// Copyright (c) 2011 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "base/process_util.h"

#include <ctype.h>
#include <dirent.h>
#include <dlfcn.h>
#include <errno.h>
#include <fcntl.h>
#include <sys/sysctl.h>
#include <sys/time.h>
#include <sys/types.h>
#include <sys/user.h>
#include <sys/wait.h>
#include <time.h>
#include <unistd.h>

#include "base/logging.h"
#include "base/string_tokenizer.h"
#include "base/strings/string_number_conversions.h"
#include "base/strings/string_split.h"
#include "base/strings/string_util.h"
#include "base/sys_info.h"

namespace base {

ProcessId GetParentProcessId(ProcessHandle process) {
  struct kinfo_proc info;
  size_t length;
  int mib[] = { CTL_KERN, KERN_PROC, KERN_PROC_PID, process };

  if (sysctl(mib, arraysize(mib), &info, &length, NULL, 0) < 0)
    return -1;

  return info.ki_ppid;
}

FilePath GetProcessExecutablePath(ProcessHandle process) {
  char pathname[PATH_MAX];
  size_t length;
  int mib[] = { CTL_KERN, KERN_PROC, KERN_PROC_PATHNAME, process };

  length = sizeof(pathname);

  if (sysctl(mib, arraysize(mib), pathname, &length, NULL, 0) < 0 ||
      length == 0) {
    return FilePath();
  }

  return FilePath(std::string(pathname));
}

void EnableTerminationOnOutOfMemory() {
  DLOG(WARNING) << "Not feasible.";
}

void EnableTerminationOnHeapCorruption() {
  // Nothing to do.
}

bool AdjustOOMScore(ProcessId process, int score) {
  NOTIMPLEMENTED();
  return false;
}

}  // namespace base