Adding upstream version 18.2.2.upstream/18.2.2

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 83 insertions, 0 deletions

diff --git a/src/common/Thread.h b/src/common/Thread.h
new file mode 100644
index 000000000..5242fb5f3
--- /dev/null
+++ b/src/common/Thread.h
@@ -0,0 +1,83 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+/*
+ * Ceph - scalable distributed file system
+ *
+ * Copyright (C) 2004-2011 New Dream Network
+ *
+ * This is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License version 2.1, as published by the Free Software
+ * Foundation.  See file COPYING.
+ *
+ */
+
+
+#ifndef CEPH_THREAD_H
+#define CEPH_THREAD_H
+
+#include <functional>
+#include <string_view>
+#include <system_error>
+#include <thread>
+
+#include <pthread.h>
+#include <sys/types.h>
+
+#include "include/compat.h"
+
+extern pid_t ceph_gettid();
+
+class Thread {
+ private:
+  pthread_t thread_id;
+  pid_t pid;
+  int cpuid;
+  std::string thread_name;
+
+  void *entry_wrapper();
+
+ public:
+  Thread(const Thread&) = delete;
+  Thread& operator=(const Thread&) = delete;
+
+  Thread();
+  virtual ~Thread();
+
+ protected:
+  virtual void *entry() = 0;
+
+ private:
+  static void *_entry_func(void *arg);
+
+ public:
+  const pthread_t &get_thread_id() const;
+  pid_t get_pid() const { return pid; }
+  bool is_started() const;
+  bool am_self() const;
+  int kill(int signal);
+  int try_create(size_t stacksize);
+  void create(const char *name, size_t stacksize = 0);
+  int join(void **prval = 0);
+  int detach();
+  int set_affinity(int cpuid);
+};
+
+// Functions for with std::thread
+
+void set_thread_name(std::thread& t, const std::string& s);
+std::string get_thread_name(const std::thread& t);
+void kill(std::thread& t, int signal);
+
+template<typename Fun, typename... Args>
+std::thread make_named_thread(std::string_view n,
+			      Fun&& fun,
+			      Args&& ...args) {
+
+  return std::thread([n = std::string(n)](auto&& fun, auto&& ...args) {
+		       ceph_pthread_setname(pthread_self(), n.data());
+		       std::invoke(std::forward<Fun>(fun),
+				   std::forward<Args>(args)...);
+		     }, std::forward<Fun>(fun), std::forward<Args>(args)...);
+}
+#endif