private void LoadNecessaryDll()
{
hNecessaryDll = new int[JavaBasicConst.NECESSARY_DLL_NUMBER];
hNecessaryDll[0] = NativeAPI.LoadLibrary(JavaBasicConst.N1_DLL);
}
public bool InitializeJVM(string[] jvmoptions)
{
//LoadNecessaryDll();
hJvmDll = NativeAPI.LoadLibrary(jvm_path);
if (0 == hJvmDll)
{
return(false);
}
m_JNI_CreateJavaVM pCreateJavaVM =
(m_JNI_CreateJavaVM)NativeAPI.GetProcDelegateEx(hJvmDll, "JNI_CreateJavaVM", typeof(m_JNI_CreateJavaVM));
if (null == pCreateJavaVM)
{
return(false);
}
IntPtr[] optsptr = new IntPtr[jvmoptions.Length];
for (int i = 0; i < jvmoptions.Length; i++)
{
optsptr[i] = IntPtr.Zero;
}
int[] optstmp = new int[2 * jvmoptions.Length];
IntPtr options = IntPtr.Zero;
int[] jvm_p = { 0 };
int[] env_p = { 0 };
int jvmp = 0, envp = 0;
int[] jvmflist = new int[JavaBasicConst.JNI_JVM_INT];
int[] envflist = new int[JavaBasicConst.JNI_ENV_INT];
IntPtr jvm_p_p = IntPtr.Zero, env_p_p = IntPtr.Zero;
// init options
try
{
int i;
for (i = 0; i < jvmoptions.Length; i++)
{
optsptr[i] = NativeMemory.NewString(jvmoptions[i]);
optstmp[i * 2] = optsptr[i].ToInt32();
optstmp[i * 2 + 1] = 0;
}
options = NativeMemory.NewSpace(sizeof(int) * optstmp.Length);
NativeMemory.CopyInt(options, optstmp);
JavaVMInitArgs args = new JavaVMInitArgs();
args.version = JavaBasicConst.JNI_VERSION_1_6;
//args.version = JavaBasicConst.JNI_VERSION_1_7;
args.nOptions = 3;
args.options = options.ToInt32();
args.ignoreUnrecognized = JavaBasicConst.JNI_TRUE;
// init jvm,env
for (i = 0; i < jvmflist.Length; i++)
{
jvmflist[i] = 0;
}
for (i = 0; i < envflist.Length; i++)
{
envflist[i] = 0;
}
jvm_p_p = NativeMemory.NewSpace(sizeof(int));
env_p_p = NativeMemory.NewSpace(sizeof(int));
// create a jvm
int _res = pCreateJavaVM(jvm_p_p, env_p_p, ref args);
if (_res < 0)
{
throw new Exception("failed to create a jvm");
}
NativeMemory.CopyIntBack(jvm_p_p, jvm_p);
NativeMemory.CopyIntBack(env_p_p, env_p);
jvmp = jvm_p[0];
envp = env_p[0];
NativeMemory.CopyIntBack(new IntPtr(jvmp), jvm_p);
NativeMemory.CopyIntBack(new IntPtr(envp), env_p);
NativeMemory.CopyIntBack(new IntPtr(jvm_p[0]), jvmflist);
NativeMemory.CopyIntBack(new IntPtr(env_p[0]), envflist);
// TODO: process jvmflist, envflist
jvm = new JavaVM(jvmp, jvmflist);
env = new JavaENV(envp, envflist);
}
catch (Exception e)
{
Console.WriteLine(e.Message);
}
// dispose IntPtr
NativeMemory.Dispose(options);
foreach (IntPtr x in optsptr)
{
NativeMemory.Dispose(x);
}
NativeMemory.Dispose(jvm_p_p);
NativeMemory.Dispose(env_p_p);
return(true);
}
