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 <dlfcn.h> 29 #include <mach/mach.h> 30 #include <mach/mach_time.h> 31 #include <mach-o/dyld.h> /* _NSGetExecutablePath */ 32 #include <sys/resource.h> 33 #include <sys/sysctl.h> 34 #include <unistd.h> /* sysconf */ 35 36 #include "darwin-stub.h" 37 38 static uv_once_t once = UV_ONCE_INIT; 39 static uint64_t (*time_func)(void); 40 static mach_timebase_info_data_t timebase; 41 42 typedef unsigned char UInt8; 43 44 int uv__platform_loop_init(uv_loop_t* loop) { 45 loop->cf_state = NULL; 46 47 if (uv__kqueue_init(loop)) 48 return UV__ERR(errno); 49 50 return 0; 51 } 52 53 54 void uv__platform_loop_delete(uv_loop_t* loop) { 55 uv__fsevents_loop_delete(loop); 56 } 57 58 59 static void uv__hrtime_init_once(void) { 60 if (KERN_SUCCESS != mach_timebase_info(&timebase)) 61 abort(); 62 63 time_func = (uint64_t (*)(void)) dlsym(RTLD_DEFAULT, "mach_continuous_time"); 64 if (time_func == NULL) 65 time_func = mach_absolute_time; 66 } 67 68 69 uint64_t uv__hrtime(uv_clocktype_t type) { 70 uv_once(&once, uv__hrtime_init_once); 71 return time_func() * timebase.numer / timebase.denom; 72 } 73 74 75 int uv_exepath(char* buffer, size_t* size) { 76 /* realpath(exepath) may be > PATH_MAX so double it to be on the safe side. */ 77 char abspath[PATH_MAX * 2 + 1]; 78 char exepath[PATH_MAX + 1]; 79 uint32_t exepath_size; 80 size_t abspath_size; 81 82 if (buffer == NULL || size == NULL || *size == 0) 83 return UV_EINVAL; 84 85 exepath_size = sizeof(exepath); 86 if (_NSGetExecutablePath(exepath, &exepath_size)) 87 return UV_EIO; 88 89 if (realpath(exepath, abspath) != abspath) 90 return UV__ERR(errno); 91 92 abspath_size = strlen(abspath); 93 if (abspath_size == 0) 94 return UV_EIO; 95 96 *size -= 1; 97 if (*size > abspath_size) 98 *size = abspath_size; 99 100 memcpy(buffer, abspath, *size); 101 buffer[*size] = '\0'; 102 103 return 0; 104 } 105 106 107 uint64_t uv_get_free_memory(void) { 108 vm_statistics_data_t info; 109 mach_msg_type_number_t count = sizeof(info) / sizeof(integer_t); 110 111 if (host_statistics(mach_host_self(), HOST_VM_INFO, 112 (host_info_t)&info, &count) != KERN_SUCCESS) { 113 return UV_EINVAL; /* FIXME(bnoordhuis) Translate error. */ 114 } 115 116 return (uint64_t) info.free_count * sysconf(_SC_PAGESIZE); 117 } 118 119 120 uint64_t uv_get_total_memory(void) { 121 uint64_t info; 122 int which[] = {CTL_HW, HW_MEMSIZE}; 123 size_t size = sizeof(info); 124 125 if (sysctl(which, ARRAY_SIZE(which), &info, &size, NULL, 0)) 126 return UV__ERR(errno); 127 128 return (uint64_t) info; 129 } 130 131 132 uint64_t uv_get_constrained_memory(void) { 133 return 0; /* Memory constraints are unknown. */ 134 } 135 136 137 void uv_loadavg(double avg[3]) { 138 struct loadavg info; 139 size_t size = sizeof(info); 140 int which[] = {CTL_VM, VM_LOADAVG}; 141 142 if (sysctl(which, ARRAY_SIZE(which), &info, &size, NULL, 0) < 0) return; 143 144 avg[0] = (double) info.ldavg[0] / info.fscale; 145 avg[1] = (double) info.ldavg[1] / info.fscale; 146 avg[2] = (double) info.ldavg[2] / info.fscale; 147 } 148 149 150 int uv_resident_set_memory(size_t* rss) { 151 mach_msg_type_number_t count; 152 task_basic_info_data_t info; 153 kern_return_t err; 154 155 count = TASK_BASIC_INFO_COUNT; 156 err = task_info(mach_task_self(), 157 TASK_BASIC_INFO, 158 (task_info_t) &info, 159 &count); 160 (void) &err; 161 /* task_info(TASK_BASIC_INFO) cannot really fail. Anything other than 162 * KERN_SUCCESS implies a libuv bug. 163 */ 164 assert(err == KERN_SUCCESS); 165 *rss = info.resident_size; 166 167 return 0; 168 } 169 170 171 int uv_uptime(double* uptime) { 172 time_t now; 173 struct timeval info; 174 size_t size = sizeof(info); 175 static int which[] = {CTL_KERN, KERN_BOOTTIME}; 176 177 if (sysctl(which, ARRAY_SIZE(which), &info, &size, NULL, 0)) 178 return UV__ERR(errno); 179 180 now = time(NULL); 181 *uptime = now - info.tv_sec; 182 183 return 0; 184 } 185 186 static int uv__get_cpu_speed(uint64_t* speed) { 187 /* IOKit */ 188 void (*pIOObjectRelease)(io_object_t); 189 kern_return_t (*pIOMasterPort)(mach_port_t, mach_port_t*); 190 CFMutableDictionaryRef (*pIOServiceMatching)(const char*); 191 kern_return_t (*pIOServiceGetMatchingServices)(mach_port_t, 192 CFMutableDictionaryRef, 193 io_iterator_t*); 194 io_service_t (*pIOIteratorNext)(io_iterator_t); 195 CFTypeRef (*pIORegistryEntryCreateCFProperty)(io_registry_entry_t, 196 CFStringRef, 197 CFAllocatorRef, 198 IOOptionBits); 199 200 /* CoreFoundation */ 201 CFStringRef (*pCFStringCreateWithCString)(CFAllocatorRef, 202 const char*, 203 CFStringEncoding); 204 CFStringEncoding (*pCFStringGetSystemEncoding)(void); 205 UInt8 *(*pCFDataGetBytePtr)(CFDataRef); 206 CFIndex (*pCFDataGetLength)(CFDataRef); 207 void (*pCFDataGetBytes)(CFDataRef, CFRange, UInt8*); 208 void (*pCFRelease)(CFTypeRef); 209 210 void* core_foundation_handle; 211 void* iokit_handle; 212 int err; 213 214 kern_return_t kr; 215 mach_port_t mach_port; 216 io_iterator_t it; 217 io_object_t service; 218 219 mach_port = 0; 220 221 err = UV_ENOENT; 222 core_foundation_handle = dlopen("/System/Library/Frameworks/" 223 "CoreFoundation.framework/" 224 "CoreFoundation", 225 RTLD_LAZY | RTLD_LOCAL); 226 iokit_handle = dlopen("/System/Library/Frameworks/IOKit.framework/" 227 "IOKit", 228 RTLD_LAZY | RTLD_LOCAL); 229 230 if (core_foundation_handle == NULL || iokit_handle == NULL) 231 goto out; 232 233 #define V(handle, symbol) \ 234 do { \ 235 *(void **)(&p ## symbol) = dlsym((handle), #symbol); \ 236 if (p ## symbol == NULL) \ 237 goto out; \ 238 } \ 239 while (0) 240 V(iokit_handle, IOMasterPort); 241 V(iokit_handle, IOServiceMatching); 242 V(iokit_handle, IOServiceGetMatchingServices); 243 V(iokit_handle, IOIteratorNext); 244 V(iokit_handle, IOObjectRelease); 245 V(iokit_handle, IORegistryEntryCreateCFProperty); 246 V(core_foundation_handle, CFStringCreateWithCString); 247 V(core_foundation_handle, CFStringGetSystemEncoding); 248 V(core_foundation_handle, CFDataGetBytePtr); 249 V(core_foundation_handle, CFDataGetLength); 250 V(core_foundation_handle, CFDataGetBytes); 251 V(core_foundation_handle, CFRelease); 252 #undef V 253 254 #define S(s) pCFStringCreateWithCString(NULL, (s), kCFStringEncodingUTF8) 255 256 kr = pIOMasterPort(MACH_PORT_NULL, &mach_port); 257 assert(kr == KERN_SUCCESS); 258 CFMutableDictionaryRef classes_to_match 259 = pIOServiceMatching("IOPlatformDevice"); 260 kr = pIOServiceGetMatchingServices(mach_port, classes_to_match, &it); 261 assert(kr == KERN_SUCCESS); 262 service = pIOIteratorNext(it); 263 264 CFStringRef device_type_str = S("device_type"); 265 CFStringRef clock_frequency_str = S("clock-frequency"); 266 267 while (service != 0) { 268 CFDataRef data; 269 data = pIORegistryEntryCreateCFProperty(service, 270 device_type_str, 271 NULL, 272 0); 273 if (data) { 274 const UInt8* raw = pCFDataGetBytePtr(data); 275 if (strncmp((char*)raw, "cpu", 3) == 0 || 276 strncmp((char*)raw, "processor", 9) == 0) { 277 CFDataRef freq_ref; 278 freq_ref = pIORegistryEntryCreateCFProperty(service, 279 clock_frequency_str, 280 NULL, 281 0); 282 if (freq_ref) { 283 const UInt8* freq_ref_ptr = pCFDataGetBytePtr(freq_ref); 284 CFIndex len = pCFDataGetLength(freq_ref); 285 if (len == 8) 286 memcpy(speed, freq_ref_ptr, 8); 287 else if (len == 4) { 288 uint32_t v; 289 memcpy(&v, freq_ref_ptr, 4); 290 *speed = v; 291 } else { 292 *speed = 0; 293 } 294 295 pCFRelease(freq_ref); 296 pCFRelease(data); 297 break; 298 } 299 } 300 pCFRelease(data); 301 } 302 303 service = pIOIteratorNext(it); 304 } 305 306 pIOObjectRelease(it); 307 308 err = 0; 309 310 if (device_type_str != NULL) 311 pCFRelease(device_type_str); 312 if (clock_frequency_str != NULL) 313 pCFRelease(clock_frequency_str); 314 315 out: 316 if (core_foundation_handle != NULL) 317 dlclose(core_foundation_handle); 318 319 if (iokit_handle != NULL) 320 dlclose(iokit_handle); 321 322 mach_port_deallocate(mach_task_self(), mach_port); 323 324 return err; 325 } 326 327 int uv_cpu_info(uv_cpu_info_t** cpu_infos, int* count) { 328 unsigned int ticks = (unsigned int)sysconf(_SC_CLK_TCK), 329 multiplier = ((uint64_t)1000L / ticks); 330 char model[512]; 331 size_t size; 332 unsigned int i; 333 natural_t numcpus; 334 mach_msg_type_number_t msg_type; 335 processor_cpu_load_info_data_t *info; 336 uv_cpu_info_t* cpu_info; 337 uint64_t cpuspeed; 338 int err; 339 340 size = sizeof(model); 341 if (sysctlbyname("machdep.cpu.brand_string", &model, &size, NULL, 0) && 342 sysctlbyname("hw.model", &model, &size, NULL, 0)) { 343 return UV__ERR(errno); 344 } 345 346 err = uv__get_cpu_speed(&cpuspeed); 347 if (err < 0) 348 return err; 349 350 if (host_processor_info(mach_host_self(), PROCESSOR_CPU_LOAD_INFO, &numcpus, 351 (processor_info_array_t*)&info, 352 &msg_type) != KERN_SUCCESS) { 353 return UV_EINVAL; /* FIXME(bnoordhuis) Translate error. */ 354 } 355 356 *cpu_infos = uv__malloc(numcpus * sizeof(**cpu_infos)); 357 if (!(*cpu_infos)) { 358 vm_deallocate(mach_task_self(), (vm_address_t)info, msg_type); 359 return UV_ENOMEM; 360 } 361 362 *count = numcpus; 363 364 for (i = 0; i < numcpus; i++) { 365 cpu_info = &(*cpu_infos)[i]; 366 367 cpu_info->cpu_times.user = (uint64_t)(info[i].cpu_ticks[0]) * multiplier; 368 cpu_info->cpu_times.nice = (uint64_t)(info[i].cpu_ticks[3]) * multiplier; 369 cpu_info->cpu_times.sys = (uint64_t)(info[i].cpu_ticks[1]) * multiplier; 370 cpu_info->cpu_times.idle = (uint64_t)(info[i].cpu_ticks[2]) * multiplier; 371 cpu_info->cpu_times.irq = 0; 372 373 cpu_info->model = uv__strdup(model); 374 cpu_info->speed = cpuspeed/1000000; 375 } 376 vm_deallocate(mach_task_self(), (vm_address_t)info, msg_type); 377 378 return 0; 379 } 380