memory constraints are unknown. */ 122 } 123 124 125 void uv_loadavg(double avg[3]) { 126 struct loadavg info; 127 size_t size = sizeof(info); 128 int which[] = {CTL_VM, VM_LOADAVG}; 129 130 if (sysctl(which, ARRAY_SIZE(which), &info, &size, NULL, 0) < 0) return; 131 132 avg[0] = (double) info.ldavg[0] / info.fscale; 133 avg[1] = (double) info.ldavg[1] / info.fscale; 134 avg[2] = (double) info.ldavg[2] / info.fscale; 135 } 136 137 138 int uv_resident_set_memory(size_t* rss) { 139 mach_msg_type_number_t count; 140 task_basic_info_data_t info; 141 kern_return_t err; 142 143 count = TASK_BASIC_INFO_COUNT; 144 err = task_info(mach_task_self(), 145 TASK_BASIC_INFO, 146 (task_info_t) &info, 147 &count); 148 (void) &err; 149 /* task_info(TASK_BASIC_INFO) cannot really fail. Anything other than 150 * KERN_SUCCESS implies a libuv bug. 151 */ 152 assert(err == KERN_SUCCESS); 153 *rss = info.resident_size; 154 155 return 0; 156 } 157 158 159 int uv_uptime(double* uptime) { 160 time_t now; 161 struct timeval info; 162 size_t size = sizeof(info); 163 static int which[] = {CTL_KERN, KERN_BOOTTIME}; 164 165 if (sysctl(which, ARRAY_SIZE(which), &info, &size, NULL, 0)) 166 return UV__ERR(errno); 167 168 now = time(NULL); 169 *uptime = now - info.tv_sec; 170 171 return 0; 172 } 173 174 int uv_cpu_info(uv_cpu_info_t** cpu_infos, int* count) { 175 unsigned int ticks = (unsigned int)sysconf(_SC_CLK_TCK), 176 multiplier = ((uint64_t)1000L / ticks); 177 char model[512]; 178 uint64_t cpuspeed; 179 size_t size; 180 unsigned int i; 181 natural_t numcpus; 182 mach_msg_type_number_t msg_type; 183 processor_cpu_load_info_data_t *info; 184 uv_cpu_info_t* cpu_info; 185 186 size = sizeof(model); 187 if (sysctlbyname("machdep.cpu.brand_string", &model, &size, NULL, 0) && 188 sysctlbyname("hw.model", &model, &size, NULL, 0)) { 189 return UV__ERR(errno); 190 } 191 192 size = sizeof(cpuspeed); 193 if (sysctlbyname("hw.cpufrequency", &cpuspeed, &size, NULL, 0)) 194 return UV__ERR(errno); 195 196 if (host_processor_info(mach_host_self(), PROCESSOR_CPU_LOAD_INFO, &numcpus, 197 (processor_info_array_t*)&info, 198 &msg_type) != KERN_SUCCESS) { 199 return UV_EINVAL; /* FIXME(bnoordhuis) Translate error. */ 200 } 201 202 *cpu_infos = uv__malloc(numcpus * sizeof(**cpu_infos)); 203 if (!(*cpu_infos)) { 204 vm_deallocate(mach_task_self(), (vm_address_t)info, msg_type); 205 return UV_ENOMEM; 206 } 207 208 *count = numcpus; 209 210 for (i = 0; i < numcpus; i++) { 211 cpu_info = &(*cpu_infos)[i]; 212 213 cpu_info->cpu_times.user = (uint64_t)(info[i].cpu_ticks[0]) * multiplier; 214 cpu_info->cpu_times.nice = (uint64_t)(info[i].cpu_ticks[3]) * multiplier; 215 cpu_info->cpu_times.sys = (uint64_t)(info[i].cpu_ticks[1]) * multiplier; 216 cpu_info->cpu_times.idle = (uint64_t)(info[i].cpu_ticks[2]) * multiplier; 217 cpu_info->cpu_times.irq = 0; 218 219 cpu_info->model = uv__strdup(model); 220 cpu_info->speed = cpuspeed/1000000; 221 } 222 vm_deallocate(mach_task_self(), (vm_address_t)info, msg_type); 223 224 return 0; 225 } 226