Index: base/threading/platform_thread_linux.cc |
diff --git a/base/threading/platform_thread_linux.cc b/base/threading/platform_thread_linux.cc |
new file mode 100644 |
index 0000000000000000000000000000000000000000..42e12c71a554920d94c23c503ff02c80bf8aaad4 |
--- /dev/null |
+++ b/base/threading/platform_thread_linux.cc |
@@ -0,0 +1,103 @@ |
+// Copyright (c) 2012 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/threading/platform_thread.h" |
+ |
+#include <errno.h> |
+#include <sched.h> |
+ |
+#include "base/lazy_instance.h" |
+#include "base/logging.h" |
+#include "base/memory/scoped_ptr.h" |
+#include "base/safe_strerror_posix.h" |
+#include "base/threading/thread_id_name_manager.h" |
+#include "base/threading/thread_restrictions.h" |
+#include "base/tracked_objects.h" |
+ |
+#if defined(OS_LINUX) |
+#include <sys/prctl.h> |
+#include <sys/resource.h> |
+#include <sys/syscall.h> |
+#include <sys/time.h> |
+#include <unistd.h> |
+#endif |
+ |
+namespace base { |
+ |
+namespace { |
+int ThreadNiceValue(ThreadPriority priority) { |
+ static const int threadPriorityAudio = -10; |
+ static const int threadPriorityBackground = 10; |
+ static const int threadPriorityDefault = 0; |
+ static const int threadPriorityDisplay = -6; |
+ switch (priority) { |
+ case kThreadPriority_RealtimeAudio: |
+ return threadPriorityAudio; |
+ case kThreadPriority_Background: |
+ return threadPriorityBackground; |
+ case kThreadPriority_Normal: |
+ return threadPriorityDefault; |
+ case kThreadPriority_Display: |
+ return threadPriorityDisplay; |
+ default: |
+ NOTREACHED() << "Unknown priority."; |
+ return 0; |
+ } |
+} |
+} // namespace |
+ |
+// static |
+void PlatformThread::SetName(const char* name) { |
+ ThreadIdNameManager::GetInstance()->SetName(CurrentId(), name); |
+ tracked_objects::ThreadData::InitializeThreadContext(name); |
+ |
+#ifndef OS_NACL |
+ // On linux we can get the thread names to show up in the debugger by setting |
+ // the process name for the LWP. We don't want to do this for the main |
+ // thread because that would rename the process, causing tools like killall |
+ // to stop working. |
+ if (PlatformThread::CurrentId() == getpid()) |
+ return; |
+ |
+ // http://0pointer.de/blog/projects/name-your-threads.html |
+ // Set the name for the LWP (which gets truncated to 15 characters). |
+ // Note that glibc also has a 'pthread_setname_np' api, but it may not be |
+ // available everywhere and it's only benefit over using prctl directly is |
+ // that it can set the name of threads other than the current thread. |
+ int err = prctl(PR_SET_NAME, name); |
+ // We expect EPERM failures in sandboxed processes, just ignore those. |
+ if (err < 0 && errno != EPERM) |
+ DPLOG(ERROR) << "prctl(PR_SET_NAME)"; |
+#endif |
+} |
+ |
+// static |
+void PlatformThread::SetThreadPriority(PlatformThreadHandle handle, |
+ ThreadPriority priority) { |
+#ifndef OS_NACL |
+ // setpriority(2) will set a thread's priority if it is passed a tid as |
+ // the 'process identifier', not affecting the rest of the threads in the |
+ // process. Setting this priority will only succeed if the user has been |
+ // granted permission to adjust nice values on the system. |
+ DCHECK_NE(handle.id_, kInvalidThreadId); |
+ int kNiceSetting = ThreadNiceValue(priority); |
+ if (setpriority(PRIO_PROCESS, handle.id_, kNiceSetting)) |
+ LOG(ERROR) << "Failed to set nice value of thread to " << kNiceSetting; |
+#endif |
+} |
+ |
+void InitThreading() { |
+} |
+ |
+void InitOnThread() { |
+} |
+ |
+void TerminateOnThread() { |
+} |
+ |
+size_t GetDefaultThreadStackSize(const pthread_attr_t& attributes) { |
+ return 0; |
+} |
+ |
+} // namespace base |