initial code repo

[stor4nfv.git] / src / ceph / src / log / Log.h

diff --git a/src/ceph/src/log/Log.h b/src/ceph/src/log/Log.h
new file mode 100644 (file)
index 0000000..ce77daa
--- /dev/null
+++ b/src/ceph/src/log/Log.h
@@ -0,0 +1,103 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+
+#ifndef __CEPH_LOG_LOG_H
+#define __CEPH_LOG_LOG_H
+
+#include "common/Thread.h"
+
+#include "EntryQueue.h"
+
+namespace ceph {
+namespace logging {
+
+class Graylog;
+class SubsystemMap;
+class Entry;
+
+class Log : private Thread
+{
+  Log **m_indirect_this;
+
+  SubsystemMap *m_subs;
+
+  pthread_mutex_t m_queue_mutex;
+  pthread_mutex_t m_flush_mutex;
+  pthread_cond_t m_cond_loggers;
+  pthread_cond_t m_cond_flusher;
+
+  pthread_t m_queue_mutex_holder;
+  pthread_t m_flush_mutex_holder;
+
+  EntryQueue m_new;    ///< new entries
+  EntryQueue m_recent; ///< recent (less new) entries we've already written at low detail
+
+  std::string m_log_file;
+  int m_fd;
+  uid_t m_uid;
+  gid_t m_gid;
+
+  int m_fd_last_error;  ///< last error we say writing to fd (if any)
+
+  int m_syslog_log, m_syslog_crash;
+  int m_stderr_log, m_stderr_crash;
+  int m_graylog_log, m_graylog_crash;
+
+  shared_ptr<Graylog> m_graylog;
+
+  bool m_stop;
+
+  int m_max_new, m_max_recent;
+
+  bool m_inject_segv;
+
+  void *entry() override;
+
+  void _flush(EntryQueue *q, EntryQueue *requeue, bool crash);
+
+  void _log_message(const char *s, bool crash);
+
+public:
+  explicit Log(SubsystemMap *s);
+  ~Log() override;
+
+  void set_flush_on_exit();
+
+  void set_max_new(int n);
+  void set_max_recent(int n);
+  void set_log_file(std::string fn);
+  void reopen_log_file();
+  void chown_log_file(uid_t uid, gid_t gid);
+
+  void flush();
+
+  void dump_recent();
+
+  void set_syslog_level(int log, int crash);
+  void set_stderr_level(int log, int crash);
+  void set_graylog_level(int log, int crash);
+
+  void start_graylog();
+  void stop_graylog();
+
+  shared_ptr<Graylog> graylog() { return m_graylog; }
+
+  Entry *create_entry(int level, int subsys);
+  Entry *create_entry(int level, int subsys, size_t* expected_size);
+  void submit_entry(Entry *e);
+
+  void start();
+  void stop();
+
+  /// true if the log lock is held by our thread
+  bool is_inside_log_lock();
+
+  /// induce a segv on the next log event
+  void inject_segv();
+  void reset_segv();
+};
+
+}
+}
+
+#endif