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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:30:19 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:30:19 +0000 |
commit | 5c1676dfe6d2f3c837a5e074117b45613fd29a72 (patch) | |
tree | cbffb45144febf451e54061db2b21395faf94bfe /app/core/gimp-atomic.c | |
parent | Initial commit. (diff) | |
download | gimp-5c1676dfe6d2f3c837a5e074117b45613fd29a72.tar.xz gimp-5c1676dfe6d2f3c837a5e074117b45613fd29a72.zip |
Adding upstream version 2.10.34.upstream/2.10.34upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'app/core/gimp-atomic.c')
-rw-r--r-- | app/core/gimp-atomic.c | 95 |
1 files changed, 95 insertions, 0 deletions
diff --git a/app/core/gimp-atomic.c b/app/core/gimp-atomic.c new file mode 100644 index 0000000..c5a54b8 --- /dev/null +++ b/app/core/gimp-atomic.c @@ -0,0 +1,95 @@ +/* GIMP - The GNU Image Manipulation Program + * Copyright (C) 1995 Spencer Kimball and Peter Mattis + * + * gimp-atomic.c + * Copyright (C) 2018 Ell + * + * 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/>. + */ + +#include "config.h" + +#include <gdk-pixbuf/gdk-pixbuf.h> +#include <gegl.h> + +#include "core-types.h" + +#include "gimp-atomic.h" + + +/* GSList */ + + +static GSList gimp_atomic_slist_sentinel; + + +void +gimp_atomic_slist_push_head (GSList * volatile *list, + gpointer data) +{ + GSList *old_head; + GSList *new_head; + + g_return_if_fail (list != NULL); + + new_head = g_slist_alloc (); + + new_head->data = data; + + do + { + do + { + old_head = g_atomic_pointer_get (list); + } + while (old_head == &gimp_atomic_slist_sentinel); + + new_head->next = old_head; + } + while (! g_atomic_pointer_compare_and_exchange (list, old_head, new_head)); +} + +gpointer +gimp_atomic_slist_pop_head (GSList * volatile *list) +{ + GSList *old_head; + GSList *new_head; + gpointer data; + + g_return_val_if_fail (list != NULL, NULL); + + do + { + do + { + old_head = g_atomic_pointer_get (list); + } + while (old_head == &gimp_atomic_slist_sentinel); + + if (! old_head) + return NULL; + } + while (! g_atomic_pointer_compare_and_exchange (list, + old_head, + &gimp_atomic_slist_sentinel)); + + new_head = old_head->next; + data = old_head->data; + + g_atomic_pointer_set (list, new_head); + + g_slist_free1 (old_head); + + return data; +} |