void thorium_message_multiplexer_flush(struct thorium_message_multiplexer *self, int index, int force)
{
char *buffer;
struct thorium_message message;
int tag;
int count;
int current_size;
int maximum_size;
struct thorium_multiplexed_buffer *multiplexed_buffer;
int destination_node;
/*
int elapsed;
int message_count;
*/
if (CORE_BITMAP_GET_FLAG(self->flags, FLAG_DISABLED)) {
return;
}
#ifdef THORIUM_MULTIPLEXER_TRACK_BUFFERS_WITH_CONTENT
#ifdef CORE_DEBUGGER_ASSERT_ENABLED
if (!(core_set_find(&self->buffers_with_content, &index))) {
multiplexed_buffer = core_vector_at(&self->buffers, index);
thorium_printf("index %d has no content\n", index);
thorium_multiplexed_buffer_print(multiplexed_buffer);
}
#endif
CORE_DEBUGGER_ASSERT(core_set_find(&self->buffers_with_content, &index));
#endif
multiplexed_buffer = core_vector_at(&self->buffers, index);
current_size = thorium_multiplexed_buffer_current_size(multiplexed_buffer);
maximum_size = thorium_multiplexed_buffer_maximum_size(multiplexed_buffer);
/*
* The buffer was still in the timeline, but it was flushed elsewhere.
*/
if (current_size == 0) {
return;
/*
if (force == FORCE_NO && current_size < maximum_size) {
return;
} else if (force == FORCE_YES_TIME) {
elapsed = core_timer_get_nanoseconds(&self->timer) - multiplexed_buffer->timestamp_;
if (elapsed < self->timeout_in_nanoseconds) {
return;
}
} else if (force == FORCE_YES_DOA) {
message_count = multiplexed_buffer->message_count_;
if (message_count < self->degree_of_aggregation_limit) {
return;
}
*/
}
#ifdef CORE_DEBUGGER_ASSERT_ENABLED
if (current_size <= 0)
thorium_printf("current_size %d maximum_size %d\n", current_size, maximum_size);
#endif
CORE_DEBUGGER_ASSERT(current_size > 0);
buffer = thorium_multiplexed_buffer_buffer(multiplexed_buffer);
count = current_size + THORIUM_MESSAGE_METADATA_SIZE;
tag = ACTION_MULTIPLEXER_MESSAGE;
/*
* This count does not include metadata for the final big message.
*
* Avoid this copy by using an array of pointers in the first place.
*/
destination_node = index;
thorium_message_init(&message, tag, count, buffer);
thorium_message_set_destination(&message,
destination_node);
thorium_message_set_source(&message,
thorium_node_name(self->node));
/*
* Mark the message so that the buffer is eventually sent back here
* for recycling.
*/
thorium_message_set_worker(&message, thorium_worker_name(self->worker));
thorium_message_write_metadata(&message);
#ifdef DEBUG_MULTIPLEXER_FLUSH
thorium_printf("DEBUG_MULTIPLEXER thorium_message_multiplexer_flush index %d buffer %p force %d current_size %d maximum_size %d"
" destination_node %d\n",
index, buffer, force,
current_size, maximum_size,
thorium_message_destination_node(&message));
thorium_printf("message in flush\n");
thorium_multiplexed_buffer_print(multiplexed_buffer);
thorium_message_print(&message);
#endif
CORE_DEBUGGER_ASSERT_NOT_NULL(self->worker);
/*
* Make a copy of the buffer because the multiplexer does not have communication buffers.
*/
thorium_worker_enqueue_outbound_message(self->worker, &message);
/*
thorium_printf("MULTIPLEXER FLUSH\n");
*/
++self->real_message_count;
thorium_message_destroy(&message);
thorium_multiplexed_buffer_reset(multiplexed_buffer);
#ifdef THORIUM_MULTIPLEXER_TRACK_BUFFERS_WITH_CONTENT
core_set_delete(&self->buffers_with_content, &index);
#endif
}
void thorium_worker_send(struct thorium_worker *worker, struct thorium_message *message)
{
void *buffer;
int count;
void *old_buffer;
old_buffer = thorium_message_buffer(message);
/*
* Allocate a buffer if the actor provided a NULL buffer or if it
* provided its own buffer.
*/
if (old_buffer == NULL
|| old_buffer != worker->zero_copy_buffer) {
count = thorium_message_count(message);
/* use slab allocator */
buffer = thorium_worker_allocate(worker, count);
/* according to
* http://stackoverflow.com/questions/3751797/can-i-call-core_memory_copy-and-core_memory_move-with-number-of-bytes-set-to-zero
* memcpy works with a count of 0, but the addresses must be valid
* nonetheless
*
* Copy the message data.
*/
if (count > 0) {
#ifdef DISPLAY_COPY_WARNING
printf("thorium_worker: Warning, not using zero-copy path, action %x count %d source %d destination %d\n",
thorium_message_action(message), count, thorium_message_source(message),
thorium_message_destination(message));
#endif
core_memory_copy(buffer, old_buffer, count);
}
thorium_message_set_buffer(message, buffer);
}
/*
* Always write metadata.
*/
thorium_message_write_metadata(message);
#ifdef THORIUM_WORKER_DEBUG_INJECTION
++worker->counter_allocated_outbound_buffers;
#endif
#ifdef THORIUM_WORKER_DEBUG_MEMORY
printf("ALLOCATE %p\n", buffer);
#endif
#ifdef THORIUM_WORKER_DEBUG
printf("[thorium_worker_send] allocated %i bytes (%i + %i) for buffer %p\n",
all, count, metadata_size, buffer);
printf("thorium_worker_send old buffer: %p\n",
thorium_message_buffer(message));
#endif
#ifdef THORIUM_BUG_594
if (thorium_message_action(©) == 30202) {
printf("DEBUG-594 thorium_worker_send\n");
thorium_message_print(©);
}
#endif
#ifdef THORIUM_WORKER_DEBUG_20140601
if (thorium_message_action(message) == 1100) {
printf("DEBUG thorium_worker_send 1100\n");
}
#endif
/* if the destination is on the same node,
* handle that directly here to avoid locking things
* with the node.
*/
thorium_worker_enqueue_message(worker, message);
worker->zero_copy_buffer = NULL;
}
