base/process_util_openbsd.cc

   1 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "base/process_util.h"
   6
   7 #include <ctype.h>
   8 #include <dirent.h>
   9 #include <dlfcn.h>
  10 #include <errno.h>
  11 #include <fcntl.h>
  12 #include <sys/param.h>
  13 #include <sys/sysctl.h>
  14 #include <sys/time.h>
  15 #include <sys/types.h>
  16 #include <sys/user.h>
  17 #include <sys/wait.h>
  18 #include <time.h>
  19 #include <unistd.h>
  20
  21 #include "base/file_util.h"
  22 #include "base/logging.h"
  23 #include "base/string_tokenizer.h"
  24 #include "base/string_util.h"
  25 #include "base/strings/string_number_conversions.h"
  26 #include "base/strings/string_split.h"
  27 #include "base/sys_info.h"
  28 #include "base/threading/thread_restrictions.h"
  29
  30 namespace base {
  31
  32 ProcessId GetParentProcessId(ProcessHandle process) {
  33   struct kinfo_proc info;
  34   size_t length;
  35   int mib[] = { CTL_KERN, KERN_PROC, KERN_PROC_PID, process,
  36                 sizeof(struct kinfo_proc), 0 };
  37
  38   if (sysctl(mib, arraysize(mib), NULL, &length, NULL, 0) < 0)
  39     return -1;
  40
  41   mib[5] = (length / sizeof(struct kinfo_proc));
  42
  43   if (sysctl(mib, arraysize(mib), &info, &length, NULL, 0) < 0)
  44     return -1;
  45
  46   return info.p_ppid;
  47 }
  48
  49 FilePath GetProcessExecutablePath(ProcessHandle process) {
  50   struct kinfo_proc kp;
  51   size_t len;
  52   int mib[] = { CTL_KERN, KERN_PROC, KERN_PROC_PID, process,
  53                 sizeof(struct kinfo_proc), 0 };
  54
  55   if (sysctl(mib, arraysize(mib), NULL, &len, NULL, 0) == -1)
  56     return FilePath();
  57   mib[5] = (len / sizeof(struct kinfo_proc));
  58   if (sysctl(mib, arraysize(mib), &kp, &len, NULL, 0) < 0)
  59     return FilePath();
  60   if ((kp.p_flag & P_SYSTEM) != 0)
  61     return FilePath();
  62   if (strcmp(kp.p_comm, "chrome") == 0)
  63     return FilePath(kp.p_comm);
  64
  65   return FilePath();
  66 }
  67
  68 ProcessIterator::ProcessIterator(const ProcessFilter* filter)
  69     : index_of_kinfo_proc_(),
  70       filter_(filter) {
  71
  72   int mib[] = { CTL_KERN, KERN_PROC, KERN_PROC_UID, getuid(),
  73                 sizeof(struct kinfo_proc), 0 };
  74
  75   bool done = false;
  76   int try_num = 1;
  77   const int max_tries = 10;
  78
  79   do {
  80     size_t len = 0;
  81     if (sysctl(mib, arraysize(mib), NULL, &len, NULL, 0) < 0) {
  82       DLOG(ERROR) << "failed to get the size needed for the process list";
  83       kinfo_procs_.resize(0);
  84       done = true;
  85     } else {
  86       size_t num_of_kinfo_proc = len / sizeof(struct kinfo_proc);
  87       // Leave some spare room for process table growth (more could show up
  88       // between when we check and now)
  89       num_of_kinfo_proc += 16;
  90       kinfo_procs_.resize(num_of_kinfo_proc);
  91       len = num_of_kinfo_proc * sizeof(struct kinfo_proc);
  92       if (sysctl(mib, arraysize(mib), &kinfo_procs_[0], &len, NULL, 0) < 0) {
  93         // If we get a mem error, it just means we need a bigger buffer, so
  94         // loop around again.  Anything else is a real error and give up.
  95         if (errno != ENOMEM) {
  96           DLOG(ERROR) << "failed to get the process list";
  97           kinfo_procs_.resize(0);
  98           done = true;
  99         }
 100       } else {
 101         // Got the list, just make sure we're sized exactly right
 102         size_t num_of_kinfo_proc = len / sizeof(struct kinfo_proc);
 103         kinfo_procs_.resize(num_of_kinfo_proc);
 104         done = true;
 105       }
 106     }
 107   } while (!done && (try_num++ < max_tries));
 108
 109   if (!done) {
 110     DLOG(ERROR) << "failed to collect the process list in a few tries";
 111     kinfo_procs_.resize(0);
 112   }
 113 }
 114
 115 ProcessIterator::~ProcessIterator() {
 116 }
 117
 118 bool ProcessIterator::CheckForNextProcess() {
 119   std::string data;
 120   for (; index_of_kinfo_proc_ < kinfo_procs_.size(); ++index_of_kinfo_proc_) {
 121     kinfo_proc& kinfo = kinfo_procs_[index_of_kinfo_proc_];
 122
 123     // Skip processes just awaiting collection
 124     if ((kinfo.p_pid > 0) && (kinfo.p_stat == SZOMB))
 125       continue;
 126
 127     int mib[] = { CTL_KERN, KERN_PROC_ARGS, kinfo.p_pid };
 128
 129     // Find out what size buffer we need.
 130     size_t data_len = 0;
 131     if (sysctl(mib, arraysize(mib), NULL, &data_len, NULL, 0) < 0) {
 132       DVPLOG(1) << "failed to figure out the buffer size for a commandline";
 133       continue;
 134     }
 135
 136     data.resize(data_len);
 137     if (sysctl(mib, arraysize(mib), &data[0], &data_len, NULL, 0) < 0) {
 138       DVPLOG(1) << "failed to fetch a commandline";
 139       continue;
 140     }
 141
 142     // |data| contains all the command line parameters of the process, separated
 143     // by blocks of one or more null characters. We tokenize |data| into a
 144     // vector of strings using '\0' as a delimiter and populate
 145     // |entry_.cmd_line_args_|.
 146     std::string delimiters;
 147     delimiters.push_back('\0');
 148     Tokenize(data, delimiters, &entry_.cmd_line_args_);
 149
 150     // |data| starts with the full executable path followed by a null character.
 151     // We search for the first instance of '\0' and extract everything before it
 152     // to populate |entry_.exe_file_|.
 153     size_t exec_name_end = data.find('\0');
 154     if (exec_name_end == std::string::npos) {
 155       DLOG(ERROR) << "command line data didn't match expected format";
 156       continue;
 157     }
 158
 159     entry_.pid_ = kinfo.p_pid;
 160     entry_.ppid_ = kinfo.p_ppid;
 161     entry_.gid_ = kinfo.p__pgid;
 162     size_t last_slash = data.rfind('/', exec_name_end);
 163     if (last_slash == std::string::npos)
 164       entry_.exe_file_.assign(data, 0, exec_name_end);
 165     else
 166       entry_.exe_file_.assign(data, last_slash + 1,
 167                               exec_name_end - last_slash - 1);
 168     // Start w/ the next entry next time through
 169     ++index_of_kinfo_proc_;
 170     // Done
 171     return true;
 172   }
 173   return false;
 174 }
 175
 176 bool NamedProcessIterator::IncludeEntry() {
 177   return (executable_name_ == entry().exe_file() &&
 178           ProcessIterator::IncludeEntry());
 179 }
 180
 181
 182 ProcessMetrics::ProcessMetrics(ProcessHandle process)
 183     : process_(process),
 184       last_time_(0),
 185       last_system_time_(0),
 186       last_cpu_(0) {
 187
 188   processor_count_ = base::SysInfo::NumberOfProcessors();
 189 }
 190
 191 // static
 192 ProcessMetrics* ProcessMetrics::CreateProcessMetrics(ProcessHandle process) {
 193   return new ProcessMetrics(process);
 194 }
 195
 196 size_t ProcessMetrics::GetPagefileUsage() const {
 197   struct kinfo_proc info;
 198   size_t length;
 199   int mib[] = { CTL_KERN, KERN_PROC, KERN_PROC_PID, process_,
 200                 sizeof(struct kinfo_proc), 0 };
 201
 202   if (sysctl(mib, arraysize(mib), NULL, &length, NULL, 0) < 0)
 203     return -1;
 204
 205   mib[5] = (length / sizeof(struct kinfo_proc));
 206
 207   if (sysctl(mib, arraysize(mib), &info, &length, NULL, 0) < 0)
 208     return -1;
 209
 210   return (info.p_vm_tsize + info.p_vm_dsize + info.p_vm_ssize);
 211 }
 212
 213 size_t ProcessMetrics::GetPeakPagefileUsage() const {
 214
 215   return 0;
 216 }
 217
 218 size_t ProcessMetrics::GetWorkingSetSize() const {
 219   struct kinfo_proc info;
 220   size_t length;
 221   int mib[] = { CTL_KERN, KERN_PROC, KERN_PROC_PID, process_,
 222                 sizeof(struct kinfo_proc), 0 };
 223
 224   if (sysctl(mib, arraysize(mib), NULL, &length, NULL, 0) < 0)
 225     return -1;
 226
 227   mib[5] = (length / sizeof(struct kinfo_proc));
 228
 229   if (sysctl(mib, arraysize(mib), &info, &length, NULL, 0) < 0)
 230     return -1;
 231
 232   return info.p_vm_rssize * getpagesize();
 233 }
 234
 235 size_t ProcessMetrics::GetPeakWorkingSetSize() const {
 236
 237   return 0;
 238 }
 239
 240 bool ProcessMetrics::GetMemoryBytes(size_t* private_bytes,
 241                                     size_t* shared_bytes) {
 242   WorkingSetKBytes ws_usage;
 243
 244   if (!GetWorkingSetKBytes(&ws_usage))
 245     return false;
 246
 247   if (private_bytes)
 248     *private_bytes = ws_usage.priv << 10;
 249
 250   if (shared_bytes)
 251     *shared_bytes = ws_usage.shared * 1024;
 252
 253   return true;
 254 }
 255
 256 bool ProcessMetrics::GetWorkingSetKBytes(WorkingSetKBytes* ws_usage) const {
 257 // TODO(bapt) be sure we can't be precise
 258   size_t priv = GetWorkingSetSize();
 259   if (!priv)
 260     return false;
 261   ws_usage->priv = priv / 1024;
 262   ws_usage->shareable = 0;
 263   ws_usage->shared = 0;
 264
 265   return true;
 266 }
 267
 268 bool ProcessMetrics::GetIOCounters(IoCounters* io_counters) const {
 269   return false;
 270 }
 271
 272 static int GetProcessCPU(pid_t pid) {
 273   struct kinfo_proc info;
 274   size_t length;
 275   int mib[] = { CTL_KERN, KERN_PROC, KERN_PROC_PID, pid,
 276                 sizeof(struct kinfo_proc), 0 };
 277
 278   if (sysctl(mib, arraysize(mib), NULL, &length, NULL, 0) < 0)
 279     return -1;
 280
 281   mib[5] = (length / sizeof(struct kinfo_proc));
 282
 283   if (sysctl(mib, arraysize(mib), &info, &length, NULL, 0) < 0)
 284     return 0;
 285
 286   return info.p_pctcpu;
 287 }
 288
 289 double ProcessMetrics::GetCPUUsage() {
 290   struct timeval now;
 291
 292   int retval = gettimeofday(&now, NULL);
 293   if (retval)
 294     return 0;
 295
 296   int64 time = TimeValToMicroseconds(now);
 297
 298   if (last_time_ == 0) {
 299     // First call, just set the last values.
 300     last_time_ = time;
 301     last_cpu_ = GetProcessCPU(process_);
 302     return 0;
 303   }
 304
 305   int64 time_delta = time - last_time_;
 306   DCHECK_NE(time_delta, 0);
 307
 308   if (time_delta == 0)
 309     return 0;
 310
 311   int cpu = GetProcessCPU(process_);
 312
 313   last_time_ = time;
 314   last_cpu_ = cpu;
 315
 316   double percentage = static_cast<double>((cpu * 100.0) / FSCALE);
 317
 318   return percentage;
 319 }
 320
 321 size_t GetSystemCommitCharge() {
 322   int mib[] = { CTL_VM, VM_METER };
 323   int pagesize;
 324   struct vmtotal vmtotal;
 325   unsigned long mem_total, mem_free, mem_inactive;
 326   size_t len = sizeof(vmtotal);
 327
 328   if (sysctl(mib, arraysize(mib), &vmtotal, &len, NULL, 0) < 0)
 329     return 0;
 330
 331   mem_total = vmtotal.t_vm;
 332   mem_free = vmtotal.t_free;
 333   mem_inactive = vmtotal.t_vm - vmtotal.t_avm;
 334
 335   pagesize = getpagesize();
 336
 337   return mem_total - (mem_free*pagesize) - (mem_inactive*pagesize);
 338 }
 339
 340 void EnableTerminationOnOutOfMemory() {
 341 }
 342
 343 void EnableTerminationOnHeapCorruption() {
 344 }
 345
 346 }  // namespace base