1 files changed, 109 insertions, 0 deletions
diff --git a/src/test/ObjectMap/test_keyvaluedb_atomicity.cc b/src/test/ObjectMap/test_keyvaluedb_atomicity.cc
new file mode 100644
index 000000000..f93e68c4a
--- /dev/null
+++ b/src/test/ObjectMap/test_keyvaluedb_atomicity.cc
@@ -0,0 +1,109 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+#include <pthread.h>
+#include "include/buffer.h"
+#include "kv/KeyValueDB.h"
+#include <sys/types.h>
+#include <dirent.h>
+#include <string>
+#include <vector>
+#include <boost/scoped_ptr.hpp>
+#include <iostream>
+#include <sstream>
+#include "stdlib.h"
+#include "global/global_context.h"
+
+using namespace std;
+
+const string CONTROL_PREFIX = "CONTROL";
+const string PRIMARY_PREFIX = "PREFIX";
+const int NUM_COPIES = 100;
+const int NUM_THREADS = 30;
+
+string prefix_gen(int i) {
+  stringstream ss;
+  ss << PRIMARY_PREFIX << "_" << i << std::endl;
+  return ss.str();
+}
+
+int verify(KeyValueDB *db) {
+  // Verify
+  {
+    map<int, KeyValueDB::Iterator> iterators;
+    for (int i = 0; i < NUM_COPIES; ++i) {
+      iterators[i] = db->get_iterator(prefix_gen(i));
+      iterators[i]->seek_to_first();
+    }
+    while (iterators.rbegin()->second->valid()) {
+      for (map<int, KeyValueDB::Iterator>::iterator i = iterators.begin();
+	   i != iterators.end();
+	   ++i) {
+	ceph_assert(i->second->valid());
+	ceph_assert(i->second->key() == iterators.rbegin()->second->key());
+	bufferlist r = i->second->value();
+	bufferlist l = iterators.rbegin()->second->value();
+	i->second->next();
+      }
+    }
+    for (map<int, KeyValueDB::Iterator>::iterator i = iterators.begin();
+	 i != iterators.end();
+	 ++i) {
+      ceph_assert(!i->second->valid());
+    }
+  }
+  return 0;
+}
+
+void *write(void *_db) {
+  KeyValueDB *db = static_cast<KeyValueDB*>(_db);
+  std::cout << "Writing..." << std::endl;
+  for (int i = 0; i < 12000; ++i) {
+    if (!(i % 10)) {
+      std::cout << "Iteration: " << i << std::endl;
+    }
+    int key_num = rand();
+    stringstream key;
+    key << key_num << std::endl;
+    map<string, bufferlist> to_set;
+    stringstream val;
+    val << i << std::endl;
+    bufferptr bp(val.str().c_str(), val.str().size() + 1);
+    to_set[key.str()].push_back(bp);
+    
+    KeyValueDB::Transaction t = db->get_transaction();
+    for (int j = 0; j < NUM_COPIES; ++j) {
+      t->set(prefix_gen(j), to_set);
+    }
+    ceph_assert(!db->submit_transaction(t));
+  }
+  return 0;
+}
+
+int main() {
+  char *path = getenv("OBJECT_MAP_PATH");
+  boost::scoped_ptr< KeyValueDB > db;
+  if (!path) {
+    std::cerr << "No path found, OBJECT_MAP_PATH undefined" << std::endl;
+    return 0;
+  }
+  string strpath(path);
+  std::cerr << "Using path: " << strpath << std::endl;
+  KeyValueDB *store = KeyValueDB::create(g_ceph_context, "leveldb", strpath);
+  ceph_assert(!store->create_and_open(std::cerr));
+  db.reset(store);
+
+  verify(db.get());
+
+  vector<pthread_t> threads(NUM_THREADS);
+  for (vector<pthread_t>::iterator i = threads.begin();
+       i != threads.end();
+       ++i) {
+    pthread_create(&*i, 0, &write, static_cast<void *>(db.get()));
+  }
+  for (vector<pthread_t>::iterator i = threads.begin();
+       i != threads.end();
+       ++i) {
+    void *tmp;
+    pthread_join(*i, &tmp);
+  }
+  verify(db.get());
+}