That's the way we synchronously create a process on Windows.

This commit was SVN r11326.

opal/util/few.c

@@ -30,6 +30,8 @@
 #endif
 
 #include "opal/util/few.h"
+#include "opal/util/basename.h"
+#include "opal/util/argv.h"
 #include "opal/constants.h"
 
 int opal_few(char *argv[], int *status)
@@ -82,41 +84,44 @@ int opal_few(char *argv[], int *status)
 
 #else
 
-    /* Welcome to windows land. This is apparently a simple fork() exec() 
+    STARTUPINFO si;
-       procedure and hence should not be too difficult to implement */
+    PROCESS_INFORMATION pi;
-       HANDLE new_process;
+    DWORD process_stat;
-       STARTUPINFO si;
+    char* command  = argv[0];
-       PROCESS_INFORMATION pi;
+    char* exec_command;
-       DWORD process_stat;
+
-
+    ZeroMemory (&si, sizeof(si));
-       /* it does seem as if the environment is getting propogated, so I 
+    ZeroMemory (&pi, sizeof(pi));
-          will follow the same procedure in my code */
+
-
+    _flushall();  /* Push all output */
-          /* ANJU: Have to implement signal handling */
+
-
+    GetStartupInfo (&si);
-       ZeroMemory (&si, sizeof(si));
+    argv[0] = opal_basename( command );
-       ZeroMemory (&pi, sizeof(pi));
+    exec_command = opal_argv_join( argv, ' ' );
-       
+    free( argv[0] );
-       GetStartupInfo (&si);
+    argv[0] = command;
-       if (!CreateProcess (argv[0], 
+    if (!CreateProcess (argv[0],
-                           argv, 
+                        (LPSTR)exec_command,
-                           NULL,
+                        NULL,
-                           NULL,
+                        NULL,
-                           TRUE,
+                        TRUE,
-                           0,  
+                        0,
-                           NULL,
+                        NULL,
-                           NULL,
+                        NULL,
-                           &si,
+                        &si,
-                           &pi)){
+                        &pi)){
-         /* actual error can be got by simply calling GetLastError() */
+        *status = (int)GetLastError();
-         return OPAL_ERROR; 
+        return OPAL_ERROR;
-       }
+    }
-
+
-       /* wait for child to die */
+    /* wait for child to die */
-       WaitForSingleObject(pi.hProcess, INFINITE);
+    WaitForSingleObject(pi.hProcess, INFINITE);
-       GetExitCodeProcess(pi.hProcess, &process_stat);
+    if( 0 == GetExitCodeProcess(pi.hProcess, &process_stat) ) {
-
+        *status = (int)GetLastError();
-       SetLastError(process_stat);
+        return OPAL_ERROR;
-       return OPAL_SUCCESS;
+    }
+    *status = (int)process_stat;
+
+    return OPAL_SUCCESS;
 #endif
 }