node/src/platform_linux.cc at master · gembin/node · GitHub

History

376 lines (311 loc) · 10.9 KB

Raw

100

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

121

122

123

124

125

126

127

128

129

130

131

132

133

134

135

136

137

138

139

140

141

142

143

144

145

146

147

148

149

150

151

152

153

154

155

156

157

158

159

160

161

162

163

164

165

166

167

168

169

170

171

172

173

174

175

176

177

178

179

180

181

182

183

184

185

186

187

188

189

190

191

192

193

194

195

196

197

198

199

200

201

202

203

204

205

206

207

208

209

210

211

212

213

214

215

216

217

218

219

220

221

222

223

224

225

226

227

228

229

230

231

232

233

234

235

236

237

238

239

240

241

242

243

244

245

246

247

248

249

250

251

252

253

254

255

256

257

258

259

260

261

262

263

264

265

266

267

268

269

270

271

272

273

274

275

276

277

278

279

280

281

282

283

284

285

286

287

288

289

290

291

292

293

294

295

296

297

298

299

300

301

302

303

304

305

306

307

308

309

310

311

312

313

314

315

316

317

318

319

320

321

322

323

324

325

326

327

328

329

330

331

332

333

334

335

336

337

338

339

340

341

342

343

344

345

346

347

348

349

350

351

352

353

354

355

356

357

358

359

360

361

362

363

364

365

366

367

368

369

370

371

372

373

374

375

376

// Copyright Joyent, Inc. and other Node contributors.

// Permission is hereby granted, free of charge, to any person obtaining a

// copy of this software and associated documentation files (the

// "Software"), to deal in the Software without restriction, including

// without limitation the rights to use, copy, modify, merge, publish,

// distribute, sublicense, and/or sell copies of the Software, and to permit

// persons to whom the Software is furnished to do so, subject to the

// following conditions:

// The above copyright notice and this permission notice shall be included

// in all copies or substantial portions of the Software.

// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS

// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF

// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN

// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,

// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR

// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE

// USE OR OTHER DEALINGS IN THE SOFTWARE.

#include "node.h"

#include "platform.h"

#include <v8.h>

#include <sys/param.h> // for MAXPATHLEN

#include <sys/sysctl.h>

#include <sys/sysinfo.h>

#include <unistd.h> // getpagesize, sysconf

#include <stdio.h> // sscanf, snprintf

/* SetProcessTitle */

#include <sys/prctl.h>

#include <linux/prctl.h>

#include <stdlib.h> // free

#include <string.h> // strdup

/* GetInterfaceAddresses */

#include <arpa/inet.h>

#include <sys/types.h>

#include <ifaddrs.h>

#include <errno.h>

#include <sys/ioctl.h>

#include <net/if.h>

#if HAVE_MONOTONIC_CLOCK

#include <time.h>

#endif

namespace node {

using namespace v8;

static char buf[MAXPATHLEN + 1];

static char *process_title;

double Platform::prog_start_time = Platform::GetUptime();

char** Platform::SetupArgs(int argc, char *argv[]) {

process_title = strdup(argv[0]);

return argv;

}

void Platform::SetProcessTitle(char *title) {

if (process_title) free(process_title);

process_title = strdup(title);

prctl(PR_SET_NAME, process_title);

}

const char* Platform::GetProcessTitle(int *len) {

if (process_title) {

*len = strlen(process_title);

return process_title;

}

*len = 0;

return NULL;

}

int Platform::GetMemory(size_t *rss, size_t *vsize) {

FILE *f = fopen("/proc/self/stat", "r");

if (!f) return -1;

int itmp;

char ctmp;

size_t page_size = getpagesize();

char *cbuf;

bool foundExeEnd;

/* PID */

if (fscanf(f, "%d ", &itmp) == 0) goto error; /* coverity[secure_coding] */

/* Exec file */

cbuf = buf;

foundExeEnd = false;

if (fscanf (f, "%c", cbuf++) == 0) goto error; // (

while (1) {

if (fscanf(f, "%c", cbuf) == 0) goto error;

if (*cbuf == ')') {

foundExeEnd = true;

} else if (foundExeEnd && *cbuf == ' ') {

*cbuf = 0;

break;

}

cbuf++;

}

/* State */

if (fscanf (f, "%c ", &ctmp) == 0) goto error; /* coverity[secure_coding] */

/* Parent process */

if (fscanf (f, "%d ", &itmp) == 0) goto error; /* coverity[secure_coding] */

/* Process group */

if (fscanf (f, "%d ", &itmp) == 0) goto error; /* coverity[secure_coding] */

/* Session id */

if (fscanf (f, "%d ", &itmp) == 0) goto error; /* coverity[secure_coding] */

/* TTY */

if (fscanf (f, "%d ", &itmp) == 0) goto error; /* coverity[secure_coding] */

/* TTY owner process group */

if (fscanf (f, "%d ", &itmp) == 0) goto error; /* coverity[secure_coding] */

/* Flags */

if (fscanf (f, "%u ", &itmp) == 0) goto error; /* coverity[secure_coding] */

/* Minor faults (no memory page) */

if (fscanf (f, "%u ", &itmp) == 0) goto error; /* coverity[secure_coding] */

/* Minor faults, children */

if (fscanf (f, "%u ", &itmp) == 0) goto error; /* coverity[secure_coding] */

/* Major faults (memory page faults) */

if (fscanf (f, "%u ", &itmp) == 0) goto error; /* coverity[secure_coding] */

/* Major faults, children */

if (fscanf (f, "%u ", &itmp) == 0) goto error; /* coverity[secure_coding] */

/* utime */

if (fscanf (f, "%d ", &itmp) == 0) goto error; /* coverity[secure_coding] */

/* stime */

if (fscanf (f, "%d ", &itmp) == 0) goto error; /* coverity[secure_coding] */

/* utime, children */

if (fscanf (f, "%d ", &itmp) == 0) goto error; /* coverity[secure_coding] */

/* stime, children */

if (fscanf (f, "%d ", &itmp) == 0) goto error; /* coverity[secure_coding] */

/* jiffies remaining in current time slice */

if (fscanf (f, "%d ", &itmp) == 0) goto error; /* coverity[secure_coding] */

/* 'nice' value */

if (fscanf (f, "%d ", &itmp) == 0) goto error; /* coverity[secure_coding] */

/* jiffies until next timeout */

if (fscanf (f, "%u ", &itmp) == 0) goto error; /* coverity[secure_coding] */

/* jiffies until next SIGALRM */

if (fscanf (f, "%u ", &itmp) == 0) goto error; /* coverity[secure_coding] */

/* start time (jiffies since system boot) */

if (fscanf (f, "%d ", &itmp) == 0) goto error; /* coverity[secure_coding] */

/* Virtual memory size */

if (fscanf (f, "%u ", &itmp) == 0) goto error; /* coverity[secure_coding] */

*vsize = (size_t) itmp;

/* Resident set size */

if (fscanf (f, "%u ", &itmp) == 0) goto error; /* coverity[secure_coding] */

*rss = (size_t) itmp * page_size;

/* rlim */

if (fscanf (f, "%u ", &itmp) == 0) goto error; /* coverity[secure_coding] */

/* Start of text */

if (fscanf (f, "%u ", &itmp) == 0) goto error; /* coverity[secure_coding] */

/* End of text */

if (fscanf (f, "%u ", &itmp) == 0) goto error; /* coverity[secure_coding] */

/* Start of stack */

if (fscanf (f, "%u ", &itmp) == 0) goto error; /* coverity[secure_coding] */

fclose (f);

return 0;

error:

fclose (f);

return -1;

}

int Platform::GetExecutablePath(char* buffer, size_t* size) {

*size = readlink("/proc/self/exe", buffer, *size - 1);

if (*size <= 0) return -1;

buffer[*size] = '\0';

return 0;

}

int Platform::GetCPUInfo(Local<Array> *cpus) {

HandleScope scope;

Local<Object> cpuinfo;

Local<Object> cputimes;

unsigned int ticks = (unsigned int)sysconf(_SC_CLK_TCK),

multiplier = ((uint64_t)1000L / ticks), cpuspeed;

int numcpus = 0, i = 0;

unsigned long long ticks_user, ticks_sys, ticks_idle, ticks_nice, ticks_intr;

char line[512], speedPath[256], model[512];

FILE *fpStat = fopen("/proc/stat", "r");

FILE *fpModel = fopen("/proc/cpuinfo", "r");

FILE *fpSpeed;

if (fpModel) {

while (fgets(line, 511, fpModel) != NULL) {

if (strncmp(line, "model name", 10) == 0) {

numcpus++;

if (numcpus == 1) {

char *p = strchr(line, ':') + 2;

strcpy(model, p);

model[strlen(model)-1] = 0;

}

} else if (strncmp(line, "cpu MHz", 7) == 0) {

if (numcpus == 1) {

sscanf(line, "%*s %*s : %u", &cpuspeed);

}

fclose(fpModel);

}

*cpus = Array::New(numcpus);

if (fpStat) {

while (fgets(line, 511, fpStat) != NULL) {

if (strncmp(line, "cpu ", 4) == 0) {

continue;

} else if (strncmp(line, "cpu", 3) != 0) {

break;

}

sscanf(line, "%*s %llu %llu %llu %llu %*llu %llu",

&ticks_user, &ticks_nice, &ticks_sys, &ticks_idle, &ticks_intr);

snprintf(speedPath, sizeof(speedPath),

"/sys/devices/system/cpu/cpu%u/cpufreq/cpuinfo_max_freq", i);

fpSpeed = fopen(speedPath, "r");

if (fpSpeed) {

if (fgets(line, 511, fpSpeed) != NULL) {

sscanf(line, "%u", &cpuspeed);

cpuspeed /= 1000;

}

fclose(fpSpeed);

}

cpuinfo = Object::New();

cputimes = Object::New();

cputimes->Set(String::New("user"), Number::New(ticks_user * multiplier));

cputimes->Set(String::New("nice"), Number::New(ticks_nice * multiplier));

cputimes->Set(String::New("sys"), Number::New(ticks_sys * multiplier));

cputimes->Set(String::New("idle"), Number::New(ticks_idle * multiplier));

cputimes->Set(String::New("irq"), Number::New(ticks_intr * multiplier));

cpuinfo->Set(String::New("model"), String::New(model));

cpuinfo->Set(String::New("speed"), Number::New(cpuspeed));

cpuinfo->Set(String::New("times"), cputimes);

(*cpus)->Set(i++, cpuinfo);

}

fclose(fpStat);

}

return 0;

}

double Platform::GetFreeMemory() {

double pagesize = static_cast<double>(sysconf(_SC_PAGESIZE));

double pages = static_cast<double>(sysconf(_SC_AVPHYS_PAGES));

return static_cast<double>(pages * pagesize);

}

double Platform::GetTotalMemory() {

double pagesize = static_cast<double>(sysconf(_SC_PAGESIZE));

double pages = static_cast<double>(sysconf(_SC_PHYS_PAGES));

return pages * pagesize;

}

double Platform::GetUptimeImpl() {

#if HAVE_MONOTONIC_CLOCK

struct timespec now;

if (0 == clock_gettime(CLOCK_MONOTONIC, &now)) {

double uptime = now.tv_sec;

uptime += (double)now.tv_nsec / 1000000000.0;

return uptime;

}

return -1;

#else

struct sysinfo info;

if (sysinfo(&info) < 0) {

return -1;

}

return static_cast<double>(info.uptime);

#endif

}

int Platform::GetLoadAvg(Local<Array> *loads) {

struct sysinfo info;

if (sysinfo(&info) < 0) {

return -1;

}

(*loads)->Set(0, Number::New(static_cast<double>(info.loads[0]) / 65536.0));

(*loads)->Set(1, Number::New(static_cast<double>(info.loads[1]) / 65536.0));

(*loads)->Set(2, Number::New(static_cast<double>(info.loads[2]) / 65536.0));

return 0;

}

bool IsInternal(struct ifaddrs* addr) {

return addr->ifa_flags & IFF_UP &&

addr->ifa_flags & IFF_RUNNING &&

addr->ifa_flags & IFF_LOOPBACK;

}

Handle<Value> Platform::GetInterfaceAddresses() {

HandleScope scope;

struct ::ifaddrs *addrs;

int r = getifaddrs(&addrs);

if (r != 0) {

return ThrowException(ErrnoException(errno, "getifaddrs"));

}

struct ::ifaddrs *addr;

Local<Object> a = Object::New();

for (addr = addrs;

addr;

addr = addr->ifa_next) {

Local<String> name = String::New(addr->ifa_name);

Local<Object> info;

if (a->Has(name)) {

info = a->Get(name)->ToObject();

} else {

info = Object::New();

a->Set(name, info);

}

struct sockaddr *address = addr->ifa_addr;

char ip[INET6_ADDRSTRLEN];

switch (address->sa_family) {

case AF_INET6: {

struct sockaddr_in6 *a6 = (struct sockaddr_in6*)address;

inet_ntop(AF_INET6, &(a6->sin6_addr), ip, INET6_ADDRSTRLEN);

info->Set(String::New("ip6"), String::New(ip));

if (addr->ifa_flags) {

info->Set(String::New("internal"),

IsInternal(addr) ? True() : False());

}

break;

}

case AF_INET: {

struct sockaddr_in *a4 = (struct sockaddr_in*)address;

inet_ntop(AF_INET, &(a4->sin_addr), ip, INET6_ADDRSTRLEN);

info->Set(String::New("ip"), String::New(ip));

if (addr->ifa_flags) {

info->Set(String::New("internal"),

IsInternal(addr) ? True() : False());

}

break;

}

freeifaddrs(addrs);

return scope.Close(a);

}

} // namespace node

node/src/platform_linux.cc at master · gembin/node · GitHub

Expand file tree

Breadcrumbs

platform_linux.cc

Latest commit

History

Breadcrumbs

platform_linux.cc

File metadata and controls