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/* !---- DO NOT EDIT: This file autogenerated by com\sun\gluegen\JavaEmitter.java on Tue May 27 02:37:55 PDT 2008 ----! */
package jogamp.common.os;
import com.jogamp.common.os.DynamicLinker;
public class WindowsDynamicLinkerImpl implements DynamicLinker {
/** Interface to C language function: <br> <code> BOOL FreeLibrary(HANDLE hLibModule); </code> */
private static native int FreeLibrary(long hLibModule);
/** Interface to C language function: <br> <code> DWORD GetLastError(void); </code> */
private static native int GetLastError();
/** Interface to C language function: <br> <code> PROC GetProcAddressA(HANDLE hModule, LPCSTR lpProcName); </code> */
private static native long GetProcAddressA(long hModule, java.lang.String lpProcName);
/** Interface to C language function: <br> <code> HANDLE LoadLibraryW(LPCWSTR lpLibFileName); </code> */
private static native long LoadLibraryW(java.lang.String lpLibFileName);
// --- Begin CustomJavaCode .cfg declarations
public long openLibraryLocal(String libraryName, boolean debug) {
// How does that work under Windows ?
// Don't know .. so it's an alias for the time being
return openLibraryGlobal(libraryName, debug);
}
public long openLibraryGlobal(String libraryName, boolean debug) {
long handle = LoadLibraryW(libraryName);
if(0==handle && debug) {
int err = GetLastError();
System.err.println("LoadLibraryW \""+libraryName+"\" failed, error code: 0x"+Integer.toHexString(err)+", "+err);
}
return handle;
}
public long lookupSymbol(long libraryHandle, String symbolName) {
String _symbolName = symbolName;
long addr = GetProcAddressA(libraryHandle, _symbolName);
if(0==addr) {
// __stdcall hack: try some @nn decorations,
// the leading '_' must not be added (same with cdecl)
final int argAlignment=4; // 4 byte alignment of each argument
final int maxArguments=12; // experience ..
for(int arg=0; 0==addr && arg<=maxArguments; arg++) {
_symbolName = symbolName+"@"+(arg*argAlignment);
addr = GetProcAddressA(libraryHandle, _symbolName);
}
}
if(DEBUG_LOOKUP) {
System.err.println("WindowsDynamicLinkerImpl.lookupSymbol(0x"+Long.toHexString(libraryHandle)+", "+symbolName+") -> "+_symbolName+", 0x"+Long.toHexString(addr));
}
return addr;
}
public long lookupSymbolGlobal(String symbolName) {
if(DEBUG_LOOKUP) {
System.err.println("lookupSymbolGlobal: Not supported on Windows");
}
// allow DynamicLibraryBundle to continue w/ local libs
return 0;
}
public void closeLibrary(long libraryHandle) {
FreeLibrary(libraryHandle);
}
// ---- End CustomJavaCode .cfg declarations
} // end of class WindowsDynamicLinkerImpl
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