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Lines Matching refs:shared

752  * This creates a shared memory buffer for use with GLXPixmaps
759     DRIPixmapBufferPtr shared;
767     shared = malloc(sizeof(*shared));
768     if(NULL == shared) {
772     shared->pDrawable = pDrawable;
773     shared->refCount = 1;
776 	shared->bytesPerPixel = 4;
778 	shared->bytesPerPixel = 2;
781     shared->width = pDrawable->width;
782     shared->height = pDrawable->height;
784     if(-1 == snprintf(shared->shmPath, sizeof(shared->shmPath),
790     shared->fd = shm_open(shared->shmPath, 
794     if(-1 == shared->fd) {
795 	free(shared);
799     shared->length = shared->width * shared->height * shared->bytesPerPixel;
801     if(-1 == ftruncate(shared->fd, shared->length)) {
803 	shm_unlink(shared->shmPath);
804 	close(shared->fd);
805 	free(shared);
809     shared->buffer = mmap(NULL, shared->length,
811                           MAP_FILE | MAP_SHARED, shared->fd, 0);
813     if(MAP_FAILED == shared->buffer) {
814 	ErrorF("failed to mmap shared memory.");
815 	shm_unlink(shared->shmPath);
816 	close(shared->fd);
817 	free(shared);
821     strncpy(path, shared->shmPath, pathmax);
824     dixSetPrivate(&pPix->devPrivates, DRIPixmapBufferPrivKey, shared);
835     DRIPixmapBufferPtr shared;
842     shared = dixLookupPrivate(&pPix->devPrivates, DRIPixmapBufferPrivKey);
844     if(NULL == shared)
847     assert(pDrawable->width == shared->width);
848     assert(pDrawable->height == shared->height);
850     *width = shared->width;
851     *height = shared->height;
852     *bpp = shared->bytesPerPixel;
853     *pitch = shared->width * shared->bytesPerPixel;
854     *ptr = shared->buffer;    
861     DRIPixmapBufferPtr shared;
869     shared = dixLookupPrivate(&pPix->devPrivates, DRIPixmapBufferPrivKey);
871     if(NULL == shared)
874     close(shared->fd);
875     munmap(shared->buffer, shared->length);
876     shm_unlink(shared->shmPath);
877     free(shared);