private JvmManager()
{
var jvmDllPath = Environment.GetEnvironmentVariable("JVM_DLL_PATH");
var options =
Environment.GetEnvironmentVariable("JAVA_OPTS")?.Split(' ').Select(JavaOption.DefineProperty)
.ToArray() ?? new JavaOption[0];
jvmLibrary = new JvmLibrary(LibraryLoader.LoadUnmanagedLibrary(jvmDllPath));
var vmArgs = new JavaVmInitArgs();
jvmLibrary.GetDefaultJavaVmInitArgs(ref vmArgs);
vmArgs.Version = JniVersion;
vmArgs.NOptions = options.Length;
vmArgs.Options = Marshal.AllocHGlobal(vmArgs.NOptions * Marshal.SizeOf(typeof(JavaVmOption)));
var vmArgsP = Marshal.AllocHGlobal(Marshal.SizeOf(vmArgs));
try
{
var optionsLocation = 0;
foreach (var currentOption in options)
{
Marshal.StructureToPtr(currentOption.ActualOption,
vmArgs.Options + optionsLocation * Marshal.SizeOf(typeof(JavaVmOption)), false);
optionsLocation++;
}
Marshal.StructureToPtr(vmArgs, vmArgsP, false);
unsafe
{
IntPtr envP;
IntPtr vmP;
jvmLibrary.CreateJavaVm(&vmP, &envP, vmArgsP);
vm = new JavaVmWrapper(vmP);
env = new JniEnvWrapper(envP);
}
//todo register all
}
finally
{
Marshal.DestroyStructure(vmArgsP, typeof(JavaVmInitArgs));
Marshal.FreeHGlobal(vmArgsP);
Marshal.FreeHGlobal(vmArgs.Options);
}
}
public JniEnvWrapper GetEnv()
{
if (env != null)
{
return(env);
}
unsafe
{
IntPtr envP;
vm.AttachCurrentThread(&envP, IntPtr.Zero);
env = new JniEnvWrapper(envP);
return(env);
}
}