public IntPtr LoadLibrary(string fileName)
{
var libraryHandle = IntPtr.Zero;
try
{
LibraryLoaderTrace.TraceInformation("Trying to load native library \"{0}\"...", fileName);
libraryHandle = UnixLoadLibrary(fileName, RtldNow);
if (libraryHandle != IntPtr.Zero)
{
LibraryLoaderTrace.TraceInformation("Successfully loaded native library \"{0}\", handle = {1}.", fileName, libraryHandle);
}
else
{
LibraryLoaderTrace.TraceError("Failed to load native library \"{0}\".\r\nCheck windows event log.", fileName);
}
}
catch (Exception e)
{
var lastError = UnixGetLastError();
LibraryLoaderTrace.TraceError("Failed to load native library \"{0}\".\r\nLast Error:{1}\r\nCheck inner exception and\\or windows event log.\r\nInner Exception: {2}", fileName, lastError, e.ToString());
}
return(libraryHandle);
}
public IntPtr GetProcAddress(IntPtr libraryHandle, string functionName)
{
try
{
LibraryLoaderTrace.TraceInformation("Trying to load native function \"{0}\" from the library with handle {1}...",
functionName, libraryHandle);
var functionHandle = WindowsGetProcAddress(libraryHandle, functionName);
if (functionHandle != IntPtr.Zero)
{
LibraryLoaderTrace.TraceInformation("Successfully loaded native function \"{0}\", function handle = {1}.",
functionName, functionHandle);
}
else
{
LibraryLoaderTrace.TraceError("Failed to load native function \"{0}\", function handle = {1}",
functionName, functionHandle);
}
return(functionHandle);
}
catch (Exception e)
{
var lastError = WindowsGetLastError();
LibraryLoaderTrace.TraceError("Failed to free native library with handle {0}.\r\nLast Error:{1}\r\nCheck inner exception and\\or windows event log.\r\nInner Exception: {2}", libraryHandle, lastError, e.ToString());
return(IntPtr.Zero);
}
}
public bool FreeLibrary(IntPtr libraryHandle)
{
try
{
LibraryLoaderTrace.TraceInformation("Trying to free native library with handle {0} ...", libraryHandle);
var isSuccess = WindowsFreeLibrary(libraryHandle);
if (isSuccess)
{
LibraryLoaderTrace.TraceInformation("Successfully freed native library with handle {0}.", libraryHandle);
}
else
{
LibraryLoaderTrace.TraceError("Failed to free native library with handle {0}.\r\nCheck windows event log.", libraryHandle);
}
return(isSuccess);
}
catch (Exception e)
{
var lastError = WindowsGetLastError();
LibraryLoaderTrace.TraceError("Failed to free native library with handle {0}.\r\nLast Error:{1}\r\nCheck inner exception and\\or windows event log.\r\nInner Exception: {2}", libraryHandle, lastError, e.ToString());
return(false);
}
}
public IntPtr GetProcAddress(IntPtr libraryHandle, string functionName)
{
UnixGetLastError(); // Clearing previous errors
LibraryLoaderTrace.TraceInformation("Trying to load native function \"{0}\" from the library with handle {1}...",
functionName, libraryHandle);
var functionHandle = UnixGetProcAddress(libraryHandle, functionName);
var errorPointer = UnixGetLastError();
if (errorPointer != IntPtr.Zero)
{
throw new Exception("dlsym: " + Marshal.PtrToStringAnsi(errorPointer));
}
if (functionHandle != IntPtr.Zero && errorPointer == IntPtr.Zero)
{
LibraryLoaderTrace.TraceInformation("Successfully loaded native function \"{0}\", function handle = {1}.",
functionName, functionHandle);
}
else
{
LibraryLoaderTrace.TraceError("Failed to load native function \"{0}\", function handle = {1}, error pointer = {2}",
functionName, functionHandle, errorPointer);
}
return(functionHandle);
}