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
uv__platform_loop_init(uv_loop_t * loop)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
uv__platform_loop_delete(uv_loop_t * loop)54 void uv__platform_loop_delete(uv_loop_t* loop) {
55 uv__fsevents_loop_delete(loop);
56 }
57
58
uv__hrtime_init_once(void)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
uv__hrtime(uv_clocktype_t type)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
uv_exepath(char * buffer,size_t * size)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
uv_get_free_memory(void)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
uv_get_total_memory(void)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
uv_get_constrained_memory(void)132 uint64_t uv_get_constrained_memory(void) {
133 return 0; /* Memory constraints are unknown. */
134 }
135
136
uv_loadavg(double avg[3])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
uv_resident_set_memory(size_t * rss)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
uv_uptime(double * uptime)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
uv__get_cpu_speed(uint64_t * speed)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
uv_cpu_info(uv_cpu_info_t ** cpu_infos,int * count)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