Re: g_spawn_asnyc -- What is wrong ?

[Harring Figueiredo <harringf yahoo com>]

 Folk,

 I discovery something intersting. If I call g_spawn_async_with_pipes(...) with
the callback func argument, the it does not work, but if I pass NULL to it, it
works.

cmd= "/bin/rm hello.txt";
g_spawn_async_with_pipes(NULL,cmd ,NULL,
          G_SPAWN_LEAVE_DESCRIPTORS_OPEN | G_SPAWN_SEARCH_PATH, func,
NULL,&pid, NULL, NULL, NULL, &err) will not fail, but the hello.txt does not
get removed.

With:
g_spawn_async_with_pipes(NULL,cmd ,NULL,
          G_SPAWN_LEAVE_DESCRIPTORS_OPEN | G_SPAWN_SEARCH_PATH, NULL,NULL,
          &pid, NULL, NULL, NULL, &err);  the hello.txt file gets removed.




--- Harring Figueiredo <harringf yahoo com> wrote:
>   Tristan,
>
>  Thanks for the reply.
>
>  you are right - remove() is ISO standard, but apparently broken on windows.
> It
> seems that it is a call to unlink(), thus it fails when using on directories
> ((the only reason I know that is that GNU remove() man pages talks about it.
> The other reason I cannot use remove() is that I will potentially get a path
> such as  c:\mydir\*. In this case, I am supposed to delete the entire
> dicerctoy
> recursively - which might be an expense operation from my single threaded app
> if there are a lot of directories/files on it.
>
>   As far as the changes you suggested, I added:
>  
>    char* cmd = "/bin/rm hello.txt";
>    char** cmd1;
>    int i = 0;
>    if ( g_shell_parse_argv(cmd,&i, &cmd1, &err) != TRUE)
>    {
>            g_print("Error parsing arg: %s\n", err->message);
>            return 1;
>    }
>    g_print("Number of args: %d\n", i);  /* this prints 2 as expected */
>
>
>  but it still does not remove the file hello.txt from the current dir. I am
> sure
> I am calling g_spawn the wrong way -- but where ?
>
>
>   HELP :)
>
>   Thanks again.
> Harring
>
>
> --- Tristan Van Berkom <vantr touchtunes com> wrote:
> > try using:
> >     g_shell_parse_argv()
> > (that will just do the argv setup for you)
> >
> > and remember that
> >     sprintf(text, "this and" "that");
> > will make text:
> >     "this andthat"
> > where as
> >     sprintf(text, "this and " "that");
> > will make:
> >     "this and that"
> >
> > so your cmd is actualy:
> >
> > "/bin/rmhello.txt"
> >
> > instead of:
> >
> > "/bin/rm hello.txt"
> >
> > BTW:
> > isn't "remove()" from stdio.h platform indepentend ?
> > (I'm not sure about opendir()/readdir() from dirent.h
> > but I think thats standard too.)
> >
> >
> > Harring Figueiredo wrote:
> > >  Hello all,
> > >
> > >  I am trying to use g_spawn_async, but so far I am not getting the
> results
> > I
> > > expect.
> > >
> > >   In the program below:
> > >   1) The output from the func() is never displayed.
> > >   2) The file hello.txt is never removed.
> > >   3) I get the child's pid correctly (i.e, not 0 or -1)
> > >   4) The program does not report errors.
> > >
> > >    I am sure I am doing something really wrong -- where ?
> > >
> > >   Note: I am trying to do this so that I can delete a directory
> recursively
> > in
> > > windoze and Linux, so I am trying to stay platform independent by using
> > this -
> > > Any better alternatives ?
> > >
> > >    Thanks in advance.
> > >
> > >
> > > === Program ==========
> > >
> > > void func(gpointer data) {
> > > g_print("Executed child func ...");
> > > }
> > >
> > > int deltree(const char* path)
> > > {
> > >    char* cmd[] = { "/bin/rm" "hello.txt", "NULL"};
> > >    gint pid = 0;
> > >    GError* err = NULL;
> > >    gboolean ret_val;
> > >     GSpawnChildSetupFunc  func;
> > >
> > >    ret_val = g_spawn_async_with_pipes(NULL,cmd ,NULL,
> > >            G_SPAWN_LEAVE_DESCRIPTORS_OPEN | G_SPAWN_SEARCH_PATH, func,
> > NULL,
> > >            &pid, NULL, NULL, NULL, &err);
> > >    if(ret_val != TRUE)
> > >        g_print("Failed..\n");
> > >    else
> > >        g_print("Did not fail.\n");
> > >
> > >    if(err) g_print("Error: %s\n" , err->message);
> > >    g_print("Child PID: %d\n" , pid);
> > >
> > >    g_print (" Done...\n");
> > >    return 0;
> > > }
> > >
> > > int main()
> > > {
> > >     deltree("path");
> > >     return 0;
> > > }
> > >
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