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/***********************************************************************/
/* */
/* OCaml */
/* */
/* Xavier Leroy and Pascal Cuoq, projet Cristal, INRIA Rocquencourt */
/* */
/* Copyright 1996 Institut National de Recherche en Informatique et */
/* en Automatique. All rights reserved. This file is distributed */
/* under the terms of the GNU Library General Public License, with */
/* the special exception on linking described in file ../../LICENSE. */
/* */
/***********************************************************************/
/* $Id$ */
#include <windows.h>
#include <mlvalues.h>
#include <osdeps.h>
#include "unixsupport.h"
static int win_has_console(void);
value win_create_process_native(value cmd, value cmdline, value env,
value fd1, value fd2, value fd3)
{
PROCESS_INFORMATION pi;
STARTUPINFO si;
char * exefile, * envp;
int flags;
exefile = search_exe_in_path(String_val(cmd));
if (env != Val_int(0)) {
envp = String_val(Field(env, 0));
} else {
envp = NULL;
}
/* Prepare stdin/stdout/stderr redirection */
ZeroMemory(&si, sizeof(STARTUPINFO));
si.cb = sizeof(STARTUPINFO);
si.dwFlags = STARTF_USESTDHANDLES;
si.hStdInput = Handle_val(fd1);
si.hStdOutput = Handle_val(fd2);
si.hStdError = Handle_val(fd3);
/* If we do not have a console window, then we must create one
before running the process (keep it hidden for apparence).
If we are starting a GUI application, the newly created
console should not matter. */
if (win_has_console())
flags = 0;
else {
flags = CREATE_NEW_CONSOLE;
si.dwFlags = (STARTF_USESHOWWINDOW | STARTF_USESTDHANDLES);
si.wShowWindow = SW_HIDE;
}
/* Create the process */
if (! CreateProcess(exefile, String_val(cmdline), NULL, NULL,
TRUE, flags, envp, NULL, &si, &pi)) {
win32_maperr(GetLastError());
uerror("create_process", cmd);
}
CloseHandle(pi.hThread);
/* Return the process handle as pseudo-PID
(this is consistent with the wait() emulation in the MSVC C library */
return Val_long(pi.hProcess);
}
CAMLprim value win_create_process(value * argv, int argn)
{
return win_create_process_native(argv[0], argv[1], argv[2],
argv[3], argv[4], argv[5]);
}
static int win_has_console(void)
{
HANDLE h, log;
int i;
h = CreateFile("CONOUT$", GENERIC_WRITE, FILE_SHARE_WRITE, NULL,
OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
if (h == INVALID_HANDLE_VALUE) {
return 0;
} else {
CloseHandle(h);
return 1;
}
}
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