Adding upstream version 18.2.2.upstream/18.2.2

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

1 files changed, 82 insertions, 0 deletions

diff --git a/src/erasure-code/ErasureCodePlugin.h b/src/erasure-code/ErasureCodePlugin.h
new file mode 100644
index 000000000..f3d122bd5
--- /dev/null
+++ b/src/erasure-code/ErasureCodePlugin.h
@@ -0,0 +1,82 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*- 
+// vim: ts=8 sw=2 smarttab
+/*
+ * Ceph distributed storage system
+ *
+ * Copyright (C) 2013,2014 Cloudwatt <libre.licensing@cloudwatt.com>
+ * Copyright (C) 2014 Red Hat <contact@redhat.com>
+ *
+ * Author: Loic Dachary <loic@dachary.org>
+ *
+ *  This library is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU Lesser General Public
+ *  License as published by the Free Software Foundation; either
+ *  version 2.1 of the License, or (at your option) any later version.
+ * 
+ */
+
+#ifndef CEPH_ERASURE_CODE_PLUGIN_H
+#define CEPH_ERASURE_CODE_PLUGIN_H
+
+#include "common/ceph_mutex.h"
+#include "ErasureCodeInterface.h"
+
+extern "C" {
+  const char *__erasure_code_version();
+  int __erasure_code_init(char *plugin_name, char *directory);
+}
+
+namespace ceph {
+
+  class ErasureCodePlugin {
+  public:
+    void *library;
+
+    ErasureCodePlugin() :
+      library(0) {}
+    virtual ~ErasureCodePlugin() {}
+
+    virtual int factory(const std::string &directory,
+			ErasureCodeProfile &profile,
+                        ErasureCodeInterfaceRef *erasure_code,
+			std::ostream *ss) = 0;
+  };
+
+  class ErasureCodePluginRegistry {
+  public:
+    ceph::mutex lock = ceph::make_mutex("ErasureCodePluginRegistry::lock");
+    bool loading = false;
+    bool disable_dlclose = false;
+    std::map<std::string,ErasureCodePlugin*> plugins;
+
+    static ErasureCodePluginRegistry singleton;
+
+    ErasureCodePluginRegistry();
+    ~ErasureCodePluginRegistry();
+
+    static ErasureCodePluginRegistry &instance() {
+      return singleton;
+    }
+
+    int factory(const std::string &plugin,
+		const std::string &directory,
+		ErasureCodeProfile &profile,
+		ErasureCodeInterfaceRef *erasure_code,
+		std::ostream *ss);
+
+    int add(const std::string &name, ErasureCodePlugin *plugin);
+    int remove(const std::string &name);
+    ErasureCodePlugin *get(const std::string &name);
+
+    int load(const std::string &plugin_name,
+	     const std::string &directory,
+	     ErasureCodePlugin **plugin,
+	     std::ostream *ss);
+
+    int preload(const std::string &plugins,
+		const std::string &directory,
+		std::ostream *ss);
+  };
+}
+
+#endif