
BUG= TEST= Review URL: http://codereview.chromium.org/8490020 git-svn-id: svn://svn.chromium.org/chrome/trunk/src@108952 0039d316-1c4b-4281-b951-d872f2087c98
347 lines
9.2 KiB
C++
347 lines
9.2 KiB
C++
// Copyright (c) 2011 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "base/process_util.h"
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#include <ctype.h>
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#include <dirent.h>
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#include <dlfcn.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <sys/time.h>
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#include <sys/types.h>
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#include <sys/wait.h>
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#include <sys/param.h>
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#include <sys/sysctl.h>
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#include <sys/user.h>
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#include <time.h>
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#include <unistd.h>
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#include "base/file_util.h"
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#include "base/logging.h"
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#include "base/string_number_conversions.h"
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#include "base/string_split.h"
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#include "base/string_tokenizer.h"
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#include "base/string_util.h"
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#include "base/sys_info.h"
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#include "base/threading/thread_restrictions.h"
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namespace base {
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ProcessId GetParentProcessId(ProcessHandle process) {
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struct kinfo_proc info;
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size_t length;
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int mib[] = { CTL_KERN, KERN_PROC, KERN_PROC_PID, process,
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sizeof(struct kinfo_proc), 0 };
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if (sysctl(mib, arraysize(mib), NULL, &length, NULL, 0) < 0)
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return -1;
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mib[5] = (length / sizeof(struct kinfo_proc));
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if (sysctl(mib, arraysize(mib), &info, &length, NULL, 0) < 0)
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return -1;
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return info.p_ppid;
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}
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FilePath GetProcessExecutablePath(ProcessHandle process) {
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struct kinfo_proc kp;
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size_t len;
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int mib[] = { CTL_KERN, KERN_PROC, KERN_PROC_PID, process,
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sizeof(struct kinfo_proc), 0 };
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if (sysctl(mib, arraysize(mib), NULL, &len, NULL, 0) == -1)
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return FilePath();
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mib[5] = (len / sizeof(struct kinfo_proc));
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if (sysctl(mib, arraysize(mib), &kp, &len, NULL, 0) < 0)
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return FilePath();
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if ((kp.p_flag & P_SYSTEM) != 0)
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return FilePath();
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if (strcmp(kp.p_comm, "chrome") == 0)
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return FilePath(kp.p_comm);
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return FilePath();
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}
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ProcessIterator::ProcessIterator(const ProcessFilter* filter)
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: index_of_kinfo_proc_(),
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filter_(filter) {
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int mib[] = { CTL_KERN, KERN_PROC, KERN_PROC_UID, getuid(),
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sizeof(struct kinfo_proc), 0 };
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bool done = false;
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int try_num = 1;
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const int max_tries = 10;
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do {
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size_t len = 0;
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if (sysctl(mib, arraysize(mib), NULL, &len, NULL, 0) < 0) {
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DLOG(ERROR) << "failed to get the size needed for the process list";
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kinfo_procs_.resize(0);
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done = true;
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} else {
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size_t num_of_kinfo_proc = len / sizeof(struct kinfo_proc);
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// Leave some spare room for process table growth (more could show up
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// between when we check and now)
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num_of_kinfo_proc += 16;
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kinfo_procs_.resize(num_of_kinfo_proc);
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len = num_of_kinfo_proc * sizeof(struct kinfo_proc);
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if (sysctl(mib, arraysize(mib), &kinfo_procs_[0], &len, NULL, 0) < 0) {
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// If we get a mem error, it just means we need a bigger buffer, so
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// loop around again. Anything else is a real error and give up.
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if (errno != ENOMEM) {
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DLOG(ERROR) << "failed to get the process list";
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kinfo_procs_.resize(0);
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done = true;
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}
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} else {
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// Got the list, just make sure we're sized exactly right
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size_t num_of_kinfo_proc = len / sizeof(struct kinfo_proc);
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kinfo_procs_.resize(num_of_kinfo_proc);
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done = true;
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}
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}
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} while (!done && (try_num++ < max_tries));
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if (!done) {
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DLOG(ERROR) << "failed to collect the process list in a few tries";
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kinfo_procs_.resize(0);
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}
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}
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ProcessIterator::~ProcessIterator() {
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}
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bool ProcessIterator::CheckForNextProcess() {
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std::string data;
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for (; index_of_kinfo_proc_ < kinfo_procs_.size(); ++index_of_kinfo_proc_) {
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kinfo_proc& kinfo = kinfo_procs_[index_of_kinfo_proc_];
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// Skip processes just awaiting collection
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if ((kinfo.p_pid > 0) && (kinfo.p_stat == SZOMB))
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continue;
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int mib[] = { CTL_KERN, KERN_PROC_ARGS, kinfo.p_pid };
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// Find out what size buffer we need.
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size_t data_len = 0;
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if (sysctl(mib, arraysize(mib), NULL, &data_len, NULL, 0) < 0) {
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DVPLOG(1) << "failed to figure out the buffer size for a commandline";
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continue;
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}
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data.resize(data_len);
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if (sysctl(mib, arraysize(mib), &data[0], &data_len, NULL, 0) < 0) {
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DVPLOG(1) << "failed to fetch a commandline";
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continue;
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}
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// |data| contains all the command line parameters of the process, separated
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// by blocks of one or more null characters. We tokenize |data| into a
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// vector of strings using '\0' as a delimiter and populate
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// |entry_.cmd_line_args_|.
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std::string delimiters;
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delimiters.push_back('\0');
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Tokenize(data, delimiters, &entry_.cmd_line_args_);
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// |data| starts with the full executable path followed by a null character.
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// We search for the first instance of '\0' and extract everything before it
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// to populate |entry_.exe_file_|.
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size_t exec_name_end = data.find('\0');
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if (exec_name_end == std::string::npos) {
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DLOG(ERROR) << "command line data didn't match expected format";
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continue;
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}
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entry_.pid_ = kinfo.p_pid;
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entry_.ppid_ = kinfo.p_ppid;
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entry_.gid_ = kinfo.p__pgid;
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size_t last_slash = data.rfind('/', exec_name_end);
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if (last_slash == std::string::npos)
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entry_.exe_file_.assign(data, 0, exec_name_end);
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else
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entry_.exe_file_.assign(data, last_slash + 1,
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exec_name_end - last_slash - 1);
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// Start w/ the next entry next time through
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++index_of_kinfo_proc_;
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// Done
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return true;
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}
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return false;
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}
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bool NamedProcessIterator::IncludeEntry() {
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return (executable_name_ == entry().exe_file() &&
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ProcessIterator::IncludeEntry());
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}
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ProcessMetrics::ProcessMetrics(ProcessHandle process)
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: process_(process),
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last_time_(0),
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last_system_time_(0),
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last_cpu_(0) {
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processor_count_ = base::SysInfo::NumberOfProcessors();
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}
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// static
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ProcessMetrics* ProcessMetrics::CreateProcessMetrics(ProcessHandle process) {
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return new ProcessMetrics(process);
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}
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size_t ProcessMetrics::GetPagefileUsage() const {
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struct kinfo_proc info;
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size_t length;
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int mib[] = { CTL_KERN, KERN_PROC, KERN_PROC_PID, process_,
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sizeof(struct kinfo_proc), 0 };
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if (sysctl(mib, arraysize(mib), NULL, &length, NULL, 0) < 0)
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return -1;
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mib[5] = (length / sizeof(struct kinfo_proc));
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if (sysctl(mib, arraysize(mib), &info, &length, NULL, 0) < 0)
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return -1;
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return (info.p_vm_tsize + info.p_vm_dsize + info.p_vm_ssize);
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}
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size_t ProcessMetrics::GetPeakPagefileUsage() const {
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return 0;
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}
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size_t ProcessMetrics::GetWorkingSetSize() const {
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struct kinfo_proc info;
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size_t length;
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int mib[] = { CTL_KERN, KERN_PROC, KERN_PROC_PID, process_,
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sizeof(struct kinfo_proc), 0 };
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if (sysctl(mib, arraysize(mib), NULL, &length, NULL, 0) < 0)
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return -1;
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mib[5] = (length / sizeof(struct kinfo_proc));
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if (sysctl(mib, arraysize(mib), &info, &length, NULL, 0) < 0)
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return -1;
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return info.p_vm_rssize * getpagesize();
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}
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size_t ProcessMetrics::GetPeakWorkingSetSize() const {
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return 0;
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}
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bool ProcessMetrics::GetMemoryBytes(size_t* private_bytes,
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size_t* shared_bytes) {
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WorkingSetKBytes ws_usage;
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if (!GetWorkingSetKBytes(&ws_usage))
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return false;
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if (private_bytes)
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*private_bytes = ws_usage.priv << 10;
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if (shared_bytes)
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*shared_bytes = ws_usage.shared * 1024;
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return true;
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}
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bool ProcessMetrics::GetWorkingSetKBytes(WorkingSetKBytes* ws_usage) const {
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// TODO(bapt) be sure we can't be precise
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size_t priv = GetWorkingSetSize();
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if (!priv)
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return false;
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ws_usage->priv = priv / 1024;
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ws_usage->shareable = 0;
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ws_usage->shared = 0;
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return true;
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}
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bool ProcessMetrics::GetIOCounters(IoCounters* io_counters) const {
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return false;
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}
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static int GetProcessCPU(pid_t pid) {
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struct kinfo_proc info;
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size_t length;
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int mib[] = { CTL_KERN, KERN_PROC, KERN_PROC_PID, pid,
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sizeof(struct kinfo_proc), 0 };
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if (sysctl(mib, arraysize(mib), NULL, &length, NULL, 0) < 0)
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return -1;
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mib[5] = (length / sizeof(struct kinfo_proc));
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if (sysctl(mib, arraysize(mib), &info, &length, NULL, 0) < 0)
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return 0;
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return info.p_pctcpu;
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}
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double ProcessMetrics::GetCPUUsage() {
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struct timeval now;
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int retval = gettimeofday(&now, NULL);
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if (retval)
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return 0;
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int64 time = TimeValToMicroseconds(now);
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if (last_time_ == 0) {
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// First call, just set the last values.
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last_time_ = time;
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last_cpu_ = GetProcessCPU(process_);
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return 0;
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}
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int64 time_delta = time - last_time_;
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DCHECK_NE(time_delta, 0);
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if (time_delta == 0)
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return 0;
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int cpu = GetProcessCPU(process_);
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last_time_ = time;
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last_cpu_ = cpu;
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double percentage = static_cast<double>((cpu * 100.0) / FSCALE);
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return percentage;
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}
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size_t GetSystemCommitCharge() {
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int mib[] = { CTL_VM, VM_METER };
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int pagesize;
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struct vmtotal vmtotal;
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unsigned long mem_total, mem_free, mem_inactive;
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size_t len = sizeof(vmtotal);
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if (sysctl(mib, arraysize(mib), &vmtotal, &len, NULL, 0) < 0)
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return 0;
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mem_total = vmtotal.t_vm;
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mem_free = vmtotal.t_free;
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mem_inactive = vmtotal.t_vm - vmtotal.t_avm;
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pagesize = getpagesize();
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return mem_total - (mem_free*pagesize) - (mem_inactive*pagesize);
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}
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void EnableTerminationOnOutOfMemory() {
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}
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void EnableTerminationOnHeapCorruption() {
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}
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} // namespace base
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