use os_bsd and OS_BSD and add some OS_FREEBSD conditions

this change is the first part of the FreeBSD support

BUG=
TEST=


Review URL: http://codereview.chromium.org/8773051

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@112936 0039d316-1c4b-4281-b951-d872f2087c98

diff --git a/base/base.gypi b/base/base.gypi
index c67575a..6d6f0d7 100644
--- a/base/base.gypi
+++ b/base/base.gypi

@@ -221,6 +221,7 @@
           'process_posix.cc',
           'process_util.cc',
           'process_util.h',
+          'process_util_freebsd.cc',
           'process_util_linux.cc',
           'process_util_mac.mm',
           'process_util_openbsd.cc',
@@ -444,7 +445,7 @@
               [ 'exclude', '^message_pump_x\\.cc$',],
             ],
           }],
-          [ 'OS != "linux" and OS != "openbsd"', {
+          [ 'OS != "linux" and os_bsd != 1', {
               'sources!': [
                 # Not automatically excluded by the *linux.cc rules.
                 'linux_util.cc',
@@ -522,7 +523,7 @@
               ['exclude', '^sys_string_conversions_posix\\.cc$'],
             ],
           }],
-          [ 'OS == "openbsd"', {
+          [ 'os_bsd==1', {
             'sources/': [
               ['exclude', '^files/file_path_watcher_linux\\.cc$'],
               ['exclude', '^files/file_path_watcher_stub\\.cc$'],

diff --git a/base/debug/debugger_posix.cc b/base/debug/debugger_posix.cc
index 1c7304c..4dee92db 100644
--- a/base/debug/debugger_posix.cc
+++ b/base/debug/debugger_posix.cc

@@ -33,6 +33,10 @@
 #include <sys/sysctl.h>
 #endif
 
+#if defined(OS_FREEBSD)
+#include <sys/user.h>
+#endif
+
 #include <ostream>
 
 #include "base/basictypes.h"
@@ -108,7 +112,9 @@
 
   // This process is being debugged if the P_TRACED flag is set.
   is_set = true;
-#if defined(OS_BSD)
+#if defined(OS_FREEBSD)
+  being_debugged = (info.ki_flag & P_TRACED) != 0;
+#elif defined(OS_BSD)
   being_debugged = (info.p_flag & P_TRACED) != 0;
 #else
   being_debugged = (info.kp_proc.p_flag & P_TRACED) != 0;
@@ -152,22 +158,14 @@
   return pid_index < status.size() && status[pid_index] != '0';
 }
 
-#elif defined(OS_NACL)
-
-bool BeingDebugged() {
-  NOTIMPLEMENTED();
-  return false;
-}
-
 #else
 
 bool BeingDebugged() {
-  // TODO(benl): can we determine this under FreeBSD?
   NOTIMPLEMENTED();
   return false;
 }
 
-#endif  // defined(OS_FREEBSD)
+#endif
 
 // We want to break into the debugger in Debug mode, and cause a crash dump in
 // Release mode. Breakpad behaves as follows:

diff --git a/base/process_util.h b/base/process_util.h
index 3c9dfbe..9bcd6d4 100644
--- a/base/process_util.h
+++ b/base/process_util.h

@@ -14,14 +14,14 @@
 #if defined(OS_WIN)
 #include <windows.h>
 #include <tlhelp32.h>
-#elif defined(OS_MACOSX) || defined(OS_OPENBSD)
+#elif defined(OS_MACOSX) || defined(OS_BSD)
 // kinfo_proc is defined in <sys/sysctl.h>, but this forward declaration
 // is sufficient for the vector<kinfo_proc> below.
 struct kinfo_proc;
 // malloc_zone_t is defined in <malloc/malloc.h>, but this forward declaration
 // is sufficient for GetPurgeableZone() below.
 typedef struct _malloc_zone_t malloc_zone_t;
-#if !defined(OS_OPENBSD)
+#if !defined(OS_BSD)
 #include <mach/mach.h>
 #endif
 #elif defined(OS_POSIX)
@@ -167,7 +167,7 @@
 // Win XP SP1 as well.
 BASE_EXPORT ProcessId GetProcId(ProcessHandle process);
 
-#if defined(OS_LINUX) || defined(OS_ANDROID) || defined(OS_OPENBSD)
+#if defined(OS_LINUX) || defined(OS_ANDROID) || defined(OS_BSD)
 // Returns the path to the executable of the given process.
 BASE_EXPORT FilePath GetProcessExecutablePath(ProcessHandle process);
 #endif
@@ -568,7 +568,7 @@
 #if defined(OS_WIN)
   HANDLE snapshot_;
   bool started_iteration_;
-#elif defined(OS_MACOSX) || defined(OS_OPENBSD)
+#elif defined(OS_MACOSX) || defined(OS_BSD)
   std::vector<kinfo_proc> kinfo_procs_;
   size_t index_of_kinfo_proc_;
 #elif defined(OS_POSIX)

diff --git a/base/process_util_freebsd.cc b/base/process_util_freebsd.cc
new file mode 100644
index 0000000..1157fb2
--- /dev/null
+++ b/base/process_util_freebsd.cc

@@ -0,0 +1,293 @@
+// 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/time.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <sys/sysctl.h>
+#include <sys/user.h>
+#include <time.h>
+#include <unistd.h>
+
+#include "base/file_util.h"
+#include "base/logging.h"
+#include "base/string_number_conversions.h"
+#include "base/string_split.h"
+#include "base/string_tokenizer.h"
+#include "base/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));
+}
+
+ProcessIterator::ProcessIterator(const ProcessFilter* filter)
+    : index_of_kinfo_proc_(),
+      filter_(filter) {
+
+  int mib[] = { CTL_KERN, KERN_PROC, KERN_PROC_UID, getuid() };
+
+  bool done = false;
+  int try_num = 1;
+  const int max_tries = 10;
+
+  do {
+    size_t len = 0;
+    if (sysctl(mib, arraysize(mib), NULL, &len, NULL, 0) <0 ){
+      LOG(ERROR) << "failed to get the size needed for the process list";
+      kinfo_procs_.resize(0);
+      done = true;
+    } else {
+      size_t num_of_kinfo_proc = len / sizeof(struct kinfo_proc);
+      // Leave some spare room for process table growth (more could show up
+      // between when we check and now)
+      num_of_kinfo_proc += 16;
+      kinfo_procs_.resize(num_of_kinfo_proc);
+      len = num_of_kinfo_proc * sizeof(struct kinfo_proc);
+      if (sysctl(mib, arraysize(mib), &kinfo_procs_[0], &len, NULL, 0) <0) {
+        // If we get a mem error, it just means we need a bigger buffer, so
+        // loop around again.  Anything else is a real error and give up.
+        if (errno != ENOMEM) {
+          LOG(ERROR) << "failed to get the process list";
+          kinfo_procs_.resize(0);
+          done = true;
+        }
+      } else {
+        // Got the list, just make sure we're sized exactly right
+        size_t num_of_kinfo_proc = len / sizeof(struct kinfo_proc);
+        kinfo_procs_.resize(num_of_kinfo_proc);
+        done = true;
+      }
+    }
+  } while (!done && (try_num++ < max_tries));
+
+  if (!done) {
+    LOG(ERROR) << "failed to collect the process list in a few tries";
+    kinfo_procs_.resize(0);
+  }
+}
+
+ProcessIterator::~ProcessIterator() {
+}
+
+bool ProcessIterator::CheckForNextProcess() {
+  std::string data;
+
+  for (; index_of_kinfo_proc_ < kinfo_procs_.size(); ++ index_of_kinfo_proc_) {
+    size_t length;
+    struct kinfo_proc kinfo = kinfo_procs_[index_of_kinfo_proc_];
+    int mib[] = { CTL_KERN, KERN_PROC_ARGS, kinfo.ki_pid };
+
+    if ((kinfo.ki_pid > 0) && (kinfo.ki_stat == SZOMB))
+      continue;
+
+    length = 0;
+    if (sysctl(mib, arraysize(mib), NULL, &length, NULL, 0) < 0) {
+      LOG(ERROR) << "failed to figure out the buffer size for a command line";
+      continue;
+    }
+
+    data.resize(length);
+
+    if (sysctl(mib, arraysize(mib), &data[0], &length, NULL, 0) < 0) {
+      LOG(ERROR) << "failed to fetch a commandline";
+      continue;
+    }
+
+    std::string delimiters;
+    delimiters.push_back('\0');
+    Tokenize(data, delimiters, &entry_.cmd_line_args_);
+
+    size_t exec_name_end = data.find('\0');
+    if (exec_name_end == std::string::npos) {
+      LOG(ERROR) << "command line data didn't match expected format";
+      continue;
+    }
+
+    entry_.pid_ = kinfo.ki_pid;
+    entry_.ppid_ = kinfo.ki_ppid;
+    entry_.gid_ = kinfo.ki_pgid;
+
+    size_t last_slash = data.rfind('/', exec_name_end);
+    if (last_slash == std::string::npos) {
+      entry_.exe_file_.assign(data, 0, exec_name_end);
+    } else {
+      entry_.exe_file_.assign(data, last_slash + 1,
+                              exec_name_end - last_slash - 1);
+    }
+
+    // Start w/ the next entry next time through
+    ++index_of_kinfo_proc_;
+
+    return true;
+  }
+  return false;
+}
+
+bool NamedProcessIterator::IncludeEntry() {
+  if(executable_name_ != entry().exe_file())
+    return false;
+
+  return ProcessIterator::IncludeEntry();
+}
+
+
+ProcessMetrics::ProcessMetrics(ProcessHandle process)
+    : process_(process),
+      last_time_(0),
+      last_system_time_(0),
+      last_cpu_(0) {
+  processor_count_ = base::SysInfo::NumberOfProcessors();
+}
+
+// static
+ProcessMetrics* ProcessMetrics::CreateProcessMetrics(ProcessHandle process) {
+  return new ProcessMetrics(process);
+}
+
+size_t ProcessMetrics::GetPagefileUsage() const {
+  struct kinfo_proc info;
+  int mib[] = { CTL_KERN, KERN_PROC, KERN_PROC_PID, process_ };
+  size_t length = sizeof(info);
+
+  if (sysctl(mib, arraysize(mib), &info, &length, NULL, 0) < 0)
+    return 0;
+
+  return info.ki_size;
+}
+
+size_t ProcessMetrics::GetPeakPagefileUsage() const {
+  return 0;
+}
+
+size_t ProcessMetrics::GetWorkingSetSize() const {
+  struct kinfo_proc info;
+  int mib[] = { CTL_KERN, KERN_PROC, KERN_PROC_PID, process_ };
+  size_t length = sizeof(info);
+
+  if (sysctl(mib, arraysize(mib), &info, &length, NULL, 0) < 0)
+    return 0;
+
+  return info.ki_rssize * getpagesize();
+}
+
+size_t ProcessMetrics::GetPeakWorkingSetSize() const {
+  return 0;
+}
+
+bool ProcessMetrics::GetMemoryBytes(size_t* private_bytes,
+                                    size_t* shared_bytes) {
+  WorkingSetKBytes ws_usage;
+  if (!GetWorkingSetKBytes(&ws_usage))
+    return false;
+
+  if (private_bytes)
+    *private_bytes = ws_usage.priv << 10;
+
+  if (shared_bytes)
+    *shared_bytes = ws_usage.shared * 1024;
+
+  return true;
+}
+
+bool ProcessMetrics::GetWorkingSetKBytes(WorkingSetKBytes* ws_usage) const {
+// TODO(bapt) be sure we can't be precise
+  size_t priv = GetWorkingSetSize();
+  if (!priv)
+    return false;
+  ws_usage->priv = priv / 1024;
+  ws_usage->shareable = 0;
+  ws_usage->shared = 0;
+
+  return true;
+}
+
+bool ProcessMetrics::GetIOCounters(IoCounters* io_counters) const {
+  return false;
+}
+
+double ProcessMetrics::GetCPUUsage() {
+  struct kinfo_proc info;
+  int mib[] = { CTL_KERN, KERN_PROC, KERN_PROC_PID, process_ };
+  size_t length = sizeof(info);
+
+  struct timeval now;
+  int retval = gettimeofday(&now, NULL);
+  if (retval)
+    return 0;
+
+  if (sysctl(mib, arraysize(mib), &info, &length, NULL, 0) < 0)
+    return 0;
+
+  return (info.ki_pctcpu / FSCALE) * 100.0;
+}
+
+size_t GetSystemCommitCharge() {
+  int mib[2], pagesize;
+  unsigned long mem_total, mem_free, mem_inactive;
+  size_t length = sizeof(mem_total);
+
+  if (sysctl(mib, arraysize(mib), &mem_total, &length, NULL, 0) < 0)
+    return 0;
+
+  length = sizeof(mem_free);
+  if (sysctlbyname("vm.stats.vm.v_free_count", &mem_free, &length, NULL, 0) < 0)
+    return 0;
+
+  length = sizeof(mem_inactive);
+  if (sysctlbyname("vm.stats.vm.v_inactive_count", &mem_inactive, &length,
+      NULL, 0) < 0) {
+    return 0;
+  }
+
+  pagesize = getpagesize();
+
+  return mem_total - (mem_free*pagesize) - (mem_inactive*pagesize);
+}
+
+void EnableTerminationOnOutOfMemory() {
+  DLOG(WARNING) << "Not feasible.";
+}
+
+void EnableTerminationOnHeapCorruption() {
+  // Nothing to do.
+}
+
+bool AdjustOOMScore(ProcessId process, int score) {
+  NOTIMPLEMENTED();
+  return false;
+}
+
+}  // namespace base

diff --git a/base/process_util_posix.cc b/base/process_util_posix.cc
index f0e9fb0..addd1c3 100644
--- a/base/process_util_posix.cc
+++ b/base/process_util_posix.cc

@@ -33,6 +33,11 @@
 #include "base/threading/thread_restrictions.h"
 #include "base/time.h"
 
+#if defined(OS_FREEBSD)
+#include <sys/event.h>
+#include <sys/ucontext.h>
+#endif
+
 #if defined(OS_MACOSX)
 #include <crt_externs.h>
 #include <sys/event.h>

diff --git a/build/common.gypi b/build/common.gypi
index 991021e5..fcd3d3fb 100644
--- a/build/common.gypi
+++ b/build/common.gypi

@@ -1207,15 +1207,15 @@
               '-Wsign-compare',
             ]
           }],
-          [ 'os_posix==1 and OS!="mac" and OS!="openbsd" and OS!="android" and chromeos==0', {
+          [ 'os_posix==1 and os_bsd!=1 and OS!="mac" and OS!="android" and chromeos==0', {
             'cflags': [
               # Don't warn about ignoring the return value from e.g. close().
               # This is off by default in some gccs but on by default in others.
               # Currently this option is not set for Chrome OS build because
               # the current version of gcc (4.3.4) used for building Chrome in
               # Chrome OS chroot doesn't support this option.
-              # OpenBSD does not support this option either, since it's using
-              # gcc 4.2.1, which does not have this flag yet.
+              # BSD systems do not support this option either, since they are
+              # usually using gcc 4.2.1, which does not have this flag yet.
               # TODO(mazda): remove the conditional for Chrome OS when gcc
               # version is upgraded.
               '-Wno-unused-result',
@@ -1280,7 +1280,7 @@
               ['exclude', '(^|/)gtk_[^/]*\\.(h|cc)$'],
             ],
           }],
-          ['OS!="linux" and OS!="openbsd"', {
+          ['OS!="linux" and OS!="openbsd" and OS!="freebsd"', {
             'sources/': [
               ['exclude', '_xdg(_unittest)?\\.(h|cc)$'],
             ],
@@ -1292,10 +1292,10 @@
               ['exclude', '(^|/)(wayland)_[^/]*\\.(h|cc)$'],
             ],
           }],
-          # Do not exclude the linux files on OpenBSD since most of them can be
+          # Do not exclude the linux files on *BSD since most of them can be
           # shared at this point.
           # In case a file is not needed, it is going to be excluded later on.
-          ['OS!="linux" and OS!="openbsd"', {
+          ['OS!="linux" and OS!="openbsd" and OS!="freebsd"', {
             'sources/': [
               ['exclude', '_linux(_unittest)?\\.(h|cc)$'],
               ['exclude', '(^|/)linux/'],