fixed clock_gettime under MacOS X

CMakeLists.txt

@@ -105,6 +105,7 @@ set(BIN_ARANGOVPACK   arangovpack)
 set(TEST_BASICS_SUITE basics_suite)
 set(TEST_GEO_SUITE    geo_suite)
 set(PACKAGES_LIST)
+
 ################################################################################
 ## VERSION FILES
 ################################################################################
@@ -133,9 +134,10 @@ configure_file(
   NEWLINE_STYLE UNIX
 )
 
-
 ################################################################################
 ## Find the git revision
+################################################################################
+
 find_program (GIT_EXE git)
 if (DEFINED GIT_EXE AND IS_DIRECTORY "${CMAKE_SOURCE_DIR}/.git")
   execute_process(
@@ -328,7 +330,7 @@ if (MSVC)
   
   # https://blogs.msdn.microsoft.com/vcblog/2016/04/14/stl-fixes-in-vs-2015-update-2/
   # https://connect.microsoft.com/VisualStudio/feedback/details/1892487
-  #http://lists.boost.org/boost-users/2016/04/85968.php
+  # http://lists.boost.org/boost-users/2016/04/85968.php
   add_definitions("-D_ENABLE_ATOMIC_ALIGNMENT_FIX")
   
   set(MSVC_LIBS Shlwapi.lib;crypt32.lib;WINMM.LIB;Ws2_32.lib)
@@ -342,6 +344,25 @@ else ()
   )
 endif ()
 
+# broken clock_gettime on MacOSX
+SET(USE_LOCAL_CLOCK_GETTIME FALSE)
+
+if (APPLE)
+  TRY_RUN(RUN_CLOCK_GETTIME
+          COMPILE_CLOCK_GETTIME
+          ${PROJECT_BINARY_DIR}/test_clock_gettime
+          ${CMAKE_SOURCE_DIR}/cmake/test_clock_gettime.c
+          OUTPUT_VARIABLE OUTPUT_CLOCK_GETTIME)
+
+  if (${COMPILE_CLOCK_GETTIME} AND ${RUN_CLOCK_GETTIME} STREQUAL "FAILED_TO_RUN")
+    set(USE_LOCAL_CLOCK_GETTIME TRUE)
+  endif ()
+
+  if (USE_LOCAL_CLOCK_GETTIME) 
+    message(STATUS "using a home-made clock_gettime")
+  endif ()
+endif ()
+
 ################################################################################
 ## INCLUDE DIRECTORIES
 ################################################################################
@@ -909,4 +930,4 @@ add_custom_target(packages
   DEPENDS ${PACKAGES_LIST}
   )
 
-message(INFO " Building for git revision: ${ARANGODB_BUILD_REPOSITORY}")
+message(STATUS "building for git revision: ${ARANGODB_BUILD_REPOSITORY}")

README

@@ -0,0 +1,84 @@
+****** ArangoDB ******
+ArangoDB is a multi-model, open-source database with flexible data models for
+documents, graphs, and key-values. Build high performance applications using a
+convenient SQL-like query language or JavaScript extensions. Use ACID
+transactions if you require them. Scale horizontally with a few mouse clicks.
+The supported data models can be mixed in queries and allow ArangoDB to be the
+aggregation point for your data.
+To get started, try one of our 10 minutes tutorials in your favorite
+programming language or try one of our ArangoDB_Cookbook_recipes.
+For the impatient: download and install ArangoDB. Start the server arangod and
+point your browser to http://127.0.0.1:8529/.
+***** Key Features in ArangoDB *****
+    * Multi-Model: Documents, graphs and key-value pairs — model your data as
+      you see fit for your application.
+    * Joins: Conveniently join what belongs together for flexible ad-hoc
+      querying, less data redundancy.
+    * Transactions: Easy application development keeping your data consistent
+      and safe. No hassle in your client.
+Here is an AQL query that makes use of all those features:
+[AQL Query Example]
+Joins and transactions are key features for flexible, secure data designs,
+widely used in relational databases but lacking in many NoSQL products.
+However, there is no need to forgo them in ArangoDB. You decide how and when to
+use joins and strong consistency guarantees, without sacrificing performance
+and scalability.
+Furthermore, ArangoDB offers a JavaScript framework called Foxx that is
+executed in the database server with direct access to the data. Build your own
+data-centric microservices with a few lines of code:
+Microservice Example
+[Microservice Example]
+By extending the HTTP API with user code written in JavaScript, ArangoDB can be
+turned into a strict schema-enforcing persistence engine.
+Next step, bundle your Foxx application as a docker_container and get it
+running in the cloud.
+Other features of ArangoDB include:
+    * Schema-free schemata let you combine the space efficiency of MySQL with
+      the performance power of NoSQL
+    * Use a data-centric microservices approach with ArangoDB Foxx and fuse
+      your application-logic and database together for maximal throughput
+    * JavaScript for all: no language zoo, you can use one language from your
+      browser to your back-end
+    * ArangoDB is multi-threaded - exploit the power of all your cores
+    * Flexible data modeling: model your data as combination of key-value
+      pairs, documents or graphs - perfect for social relations
+    * Free index choice: use the correct index for your problem, be it a skip
+      list or a fulltext search
+    * Configurable durability: let the application decide if it needs more
+      durability or more performance
+    * Powerful query language (AQL) to retrieve and modify data
+    * Transactions: run queries on multiple documents or collections with
+      optional transactional consistency and isolation
+    * Replication and Sharding: set up the database in a master-slave
+      configuration or spread bigger datasets across multiple servers
+    * It is open source (Apache License 2.0)
+For more in-depth information read the design_goals_of_ArangoDB
+***** Latest Release - ArangoDB 3.0 *****
+The What's_new_in_ArangoDB_3.0 can be found in the documentation.
+Key features of the 3.0 release are:
+    * use of VelocyPack as internal storage format
+    * AQL improvements
+    * much better cluster state management
+    * Synchronous replication (master/master)
+    * unified APIs for CRUD operations
+    * persistent indexes
+    * upgraded version of V8
+    * new web admin interface
+    * Foxx improvements
+    * Logging improvements
+    * improved documentation
+***** More Information *****
+Please check the Installation_Manual for installation and compilation
+instructions.
+The User_Manual has an introductory chapter showing the basic operations of
+ArangoDB.
+***** Stay in Contact *****
+We really appreciate feature requests and bug reports. Please use our Github
+issue tracker for reporting them:
+https://github.com/arangodb/arangodb/issues
+You can use the Google group for improvements, feature requests, comments:
+http://www.arangodb.com/community
+StackOverflow is great for questions about AQL, usage scenarios etc.
+http://stackoverflow.com/questions/tagged/arangodb
+To chat with the community and the developers we offer a Slack chat:
+http://slack.arangodb.com/

cmake/test_clock_gettime.c

@@ -0,0 +1,9 @@
+#include <stdio.h>
+#include <time.h>
+
+int main() {
+  printf("-- testing clock_gettime\n");
+  struct timespec ts;
+  clock_gettime(CLOCK_REALTIME, &ts);
+  return 0;
+}

lib/CMakeLists.txt

@@ -97,7 +97,11 @@ else()
   message("-- Will not compile in hand-optimized assembler code for CRC32.")
 endif()
 
-
+if (USE_LOCAL_CLOCK_GETTIME)
+  SET(LIB_CLOCK_GETTIME
+    Utilities/clock_gettime.cpp
+  )
+endif ()
 
 add_library(${LIB_ARANGO} STATIC
   ${LIB_ARANGO_APPLE}
@@ -105,6 +109,7 @@ add_library(${LIB_ARANGO} STATIC
   ${LIB_ARANGO_POSIX}
   ${LIB_ARANGO_LINENOISE}
   ${LIB_ARANGO_VPACK}
+  ${LIB_CLOCK_GETTIME}
   ${LIB_ASM_SOURCES}
   ApplicationFeatures/ApplicationFeature.cpp
   ApplicationFeatures/ApplicationServer.cpp

lib/Utilities/clock_gettime.cpp

@@ -0,0 +1,60 @@
+/*
+ * From: https://github.com/tarantool/tarantool/tree/1.7/third_party
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above
+ *    copyright notice, this list of conditions and the
+ *    following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above
+ *    copyright notice, this list of conditions and the following
+ *    disclaimer in the documentation and/or other materials
+ *    provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY <COPYRIGHT HOLDER> ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
+ * <COPYRIGHT HOLDER> OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
+ * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <sys/time.h>
+#include <time.h>
+#include <cstdint>
+
+extern "C" {
+int clock_gettime(clockid_t clock_id, struct timespec* tp) {
+  tp->tv_nsec = 0;
+  tp->tv_sec = 0;
+  uint64_t tk;
+  struct timeval tv;
+  switch (clock_id) {
+    case CLOCK_REALTIME:
+    case CLOCK_MONOTONIC:
+      gettimeofday(&tv, 0);
+      tp->tv_sec = tv.tv_sec;
+      tp->tv_nsec = tv.tv_usec * 1000;
+      break;
+    case CLOCK_PROCESS_CPUTIME_ID:
+    case CLOCK_THREAD_CPUTIME_ID:
+      tk = clock();
+      tp->tv_sec = tk / CLOCKS_PER_SEC;
+      tp->tv_nsec = (tk % CLOCKS_PER_SEC) * (1000000000 / CLOCKS_PER_SEC);
+      break;
+    default:
+      return 0;
+  }
+  return 0;
+}
+}