You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
44 lines
1.1 KiB
44 lines
1.1 KiB
#include <assert.h>
|
|
#include <stdint.h>
|
|
#include <stdlib.h>
|
|
#include <wlr/util/log.h>
|
|
#include "backend/drm/bo_handle_table.h"
|
|
|
|
static size_t align(size_t val, size_t align) {
|
|
size_t mask = align - 1;
|
|
return (val + mask) & ~mask;
|
|
}
|
|
|
|
void drm_bo_handle_table_finish(struct wlr_drm_bo_handle_table *table) {
|
|
free(table->nrefs);
|
|
}
|
|
|
|
bool drm_bo_handle_table_ref(struct wlr_drm_bo_handle_table *table,
|
|
uint32_t handle) {
|
|
assert(handle != 0);
|
|
|
|
if (handle > table->len) {
|
|
// Grow linearly, because we don't expect the number of BOs to explode
|
|
size_t len = align(handle + 1, 512);
|
|
size_t *nrefs = realloc(table->nrefs, len * sizeof(size_t));
|
|
if (nrefs == NULL) {
|
|
wlr_log_errno(WLR_ERROR, "realloc failed");
|
|
return false;
|
|
}
|
|
memset(&nrefs[table->len], 0, (len - table->len) * sizeof(size_t));
|
|
table->len = len;
|
|
table->nrefs = nrefs;
|
|
}
|
|
|
|
table->nrefs[handle]++;
|
|
return true;
|
|
}
|
|
|
|
size_t drm_bo_handle_table_unref(struct wlr_drm_bo_handle_table *table,
|
|
uint32_t handle) {
|
|
assert(handle < table->len);
|
|
assert(table->nrefs[handle] > 0);
|
|
table->nrefs[handle]--;
|
|
return table->nrefs[handle];
|
|
}
|