/* CALL_IO1(Real_conv, REF, NOIND) */
Handle Real_convc(TaskData *mdTaskData, Handle str) /* string to real */
{
double result;
int i;
char *finish;
char *string_buffer = Poly_string_to_C_alloc(DEREFHANDLE(str));
/* Scan the string turning '~' into '-' */
for(i = 0; string_buffer[i] != '\0'; i ++)
{
if (string_buffer[i] == '~') string_buffer[i] = '-';
}
/* Now convert it */
result = poly_strtod(string_buffer, &finish);
bool isError = *finish != '\0'; // Test before deallocating
free(string_buffer);
// We no longer detect overflow and underflow and instead return
// (signed) zeros for underflow and (signed) infinities for overflow.
if (isError) raise_exception_string(mdTaskData, EXC_conversion, "");
return real_result(mdTaskData, result);
}/* Real_conv */
Handle OS_spec_dispatch_c(TaskData *taskData, Handle args, Handle code)
{
unsigned c = get_C_unsigned(taskData, DEREFWORD(code));
switch (c)
{
case 0: /* Return our OS type. Not in any structure. */
return Make_arbitrary_precision(taskData, 1); /* 1 for Windows. */
/* Windows-specific functions. */
case 1000: /* execute */
return execute(taskData, args);
case 1001: /* Get input stream as text. */
return openProcessHandle(taskData, args, TRUE, TRUE);
case 1002: /* Get output stream as text. */
return openProcessHandle(taskData, args, FALSE, TRUE);
case 1003: /* Get input stream as binary. */
return openProcessHandle(taskData, args, TRUE, FALSE);
case 1004: /* Get output stream as binary. */
return openProcessHandle(taskData, args, FALSE, FALSE);
case 1005: /* Get result of process. */
{
PHANDLETAB hnd = get_handle(DEREFWORD(args), HE_PROCESS);
if (hnd == 0)
raise_syscall(taskData, "Process is closed", EINVAL);
// Close the streams. Either of them may have been
// passed to the stream package.
if (hnd->entry.process.hInput != INVALID_HANDLE_VALUE)
CloseHandle(hnd->entry.process.hInput);
hnd->entry.process.hInput = INVALID_HANDLE_VALUE;
if (hnd->entry.process.hEvent)
CloseHandle(hnd->entry.process.hEvent);
hnd->entry.process.hEvent = NULL;
if (hnd->entry.process.readToken)
{
PIOSTRUCT strm =
get_stream(hnd->entry.process.readToken);
if (strm != NULL) close_stream(strm);
}
hnd->entry.process.readToken = 0;
if (hnd->entry.process.hOutput != INVALID_HANDLE_VALUE)
CloseHandle(hnd->entry.process.hOutput);
hnd->entry.process.hOutput = INVALID_HANDLE_VALUE;
if (hnd->entry.process.writeToken)
{
PIOSTRUCT strm =
get_stream(hnd->entry.process.writeToken);
if (strm != NULL) close_stream(strm);
}
hnd->entry.process.writeToken = 0;
// See if it's finished.
while (true) {
DWORD dwResult;
if (GetExitCodeProcess(hnd->entry.process.hProcess, &dwResult) == 0)
raise_syscall(taskData, "GetExitCodeProcess failed",
-(int)GetLastError());
if (dwResult != STILL_ACTIVE) {
/* Finished - return the result. */
/* Note: we haven't closed the handle because we might want to ask
for the result again. We only close it when we've garbage-collected
the token. Doing this runs the risk of running out of handles.
Maybe change it and remember the result in ML. */
return Make_arbitrary_precision(taskData, dwResult);
}
// Block and try again.
WaitHandle waiter(hnd->entry.process.hProcess);
processes->ThreadPauseForIO(taskData, &waiter);
}
}
case 1006: /* Return a constant. */
{
unsigned i = get_C_unsigned(taskData, DEREFWORD(args));
if (i >= sizeof(winConstVec)/sizeof(winConstVec[0]))
raise_syscall(taskData, "Invalid index", 0);
return Make_arbitrary_precision(taskData, winConstVec[i]);
}
/* Registry functions. */
case 1007: // Open a key within one of the roots.
{
unsigned keyIndex = get_C_unsigned(taskData, DEREFWORDHANDLE(args)->Get(0));
// This should only ever happen as a result of a fault in
// the Windows structure.
if (keyIndex >= sizeof(hkPredefinedKeyTab)/sizeof(hkPredefinedKeyTab[0]))
raise_syscall(taskData, "Invalid index", 0);
return openRegistryKey(taskData, args, hkPredefinedKeyTab[keyIndex]);
}
case 1008: // Open a subkey of an opened key.
{
PHANDLETAB hnd =
get_handle(DEREFHANDLE(args)->Get(0), HE_REGISTRY);
if (hnd == 0)
raise_syscall(taskData, "Handle is closed", -ERROR_INVALID_HANDLE);
return openRegistryKey(taskData, args, hnd->entry.hKey);
}
case 1009: // Create a subkey within one of the roots.
{
unsigned keyIndex = get_C_unsigned(taskData, DEREFWORDHANDLE(args)->Get(0));
// This should only ever happen as a result of a fault in
// the Windows structure.
if (keyIndex >= sizeof(hkPredefinedKeyTab)/sizeof(hkPredefinedKeyTab[0]))
raise_syscall(taskData, "Invalid index", 0);
return createRegistryKey(taskData, args, hkPredefinedKeyTab[keyIndex]);
}
case 1010: // Create a subkey within an opened key.
{
PHANDLETAB hnd =
get_handle(DEREFHANDLE(args)->Get(0), HE_REGISTRY);
if (hnd == 0)
raise_syscall(taskData, "Handle is closed", -ERROR_INVALID_HANDLE);
return createRegistryKey(taskData, args, hnd->entry.hKey);
}
case 1011: // Close a registry handle.
{
PHANDLETAB hnd = get_handle(DEREFWORD(args), HE_REGISTRY);
if (hnd != 0) close_handle(hnd);
return Make_arbitrary_precision(taskData, 0);
}
case 1012: // Get a value
{
unsigned keyIndex = get_C_unsigned(taskData, DEREFWORDHANDLE(args)->Get(0));
// This should only ever happen as a result of a fault in
// the Windows structure.
if (keyIndex >= sizeof(hkPredefinedKeyTab)/sizeof(hkPredefinedKeyTab[0]))
raise_syscall(taskData, "Invalid index", 0);
return queryRegistryKey(taskData, args, hkPredefinedKeyTab[keyIndex]);
}
case 1013: // Get a value
{
PHANDLETAB hnd =
get_handle(DEREFHANDLE(args)->Get(0), HE_REGISTRY);
if (hnd == 0)
raise_syscall(taskData, "Handle is closed", -ERROR_INVALID_HANDLE);
return queryRegistryKey(taskData, args, hnd->entry.hKey);
}
case 1014: // Delete a subkey
{
unsigned keyIndex = get_C_unsigned(taskData, DEREFWORDHANDLE(args)->Get(0));
// This should only ever happen as a result of a fault in
// the Windows structure.
if (keyIndex >= sizeof(hkPredefinedKeyTab)/sizeof(hkPredefinedKeyTab[0]))
raise_syscall(taskData, "Invalid index", 0);
return deleteRegistryKey(taskData, args, hkPredefinedKeyTab[keyIndex]);
}
case 1015: // Delete a subkey
{
PHANDLETAB hnd =
get_handle(DEREFHANDLE(args)->Get(0), HE_REGISTRY);
if (hnd == 0)
raise_syscall(taskData, "Handle is closed", -ERROR_INVALID_HANDLE);
return deleteRegistryKey(taskData, args, hnd->entry.hKey);
}
case 1016: // Set a value
{
unsigned keyIndex = get_C_unsigned(taskData, DEREFWORDHANDLE(args)->Get(0));
// This should only ever happen as a result of a fault in
// the Windows structure.
if (keyIndex >= sizeof(hkPredefinedKeyTab)/sizeof(hkPredefinedKeyTab[0]))
raise_syscall(taskData, "Invalid index", 0);
return setRegistryKey(taskData, args, hkPredefinedKeyTab[keyIndex]);
}
case 1017: // Set a value
{
PHANDLETAB hnd =
get_handle(DEREFHANDLE(args)->Get(0), HE_REGISTRY);
if (hnd == 0)
raise_syscall(taskData, "Handle is closed", -ERROR_INVALID_HANDLE);
return setRegistryKey(taskData, args, hnd->entry.hKey);
}
case 1018: // Enumerate a key in the predefined keys
{
unsigned keyIndex = get_C_unsigned(taskData, DEREFWORDHANDLE(args)->Get(0));
if (keyIndex >= sizeof(hkPredefinedKeyTab)/sizeof(hkPredefinedKeyTab[0]))
raise_syscall(taskData, "Invalid index", 0);
return enumerateRegistry(taskData, args, hkPredefinedKeyTab[keyIndex], TRUE);
}
case 1019: // Enumerate a key in an opened key
{
PHANDLETAB hnd =
get_handle(DEREFHANDLE(args)->Get(0), HE_REGISTRY);
if (hnd == 0)
raise_syscall(taskData, "Handle is closed", -ERROR_INVALID_HANDLE);
return enumerateRegistry(taskData, args, hnd->entry.hKey, TRUE);
}
case 1020: // Enumerate a value in the predefined keys
{
unsigned keyIndex = get_C_unsigned(taskData, DEREFWORDHANDLE(args)->Get(0));
if (keyIndex >= sizeof(hkPredefinedKeyTab)/sizeof(hkPredefinedKeyTab[0]))
raise_syscall(taskData, "Invalid index", 0);
return enumerateRegistry(taskData, args, hkPredefinedKeyTab[keyIndex], FALSE);
}
case 1021: // Enumerate a value in an opened key
{
PHANDLETAB hnd =
get_handle(DEREFHANDLE(args)->Get(0), HE_REGISTRY);
if (hnd == 0)
raise_syscall(taskData, "Handle is closed", -ERROR_INVALID_HANDLE);
return enumerateRegistry(taskData, args, hnd->entry.hKey, FALSE);
}
case 1022: // Delete a value
{
unsigned keyIndex = get_C_unsigned(taskData, DEREFWORDHANDLE(args)->Get(0));
// This should only ever happen as a result of a fault in
// the Windows structure.
if (keyIndex >= sizeof(hkPredefinedKeyTab)/sizeof(hkPredefinedKeyTab[0]))
raise_syscall(taskData, "Invalid index", 0);
return deleteRegistryValue(taskData, args, hkPredefinedKeyTab[keyIndex]);
}
case 1023: // Delete a value
{
PHANDLETAB hnd =
get_handle(DEREFHANDLE(args)->Get(0), HE_REGISTRY);
if (hnd == 0)
raise_syscall(taskData, "Handle is closed", -ERROR_INVALID_HANDLE);
return deleteRegistryValue(taskData, args, hnd->entry.hKey);
}
case 1030: // Convert UTC time values to local time. -- No longer used??
{
FILETIME ftUTC, ftLocal;
/* Get the file time. */
getFileTimeFromArb(taskData, args, &ftUTC);
if (! FileTimeToLocalFileTime(&ftUTC, &ftLocal))
raise_syscall(taskData, "FileTimeToLocalFileTime failed",
-(int)GetLastError());
return Make_arb_from_Filetime(taskData, ftLocal);
}
case 1031: // Convert local time values to UTC. -- No longer used??
{
FILETIME ftUTC, ftLocal;
/* Get the file time. */
getFileTimeFromArb(taskData, args, &ftLocal);
if (! LocalFileTimeToFileTime(&ftLocal, &ftUTC))
raise_syscall(taskData, "LocalFileTimeToFileTime failed",
-(int)GetLastError());
return Make_arb_from_Filetime(taskData, ftUTC);
}
case 1032: // Get volume information.
{
TCHAR rootName[MAX_PATH], volName[MAX_PATH], sysName[MAX_PATH];
DWORD dwVolSerial, dwMaxComponentLen, dwFlags;
Handle volHandle, sysHandle, serialHandle, maxCompHandle;
Handle resultHandle;
POLYUNSIGNED length = Poly_string_to_C(DEREFWORD(args), rootName, MAX_PATH);
if (length > MAX_PATH)
raise_syscall(taskData, "Root name too long", ENAMETOOLONG);
if (!GetVolumeInformation(rootName, volName, MAX_PATH,
&dwVolSerial, &dwMaxComponentLen, &dwFlags,
sysName, MAX_PATH))
raise_syscall(taskData, "GetVolumeInformation failed",
-(int)GetLastError());
volHandle = SAVE(C_string_to_Poly(taskData, volName));
sysHandle = SAVE(C_string_to_Poly(taskData, sysName));
serialHandle = Make_arbitrary_precision(taskData, dwVolSerial);
maxCompHandle = Make_arbitrary_precision(taskData, dwMaxComponentLen);
resultHandle = alloc_and_save(taskData, 4);
DEREFHANDLE(resultHandle)->Set(0, DEREFWORDHANDLE(volHandle));
DEREFHANDLE(resultHandle)->Set(1, DEREFWORDHANDLE(sysHandle));
DEREFHANDLE(resultHandle)->Set(2, DEREFWORDHANDLE(serialHandle));
DEREFHANDLE(resultHandle)->Set(3, DEREFWORDHANDLE(maxCompHandle));
return resultHandle;
}
case 1033:
{
TCHAR fileName[MAX_PATH], execName[MAX_PATH];
POLYUNSIGNED length = Poly_string_to_C(DEREFWORD(args), fileName, MAX_PATH);
HINSTANCE hInst;
if (length > MAX_PATH)
raise_syscall(taskData, "File name too long", ENAMETOOLONG);
hInst = FindExecutable(fileName, NULL, execName);
if ((POLYUNSIGNED)hInst <= 32)
{
raise_syscall(taskData, "FindExecutable failed", -(int)(POLYUNSIGNED)hInst);
}
return SAVE(C_string_to_Poly(taskData, execName));
}
case 1034: // Open a document
{
SHELLEXECUTEINFO shellEx;
memset(&shellEx, 0, sizeof(shellEx));
shellEx.cbSize = sizeof(shellEx);
shellEx.lpVerb = _T("open");
shellEx.lpFile = Poly_string_to_T_alloc(DEREFWORD(args));
shellEx.hwnd = hMainWindow;
shellEx.nShow = SW_SHOWNORMAL;
BOOL fRes = ShellExecuteEx(&shellEx);
free((void*)shellEx.lpFile);
if (! fRes)
raise_syscall(taskData, "ShellExecuteEx failed", 0-GetLastError());
return Make_arbitrary_precision(taskData, 0);
}
case 1035: // Launch an application.
{
SHELLEXECUTEINFO shellEx;
memset(&shellEx, 0, sizeof(shellEx));
shellEx.cbSize = sizeof(shellEx);
shellEx.lpVerb = _T("open");
shellEx.lpFile = Poly_string_to_T_alloc(args->WordP()->Get(0));
shellEx.lpParameters = Poly_string_to_T_alloc(args->WordP()->Get(1));
shellEx.nShow = SW_SHOWNORMAL;
BOOL fRes = ShellExecuteEx(&shellEx);
free((void*)shellEx.lpFile);
free((void*)shellEx.lpParameters);
if (! fRes)
raise_syscall(taskData, "ShellExecuteEx failed", 0-GetLastError());
return Make_arbitrary_precision(taskData, 0);
}
case 1036: // Does the process have its own console?
return Make_arbitrary_precision(taskData, hMainWindow != NULL ? 1: 0);
case 1037: // Simple execute.
return simpleExecute(taskData, args);
// DDE
case 1038: // Start DDE dialogue.
{
Handle handToken;
PHANDLETAB pTab;
HCONV hcDDEConv;
TCHAR *serviceName = Poly_string_to_T_alloc(args->WordP()->Get(0));
TCHAR *topicName = Poly_string_to_T_alloc(args->WordP()->Get(1));
/* Send a request to the main thread to do the work. */
hcDDEConv = StartDDEConversation(serviceName, topicName);
free(serviceName); free(topicName);
if (hcDDEConv == 0) raise_syscall(taskData, "DdeConnect failed", 0);
// Create an entry to return the conversation.
handToken = make_handle_entry(taskData);
pTab = &handleTable[STREAMID(handToken)];
pTab->entryType = HE_DDECONVERSATION;
pTab->entry.hcDDEConv = hcDDEConv;
return handToken;
}
case 1039: // Send DDE execute request.
{
PHANDLETAB hnd =
get_handle(DEREFHANDLE(args)->Get(0), HE_DDECONVERSATION);
LRESULT res;
char *command;
if (hnd == NULL)
{
raise_syscall(taskData, "DDE Conversation is closed", 0);
}
command = Poly_string_to_C_alloc(args->WordP()->Get(1));
/* Send a request to the main thread to do the work. */
res = ExecuteDDE(command, hnd->entry.hcDDEConv);
free(command);
if (res == -1) raise_syscall(taskData, "DdeClientTransaction failed", 0);
else return Make_arbitrary_precision(taskData, res);
}
case 1040: // Close a DDE conversation.
{
PHANDLETAB hnd = get_handle(args->Word(), HE_DDECONVERSATION);
if (hnd != 0) close_handle(hnd);
return Make_arbitrary_precision(taskData, 0);
}
// Configuration functions.
case 1050: // Get version data
{
OSVERSIONINFO osver;
ZeroMemory(&osver, sizeof(OSVERSIONINFO));
osver.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
// GetVersionEx is deprecated in Windows 8.1
if (! GetVersionEx(&osver))
raise_syscall(taskData, "GetVersionEx failed", -(int)GetLastError());
Handle major = Make_arbitrary_precision(taskData, osver.dwMajorVersion);
Handle minor = Make_arbitrary_precision(taskData, osver.dwMinorVersion);
Handle build = Make_arbitrary_precision(taskData, osver.dwBuildNumber);
Handle platform = Make_arbitrary_precision(taskData, osver.dwPlatformId);
Handle version = SAVE(C_string_to_Poly(taskData, osver.szCSDVersion));
Handle resVal = alloc_and_save(taskData, 5);
DEREFHANDLE(resVal)->Set(0, DEREFWORDHANDLE(major));
DEREFHANDLE(resVal)->Set(1, DEREFWORDHANDLE(minor));
DEREFHANDLE(resVal)->Set(2, DEREFWORDHANDLE(build));
DEREFHANDLE(resVal)->Set(3, DEREFWORDHANDLE(platform));
DEREFHANDLE(resVal)->Set(4, DEREFWORDHANDLE(version));
return resVal;
}
case 1051: // Get windows directory
{
TCHAR path[MAX_PATH+1];
if (GetWindowsDirectory(path, sizeof(path)/sizeof(TCHAR)) == 0)
raise_syscall(taskData, "GetWindowsDirectory failed", -(int)GetLastError());
return SAVE(C_string_to_Poly(taskData, path));
}
case 1052: // Get system directory
{
TCHAR path[MAX_PATH+1];
if (GetSystemDirectory(path, sizeof(path)/sizeof(TCHAR)) == 0)
raise_syscall(taskData, "GetSystemDirectory failed", -(int)GetLastError());
return SAVE(C_string_to_Poly(taskData, path));
}
case 1053: // Get computer name
{
TCHAR name[MAX_COMPUTERNAME_LENGTH +1];
DWORD dwSize = MAX_COMPUTERNAME_LENGTH +1;
if (GetComputerName(name, &dwSize) == 0)
raise_syscall(taskData, "GetComputerName failed", -(int)GetLastError());
return SAVE(C_string_to_Poly(taskData, name));
}
case 1054: // Get user name
{
TCHAR name[UNLEN +1];
DWORD dwSize = UNLEN +1;
if (GetUserName(name, &dwSize) == 0)
raise_syscall(taskData, "GetUserName failed", -(int)GetLastError());
return SAVE(C_string_to_Poly(taskData, name));
}
case 1100: // Get the error result from the last call.
// This is saved when we make a call to a foreign function.
{
return(SAVE(TAGGED(taskData->lastError)));
}
case 1101: // Wait for a message.
{
HWND hwnd = *(HWND*)(DEREFWORDHANDLE(args)->Get(0).AsCodePtr());
UINT wMsgFilterMin = get_C_unsigned(taskData, DEREFWORDHANDLE(args)->Get(1));
UINT wMsgFilterMax = get_C_unsigned(taskData, DEREFWORDHANDLE(args)->Get(2));
while (1)
{
MSG msg;
processes->ThreadReleaseMLMemory(taskData);
// N.B. PeekMessage may directly call the window proc resulting in a
// callback to ML. For this to work a callback must not overwrite "args".
BOOL result = PeekMessage(&msg, hwnd, wMsgFilterMin, wMsgFilterMax, PM_NOREMOVE);
processes->ThreadUseMLMemory(taskData);
if (result) return Make_arbitrary_precision(taskData, 0);
// Pause until a message arrives.
processes->ThreadPause(taskData);
}
}
// case 1102: // Return the address of the window callback function.
case 1103: // Return the application instance.
{
Handle result = alloc_and_save(taskData, 1, F_BYTE_OBJ);
*(HINSTANCE*)(result->Word().AsCodePtr()) = hApplicationInstance;
return result;
}
case 1104: // Return the main window handle
{
Handle result = alloc_and_save(taskData, 1, F_BYTE_OBJ);
*(HWND*)(result->Word().AsCodePtr()) = hMainWindow;
return result;
}
// case 1105: // Set the callback function
default:
{
char msg[100];
sprintf(msg, "Unknown windows-specific function: %d", c);
raise_exception_string(taskData, EXC_Fail, msg);
return 0;
}
}
}
/*
The Windows version of this is more complicated than the Unix version because
we can't manipulate the pipe handles in the child process. Everything has to be
set up in the parent. As with Unix we create two pipes and pass one end of each
pipe to the child. The end we pass to the child is "inheritable" (i.e. duplicated
in the child as with Unix file descriptors) while the ends we keep in the parent
are non-inheritable (i.e. not duplicated in the child).
DCJM: December 1999.
This is now further complicated to improve the performance. In Unix we can pass
the file ID to "select" which will return immediately when input is available (we
ignore blocking on output at the moment). That allows the ML process to respond
immediately. There's no easy way to do that in Windows since the pipe handle is
signalled whether there is input available or not. One possibility would be to
use overlapped IO but that requires using the ReadFile call directly and some
contortions to create a pipe with overlapped IO. The other, taken here, is to
interpose a thread which can signal an event when input is available.
*/
static Handle execute(TaskData *taskData, Handle args)
{
char *commandName = 0, *arguments = 0;
LPCSTR lpszError = "";
HANDLE hWriteToChild = INVALID_HANDLE_VALUE,
hReadFromParent = INVALID_HANDLE_VALUE,
hWriteToParent = INVALID_HANDLE_VALUE,
hReadFromChild = INVALID_HANDLE_VALUE;
HANDLE hEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
HANDLE hTemp;
STARTUPINFO startupInfo;
PROCESS_INFORMATION processInfo;
Handle handToken = make_handle_entry(taskData);
PHANDLETAB pTab = &handleTable[STREAMID(handToken)];
commandName = Poly_string_to_C_alloc(args->WordP()->Get(0));
arguments = Poly_string_to_C_alloc(args->WordP()->Get(1));
// Create pipes for connection. Setting the security argument to NULL creates
// the pipe handles as non-inheritable. We have to make sure that the
// child process does not inherit handles for the parent end of the
// connection otherwise the pipe will remain open after the parent has
// closed its end, causing the child process to sit around even after
// the parent process has gone away.
if (!CreatePipe(&hReadFromParent, &hWriteToChild, NULL, 0)) {
lpszError = "Could not create pipe";
goto error;
}
if (!CreatePipe(&hReadFromChild, &hWriteToParent, NULL, 0)) {
lpszError = "Could not create pipe";
goto error;
}
// Create the copying thread.
hTemp = CreateCopyPipe(hReadFromChild, hEvent);
if (hTemp == NULL) {
lpszError = "Could not create pipe";
goto error;
}
hReadFromChild = hTemp;
// Convert the handles we want to pass to the child into inheritable
// handles by duplicating and replacing them with the duplicates.
if (! DuplicateHandle(GetCurrentProcess(), hWriteToParent, GetCurrentProcess(),
&hTemp, 0, TRUE, // inheritable
DUPLICATE_SAME_ACCESS )) {
lpszError = "Could not create pipe";
goto error;
}
CloseHandle(hWriteToParent);
hWriteToParent = hTemp;
if (! DuplicateHandle(GetCurrentProcess(), hReadFromParent, GetCurrentProcess(),
&hTemp, 0, TRUE, // inheritable
DUPLICATE_SAME_ACCESS )) {
lpszError = "Could not create pipe";
goto error;
}
CloseHandle(hReadFromParent);
hReadFromParent = hTemp;
// Create a STARTUPINFO structure in which to pass the pipes as stdin
// and stdout to the new process.
memset(&startupInfo, 0, sizeof(startupInfo));
startupInfo.cb = sizeof(startupInfo);
startupInfo.dwFlags = STARTF_USESTDHANDLES;
startupInfo.hStdInput = hReadFromParent;
startupInfo.hStdOutput = hWriteToParent;
// What should we do about the stderr? For the moment, inherit the original.
startupInfo.hStdError = GetStdHandle(STD_ERROR_HANDLE);
// Try starting the process first using the given name.
if (!CreateProcess(commandName,
arguments, // Command line
NULL, NULL, TRUE, // Security attributes. Inherit handles
CREATE_NO_WINDOW, // creation flags
NULL, NULL, // Inherit our environment and directory
&startupInfo,
&processInfo)) {
lpszError = "Could not create process";
goto error;
}
free(commandName);
free(arguments);
/* Close thread handle since we don't need it. */
CloseHandle(processInfo.hThread);
/* Close the sides of the pipes we don't use in the parent. */
CloseHandle(hReadFromParent);
CloseHandle(hWriteToParent);
pTab->entryType = HE_PROCESS;
pTab->entry.process.hProcess = processInfo.hProcess;
pTab->entry.process.hInput = hReadFromChild;
pTab->entry.process.hOutput = hWriteToChild;
pTab->entry.process.hEvent = hEvent;
pTab->entry.process.readToken = 0;
pTab->entry.process.writeToken = 0;
return(handToken);
error:
{
int err = GetLastError();
free(commandName);
free(arguments);
// Close all the pipe handles.
if (hWriteToChild != INVALID_HANDLE_VALUE) CloseHandle(hWriteToChild);
if (hReadFromParent != INVALID_HANDLE_VALUE) CloseHandle(hReadFromParent);
if (hWriteToParent != INVALID_HANDLE_VALUE) CloseHandle(hWriteToParent);
if (hReadFromChild != INVALID_HANDLE_VALUE) CloseHandle(hReadFromChild);
if (hEvent) CloseHandle(hEvent);
raise_syscall(taskData, lpszError, -err);
return NULL; // Never reached.
}
}
Handle timing_dispatch_c(TaskData *taskData, Handle args, Handle code)
{
unsigned c = get_C_unsigned(taskData, DEREFWORDHANDLE(code));
switch (c)
{
case 0: /* Get ticks per microsecond. */
return Make_arbitrary_precision(taskData, TICKS_PER_MICROSECOND);
case 1: /* Return time since the time base. */
{
#if (defined(_WIN32) && ! defined(__CYGWIN__))
FILETIME ft;
GetSystemTimeAsFileTime(&ft);
return Make_arb_from_Filetime(taskData, ft);
#else
struct timeval tv;
if (gettimeofday(&tv, NULL) != 0)
raise_syscall(taskData, "gettimeofday failed", errno);
return Make_arb_from_pair_scaled(taskData, tv.tv_sec, tv.tv_usec, 1000000);
#endif
}
case 2: /* Return the base year. This is the year which corresponds to
zero in the timing sequence. */
#if (defined(_WIN32) && ! defined(__CYGWIN__))
return Make_arbitrary_precision(taskData, 1601);
#else
return Make_arbitrary_precision(taskData, 1970);
#endif
case 3: /* In both Windows and Unix the time base is 1st of January
in the base year. This function is provided just in case
we are running on a system with a different base. It
returns the number of seconds after 1st January of the
base year that corresponds to zero of the time base. */
return Make_arbitrary_precision(taskData, 0);
case 4: /* Return the time offset which applied/will apply at the
specified time (in seconds). */
{
int localoff = 0;
time_t theTime;
int day = 0;
#if (defined(HAVE_GMTIME_R) || defined(HAVE_LOCALTIME_R))
struct tm result;
#endif
#if (defined(_WIN32) && ! defined(__CYGWIN__))
/* Although the offset is in seconds it is since 1601. */
FILETIME ftSeconds; // Not really a file-time because it's a number of seconds.
getFileTimeFromArb(taskData, args, &ftSeconds); /* May raise exception. */
ULARGE_INTEGER liTime;
liTime.HighPart = ftSeconds.dwHighDateTime;
liTime.LowPart = ftSeconds.dwLowDateTime;
theTime = (long)(liTime.QuadPart - SECSSINCE1601);
#else
theTime = get_C_long(taskData, DEREFWORDHANDLE(args)); /* May raise exception. */
#endif
{
#ifdef HAVE_GMTIME_R
struct tm *loctime = gmtime_r(&theTime, &result);
#else
PLocker lock(&timeLock);
struct tm *loctime = gmtime(&theTime);
#endif
if (loctime == NULL) raise_exception0(taskData, EXC_size);
localoff = (loctime->tm_hour*60 + loctime->tm_min)*60 + loctime->tm_sec;
day = loctime->tm_yday;
}
{
#ifdef HAVE_LOCALTIME_R
struct tm *loctime = localtime_r(&theTime, &result);
#else
PLocker lock(&timeLock);
struct tm *loctime = localtime(&theTime);
#endif
if (loctime == NULL) raise_exception0(taskData, EXC_size);
localoff -= (loctime->tm_hour*60 + loctime->tm_min)*60 + loctime->tm_sec;
if (loctime->tm_yday != day)
{
// Different day - have to correct it. We can assume that there
// is at most one day to correct.
if (day == loctime->tm_yday+1 || (day == 0 && loctime->tm_yday >= 364))
localoff += 24*60*60;
else localoff -= 24*60*60;
}
}
return Make_arbitrary_precision(taskData, localoff);
}
case 5: /* Find out if Summer Time (daylight saving) was/will be in effect. */
{
time_t theTime;
#if (defined(_WIN32) && ! defined(__CYGWIN__))
FILETIME ftSeconds; // Not really a file-time because it's a number of seconds.
getFileTimeFromArb(taskData, args, &ftSeconds); /* May raise exception. */
ULARGE_INTEGER liTime;
liTime.HighPart = ftSeconds.dwHighDateTime;
liTime.LowPart = ftSeconds.dwLowDateTime;
theTime = (long)(liTime.QuadPart - SECSSINCE1601);
#else
theTime = get_C_long(taskData, DEREFWORDHANDLE(args)); /* May raise exception. */
#endif
int isDst = 0;
#ifdef HAVE_LOCALTIME_R
struct tm result;
struct tm *loctime = localtime_r(&theTime, &result);
isDst = loctime->tm_isdst;
#else
{
PLocker lock(&timeLock);
struct tm *loctime = localtime(&theTime);
if (loctime == NULL) raise_exception0(taskData, EXC_size);
isDst = loctime->tm_isdst;
}
#endif
return Make_arbitrary_precision(taskData, isDst);
}
case 6: /* Call strftime. It would be possible to do much of this in
ML except that it requires the current locale. */
{
struct tm time;
char *format, buff[2048];
Handle resString;
/* Get the format string. */
format = Poly_string_to_C_alloc(DEREFHANDLE(args)->Get(0));
/* Copy the time information. */
time.tm_year = get_C_int(taskData, DEREFHANDLE(args)->Get(1)) - 1900;
time.tm_mon = get_C_int(taskData, DEREFHANDLE(args)->Get(2));
time.tm_mday = get_C_int(taskData, DEREFHANDLE(args)->Get(3));
time.tm_hour = get_C_int(taskData, DEREFHANDLE(args)->Get(4));
time.tm_min = get_C_int(taskData, DEREFHANDLE(args)->Get(5));
time.tm_sec = get_C_int(taskData, DEREFHANDLE(args)->Get(6));
time.tm_wday = get_C_int(taskData, DEREFHANDLE(args)->Get(7));
time.tm_yday = get_C_int(taskData, DEREFHANDLE(args)->Get(8));
time.tm_isdst = get_C_int(taskData, DEREFHANDLE(args)->Get(9));
#if (defined(_WIN32) && ! defined(__CYGWIN__))
_tzset(); /* Make sure we set the current locale. */
#else
setlocale(LC_TIME, "");
#endif
/* It would be better to dynamically allocate the string rather
than use a fixed size but Unix unlike Windows does not distinguish
between an error in the input and the buffer being too small. */
if (strftime(buff, sizeof(buff), format, &time) <= 0)
{
/* Error */
free(format);
raise_exception0(taskData, EXC_size);
}
resString = taskData->saveVec.push(C_string_to_Poly(taskData, buff));
free(format);
return resString;
}
case 7: /* Return User CPU time since the start. */
{
#if (defined(_WIN32) && ! defined(__CYGWIN__))
FILETIME ut, ct, et, kt;
if (! GetProcessTimes(GetCurrentProcess(), &ct, &et, &kt, &ut))
raise_syscall(taskData, "GetProcessTimes failed", 0-GetLastError());
return Make_arb_from_Filetime(taskData, ut);
#else
struct rusage rusage;
if (getrusage(RUSAGE_SELF, &rusage) != 0)
raise_syscall(taskData, "getrusage failed", errno);
return Make_arb_from_pair_scaled(taskData, rusage.ru_utime.tv_sec,
rusage.ru_utime.tv_usec, 1000000);
#endif
}
case 8: /* Return System CPU time since the start. */
{
#if (defined(_WIN32) && ! defined(__CYGWIN__))
FILETIME ct, et, kt, ut;
if (! GetProcessTimes(GetCurrentProcess(), &ct, &et, &kt, &ut))
raise_syscall(taskData, "GetProcessTimes failed", 0-GetLastError());
return Make_arb_from_Filetime(taskData, kt);
#else
struct rusage rusage;
if (getrusage(RUSAGE_SELF, &rusage) != 0)
raise_syscall(taskData, "getrusage failed", errno);
return Make_arb_from_pair_scaled(taskData, rusage.ru_stime.tv_sec,
rusage.ru_stime.tv_usec, 1000000);
#endif
}
case 9: /* Return GC time since the start. */
return gHeapSizeParameters.getGCUtime(taskData);
case 10: /* Return real time since the start. */
{
#if (defined(_WIN32) && ! defined(__CYGWIN__))
FILETIME ft;
GetSystemTimeAsFileTime(&ft);
subFiletimes(&ft, &startTime);
return Make_arb_from_Filetime(taskData, ft);
#else
struct timeval tv;
if (gettimeofday(&tv, NULL) != 0)
raise_syscall(taskData, "gettimeofday failed", errno);
subTimevals(&tv, &startTime);
return Make_arb_from_pair_scaled(taskData, tv.tv_sec, tv.tv_usec, 1000000);
#endif
}
/* These next two are used only in the Posix structure. */
case 11: /* Return User CPU time used by child processes. */
{
#if (defined(_WIN32) && ! defined(__CYGWIN__))
return Make_arbitrary_precision(taskData, 0);
#else
struct rusage rusage;
if (getrusage(RUSAGE_CHILDREN, &rusage) != 0)
raise_syscall(taskData, "getrusage failed", errno);
return Make_arb_from_pair_scaled(taskData, rusage.ru_utime.tv_sec,
rusage.ru_utime.tv_usec, 1000000);
#endif
}
case 12: /* Return System CPU time used by child processes. */
{
#if (defined(_WIN32) && ! defined(__CYGWIN__))
return Make_arbitrary_precision(taskData, 0);
#else
struct rusage rusage;
if (getrusage(RUSAGE_CHILDREN, &rusage) != 0)
raise_syscall(taskData, "getrusage failed", errno);
return Make_arb_from_pair_scaled(taskData, rusage.ru_stime.tv_sec,
rusage.ru_stime.tv_usec, 1000000);
#endif
}
case 13: /* Return GC system time since the start. */
return gHeapSizeParameters.getGCStime(taskData);
default:
{
char msg[100];
sprintf(msg, "Unknown timing function: %d", c);
raise_exception_string(taskData, EXC_Fail, msg);
return 0;
}
}
}
