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/***********************************************************************/
/* */
/* CamlIDL */
/* */
/* Xavier Leroy, projet Cristal, INRIA Rocquencourt */
/* */
/* Copyright 1999 Institut National de Recherche en Informatique et */
/* en Automatique. All rights reserved. This file is distributed */
/* under the terms of the GNU Library General Public License. */
/* */
/***********************************************************************/
/* $Id: cfactory.cpp,v 1.9 2004-07-08 09:48:33 xleroy Exp $ */
/* The class factory and DLL support */
#include <string.h>
extern "C" {
#include <caml/mlvalues.h>
#include <caml/memory.h>
#include <caml/alloc.h>
#include <caml/fail.h>
#include <caml/callback.h>
#include <caml/version.h>
#include "camlidlruntime.h"
}
#include "comstuff.h"
#include "registry.h"
#ifdef __CYGWIN32__
#include <sys/param.h>
#define _MAX_PATH MAXPATHLEN
#endif
/* Count of server locks */
static long camlidl_num_server_locks = 0;
/* The class factory */
class camlidl_factory : public IClassFactory
{
private:
struct camlidl_comp * comp;
long refcount;
public:
virtual HRESULT __stdcall QueryInterface(const IID& iid, void** ppv)
{
if ((iid == IID_IUnknown) || (iid == IID_IClassFactory)) {
*ppv = (IClassFactory*)(this);
AddRef();
return S_OK;
} else {
*ppv = NULL ;
return E_NOINTERFACE ;
}
}
virtual ULONG __stdcall AddRef()
{
return InterlockedIncrement(&refcount);
}
virtual ULONG __stdcall Release()
{
ULONG res = InterlockedDecrement(&refcount);
if (res == 0) delete this;
return res;
}
virtual HRESULT __stdcall CreateInstance(IUnknown* pUnknownOuter,
const IID& iid,
void** object)
{
struct camlidl_ctx_struct ctx = { CAMLIDL_ADDREF, NULL };
// Aggregation is not supported yet
if (pUnknownOuter != NULL) return CLASS_E_NOAGGREGATION;
// Create the component
value vcomp =
callback(Field(this->comp->compdata, COMPDATA_CREATE), Val_unit);
IUnknown * comp = (IUnknown *) camlidl_unpack_interface(vcomp, &ctx);
// Get the requested interface
HRESULT res = comp->QueryInterface(iid, object);
// Release the initial pointer to the component
// (if QueryInterface failed, it will destroy itself)
comp->Release();
// Return result of QueryInterface
return res;
}
virtual HRESULT __stdcall LockServer(BOOL bLock)
{
if (bLock)
InterlockedIncrement(&camlidl_num_server_locks);
else
InterlockedDecrement(&camlidl_num_server_locks);
return S_OK ;
}
// Constructor
camlidl_factory(struct camlidl_comp * comp_init)
{
comp = comp_init;
refcount = 1;
}
};
// The class factory server
STDAPI DllGetClassObject(const CLSID & clsid, const IID & iid, void ** object)
{
struct camlidl_comp * c;
for (c = camlidl_registered_components; c != NULL; c = c->next) {
if (clsid == GUID_val(Field(c->compdata, COMPDATA_CLSID))) {
// Create class factory
camlidl_factory * f = new camlidl_factory(c);
if (f == NULL) return E_OUTOFMEMORY;
// Get requested interface
HRESULT res = f->QueryInterface(iid, object);
// Release the class factory;
// if QueryInterface failed, it will free itself
f->Release();
// Return result of QueryInterface
return res;
}
}
*object = NULL;
return CLASS_E_CLASSNOTAVAILABLE;
}
/* Server registration */
STDAPI DllRegisterServer()
{
struct camlidl_comp * c;
for (c = camlidl_registered_components; c != NULL; c = c->next) {
HRESULT retcode =
RegisterServer(
camlidl_module_handle,
GUID_val(Field(c->compdata, COMPDATA_CLSID)),
String_val(Field(c->compdata, COMPDATA_FRIENDLY_NAME)),
String_val(Field(c->compdata, COMPDATA_VER_IND_PROG_ID)),
String_val(Field(c->compdata, COMPDATA_PROG_ID)));
if (FAILED(retcode)) return retcode;
}
return S_OK;
}
/* Server unregistration */
STDAPI DllUnregisterServer()
{
struct camlidl_comp * c;
for (c = camlidl_registered_components; c != NULL; c = c->next) {
HRESULT retcode =
UnregisterServer(
GUID_val(Field(c->compdata, COMPDATA_CLSID)),
String_val(Field(c->compdata, COMPDATA_VER_IND_PROG_ID)),
String_val(Field(c->compdata, COMPDATA_PROG_ID)));
if (FAILED(retcode)) return retcode;
}
return S_OK;
}
/* Can DLL unload now? */
STDAPI DllCanUnloadNow()
{
if (camlidl_num_components == 0 && camlidl_num_server_locks == 0)
return S_OK;
else
return S_FALSE;
}
#if 0
#include <fcntl.h>
#include <sys/stat.h>
#include <io.h>
#include <stdio.h>
#endif
/* DLL entry point */
#if OCAML_VERSION_MAJOR > 4 || (OCAML_VERSION_MAJOR == 4 && OCAML_VERSION_MINOR >= 6)
#define USE_WIDE_CHARS
#else
typedef char char_os;
#undef USE_WIDE_CHARS
#endif
BOOL APIENTRY DllMain(HANDLE module, DWORD reason, void *reserved)
{
char_os * argv[2];
char_os dll_path[_MAX_PATH];
switch(reason) {
case DLL_PROCESS_ATTACH:
#ifdef USE_WIDE_CHARS
GetModuleFileNameW( (HMODULE) module, dll_path, _MAX_PATH );
#else
GetModuleFileNameA( (HMODULE) module, dll_path, _MAX_PATH );
#endif
argv[0] = dll_path;
argv[1] = NULL;
camlidl_module_handle = (HMODULE) module;
#if 0
int fd = open("/tmp/camllog", O_RDWR|O_TRUNC|O_CREAT, _S_IWRITE|_S_IREAD);
dup2(fd, 1);
dup2(fd, 2);
close(fd);
#endif
caml_startup(argv);
break;
/* TODO: free all memory when DLL detached */
}
return TRUE;
}
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