static Interop()
{
if (LibraryLoader.CustomLoadLibrary != null)
{
LibraryLoader.SymbolLookupDelegate symbolLookup;
var hiredisxAddr = LibraryLoader.CustomLoadLibrary("Hiredisx", out symbolLookup);
InitializeDelegates(hiredisxAddr, symbolLookup);
}
}
private static void InitializeDelegates(IntPtr hiredisxAddr, LibraryLoader.SymbolLookupDelegate lookup)
{
// When running under mono and the native hiredisx libraries are in a non-standard location (e.g. are placed in application_dir/x86|x64),
// we cannot just load the native libraries and have everything automatically work. Hence all these delegates.
// TODO: The performance impact of this over conventional P/Invoke is evidently not good - there is about a 50% increase in overhead.
// http://ybeernet.blogspot.com/2011/03/techniques-of-calling-unmanaged-code.html
// There appears to be an alternative "dllmap" approach:
// http://www.mono-project.com/Interop_with_Native_Libraries
// but this requires config file entries.
// Perhaps the method of calling native methods would better depend on which platform is being used.
// anyway, delegates work everywhere so that's what we'll use for now. get it working first, optimize later.
redisConnectWithTimeoutX = (redisConnectWithTimeoutX_delegate)Marshal.GetDelegateForFunctionPointer(lookup(hiredisxAddr, "redisConnectWithTimeoutX"), typeof(redisConnectWithTimeoutX_delegate));
redisCommandX = (redisCommandX_delegate)Marshal.GetDelegateForFunctionPointer(lookup(hiredisxAddr, "redisCommandX"), typeof(redisCommandX_delegate));
retrieveElementX = (retrieveElementX_delegate)Marshal.GetDelegateForFunctionPointer(lookup(hiredisxAddr, "retrieveElementX"), typeof(retrieveElementX_delegate));
freeReplyObjectX = (freeReplyObjectX_delegate)Marshal.GetDelegateForFunctionPointer(lookup(hiredisxAddr, "freeReplyObjectX"), typeof(freeReplyObjectX_delegate));
retrieveStringAndFreeReplyObjectX = (retrieveStringAndFreeReplyObjectX_delegate)Marshal.GetDelegateForFunctionPointer(lookup(hiredisxAddr, "retrieveStringAndFreeReplyObjectX"), typeof(retrieveStringAndFreeReplyObjectX_delegate));
retrieveElementStringX = (retrieveElementStringX_delegate)Marshal.GetDelegateForFunctionPointer(lookup(hiredisxAddr, "retrieveElementStringX"), typeof(retrieveElementStringX_delegate));
setupArgumentArrayX = (setupArgumentArrayX_delegate)Marshal.GetDelegateForFunctionPointer(lookup(hiredisxAddr, "setupArgumentArrayX"), typeof(setupArgumentArrayX_delegate));
setArgumentX = (setArgumentX_delegate)Marshal.GetDelegateForFunctionPointer(lookup(hiredisxAddr, "setArgumentX"), typeof(setArgumentX_delegate));
}
