profiler: move perftools glue into perfglue/

Signed-off-by: Colin McCabe <colin.mccabe@dreamhost.com>

3 files changed, 112 insertions, 0 deletions

diff --git a/src/perfglue/cpu_profiler.cc b/src/perfglue/cpu_profiler.cc
new file mode 100644
index 00000000000..856b96b2f9d
--- /dev/null
+++ b/src/perfglue/cpu_profiler.cc
@@ -0,0 +1,60 @@
+// -*- 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) 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.
+ *
+ */
+
+#include "common/LogClient.h"
+#include "perfglue/cpu_profiler.h"
+
+#include <google/profiler.h>
+
+void cpu_profiler_handle_command(const std::vector<std::string> &cmd,
+				 LogClient &clog)
+{
+  if (cmd[1] == "start") {
+    if (cmd.size() < 3) {
+      clog.info() << "cpu_profiler: you must give an argument to start: a "
+	          << "file name to log to.\n";
+      return;
+    }
+    const char *file = cmd[2].c_str();
+    int r = ProfilerStart(file);
+    clog.info() << "cpu_profiler: starting logging to " << file
+		<< ", r=" << r << "\n";
+  }
+  else if (cmd[1] == "status") {
+    if (ProfilingIsEnabledForAllThreads())
+      clog.info() << "cpu_profiler is enabled\n";
+    else
+      clog.info() << "cpu_profiler is not enabled\n";
+    ProfilerState st;
+    ProfilerGetCurrentState(&st);
+    clog.info() << "cpu_profiler " << (st.enabled ? "enabled":"not enabled")
+		<< " start_time " << st.start_time
+		<< " profile_name " << st.profile_name
+		<< " samples " << st.samples_gathered
+		<< "\n";
+  }
+  else if (cmd[1] == "flush") {
+    clog.info() << "cpu_profiler: flushing\n";
+    ProfilerFlush();
+  }
+  else if (cmd[1] == "stop") {
+    clog.info() << "cpu_profiler: flushing and stopping\n";
+    ProfilerFlush();
+    ProfilerStop();
+  }
+  else {
+    clog.info() << "can't understand cpu_profiler command. Expected one of: "
+		<< "start,status,flush,stop.\n";
+  }
+}
diff --git a/src/perfglue/cpu_profiler.h b/src/perfglue/cpu_profiler.h
new file mode 100644
index 00000000000..a5b6a97ec58
--- /dev/null
+++ b/src/perfglue/cpu_profiler.h
@@ -0,0 +1,27 @@
+// -*- 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) 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_PERFGLUE_CPU_PROFILER
+
+/*
+ * Ceph glue for the Google Perftools CPU profiler
+ */
+#include <string>
+#include <vector>
+
+class LogClient;
+
+void cpu_profiler_handle_command(const std::vector<std::string> &cmd,
+				 LogClient &clog);
+
+#endif
diff --git a/src/perfglue/disabled_stubs.cc b/src/perfglue/disabled_stubs.cc
new file mode 100644
index 00000000000..ad5b23bcfa3
--- /dev/null
+++ b/src/perfglue/disabled_stubs.cc
@@ -0,0 +1,25 @@
+// -*- 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) 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.
+ *
+ */
+
+#include "common/LogClient.h"
+#include "perfglue/cpu_profiler.h"
+
+#include <vector>
+#include <string>
+
+void cpu_profiler_handle_command(const std::vector<std::string> &cmd,
+				 LogClient &clog)
+{
+  clog.info() << "cpu_profiler support not linked in\n";
+}