85 lines
2.8 KiB
C
85 lines
2.8 KiB
C
/***********************************************************************/
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/* */
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/* Objective Caml */
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/* */
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/* Xavier Leroy and Pascal Cuoq, projet Cristal, INRIA Rocquencourt */
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/* */
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/* Copyright 1996 Institut National de Recherche en Informatique et */
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/* en Automatique. All rights reserved. This file is distributed */
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/* under the terms of the GNU Library General Public License. */
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/* */
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/***********************************************************************/
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/* $Id$ */
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#include <windows.h>
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#include <mlvalues.h>
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#include "unixsupport.h"
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/* From the Caml runtime */
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extern char * searchpath(char * name);
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static int win_has_console(void);
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value win_create_process_native(value cmd, value cmdline, value env,
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value fd1, value fd2, value fd3)
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{
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PROCESS_INFORMATION pi;
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STARTUPINFO si;
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char * exefile, * envp;
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int flags;
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exefile = searchpath(String_val(cmd));
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if (exefile == NULL) exefile = String_val(cmd);
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if (env != Val_int(0)) {
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envp = String_val(Field(env, 0));
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} else {
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envp = NULL;
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}
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/* Prepare stdin/stdout/stderr redirection */
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GetStartupInfo(&si);
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si.dwFlags |= STARTF_USESTDHANDLES;
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si.hStdInput = Handle_val(fd1);
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si.hStdOutput = Handle_val(fd2);
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si.hStdError = Handle_val(fd3);
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/* If we do not have a console window, then we must run
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console mode applications as detached processes.
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Otherwise, a new console is created and the redirections
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are ignored. If we're running a GUI application, the
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detached / non-detached flag doesn't matter. */
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if (win_has_console())
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flags = 0;
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else
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flags = DETACHED_PROCESS;
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/* Create the process */
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if (! CreateProcess(exefile, String_val(cmdline), NULL, NULL,
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TRUE, flags, envp, NULL, &si, &pi)) {
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_dosmaperr(GetLastError());
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uerror("create_process", cmd);
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}
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CloseHandle(pi.hThread);
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/* Return the process handle as pseudo-PID
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(this is consistent with the wait() emulation in the MSVC C library */
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return Val_int(pi.hProcess);
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}
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value win_create_process(value * argv, int argn) /* ML */
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{
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return win_create_process_native(argv[0], argv[1], argv[2],
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argv[3], argv[4], argv[5]);
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}
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static int win_has_console(void)
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{
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HANDLE h;
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h = CreateFile("CONOUT$", GENERIC_WRITE, FILE_SHARE_WRITE, NULL,
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OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
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if (h == INVALID_HANDLE_VALUE) {
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return 0;
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} else {
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CloseHandle(h);
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return 1;
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}
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}
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