in-memory collections, seem to work now

documentation and some helper functions are still missing

arangod/V8Server/v8-vocbase.cpp

@@ -1312,10 +1312,10 @@ static v8::Handle<v8::Value> CreateVocBase (v8::Arguments const& argv, TRI_col_t
     }
 
     v8::Handle<v8::Object> p = argv[1]->ToObject();
-    v8::Handle<v8::String> waitForSyncKey = v8::String::New("waitForSync");
+    v8::Handle<v8::String> isSystemKey      = v8::String::New("isSystem");
-    v8::Handle<v8::String> journalSizeKey = v8::String::New("journalSize");
+    v8::Handle<v8::String> isVolatileKey    = v8::String::New("isVolatile");
-    v8::Handle<v8::String> isSystemKey = v8::String::New("isSystem");
+    v8::Handle<v8::String> journalSizeKey   = v8::String::New("journalSize");
-    v8::Handle<v8::String> volatileKey = v8::String::New("isVolatile");
+    v8::Handle<v8::String> waitForSyncKey   = v8::String::New("waitForSync");
     v8::Handle<v8::String> createOptionsKey = v8::String::New("createOptions");
 
     if (p->Has(journalSizeKey)) {
@@ -1347,14 +1347,21 @@ static v8::Handle<v8::Value> CreateVocBase (v8::Arguments const& argv, TRI_col_t
       parameter._isSystem = TRI_ObjectToBoolean(p->Get(isSystemKey));
     }
 
-    if (p->Has(volatileKey)) {
+    if (p->Has(isVolatileKey)) {
-      parameter._isVolatile = TRI_ObjectToBoolean(p->Get(volatileKey));
+#ifdef TRI_HAVE_ANONYMOUS_MMAP
+      parameter._isVolatile = TRI_ObjectToBoolean(p->Get(isVolatileKey));
+#else
+      TRI_FreeCollectionInfoOptions(&parameter);
+      return scope.Close(v8::ThrowException(TRI_CreateErrorObject(TRI_ERROR_ILLEGAL_OPTION, "volatile collections are not supported on this platform", true)));
+#endif
     }
     
     if (parameter._isVolatile && parameter._waitForSync) {
       // the combination of waitForSync and isVolatile makes no sense
-      parameter._waitForSync = false;
+      TRI_FreeCollectionInfoOptions(&parameter);
+      return scope.Close(v8::ThrowException(TRI_CreateErrorObject(TRI_ERROR_BAD_PARAMETER, "volatile collections do not support the waitForSync option", true)));
     }
+
   }
   else {
     TRI_InitCollectionInfo(vocbase, &parameter, name.c_str(), collectionType, effectiveSize, 0);

arangod/VocBase/datafile.c

@@ -751,7 +751,12 @@ TRI_datafile_t* TRI_CreateDatafile (char const* filename,
 
   // create either an anonymous or a physical datafile
   if (filename == NULL) {
+#ifdef TRI_HAVE_ANONYMOUS_MMAP
     datafile = TRI_CreateAnonymousDatafile(maximalSize);
+#else
+    // system does not support anonymous mmap
+    return NULL;
+#endif
   }
   else {
     datafile = TRI_CreatePhysicalDatafile(filename, maximalSize);
@@ -809,6 +814,8 @@ TRI_datafile_t* TRI_CreateDatafile (char const* filename,
 /// @brief creates a new anonymous datafile
 ////////////////////////////////////////////////////////////////////////////////
 
+#ifdef TRI_HAVE_ANONYMOUS_MMAP
+
 TRI_datafile_t* TRI_CreateAnonymousDatafile (const TRI_voc_size_t maximalSize) {
   TRI_datafile_t* datafile;
   ssize_t res;
@@ -818,6 +825,7 @@ TRI_datafile_t* TRI_CreateAnonymousDatafile (const TRI_voc_size_t maximalSize) {
   int fd;
 
   // TODO: find a good workaround for Windows
+  // TODO: make this more portable
 
 #ifdef MAP_ANONYMOUS
   // this is required for "real" anonymous regions
@@ -872,6 +880,8 @@ TRI_datafile_t* TRI_CreateAnonymousDatafile (const TRI_voc_size_t maximalSize) {
   return datafile;
 }
 
+#endif
+
 ////////////////////////////////////////////////////////////////////////////////
 /// @brief creates a new physical datafile
 ////////////////////////////////////////////////////////////////////////////////

arangod/VocBase/datafile.h

@@ -434,7 +434,9 @@ TRI_datafile_t* TRI_CreateDatafile (char const*,
 /// automatically adds a @ref TRI_df_footer_marker_t to the file.
 ////////////////////////////////////////////////////////////////////////////////
 
+#ifdef TRI_HAVE_ANONYMOUS_MMAP
 TRI_datafile_t* TRI_CreateAnonymousDatafile (TRI_voc_size_t);
+#endif
 
 ////////////////////////////////////////////////////////////////////////////////
 /// @brief creates a new physical datafile

lib/BasicsC/operating-system.h

@@ -114,6 +114,9 @@
 #define TRI_HAVE_STRTOLL                    1
 #define TRI_HAVE_STRTOULL                   1
 
+// TODO: add a feature check in configure
+#define TRI_HAVE_ANONYMOUS_MMAP             1
+
 #define TRI_OVERLOAD_FUNCS_SIZE_T           1
 #define TRI_MISSING_MEMRCHR                 1
 
@@ -335,6 +338,9 @@ typedef int socket_t;
 #define TRI_HAVE_STRTOLL                    1
 #define TRI_HAVE_STRTOULL                   1
 
+// TODO: add a feature check in configure
+#define TRI_HAVE_ANONYMOUS_MMAP             1
+
 #if __WORDSIZE == 64
 #define TRI_SIZEOF_SIZE_T                   8
 #define TRI_ALIGNOF_VOIDP                   8