base/threading/platform_thread_freebsd.cc

   1 // Copyright 2014 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/threading/platform_thread.h"
   6
   7 #include <errno.h>
   8 #include <sched.h>
   9
  10 #include "base/lazy_instance.h"
  11 #include "base/logging.h"
  12 #include "base/threading/thread_id_name_manager.h"
  13 #include "base/tracked_objects.h"
  14
  15 #if !defined(OS_NACL)
  16 #include <pthread.h>
  17 #include <sys/prctl.h>
  18 #include <sys/types.h>
  19 #include <unistd.h>
  20 #endif
  21
  22 namespace base {
  23
  24 namespace internal {
  25
  26 namespace {
  27 #if !defined(OS_NACL)
  28 const struct sched_param kRealTimePrio = {8};
  29 #endif
  30 }  // namespace
  31
  32 const ThreadPriorityToNiceValuePair kThreadPriorityToNiceValueMap[4] = {
  33   { kThreadPriority_RealtimeAudio, -10 },
  34   { kThreadPriority_Background, 10 },
  35   { kThreadPriority_Normal, 0 },
  36   { kThreadPriority_Display, -6 },
  37 }
  38
  39 bool HandleSetThreadPriorityForPlatform(PlatformThreadHandle handle,
  40                                         ThreadPriority priority) {
  41 #if !defined(OS_NACL)
  42   return priority == kThreadPriority_RealtimeAudio &&
  43          pthread_setschedparam(pthread_self(), SCHED_RR, &kRealTimePrio) == 0;
  44 #else
  45   return false;
  46 #endif
  47 }
  48
  49 }  // namespace internal
  50
  51 // static
  52 void PlatformThread::SetName(const char* name) {
  53   ThreadIdNameManager::GetInstance()->SetName(CurrentId(), name);
  54   tracked_objects::ThreadData::InitializeThreadContext(name);
  55
  56 #if !defined(OS_NACL)
  57   // On FreeBSD we can get the thread names to show up in the debugger by
  58   // setting the process name for the LWP.  We don't want to do this for the
  59   // main thread because that would rename the process, causing tools like
  60   // killall to stop working.
  61   if (PlatformThread::CurrentId() == getpid())
  62     return;
  63   setproctitle("%s", name);
  64 #endif  //  !defined(OS_NACL)
  65 }
  66
  67 void InitThreading() {}
  68
  69 void InitOnThread() {}
  70
  71 void TerminateOnThread() {}
  72
  73 size_t GetDefaultThreadStackSize(const pthread_attr_t& attributes) {
  74 #if !defined(THREAD_SANITIZER)
  75   return 0;
  76 #else
  77   // ThreadSanitizer bloats the stack heavily. Evidence has been that the
  78   // default stack size isn't enough for some browser tests.
  79   return 2 * (1 << 23);  // 2 times 8192K (the default stack size on Linux).
  80 #endif
  81 }
  82
  83 }  // namespace base