notmuch/bindings/ruby/threads.c
Felipe Contreras 5f49e3421f ruby: new notmuch_rb_object_destroy() helper
The struct used to store the types (rb_data_type_t) contains a "data"
field where we can store whatever we want. I use that field to store a
pointer to the corresponding destroy function. For example
notmuch_rb_database_type contains a pointer to notmuch_database_destroy.

I cast that pointer as a notmuch_status_t (func*)(void *) and call
that function passing the internal object (e.g. notmuch_database_t).

Using the rb_data_type_t data we can call the correct notmuch destroy
function.

Therefore this:

  ret = ((notmuch_status_t (*)(void *)) type->data) (nm_object);

Is effectively the same as this:

  ret = notmuch_database_destroy (database);

The advantage of doing it this way is that much less code is necesary
since each rb_data_type_t has the corresponding destroy function stored
in it.

Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
2021-05-17 07:25:14 -03:00

55 lines
1.6 KiB
C

/* The Ruby interface to the notmuch mail library
*
* Copyright © 2010, 2011 Ali Polatel
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see https://www.gnu.org/licenses/ .
*
* Author: Ali Polatel <alip@exherbo.org>
*/
#include "defs.h"
/*
* call-seq: THREADS.destroy! => nil
*
* Destroys the threads, freeing all resources allocated for it.
*/
VALUE
notmuch_rb_threads_destroy (VALUE self)
{
notmuch_rb_object_destroy (self, &notmuch_rb_threads_type);
return Qnil;
}
/* call-seq: THREADS.each {|item| block } => THREADS
*
* Calls +block+ once for each thread in +self+, passing that element as a
* parameter.
*/
VALUE
notmuch_rb_threads_each (VALUE self)
{
notmuch_thread_t *thread;
notmuch_threads_t *threads;
Data_Get_Notmuch_Threads (self, threads);
for (; notmuch_threads_valid (threads); notmuch_threads_move_to_next (threads)) {
thread = notmuch_threads_get (threads);
rb_yield (Data_Wrap_Notmuch_Object (notmuch_rb_cThread, &notmuch_rb_thread_type, thread));
}
return self;
}