// win32.cc - Helper functions for Microsoft-flavored OSs.
-/* Copyright (C) 2002 Free Software Foundation
+/* Copyright (C) 2002, 2003, 2006 Free Software Foundation
This file is part of libgcj.
details. */
#include <config.h>
-#include <windows.h>
+#include <platform.h>
+#include <sys/timeb.h>
+#include <stdlib.h>
+#include <string.h>
+#include <fcntl.h>
-LONG CALLBACK
+#include <java-stack.h>
+
+#include <java/lang/ArithmeticException.h>
+#include <java/lang/UnsupportedOperationException.h>
+#include <java/io/IOException.h>
+#include <java/net/SocketException.h>
+#include <java/util/Properties.h>
+
+static LONG CALLBACK
win32_exception_handler (LPEXCEPTION_POINTERS e)
{
if (e->ExceptionRecord->ExceptionCode == EXCEPTION_ACCESS_VIOLATION)
else
return EXCEPTION_CONTINUE_SEARCH;
}
+
+// Platform-specific executable name
+static char exec_name[MAX_PATH];
+ // initialized in _Jv_platform_initialize()
+
+const char *_Jv_ThisExecutable (void)
+{
+ return exec_name;
+}
+
+// Helper classes and methods implementation
+
+#ifdef MINGW_LIBGCJ_UNICODE
+
+// We're using the OS W (UNICODE) API, which means that we're speaking
+// the same language....
+jstring
+_Jv_Win32NewString (LPCTSTR pcsz)
+{
+ return JvNewString ((jchar*) pcsz, _tcslen (pcsz));
+}
+
+#else
+
+// We're using the OS A functions, which means we need to translate between
+// UNICODE and the native character set.
+
+// First, let's set up some helper translation functions....
+
+// Converts the native string to any specified jstring, returning the
+// length of the jstring. If the specified jstring is null, we simply
+// compute and return the length.
+static int nativeToUnicode(LPCSTR pcsz, jstring jstr = 0)
+{
+ jchar* buf = 0;
+ int len = 0;
+ if (jstr)
+ {
+ len = jstr->length();
+ buf = JvGetStringChars(jstr);
+ }
+ return ::MultiByteToWideChar(GetACP(), 0, pcsz,
+ strlen(pcsz), (LPWSTR) buf, len);
+}
+
+// Does the inverse of nativeToUnicode, with the same calling semantics.
+static int unicodeToNative(jstring jstr, LPSTR buf, int buflen)
+{
+ return ::WideCharToMultiByte(GetACP(), 0, (LPWSTR) JvGetStringChars(jstr),
+ jstr->length(), buf, buflen, NULL, NULL);
+}
+
+// Convenience function when the caller only wants to compute the length
+// of the native string.
+static int unicodeToNative(jstring jstr)
+{
+ return unicodeToNative(jstr, 0, 0);
+}
+
+jstring
+_Jv_Win32NewString (LPCTSTR pcsz)
+{
+ // Compute the length, allocate the jstring, then perform the conversion.
+ int len = nativeToUnicode(pcsz);
+ jstring jstr = JvAllocString(len);
+ nativeToUnicode(pcsz, jstr);
+ return jstr;
+}
+
+#endif // MINGW_LIBGCJ_UNICODE
+
+// class _Jv_Win32TempString
+_Jv_Win32TempString::_Jv_Win32TempString(jstring jstr):
+ buf_(0)
+{
+ if (jstr == 0)
+ return;
+
+ // We need space for the string length plus a null terminator.
+ // Determine whether to use our stack-allocated buffer or a heap-
+ // allocated one.
+#ifdef MINGW_LIBGCJ_UNICODE
+ // A UNICODE character is a UNICODE character is a UNICODE character....
+ int len = jstr->length();
+#else
+ // Compute the length of the native character string.
+ int len = unicodeToNative(jstr);
+#endif // MINGW_LIBGCJ_UNICODE
+
+ int bytesNeeded = (len + 1) * sizeof(TCHAR);
+ if (bytesNeeded <= (int) sizeof(stackbuf_))
+ buf_ = stackbuf_;
+ else
+ buf_ = (LPTSTR) _Jv_Malloc(bytesNeeded);
+
+#ifdef MINGW_LIBGCJ_UNICODE
+ // Copy the UNICODE characters to our buffer.
+ _tcsncpy(buf_, (LPCTSTR) JvGetStringChars (jstr), len);
+#else
+ // Convert the UNICODE string to a native one.
+ unicodeToNative(jstr, buf_, len);
+#endif // MINGW_LIBGCJ_UNICODE
+
+ buf_[len] = 0;
+}
+
+_Jv_Win32TempString::~_Jv_Win32TempString()
+{
+ if (buf_ && buf_ != stackbuf_)
+ _Jv_Free (buf_);
+}
+
+// class WSAEventWrapper
+WSAEventWrapper::WSAEventWrapper ():
+ m_hEvent(0),
+ m_fd(0),
+ m_dwSelFlags(0)
+{}
+
+WSAEventWrapper::WSAEventWrapper (int fd, DWORD dwSelFlags):
+ m_hEvent(0),
+ m_fd(0),
+ m_dwSelFlags(0)
+{
+ init(fd, dwSelFlags);
+}
+
+void WSAEventWrapper::init(int fd, DWORD dwSelFlags)
+{
+ m_fd = fd;
+ m_dwSelFlags = dwSelFlags;
+ m_hEvent = WSACreateEvent ();
+ if (dwSelFlags)
+ WSAEventSelect(fd, m_hEvent, dwSelFlags);
+}
+
+WSAEventWrapper::~WSAEventWrapper ()
+{
+ if (m_dwSelFlags)
+ {
+ WSAEventSelect(m_fd, m_hEvent, 0);
+ if (m_dwSelFlags & (FD_ACCEPT | FD_CONNECT))
+ {
+ // Set the socket back to non-blocking mode.
+ // Ignore any error since we're in a destructor.
+ unsigned long lSockOpt = 0L;
+ // blocking mode
+ ::ioctlsocket (m_fd, FIONBIO, &lSockOpt);
+ }
+ }
+ WSACloseEvent (m_hEvent);
+}
+
+// Error string text.
+jstring
+_Jv_WinStrError (LPCTSTR lpszPrologue, int nErrorCode)
+{
+ LPTSTR lpMsgBuf = 0;
+
+ DWORD dwFlags = FORMAT_MESSAGE_ALLOCATE_BUFFER |
+ FORMAT_MESSAGE_FROM_SYSTEM |
+ FORMAT_MESSAGE_IGNORE_INSERTS;
+
+ FormatMessage (dwFlags,
+ NULL,
+ (DWORD) nErrorCode,
+ MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
+ (LPTSTR) &lpMsgBuf,
+ 0,
+ NULL);
+
+ jstring ret;
+ if (lpszPrologue)
+ {
+ LPTSTR lpszTemp =
+ (LPTSTR) _Jv_Malloc ((_tcslen (lpszPrologue) +
+ _tcslen (lpMsgBuf) + 3) * sizeof(TCHAR) );
+ _tcscpy (lpszTemp, lpszPrologue);
+ _tcscat (lpszTemp, _T(": "));
+ _tcscat (lpszTemp, lpMsgBuf);
+ ret = _Jv_Win32NewString (lpszTemp);
+ _Jv_Free (lpszTemp);
+ }
+ else
+ {
+ ret = _Jv_Win32NewString (lpMsgBuf);
+ }
+
+ LocalFree(lpMsgBuf);
+ return ret;
+}
+
+jstring
+_Jv_WinStrError (int nErrorCode)
+{
+ return _Jv_WinStrError (0, nErrorCode);
+}
+
+void _Jv_ThrowIOException (DWORD dwErrorCode)
+{
+ throw new java::io::IOException (_Jv_WinStrError (dwErrorCode));
+}
+
+void _Jv_ThrowIOException()
+{
+ DWORD dwErrorCode = WSAGetLastError ();
+ _Jv_ThrowIOException (dwErrorCode);
+}
+
+void _Jv_ThrowSocketException (DWORD dwErrorCode)
+{
+ throw new java::net::SocketException (_Jv_WinStrError (dwErrorCode));
+}
+
+void _Jv_ThrowSocketException()
+{
+ DWORD dwErrorCode = WSAGetLastError ();
+ _Jv_ThrowSocketException (dwErrorCode);
+}
+
+// Platform-specific VM initialization.
+void
+_Jv_platform_initialize (void)
+{
+ // Initialise winsock for networking
+ WSADATA data;
+ if (WSAStartup (MAKEWORD (2, 2), &data))
+ MessageBox (NULL, _T("Error initialising winsock library."), _T("Error"),
+ MB_OK | MB_ICONEXCLAMATION);
+
+ // Install exception handler
+ SetUnhandledExceptionFilter (win32_exception_handler);
+
+ // Initialize our executable name.
+ // FIXME: We unconditionally use the ANSI function because
+ // _Jv_ThisExecutable returns a const char*. We should really
+ // change _Jv_ThisExecutable to return a jstring.
+ GetModuleFileNameA(NULL, exec_name, sizeof(exec_name));
+}
+
+// gettimeofday implementation.
+jlong
+_Jv_platform_gettimeofday ()
+{
+ struct timeb t;
+ ftime (&t);
+ return t.time * 1000LL + t.millitm;
+}
+
+jlong
+_Jv_platform_nanotime ()
+{
+ return _Jv_platform_gettimeofday () * 1000LL;
+}
+
+static bool dirExists (LPCTSTR dir)
+{
+ DWORD dwAttrs = ::GetFileAttributes (dir);
+ return dwAttrs != 0xFFFFFFFF &&
+ (dwAttrs & FILE_ATTRIBUTE_DIRECTORY) != 0;
+}
+
+static void getUserHome(LPTSTR userHome, LPCTSTR userId)
+{
+ LPTSTR uh = _tgetenv (_T("USERPROFILE"));
+ if (uh)
+ {
+ _tcscpy(userHome, uh);
+ }
+ else
+ {
+ // Make a half-hearted attempt to support this
+ // legacy version of Windows. Try %WINDIR%\Profiles\%USERNAME%
+ // and failing this, use %WINDIR%.
+ //
+ // See:http://java.sun.com/docs/books/tutorial/security1.2/summary/files.html#UserPolicy
+ //
+ // To do this correctly, we'd have to factor in the
+ // Windows version, but if we did that, then this attempt
+ // wouldn't be half-hearted.
+ TCHAR userHomePath[MAX_PATH], winHome[MAX_PATH];
+ ::GetWindowsDirectory(winHome, MAX_PATH);
+ // assume this call always succeeds
+
+ _stprintf(userHomePath, _T("%s\\Profiles\\%s"), winHome, userId);
+ if (dirExists (userHomePath))
+ _tcscpy(userHome, userHomePath);
+ else
+ _tcscpy(userHome, winHome);
+ }
+}
+
+// Set platform-specific System properties.
+void
+_Jv_platform_initProperties (java::util::Properties* newprops)
+{
+ // A convenience define.
+#define SET(Prop,Val) \
+ newprops->put(JvNewStringLatin1 (Prop), _Jv_Win32NewString (Val))
+
+ SET ("file.separator", _T("\\"));
+ SET ("path.separator", _T(";"));
+ SET ("line.separator", _T("\r\n"));
+
+ // Use GetCurrentDirectory to set 'user.dir'.
+ DWORD buflen = MAX_PATH;
+ TCHAR buffer[buflen];
+ if (buffer != NULL)
+ {
+ if (GetCurrentDirectory (buflen, buffer))
+ SET ("user.dir", buffer);
+
+ if (GetTempPath (buflen, buffer))
+ SET ("java.io.tmpdir", buffer);
+ }
+
+ // Use GetUserName to set 'user.name'.
+ buflen = 257; // UNLEN + 1
+ TCHAR userName[buflen];
+ if (GetUserName (userName, &buflen))
+ SET ("user.name", userName);
+
+ // Set user.home
+ TCHAR userHome[MAX_PATH];
+ getUserHome(userHome, userName);
+ SET ("user.home", userHome);
+
+ // Get and set some OS info.
+ OSVERSIONINFO osvi;
+ ZeroMemory (&osvi, sizeof(OSVERSIONINFO));
+ osvi.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
+ if (GetVersionEx (&osvi))
+ {
+ if (buffer != NULL)
+ {
+ _stprintf (buffer, _T("%d.%d"), (int) osvi.dwMajorVersion,
+ (int) osvi.dwMinorVersion);
+ SET ("os.version", buffer);
+ }
+
+ switch (osvi.dwPlatformId)
+ {
+ case VER_PLATFORM_WIN32_WINDOWS:
+ if (osvi.dwMajorVersion == 4 && osvi.dwMinorVersion == 0)
+ SET ("os.name", _T("Windows 95"));
+ else if (osvi.dwMajorVersion == 4 && osvi.dwMinorVersion == 10)
+ SET ("os.name", _T("Windows 98"));
+ else if (osvi.dwMajorVersion == 4 && osvi.dwMinorVersion == 90)
+ SET ("os.name", _T("Windows Me"));
+ else
+ SET ("os.name", _T("Windows ??"));
+ break;
+
+ case VER_PLATFORM_WIN32_NT:
+ if (osvi.dwMajorVersion <= 4 )
+ SET ("os.name", _T("Windows NT"));
+ else if (osvi.dwMajorVersion == 5 && osvi.dwMinorVersion == 0)
+ SET ("os.name", _T("Windows 2000"));
+ else if (osvi.dwMajorVersion == 5 && osvi.dwMinorVersion == 1)
+ SET ("os.name", _T("Windows XP"));
+ else
+ SET ("os.name", _T("Windows NT ??"));
+ break;
+
+ default:
+ SET ("os.name", _T("Windows UNKNOWN"));
+ break;
+ }
+ }
+
+ // Set the OS architecture.
+ SYSTEM_INFO si;
+ GetSystemInfo (&si);
+ switch (si.wProcessorArchitecture)
+ {
+ case PROCESSOR_ARCHITECTURE_INTEL:
+ SET ("os.arch", _T("x86"));
+ break;
+ case PROCESSOR_ARCHITECTURE_MIPS:
+ SET ("os.arch", _T("mips"));
+ break;
+ case PROCESSOR_ARCHITECTURE_ALPHA:
+ SET ("os.arch", _T("alpha"));
+ break;
+ case PROCESSOR_ARCHITECTURE_PPC:
+ SET ("os.arch", _T("ppc"));
+ break;
+ case PROCESSOR_ARCHITECTURE_IA64:
+ SET ("os.arch", _T("ia64"));
+ break;
+ case PROCESSOR_ARCHITECTURE_UNKNOWN:
+ default:
+ SET ("os.arch", _T("unknown"));
+ break;
+ }
+}
+
+int
+_Jv_pipe (int filedes[2])
+{
+ return _pipe (filedes, 4096, _O_BINARY);
+}
+
+void
+_Jv_platform_close_on_exec (HANDLE h)
+{
+ // Mark the handle as non-inheritable. This has
+ // no effect under Win9X.
+ SetHandleInformation (h, HANDLE_FLAG_INHERIT, 0);
+}
+
+// Given an address, find the object that defines it and the nearest
+// defined symbol to that address. Returns 0 if no object defines this
+// address.
+int
+_Jv_platform_dladdr (void *addr, _Jv_AddrInfo *info)
+{
+ // Since we do not have dladdr() on Windows, we use a trick involving
+ // VirtualQuery() to find the module (EXE or DLL) that contains a given
+ // address. This was taken from Matt Pietrek's "Under the Hood" column
+ // for the April 1997 issue of Microsoft Systems Journal.
+
+ MEMORY_BASIC_INFORMATION mbi;
+ if (!VirtualQuery (addr, &mbi, sizeof (mbi)))
+ {
+ return 0;
+ }
+
+ HMODULE hMod = (HMODULE) mbi.AllocationBase;
+
+ char moduleName[MAX_PATH];
+
+ // FIXME: We explicitly use the ANSI variant of the function here.
+ if (!GetModuleFileNameA (hMod, moduleName, sizeof (moduleName)))
+ {
+ return 0;
+ }
+
+ char *file_name = (char *)(malloc (strlen (moduleName) + 1));
+ strcpy (file_name, moduleName);
+ info->file_name = file_name;
+
+ // FIXME.
+ info->base = NULL;
+ info->sym_name = NULL;
+ info->sym_addr = NULL;
+
+ return 1;
+}
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