public IntPtr LoadLibrary(string fileName, string platformName = null)
{
fileName = this.FixUpLibraryName(fileName);
lock (this.syncLock) {
if (!this.loadedAssemblies.ContainsKey(fileName))
{
if (platformName == null)
{
platformName = SystemManager.GetPlatformName();
}
LibraryLoaderTrace.TraceInformation("Current platform: " + platformName);
var dllHandle = this.CheckExecutingAssemblyDomain(fileName, platformName);
if (dllHandle == IntPtr.Zero)
{
dllHandle = this.CheckCurrentAppDomain(fileName, platformName);
}
if (dllHandle == IntPtr.Zero)
{
dllHandle = this.CheckWorkingDirecotry(fileName, platformName);
}
if (dllHandle != IntPtr.Zero)
{
this.loadedAssemblies[fileName] = dllHandle;
}
else
{
LibraryLoaderTrace.TraceError("Failed to find library \"{0}\" for platform {1}.", fileName, platformName);
}
}
}
return(this.loadedAssemblies[fileName]);
}
public bool FreeLibrary(string fileName)
{
fileName = this.FixUpLibraryName(fileName);
lock (this.syncLock) {
if (!this.IsLibraryLoaded(fileName))
{
LibraryLoaderTrace.TraceWarning("Failed to free library \"{0}\" because it is not loaded", fileName);
return(false);
}
if (this.logic.FreeLibrary(this.loadedAssemblies[fileName]))
{
this.loadedAssemblies.Remove(fileName);
return(true);
}
return(false);
}
}
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 LoadLibrary(string fileName)
{
var libraryHandle = IntPtr.Zero;
try {
LibraryLoaderTrace.TraceInformation("Trying to load native library \"{0}\"...", fileName);
libraryHandle = UnixLoadLibrary(fileName, RTLD_NOW);
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)
{
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);
}
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);
}
}
