/*
* Initialize the shared memory region for hybris, in order to store
* pshared mutex, condition and rwlock
*/
static void _hybris_shm_init()
{
if (_hybris_shm_fd < 0) {
const size_t size_to_map = HYBRIS_SHM_DATA_HEADER_SIZE + HYBRIS_DATA_SIZE; /* 4000 bytes for the data, plus the header size */
/* initialize or get shared memory segment */
_hybris_shm_fd = shm_open(HYBRIS_SHM_PATH, O_RDWR, 0660);
if (_hybris_shm_fd >= 0) {
/* Map the memory object */
_hybris_shm_data = (hybris_shm_data_t *)mmap( NULL, size_to_map,
PROT_READ | PROT_WRITE, MAP_SHARED,
_hybris_shm_fd, 0 );
_current_mapped_size = size_to_map;
_sync_mmap_with_shm();
}
else {
LOGD("Creating a new shared memory segment.");
mode_t pumask = umask(0);
_hybris_shm_fd = shm_open(HYBRIS_SHM_PATH, O_RDWR | O_CREAT, 0666);
umask(pumask);
if (_hybris_shm_fd >= 0) {
ftruncate( _hybris_shm_fd, size_to_map );
/* Map the memory object */
_hybris_shm_data = (hybris_shm_data_t *)mmap( NULL, size_to_map,
PROT_READ | PROT_WRITE, MAP_SHARED,
_hybris_shm_fd, 0 );
if (_hybris_shm_data == MAP_FAILED) {
HYBRIS_ERROR_LOG(HOOKS, "ERROR: mmap failed: %s\n", strerror(errno));
_release_shm();
}
else {
_current_mapped_size = size_to_map;
/* Initialize the memory object */
memset((void*)_hybris_shm_data, 0, size_to_map);
_hybris_shm_data->max_offset = HYBRIS_DATA_SIZE;
pthread_mutexattr_t attr;
pthread_mutexattr_init(&attr);
pthread_mutexattr_setpshared(&attr, PTHREAD_PROCESS_SHARED);
pthread_mutex_init(&_hybris_shm_data->access_mutex, &attr);
pthread_mutexattr_destroy(&attr);
atexit(_release_shm);
}
}
else {
HYBRIS_ERROR_LOG(HOOKS, "ERROR: Couldn't create shared memory segment !");
}
}
}
}
static void
server_wlegl_get_server_buffer_handle(wl_client *client, wl_resource *res, uint32_t id, int32_t width, int32_t height, int32_t format, int32_t usage)
{
if (width == 0 || height == 0) {
wl_resource_post_error(res, 0, "invalid buffer size: %u,%u\n", width, height);
return;
}
server_wlegl *wlegl = server_wlegl_from(res);
wl_resource *resource = wl_resource_create(client, &android_wlegl_server_buffer_handle_interface, wl_resource_get_version(res), id);
buffer_handle_t _handle;
int _stride;
usage |= GRALLOC_USAGE_HW_COMPOSER;
int r = hybris_gralloc_allocate(width, height, format, usage, &_handle, (uint32_t*)&_stride);
if (r) {
HYBRIS_ERROR_LOG(SERVER_WLEGL, "failed to allocate buffer\n");
}
server_wlegl_buffer *buffer = server_wlegl_buffer_create_server(client, width, height, _stride, format, usage, _handle, wlegl);
struct wl_array ints;
int *ints_data;
wl_array_init(&ints);
ints_data = (int*) wl_array_add(&ints, _handle->numInts * sizeof(int));
memcpy(ints_data, _handle->data + _handle->numFds, _handle->numInts * sizeof(int));
android_wlegl_server_buffer_handle_send_buffer_ints(resource, &ints);
wl_array_release(&ints);
for (int i = 0; i < _handle->numFds; i++) {
android_wlegl_server_buffer_handle_send_buffer_fd(resource, _handle->data[i]);
}
android_wlegl_server_buffer_handle_send_buffer(resource, buffer->resource, format, _stride);
wl_resource_destroy(resource);
}
