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44 lines
1.1 KiB
44 lines
1.1 KiB
3 years ago
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#include <assert.h>
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#include <stdint.h>
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#include <stdlib.h>
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#include <wlr/util/log.h>
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#include "backend/drm/bo_handle_table.h"
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static size_t align(size_t val, size_t align) {
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size_t mask = align - 1;
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return (val + mask) & ~mask;
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}
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void drm_bo_handle_table_finish(struct wlr_drm_bo_handle_table *table) {
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free(table->nrefs);
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}
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bool drm_bo_handle_table_ref(struct wlr_drm_bo_handle_table *table,
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uint32_t handle) {
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assert(handle != 0);
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if (handle > table->len) {
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// Grow linearily, because we don't expect the number of BOs to explode
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size_t len = align(handle + 1, 512);
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size_t *nrefs = realloc(table->nrefs, len * sizeof(size_t));
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if (nrefs == NULL) {
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wlr_log_errno(WLR_ERROR, "realloc failed");
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return false;
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}
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memset(&nrefs[table->len], 0, (len - table->len) * sizeof(size_t));
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table->len = len;
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table->nrefs = nrefs;
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}
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table->nrefs[handle]++;
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return true;
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}
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size_t drm_bo_handle_table_unref(struct wlr_drm_bo_handle_table *table,
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uint32_t handle) {
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assert(handle < table->len);
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assert(table->nrefs[handle] > 0);
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table->nrefs[handle]--;
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return table->nrefs[handle];
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}
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