added multithread qsort_arg_mt

cmake/BuildMisc.cmake

@@ -4,7 +4,6 @@ macro(libmisc_build)
     set(misc_src
         ${PROJECT_SOURCE_DIR}/third_party/crc32.c
         ${PROJECT_SOURCE_DIR}/third_party/proctitle.c
-        ${PROJECT_SOURCE_DIR}/third_party/qsort_arg.c
         ${PROJECT_SOURCE_DIR}/third_party/PMurHash.c
         ${PROJECT_SOURCE_DIR}/third_party/base64.c
     )

cmake/compiler.cmake

@@ -39,6 +39,18 @@ if((NOT HAVE_STD_C11 AND NOT HAVE_STD_GNU99) OR
         "Please consider upgrade to gcc 4.5+ or clang 3.2+.")
 endif()
 
+#
+# Check for an omp support
+#
+set(CMAKE_REQUIRED_FLAGS "-fopenmp")
+check_cxx_source_compiles("int main(void) { return 0; }" HAVE_OPENMP)
+set(CMAKE_REQUIRED_FLAGS "")
+if (HAVE_OPENMP)
+    message (STATUS "OpenMP support found")
+else ()
+    message (WARNING "OpenMP support not found")
+endif ()
+
 #
 # Perform build type specific configuration.
 #
@@ -114,6 +126,10 @@ macro(enable_tnt_compile_flags)
         )
     endif()
 
+    if (HAVE_OPENMP)
+        add_compile_flags("C;CXX" "-fopenmp")
+    endif()
+
     add_definitions("-D__STDC_FORMAT_MACROS=1")
     add_definitions("-D__STDC_LIMIT_MACROS=1")
     add_definitions("-D__STDC_CONSTANT_MACROS=1")

src/CMakeLists.txt

@@ -73,6 +73,7 @@ set (common_sources
      crc32.c
      rope.c
      ipc.cc
+     qsort_arg_mt.cc
      lua/fiber.cc
      lua/admin.cc
      lua/info.cc

src/box/tree_index.h

@@ -31,12 +31,13 @@
 
 #include "index.h"
 
+#include <qsort_arg_mt.h>
 #include <third_party/sptree.h>
 
 /**
  * Instantiate sptree definitions
  */
-SPTREE_DEF(index, realloc);
+SPTREE_DEF(index, realloc, qsort_arg_mt);
 
 class TreeIndex: public Index {
 public:

third_party/sptree.h

@@ -32,8 +32,6 @@
 #include <stdlib.h>
 #include <math.h>
 
-#include <third_party/qsort_arg.h>
-
 #if defined(__cplusplus)
 extern "C" {
 #endif /* defined(__cplusplus) */
@@ -99,7 +97,7 @@ typedef struct sptree_node_pointers {
  *   void* sptree_NAME_iterator_reverse_next(sptree_NAME_iterator *i)
  */
 
-#define SPTREE_DEF(name, realloc)                                                         \
+#define SPTREE_DEF(name, realloc, qsort_arg)                                                         \
 typedef int (*sptree_##name##_compare)(const void *, const void *, void *);               \
                                                                                           \
 typedef struct sptree_##name {                                                            \