mirrors
/
fltk
mirror of https://github.com/fltk/fltk
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

Improve reuse of mmap'ed data by Wayland buffers

This commit is contained in:
ManoloFLTK 2023-09-17 13:05:50 +02:00
parent 824818303c
commit be07e5448f
3 changed files with 23 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
src/drivers/Wayland/Fl_Wayland_Graphics_Driver.H
View File

@ -51,6 +51,7 @@ public:
struct wl_list buffers; // to list of fl_wld_buffer's from this pool
};
static const uint32_t wld_format;
static struct wl_shm_pool *pool; // the current pool
void copy_offscreen(int x, int y, int w, int h, Fl_Offscreen osrc, int srcx, int srcy) FL_OVERRIDE;
static struct wld_buffer *create_shm_buffer(int width, int height);
static void buffer_release(struct wld_window *window);

19
src/drivers/Wayland/Fl_Wayland_Graphics_Driver.cxx
View File

@ -28,8 +28,8 @@ extern "C" {
# include "../../../libdecor/src/os-compatibility.h" // for os_create_anonymous_file()
}
// used by create_shm_buffer and buffer_release
static struct wl_shm_pool *pool = NULL; // the current pool
struct wl_shm_pool *Fl_Wayland_Graphics_Driver::pool = NULL;
struct Fl_Wayland_Graphics_Driver::wld_buffer *
@ -43,12 +43,17 @@ struct Fl_Wayland_Graphics_Driver::wld_buffer *
struct wld_shm_pool_data *pool_data = pool ? // data record attached to current pool
(struct wld_shm_pool_data *)wl_shm_pool_get_user_data(pool) : NULL;
int pool_size = pool ? pool_data->pool_size : default_pool_size; // current pool size
if (pool) {
// last wld_buffer created from current pool
if (pool_data && !wl_list_empty(&pool_data->buffers)) {
struct wld_buffer *record = wl_container_of(pool_data->buffers.next, record, link);
chunk_offset = ((char*)record->data - pool_data->pool_memory) + record->draw_buffer.data_size;
}
if (!pool || chunk_offset + size > pool_size) { // if true, a new pool is needed
if (pool_data && wl_list_empty(&pool_data->buffers)) {
wl_shm_pool_destroy(pool);
/*int err =*/ munmap(pool_data->pool_memory, pool_data->pool_size);
//printf("munmap(%p)->%d\n", pool_data->pool_memory, err);
free(pool_data);
}
chunk_offset = 0;
pool_size = default_pool_size;
if (size > pool_size) pool_size = 2 * size; // a larger pool is needed
@ -63,10 +68,10 @@ struct Fl_Wayland_Graphics_Driver::wld_buffer *
close(fd);
Fl::fatal("mmap failed: %s\n", strerror(errno));
}
//printf("os_create_anonymous_file(%d): mmap(%p)\n", pool_size, pool_data->pool_memory);
Fl_Wayland_Screen_Driver *scr_driver = (Fl_Wayland_Screen_Driver*)Fl::screen_driver();
pool = wl_shm_create_pool(scr_driver->wl_shm, fd, pool_size);
close(fd); // does not prevent the mmap'ed memory from being used
//puts("wl_shm_create_pool");
pool_data->pool_size = pool_size;
wl_list_init(&pool_data->buffers);
wl_shm_pool_set_user_data(pool, pool_data);
@ -186,12 +191,12 @@ void Fl_Wayland_Graphics_Driver::buffer_release(struct wld_window *window)
// remove wld_buffer from list of pool's buffers
wl_list_remove(&window->buffer->link);
//printf("last=%p\n", wl_list_empty(&pool_data->buffers) ? NULL : pool_data->buffers.next);
if (wl_list_empty(&pool_data->buffers)) { // all buffers from pool are gone
if (wl_list_empty(&pool_data->buffers) && my_pool != pool) {
// all buffers from my_pool are gone
wl_shm_pool_destroy(my_pool);
/*int err = */munmap(pool_data->pool_memory, pool_data->pool_size);
//printf("munmap(%p)->%d\n", pool_data->pool_memory, err);
free(pool_data);
if (my_pool == pool) pool = NULL;
}
delete[] window->buffer->draw_buffer.buffer;
window->buffer->draw_buffer.buffer = NULL;

10
src/drivers/Wayland/Fl_Wayland_Screen_Driver.cxx
View File

@ -1252,6 +1252,16 @@ void Fl_Wayland_Screen_Driver::open_display_platform() {
void Fl_Wayland_Screen_Driver::close_display() {
if (Fl_Wayland_Graphics_Driver::pool ) {
struct Fl_Wayland_Graphics_Driver::wld_shm_pool_data *pool_data =
(struct Fl_Wayland_Graphics_Driver::wld_shm_pool_data *)
wl_shm_pool_get_user_data(Fl_Wayland_Graphics_Driver::pool);
wl_shm_pool_destroy(Fl_Wayland_Graphics_Driver::pool);
/*int err = */munmap(pool_data->pool_memory, pool_data->pool_size);
//printf("munmap(%p)->%d\n", pool_data->pool_memory, err);
free(pool_data);
Fl_Wayland_Graphics_Driver::pool = NULL;
}
if (text_input_base) {
disable_im();
zwp_text_input_manager_v3_destroy(text_input_base);