mirror of
https://github.com/bulletphysics/bullet3
synced 2024-12-17 15:01:06 +00:00
446 lines
9.7 KiB
C
446 lines
9.7 KiB
C
/*
|
|
* xmlmodule.c : basic API for dynamic module loading added 2.6.17
|
|
*
|
|
* See Copyright for the status of this software.
|
|
*
|
|
* joelwreed@comcast.net
|
|
*
|
|
* http://www.fortran-2000.com/ArnaudRecipes/sharedlib.html
|
|
*/
|
|
|
|
#define IN_LIBXML
|
|
#include "libxml.h"
|
|
|
|
#include <string.h>
|
|
#include <libxml/xmlmemory.h>
|
|
#include <libxml/xmlerror.h>
|
|
#include <libxml/xmlmodule.h>
|
|
#include <libxml/globals.h>
|
|
|
|
#ifdef LIBXML_MODULES_ENABLED
|
|
|
|
struct _xmlModule {
|
|
unsigned char *name;
|
|
void *handle;
|
|
};
|
|
|
|
static void *xmlModulePlatformOpen(const char *name);
|
|
static int xmlModulePlatformClose(void *handle);
|
|
static int xmlModulePlatformSymbol(void *handle, const char *name, void **result);
|
|
|
|
/************************************************************************
|
|
* *
|
|
* module memory error handler *
|
|
* *
|
|
************************************************************************/
|
|
|
|
/**
|
|
* xmlModuleErrMemory:
|
|
* @extra: extra information
|
|
*
|
|
* Handle an out of memory condition
|
|
*/
|
|
static void
|
|
xmlModuleErrMemory(xmlModulePtr module, const char *extra)
|
|
{
|
|
const char *name = NULL;
|
|
|
|
if (module != NULL) {
|
|
name = (const char *) module->name;
|
|
}
|
|
|
|
__xmlRaiseError(NULL, NULL, NULL, NULL, NULL, XML_FROM_MODULE,
|
|
XML_ERR_NO_MEMORY, XML_ERR_FATAL, NULL, 0, extra,
|
|
name, NULL, 0, 0,
|
|
"Memory allocation failed : %s\n", extra);
|
|
}
|
|
|
|
/**
|
|
* xmlModuleOpen:
|
|
* @name: the module name
|
|
* @options: a set of xmlModuleOption
|
|
*
|
|
* Opens a module/shared library given its name or path
|
|
* TODO: options are not yet implemented.
|
|
*
|
|
* Returns a handle for the module or NULL in case of error
|
|
*/
|
|
xmlModulePtr
|
|
xmlModuleOpen(const char *name, int options ATTRIBUTE_UNUSED)
|
|
{
|
|
xmlModulePtr module;
|
|
|
|
module = (xmlModulePtr) xmlMalloc(sizeof(xmlModule));
|
|
if (module == NULL) {
|
|
xmlModuleErrMemory(NULL, "creating module");
|
|
return (NULL);
|
|
}
|
|
|
|
memset(module, 0, sizeof(xmlModule));
|
|
|
|
module->handle = xmlModulePlatformOpen(name);
|
|
|
|
if (module->handle == NULL) {
|
|
xmlFree(module);
|
|
__xmlRaiseError(NULL, NULL, NULL, NULL, NULL, XML_FROM_MODULE,
|
|
XML_MODULE_OPEN, XML_ERR_FATAL, NULL, 0, 0,
|
|
name, NULL, 0, 0, "failed to open %s\n", name);
|
|
return(NULL);
|
|
}
|
|
|
|
module->name = xmlStrdup((const xmlChar *) name);
|
|
return (module);
|
|
}
|
|
|
|
/**
|
|
* xmlModuleSymbol:
|
|
* @module: the module
|
|
* @name: the name of the symbol
|
|
* @symbol: the resulting symbol address
|
|
*
|
|
* Lookup for a symbol address in the given module
|
|
*
|
|
* Returns 0 if the symbol was found, or -1 in case of error
|
|
*/
|
|
int
|
|
xmlModuleSymbol(xmlModulePtr module, const char *name, void **symbol)
|
|
{
|
|
int rc = -1;
|
|
|
|
if ((NULL == module) || (symbol == NULL)) {
|
|
__xmlRaiseError(NULL, NULL, NULL, NULL, NULL, XML_FROM_MODULE,
|
|
XML_MODULE_OPEN, XML_ERR_FATAL, NULL, 0, 0,
|
|
NULL, NULL, 0, 0, "null parameter\n");
|
|
return rc;
|
|
}
|
|
|
|
rc = xmlModulePlatformSymbol(module->handle, name, symbol);
|
|
|
|
if (rc == -1) {
|
|
__xmlRaiseError(NULL, NULL, NULL, NULL, NULL, XML_FROM_MODULE,
|
|
XML_MODULE_OPEN, XML_ERR_FATAL, NULL, 0, 0,
|
|
name, NULL, 0, 0,
|
|
"failed to find symbol: %s\n",
|
|
(name == NULL ? "NULL" : name));
|
|
return rc;
|
|
}
|
|
|
|
return rc;
|
|
}
|
|
|
|
/**
|
|
* xmlModuleClose:
|
|
* @module: the module handle
|
|
*
|
|
* The close operations unload the associated module and free the
|
|
* data associated to the module.
|
|
*
|
|
* Returns 0 in case of success, -1 in case of argument error and -2
|
|
* if the module could not be closed/unloaded.
|
|
*/
|
|
int
|
|
xmlModuleClose(xmlModulePtr module)
|
|
{
|
|
int rc;
|
|
|
|
if (NULL == module) {
|
|
__xmlRaiseError(NULL, NULL, NULL, NULL, NULL, XML_FROM_MODULE,
|
|
XML_MODULE_CLOSE, XML_ERR_FATAL, NULL, 0, 0,
|
|
NULL, NULL, 0, 0, "null module pointer\n");
|
|
return -1;
|
|
}
|
|
|
|
rc = xmlModulePlatformClose(module->handle);
|
|
|
|
if (rc != 0) {
|
|
__xmlRaiseError(NULL, NULL, NULL, NULL, NULL, XML_FROM_MODULE,
|
|
XML_MODULE_CLOSE, XML_ERR_FATAL, NULL, 0, 0,
|
|
(const char *) module->name, NULL, 0, 0,
|
|
"failed to close: %s\n", module->name);
|
|
return -2;
|
|
}
|
|
|
|
rc = xmlModuleFree(module);
|
|
return (rc);
|
|
}
|
|
|
|
/**
|
|
* xmlModuleFree:
|
|
* @module: the module handle
|
|
*
|
|
* The free operations free the data associated to the module
|
|
* but does not unload the associated shared library which may still
|
|
* be in use.
|
|
*
|
|
* Returns 0 in case of success, -1 in case of argument error
|
|
*/
|
|
int
|
|
xmlModuleFree(xmlModulePtr module)
|
|
{
|
|
if (NULL == module) {
|
|
__xmlRaiseError(NULL, NULL, NULL, NULL, NULL, XML_FROM_MODULE,
|
|
XML_MODULE_CLOSE, XML_ERR_FATAL, NULL, 0, NULL,
|
|
NULL, NULL, 0, 0, "null module pointer\n");
|
|
return -1;
|
|
}
|
|
|
|
xmlFree(module->name);
|
|
xmlFree(module);
|
|
|
|
return (0);
|
|
}
|
|
|
|
#ifdef HAVE_DLOPEN
|
|
#ifdef HAVE_DLFCN_H
|
|
#include <dlfcn.h>
|
|
#endif
|
|
|
|
#ifndef RTLD_GLOBAL /* For Tru64 UNIX 4.0 */
|
|
#define RTLD_GLOBAL 0
|
|
#endif
|
|
|
|
/**
|
|
* xmlModulePlatformOpen:
|
|
* @name: path to the module
|
|
*
|
|
* returns a handle on success, and zero on error.
|
|
*/
|
|
|
|
static void *
|
|
xmlModulePlatformOpen(const char *name)
|
|
{
|
|
return dlopen(name, RTLD_GLOBAL | RTLD_NOW);
|
|
}
|
|
|
|
/*
|
|
* xmlModulePlatformClose:
|
|
* @handle: handle to the module
|
|
*
|
|
* returns 0 on success, and non-zero on error.
|
|
*/
|
|
|
|
static int
|
|
xmlModulePlatformClose(void *handle)
|
|
{
|
|
return dlclose(handle);
|
|
}
|
|
|
|
/*
|
|
* xmlModulePlatformSymbol:
|
|
* http://www.opengroup.org/onlinepubs/009695399/functions/dlsym.html
|
|
* returns 0 on success and the loaded symbol in result, and -1 on error.
|
|
*/
|
|
|
|
static int
|
|
xmlModulePlatformSymbol(void *handle, const char *name, void **symbol)
|
|
{
|
|
*symbol = dlsym(handle, name);
|
|
if (dlerror() != NULL) {
|
|
return -1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
#else /* ! HAVE_DLOPEN */
|
|
|
|
#ifdef HAVE_SHLLOAD /* HAVE_SHLLOAD */
|
|
#ifdef HAVE_DL_H
|
|
#include <dl.h>
|
|
#endif
|
|
/*
|
|
* xmlModulePlatformOpen:
|
|
* returns a handle on success, and zero on error.
|
|
*/
|
|
|
|
static void *
|
|
xmlModulePlatformOpen(const char *name)
|
|
{
|
|
return shl_load(name, BIND_IMMEDIATE, 0L);
|
|
}
|
|
|
|
/*
|
|
* xmlModulePlatformClose:
|
|
* returns 0 on success, and non-zero on error.
|
|
*/
|
|
|
|
static int
|
|
xmlModulePlatformClose(void *handle)
|
|
{
|
|
return shl_unload(handle);
|
|
}
|
|
|
|
/*
|
|
* xmlModulePlatformSymbol:
|
|
* http://docs.hp.com/en/B2355-90683/shl_load.3X.html
|
|
* returns 0 on success and the loaded symbol in result, and -1 on error.
|
|
*/
|
|
|
|
static int
|
|
xmlModulePlatformSymbol(void *handle, const char *name, void **symbol)
|
|
{
|
|
int rc;
|
|
|
|
errno = 0;
|
|
rc = shl_findsym(&handle, name, TYPE_UNDEFINED, symbol);
|
|
return rc;
|
|
}
|
|
|
|
#endif /* HAVE_SHLLOAD */
|
|
#endif /* ! HAVE_DLOPEN */
|
|
|
|
#ifdef _WIN32
|
|
|
|
#include <windows.h>
|
|
|
|
/*
|
|
* xmlModulePlatformOpen:
|
|
* returns a handle on success, and zero on error.
|
|
*/
|
|
|
|
static void *
|
|
xmlModulePlatformOpen(const char *name)
|
|
{
|
|
return LoadLibrary(name);
|
|
}
|
|
|
|
/*
|
|
* xmlModulePlatformClose:
|
|
* returns 0 on success, and non-zero on error.
|
|
*/
|
|
|
|
static int
|
|
xmlModulePlatformClose(void *handle)
|
|
{
|
|
int rc;
|
|
|
|
rc = FreeLibrary(handle);
|
|
return (0 == rc);
|
|
}
|
|
|
|
/*
|
|
* xmlModulePlatformSymbol:
|
|
* http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dllproc/base/getprocaddress.asp
|
|
* returns 0 on success and the loaded symbol in result, and -1 on error.
|
|
*/
|
|
|
|
static int
|
|
xmlModulePlatformSymbol(void *handle, const char *name, void **symbol)
|
|
{
|
|
*symbol = GetProcAddress(handle, name);
|
|
return (NULL == *symbol) ? -1 : 0;
|
|
}
|
|
|
|
#endif /* _WIN32 */
|
|
|
|
#ifdef HAVE_BEOS
|
|
|
|
#include <kernel/image.h>
|
|
|
|
/*
|
|
* xmlModulePlatformOpen:
|
|
* beos api info: http://www.beunited.org/bebook/The%20Kernel%20Kit/Images.html
|
|
* returns a handle on success, and zero on error.
|
|
*/
|
|
|
|
static void *
|
|
xmlModulePlatformOpen(const char *name)
|
|
{
|
|
return (void *) load_add_on(name);
|
|
}
|
|
|
|
/*
|
|
* xmlModulePlatformClose:
|
|
* beos api info: http://www.beunited.org/bebook/The%20Kernel%20Kit/Images.html
|
|
* returns 0 on success, and non-zero on error.
|
|
*/
|
|
|
|
static int
|
|
xmlModulePlatformClose(void *handle)
|
|
{
|
|
status_t rc;
|
|
|
|
rc = unload_add_on((image_id) handle);
|
|
|
|
if (rc == B_OK)
|
|
return 0;
|
|
else
|
|
return -1;
|
|
}
|
|
|
|
/*
|
|
* xmlModulePlatformSymbol:
|
|
* beos api info: http://www.beunited.org/bebook/The%20Kernel%20Kit/Images.html
|
|
* returns 0 on success and the loaded symbol in result, and -1 on error.
|
|
*/
|
|
|
|
static int
|
|
xmlModulePlatformSymbol(void *handle, const char *name, void **symbol)
|
|
{
|
|
status_t rc;
|
|
|
|
rc = get_image_symbol((image_id) handle, name, B_SYMBOL_TYPE_ANY, symbol);
|
|
|
|
return (rc == B_OK) ? 0 : -1;
|
|
}
|
|
|
|
#endif /* HAVE_BEOS */
|
|
|
|
#ifdef HAVE_OS2
|
|
|
|
#include <os2.h>
|
|
|
|
/*
|
|
* xmlModulePlatformOpen:
|
|
* os2 api info: http://www.edm2.com/os2api/Dos/DosLoadModule.html
|
|
* returns a handle on success, and zero on error.
|
|
*/
|
|
|
|
static void *
|
|
xmlModulePlatformOpen(const char *name)
|
|
{
|
|
char errbuf[256];
|
|
void *handle;
|
|
int rc;
|
|
|
|
rc = DosLoadModule(errbuf, sizeof(errbuf) - 1, name, &handle);
|
|
|
|
if (rc)
|
|
return 0;
|
|
else
|
|
return (handle);
|
|
}
|
|
|
|
/*
|
|
* xmlModulePlatformClose:
|
|
* os2 api info: http://www.edm2.com/os2api/Dos/DosFreeModule.html
|
|
* returns 0 on success, and non-zero on error.
|
|
*/
|
|
|
|
static int
|
|
xmlModulePlatformClose(void *handle)
|
|
{
|
|
return DosFreeModule(handle);
|
|
}
|
|
|
|
/*
|
|
* xmlModulePlatformSymbol:
|
|
* os2 api info: http://www.edm2.com/os2api/Dos/DosQueryProcAddr.html
|
|
* returns 0 on success and the loaded symbol in result, and -1 on error.
|
|
*/
|
|
|
|
static int
|
|
xmlModulePlatformSymbol(void *handle, const char *name, void **symbol)
|
|
{
|
|
int rc;
|
|
|
|
rc = DosQueryProcAddr(handle, 0, name, symbol);
|
|
|
|
return (rc == NO_ERROR) ? 0 : -1;
|
|
}
|
|
|
|
#endif /* HAVE_OS2 */
|
|
|
|
#define bottom_xmlmodule
|
|
#include "elfgcchack.h"
|
|
#endif /* LIBXML_MODULES_ENABLED */
|