static void
test_foreach_message_queue() {
message_queue *queue = create_message_queue();
assert_true( queue != NULL );
buffer *first_buf = alloc_buffer();
append_string( first_buf, "first_buffer" );
assert_true( enqueue_message( queue, first_buf ) );
assert_int_equal( queue->length, 1 );
buffer *second_buf = alloc_buffer();
append_string( second_buf, "second_buffer" );
assert_true( enqueue_message( queue, second_buf ) );
assert_int_equal( queue->length, 2 );
buffer *third_buf = alloc_buffer();
append_string( third_buf, "third_buffer" );
assert_true( enqueue_message( queue, third_buf ) );
assert_int_equal( queue->length, 3 );
buffer *deq_buf = dequeue_message( queue );
assert_true( deq_buf == first_buf );
char *user_data = xstrdup( "user_data" );
count = 0;
foreach_message_queue( queue, test_foreach_message_queue_helper, user_data );
assert_int_equal( count, 2 );
xfree( user_data );
assert_true( delete_message_queue( queue ) );
}
static void
test_multiple_queueing() {
message_queue *queue = create_message_queue();
assert_true( queue != NULL );
buffer *first_buf = alloc_buffer();
assert_true( enqueue_message( queue, first_buf ) );
assert_int_equal( queue->length, 1 );
buffer *deq_buf = dequeue_message( queue );
assert_true( deq_buf == first_buf );
free_buffer( deq_buf );
assert_int_equal( queue->length, 0 );
first_buf = alloc_buffer();
assert_true( enqueue_message( queue, first_buf ) );
assert_int_equal( queue->length, 1 );
buffer *second_buf = alloc_buffer();
assert_true( enqueue_message( queue, second_buf ) );
assert_int_equal( queue->length, 2 );
deq_buf = dequeue_message( queue );
assert_true( deq_buf == first_buf );
free_buffer( deq_buf );
assert_int_equal( queue->length, 1 );
buffer *third_buf = alloc_buffer();
assert_true( enqueue_message( queue, third_buf ) );
assert_int_equal( queue->length, 2 );
buffer *fourth_buf = alloc_buffer();
assert_true( enqueue_message( queue, fourth_buf ) );
assert_int_equal( queue->length, 3 );
deq_buf = dequeue_message( queue );
assert_true( deq_buf == second_buf );
free_buffer( deq_buf );
assert_int_equal( queue->length, 2 );
deq_buf = dequeue_message( queue );
assert_true( deq_buf == third_buf );
free_buffer( deq_buf );
assert_int_equal( queue->length, 1 );
deq_buf = dequeue_message( queue );
assert_true( deq_buf == fourth_buf );
free_buffer( deq_buf );
assert_int_equal( queue->length, 0 );
assert_true( delete_message_queue( queue ) );
}
static INLINE void *
remote_context_create_rasterizer_state(struct pipe_context *_pipe,
const struct pipe_rasterizer_state *state)
{
ALLOC_OUT_MESSAGE(create_rast_state, message);
message->base.opcode = REMREQ_CREATE_RAST_STATE;
message->pipe = PIPE_HANDLE(_pipe);
message->state = *state;
// Struct copy
uint32_t handle = get_fresh_rast_handle(_pipe->screen);
message->handle = handle;
DBG("Create new rasterizer state: handle %u\n", handle);
enqueue_message(message);
struct remote_opaque_rast_state* remote_rast = CALLOC_STRUCT(remote_opaque_rast_state);
PANIC_IF_NULL(remote_rast);
remote_rast->handle = handle;
return remote_rast;
}
/**
* @brief notify the command receiver that a chid printed a line on it's stderr.
* @param c the child hat generated @p line
* @param line the line received from the child stderr
* @returns 0 on success, -1 on error.
*/
int on_cmd_stderr(child_node *c, char *line) {
message *m;
struct cmd_stderr_info *stderr_info;
size_t len;
uint16_t seq;
seq = get_sequence(&(c->conn->ctrl_seq), &(c->conn->control.mutex));
len = strlen(line) + 1;
m = create_message(seq, sizeof(struct cmd_stderr_info) + len, CTRL_ID);
if(!m) {
print(ERROR, "cannot create messages");
return -1;
}
stderr_info = (struct cmd_stderr_info *) m->data;
stderr_info->cmd_action = CMD_STDERR;
stderr_info->id = c->id;
memcpy(stderr_info->line, line, len);
if(enqueue_message(&(c->conn->outcoming), m)) {
print(ERROR, "cannot enqueue messages");
dump_message(m);
free_message(m);
return -1;
}
return 0;
}
static INLINE void
remote_context_bind_sampler_states(struct pipe_context *_pipe,
unsigned num_states, void **states)
{
DBG("Bind sampler states: %u states\n", num_states);
struct remreq_bind_sampler_state* header =
allocate_message_memory(
sizeof(struct remreq_bind_sampler_state)
+ (num_states * sizeof(uint32_t)));
header->base.opcode = REMREQ_BIND_SAMPLER_STATE;
header->pipe = PIPE_HANDLE(_pipe);
header->nstates = num_states;
uint32_t* state_handles =
(uint32_t*)((char*)header + sizeof(struct remreq_bind_sampler_state));
unsigned i;
for(i = 0; i < num_states; i++) {
state_handles[i] = SAMPLER_HANDLE(states[i]);
}
enqueue_message(header);
}
static void
test_enqueue_message_if_queue_is_not_created() {
message_queue *queue = NULL;
buffer *enq_buf = alloc_buffer();
expect_assert_failure( enqueue_message( queue, enq_buf ) );
free_buffer( enq_buf );
}
static INLINE void
remote_context_set_constant_buffer(struct pipe_context *_pipe,
uint shader, uint index,
const struct pipe_constant_buffer *buffer)
{
DBG("Set constant buffer for shader %u, index %u\n", shader, index);
ALLOC_OUT_MESSAGE(set_constant_buffer, message);
message->base.opcode = REMREQ_SET_CONSTANT_BUFFER;
message->pipe = PIPE_HANDLE(_pipe);
message->shader = shader;
message->index = index;
message->buffer_size = buffer->size;
message->buffer = BUFFER_HANDLE(buffer->buffer);
/*
char* mapped = (char*)pipe_buffer_map(_pipe->screen, buffer->buffer, PIPE_BUFFER_USAGE_CPU_READ);
printf("On setting, constant buffer goes like this:\n");
int i;
for(i = 0; i < buffer->size; i++) {
printf("%4d ", (int)mapped[i]);
if(i % 8 == 7)
printf("\n");
}
printf("\n");
pipe_buffer_unmap(_pipe->screen, buffer->buffer);
*/
enqueue_message(message);
}
static INLINE void
remote_context_set_edgeflags(struct pipe_context *_pipe,
const unsigned *bitfield)
{
if(bitfield) {
DBG("Set edge flags: %u\n", *bitfield);
}
else {
DBG("Set edge flags: null\n");
}
ALLOC_OUT_MESSAGE(set_edgeflags, message);
message->base.opcode = REMREQ_SET_EDGEFLAGS;
message->pipe = PIPE_HANDLE(_pipe);
if(bitfield) {
message->isnull = 0;
message->flag = *bitfield;
}
else {
message->isnull = 1;
}
enqueue_message(message);
}
static INLINE void
remote_context_set_framebuffer_state(struct pipe_context *_pipe,
const struct pipe_framebuffer_state *state)
{
unsigned i;
ALLOC_OUT_MESSAGE(set_framebuffer_state, message);
message->base.opcode = REMREQ_SET_FRAMEBUFFER_STATE;
message->pipe = PIPE_HANDLE(_pipe);
message->fbwidth = state->width;
message->fbheight = state->height;
message->fbnum_cbufs = state->num_cbufs;
message->fbzsbuf = state->zsbuf ? SURFACE_HANDLE(state->zsbuf) : 0;
for(i = 0; i < PIPE_MAX_COLOR_BUFS; i++)
message->fbcbufs[i] = state->cbufs[i] ? SURFACE_HANDLE(state->cbufs[i]) : 0;
DBG("Set framebuffer state: %dx%d\n", state->width, state->height);
if(message->fbzsbuf) {
DBG("Z/stencil buffer: %u\n", message->fbzsbuf);
}
else {
DBG("No Z/stencil buffer\n");
}
for(i = 0; i < PIPE_MAX_COLOR_BUFS; i++)
if(message->fbcbufs[i])
DBG("Colour buffer %d: texture %u\n", i, message->fbcbufs[i]);
enqueue_message(message);
struct remote_context* rctx = (struct remote_context*)_pipe;
rctx->current_framebuffer_state = *state; // Struct copy
}
static INLINE struct pipe_query *
remote_context_create_query(struct pipe_context *_pipe,
unsigned query_type)
{
// Despite appearances, pipe_query is actually an opaque struct.
ALLOC_OUT_MESSAGE(create_query, message);
message->base.opcode = REMREQ_CREATE_QUERY;
message->pipe = PIPE_HANDLE(_pipe);
message->query_type = query_type;
uint32_t handle = get_fresh_query_handle(_pipe->screen);
DBG("New query %u, type %x\n", handle, query_type);
message->handle = handle;
enqueue_message(message);
struct remote_pipe_query* opaque = CALLOC_STRUCT(remote_pipe_query);
PANIC_IF_NULL(opaque);
opaque->handle = handle;
return (struct pipe_query*)opaque;
}
static INLINE void *
remote_context_create_vs_state(struct pipe_context *_pipe,
const struct pipe_shader_state *state)
{
int tokens = tgsi_num_tokens(state->tokens);
struct remreq_create_vs_state* header =
allocate_message_memory(
sizeof(struct remreq_create_vs_state)
+ (tokens * sizeof(struct tgsi_token)));
uint32_t handle = get_fresh_vs_handle(_pipe->screen);
DBG("Create new VS state: handle %u\n", handle);
header->base.opcode = REMREQ_CREATE_VS_STATE;
header->pipe = PIPE_HANDLE(_pipe);
header->vs_handle = handle;
char* copy_dest = ((char*)header) + sizeof(struct remreq_create_vs_state);
memcpy(copy_dest, (char*)(state->tokens), sizeof(struct tgsi_token) * tokens);
enqueue_message(header);
struct opaque_remote_vs* retval = CALLOC_STRUCT(opaque_remote_vs);
PANIC_IF_NULL(retval);
retval->handle = handle;
return retval;
}
/**
* @brief handle a command request.
* @param c the connection that send @p msg
* @param msg the request ::message
* @returns 0 on success, -1 on error.
*/
int on_command_request(conn_node *c, message *msg) {
message *reply;
switch(msg->data[0]) {
case CMD_START:
reply = on_cmd_start(c, msg);
break;
case CMD_SIGNAL:
reply = on_cmd_signal(c, msg);
break;
default:
print( ERROR, "unknown command '%02hhX'", msg->data[0] );
reply = NULL;
break;
}
if(!reply)
return 0;
if(enqueue_message(&(c->outcoming), reply)) {
print( ERROR, "cannot enqueue message" );
dump_message(reply);
free_message(reply);
return -1;
}
return 0;
}
static INLINE void
remote_context_set_sampler_textures(struct pipe_context *_pipe,
unsigned num_textures,
struct pipe_texture **textures)
{
// Similar to below
DBG("Set sampler textures\n");
struct remreq_set_sampler_textures* header =
(struct remreq_set_sampler_textures*)
allocate_message_memory(
sizeof(struct remreq_set_sampler_textures) +
num_textures * sizeof(uint32_t));
header->base.opcode = REMREQ_SET_SAMPLER_TEXTURES;
header->pipe = PIPE_HANDLE(_pipe);
header->num_textures = num_textures;
uint32_t* texhandles = (uint32_t*)
((char*)header + sizeof(struct remreq_set_sampler_textures));
unsigned i;
for(i = 0; i < num_textures; i++) {
texhandles[i] = textures[i] ? TEXTURE_HANDLE(textures[i]) : 0;
DBG("Sampler slot %d: texture %u\n", i, texhandles[i]);
}
enqueue_message(header);
}
static INLINE boolean
remote_context_draw_arrays(struct pipe_context *_pipe,
unsigned mode, unsigned start, unsigned count)
{
DBG("Draw arrays: mode %u, start %u, count %u\n", mode, start, count);
mark_framebuffer_dirty(_pipe);
ALLOC_OUT_MESSAGE(draw_arrays, message);
message->base.opcode = REMREQ_DRAW_ARRAYS;
message->pipe = PIPE_HANDLE(_pipe);
message->mode = mode;
message->start = start;
message->count = count;
enqueue_message(message);
return true;
/*
QUEUE_AND_WAIT(message, draw_arrays, reply);
PANIC_IF_NULL(reply);
boolean success = reply->success;
free_message(reply);
return success;
*/
}
static INLINE void
remote_context_set_vertex_elements(struct pipe_context *_pipe,
unsigned num_elements,
const struct pipe_vertex_element *elements)
{
// Send array
DBG("Set vertex elements: %u elements\n", num_elements);
struct remreq_set_vertex_elements* header =
(struct remreq_set_vertex_elements*)
allocate_message_memory(
sizeof(struct remreq_set_vertex_elements) +
num_elements * sizeof(struct pipe_vertex_element));
header->base.opcode = REMREQ_SET_VERTEX_ELEMENTS;
header->pipe = PIPE_HANDLE(_pipe);
header->num_elements = num_elements;
char* dest = ((char*)header) + sizeof(struct remreq_set_vertex_elements);
memcpy(dest, (void*)elements, num_elements * sizeof(struct pipe_vertex_element));
enqueue_message(header);
}
static INLINE void
remote_context_surface_copy(struct pipe_context *_pipe,
boolean do_flip,
struct pipe_surface *dest,
unsigned destx, unsigned desty,
struct pipe_surface *src,
unsigned srcx, unsigned srcy,
unsigned width, unsigned height)
{
DBG("Surface copy: %u-%ux%u-%ux%u --> %u-%ux%u\n", SURFACE_HANDLE(src), srcx, srcy, srcx + width, srcy + height, SURFACE_HANDLE(dest), destx, desty);
ALLOC_OUT_MESSAGE(surface_copy, message);
message->base.opcode = REMREQ_SURFACE_COPY;
message->pipe = PIPE_HANDLE(_pipe);
message->src = SURFACE_HANDLE(src);
message->dest = SURFACE_HANDLE(dest);
message->sx = srcx;
message->sy = srcy;
message->dx = destx;
message->dy = desty;
message->w = width;
message->h = height;
message->do_flip = do_flip;
enqueue_message(message);
}
static void
test_enqueue_message_if_message_is_NULL() {
message_queue *queue = create_message_queue();
assert_true( queue != NULL );
assert_int_equal( queue->length, 0 );
expect_assert_failure( enqueue_message( queue, NULL ) );
assert_true( delete_message_queue( queue ) );
}
void respond_cd(t_socket *connection, t_message packet) {
char *params = (char *) malloc(sizeof(char) * packet.size - 2);
strncpy(params, packet.data, packet.size - 3);
params[packet.size - 3] = '\0';
char buffer[2048];
if (!cd(params)) {
sprintf(buffer, "remote chdir at '%s'\n", params);
text_message(connection, TYPE_SCREEN, buffer);
}
else if (errno == EACCES)
enqueue_message(connection, error_message(2, packet.sequence));
else
enqueue_message(connection, error_message(1, packet.sequence));
if (params != NULL)
free(params);
}
static void
recv_from_secure_channel( int fd, void *user_data ) {
UNUSED( fd );
UNUSED( user_data );
// all queued messages should be processed before receiving new messages from remote
if ( recv_queue->length > 0 ) {
return;
}
if ( fragment_buf == NULL ) {
fragment_buf = alloc_buffer_with_length( RECEIVE_BUFFFER_SIZE );
}
size_t remaining_length = RECEIVE_BUFFFER_SIZE - fragment_buf->length;
char *recv_buf = ( char * ) fragment_buf->data + fragment_buf->length;
ssize_t recv_length = read( connection.fd, recv_buf, remaining_length );
if ( recv_length < 0 ) {
if ( errno == EINTR || errno == EAGAIN || errno == EWOULDBLOCK ) {
return;
}
error( "Receive error ( errno = %s [%d] ).", strerror( errno ), errno );
return;
}
if ( recv_length == 0 ) {
debug( "Connection closed by peer." );
disconnected();
reconnect( NULL );
return;
}
fragment_buf->length += ( size_t ) recv_length;
size_t read_total = 0;
while ( fragment_buf->length >= sizeof( struct ofp_header ) ) {
struct ofp_header *header = fragment_buf->data;
uint16_t message_length = ntohs( header->length );
if ( message_length > fragment_buf->length ) {
break;
}
buffer *message = alloc_buffer_with_length( message_length );
char *p = append_back_buffer( message, message_length );
memcpy( p, fragment_buf->data, message_length );
remove_front_buffer( fragment_buf, message_length );
enqueue_message( recv_queue, message );
read_total += message_length;
}
// remove headroom manually for next call
if ( read_total > 0 ) {
memmove( ( char * ) fragment_buf->data - read_total, fragment_buf->data, fragment_buf->length );
fragment_buf->data = ( char * ) fragment_buf->data - read_total;
}
while ( recv_message_from_secure_channel() == true );
}
/**
* @brief read from a connection
*/
void *connection_reader(void *arg) {
struct message *msg;
conn_node *c;
c=(conn_node *) arg;
#ifndef NDEBUG
print( DEBUG, "started (fd=%d, tid=%lu)", c->fd, pthread_self() );
#endif
while((msg = read_message(c->fd))) {
pthread_mutex_lock(&(c->control.mutex));
while(c->freeze) {
pthread_cond_wait(&(c->control.cond), &(c->control.mutex));
}
pthread_mutex_unlock(&(c->control.mutex));
if(enqueue_message(&(c->incoming), msg)) {
print( ERROR, "cannot enqueue received message" );
dump_message(msg);
free_message(msg);
}
}
stop_connection(c);
pthread_mutex_lock(&(c->control.mutex));
while(!c->writer_done || !c->worker_done) {
pthread_cond_wait(&(c->control.cond), &(c->control.mutex));
}
pthread_mutex_unlock(&(c->control.mutex));
pthread_mutex_lock(&(connections.control.mutex));
list_del(&(connections.list), (node *)c);
pthread_mutex_unlock(&(connections.control.mutex));
pthread_cond_broadcast(&(connections.control.cond));
close(c->fd);
#ifndef NDEBUG
print( DEBUG, "connection closed (fd=%d)", c->fd );
#endif
// add me to the death list
send_me_to_graveyard();
free_connection(c);
return 0;
}
static void
test_enqueue_and_delete_message_queue() {
message_queue *queue = create_message_queue();
assert_true( queue != NULL );
assert_int_equal( queue->length, 0 );
buffer *buf = alloc_buffer();
assert_true( enqueue_message( queue, buf ) );
assert_int_equal( queue->length, 1 );
assert_true( delete_message_queue( queue ) );
}
/**
* @brief send handlers definitions
* @param conn the ::connection to send these definitions
* @returns 0 on success, -1 on error.
*/
int send_handlers_list(conn_node *conn) {
handler *h;
message *m;
struct hndl_list_info *handlers_info;
struct hndl_info *handler_info;
int ret;
size_t array_size;
ret=-1;
array_size=0;
for(h=(handler *) handlers.head; h; h=(handler *) h->next) {
array_size += sizeof(struct hndl_info);
array_size += strlen(h->name) +1;
}
m = create_message(get_sequence(&(conn->ctrl_seq), &(conn->control.mutex)),
sizeof(struct hndl_list_info) + array_size,
CTRL_ID);
if(!m) {
print( ERROR, "cannot create messages" );
goto exit;
}
handlers_info = (struct hndl_list_info *) m->data;
handlers_info->hndl_code = HNDL_LIST;
handler_info = handlers_info->list;
for(h=(handler *) handlers.head; h; h=(handler *) h->next) {
handler_info->id = h->id;
handler_info->have_stdin = h->have_stdin;
handler_info->have_stdout = h->have_stdout;
strcpy(handler_info->name, h->name);
handler_info = (struct hndl_info *) (
((char *) handler_info) + sizeof(struct hndl_info) + strlen(h->name) + 1);
}
if(enqueue_message(&(conn->outcoming), m)) {
print( ERROR, "cannot enqueue message" );
dump_message(m);
free_message(m);
} else {
ret = 0;
}
exit:
return ret;
}
int
send_to_secure_channel( struct switch_info *sw_info, buffer *buf ) {
assert( sw_info != NULL );
assert( buf != NULL );
assert( buf->length > 0 );
if ( sw_info->send_queue == NULL ) {
return -1;
}
return ( enqueue_message( sw_info->send_queue, buf ) == true ) ? 0 : -1;
}
static INLINE void
remote_context_bind_rasterizer_state(struct pipe_context *_pipe,
void *state)
{
ALLOC_OUT_MESSAGE(bind_rast_state, message);
message->base.opcode = REMREQ_BIND_RAST_STATE;
message->pipe = PIPE_HANDLE(_pipe);
message->rast_handle = RAST_HANDLE(state);
enqueue_message(message);
}
static INLINE void
remote_context_destroy(struct pipe_context *_pipe)
{
ALLOC_OUT_MESSAGE(destroy_context, message);
DBG("Destroying context %u\n", PIPE_HANDLE(_pipe));
message->base.opcode = REMREQ_DESTROY_CONTEXT;
message->pipe = PIPE_HANDLE(_pipe);
enqueue_message(message);
FREE((struct remote_context*)_pipe);
}
static INLINE void
remote_context_delete_blend_state(struct pipe_context *_pipe,
void *state)
{
DBG("Delete blend state %u\n", BLEND_HANDLE(state));
ALLOC_OUT_MESSAGE(delete_blend_state, message);
message->base.opcode = REMREQ_DELETE_BLEND_STATE;
message->pipe = PIPE_HANDLE(_pipe);
message->blend_handle = BLEND_HANDLE(state);
enqueue_message(message);
}
static INLINE void
remote_context_delete_rasterizer_state(struct pipe_context *_pipe,
void *state)
{
DBG("Delete rasterizer state %u\n", RAST_HANDLE(state));
ALLOC_OUT_MESSAGE(delete_rast_state, message);
message->base.opcode = REMREQ_DELETE_RAST_STATE;
message->pipe = PIPE_HANDLE(_pipe);
message->rast_handle = RAST_HANDLE(state);
enqueue_message(message);
}
static INLINE void
remote_context_delete_sampler_state(struct pipe_context *_pipe,
void *state)
{
DBG("Delete sampler state %u\n", SAMPLER_HANDLE(state));
ALLOC_OUT_MESSAGE(delete_sampler_state, message);
message->base.opcode = REMREQ_DELETE_SAMPLER_STATE;
message->pipe = PIPE_HANDLE(_pipe);
message->sampler_handle = SAMPLER_HANDLE(state);
enqueue_message(message);
}
static INLINE void
remote_context_delete_fs_state(struct pipe_context *_pipe,
void *state)
{
DBG("Delete fragment shader %u\n", FS_HANDLE(state));
ALLOC_OUT_MESSAGE(delete_fs_state, message);
message->base.opcode = REMREQ_DELETE_FS_STATE;
message->pipe = PIPE_HANDLE(_pipe);
message->fs_handle = FS_HANDLE(state);
enqueue_message(message);
}
static INLINE void
remote_context_delete_depth_stencil_alpha_state(struct pipe_context *_pipe,
void *state)
{
DBG("Delete depth/stencil/alpha state %u\n", DSA_HANDLE(state));
ALLOC_OUT_MESSAGE(delete_dsa_state, message);
message->base.opcode = REMREQ_DELETE_DSA_STATE;
message->pipe = PIPE_HANDLE(_pipe);
message->dsa_handle = DSA_HANDLE(state);
enqueue_message(message);
}