88 lines
2.9 KiB
C
88 lines
2.9 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, with */
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/* the special exception on linking described in file ../../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 <osdeps.h>
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#include "unixsupport.h"
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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 = search_exe_in_path(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 create one
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before running the process (keep it hidden for apparence).
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Also one must suppress spurious flags in si.dwFlags.
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Otherwise the redirections are ignored.
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If we are starting a GUI application, the newly created
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console should not 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 = CREATE_NEW_CONSOLE;
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si.dwFlags = (STARTF_USESHOWWINDOW | STARTF_USESTDHANDLES);
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si.wShowWindow = SW_HIDE;
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}
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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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win32_maperr(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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CAMLprim value win_create_process(value * argv, int argn)
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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, log;
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int i;
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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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