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#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];
}
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