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server : use std::move whenever possible (#12936)

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* server : use std::move whenever possible

* use r-value ref

* Apply suggestions from code review

Co-authored-by: Georgi Gerganov <ggerganov@gmail.com>

* make task creation scoped

* restore std::move

* fix task_id not set correctly

* apply changes from suggestion

Co-authored-by: ggerganov <ggerganov@gmail.com>

---------

Co-authored-by: Georgi Gerganov <ggerganov@gmail.com>
This commit is contained in:
Xuan-Son Nguyen
2025-04-18 19:58:12 +02:00
committed by GitHub
parent 8d66005763
commit 35370ba945
1 changed files with 132 additions and 113 deletions
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169
examples/server/server.cpp
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@ -1552,29 +1552,30 @@ struct server_queue {
std::condition_variable condition_tasks;
// callback functions
std::function<void(server_task)> callback_new_task;
std::function<void(server_task &&)> callback_new_task;
std::function<void(void)> callback_update_slots;
// Add a new task to the end of the queue
int post(server_task task, bool front = false) {
int post(server_task && task, bool front = false) {
std::unique_lock<std::mutex> lock(mutex_tasks);
GGML_ASSERT(task.id != -1);
// if this is cancel task make sure to clean up pending tasks
if (task.type == SERVER_TASK_TYPE_CANCEL) {
cleanup_pending_task(task.id_target);
}
QUE_DBG("new task, id = %d, front = %d\n", task.id, front);
const int task_id = task.id;
QUE_DBG("new task, id = %d, front = %d\n", task_id, front);
if (front) {
queue_tasks.push_front(std::move(task));
} else {
queue_tasks.push_back(std::move(task));
}
condition_tasks.notify_one();
return task.id;
return task_id;
}
// multi-task version of post()
int post(std::vector<server_task> & tasks, bool front = false) {
int post(std::vector<server_task> && tasks, bool front = false) {
std::unique_lock<std::mutex> lock(mutex_tasks);
for (auto & task : tasks) {
if (task.id == -1) {
@ -1596,7 +1597,7 @@ struct server_queue {
}
// Add a new task, but defer until one slot is available
void defer(server_task task) {
void defer(server_task && task) {
std::unique_lock<std::mutex> lock(mutex_tasks);
QUE_DBG("defer task, id = %d\n", task.id);
queue_tasks_deferred.push_back(std::move(task));
@ -1611,7 +1612,7 @@ struct server_queue {
}
// Register function to process a new task
void on_new_task(std::function<void(server_task)> callback) {
void on_new_task(std::function<void(server_task &&)> callback) {
callback_new_task = std::move(callback);
}
@ -1660,7 +1661,7 @@ struct server_queue {
lock.unlock();
break;
}
server_task task = queue_tasks.front();
server_task task = std::move(queue_tasks.front());
queue_tasks.pop_front();
lock.unlock();
@ -2004,7 +2005,7 @@ struct server_context {
slot.reset();
slots.push_back(slot);
slots.push_back(std::move(slot));
}
default_generation_settings_for_props = slots[0].to_json();
@ -2105,7 +2106,7 @@ struct server_context {
return true;
}
bool launch_slot_with_task(server_slot & slot, const server_task & task) {
bool launch_slot_with_task(server_slot & slot, server_task && task) {
slot.reset();
slot.id_task = task.id;
slot.index = task.index;
@ -2113,10 +2114,10 @@ struct server_context {
slot.params = std::move(task.params);
slot.prompt_tokens = std::move(task.prompt_tokens);
if (!are_lora_equal(task.params.lora, slot.lora)) {
if (!are_lora_equal(slot.params.lora, slot.lora)) {
// if lora is changed, we cannot reuse cached tokens
slot.cache_tokens.clear();
slot.lora = task.params.lora;
slot.lora = slot.params.lora;
}
bool can_detokenize = can_be_detokenized(ctx, slot.prompt_tokens);
@ -2547,10 +2548,10 @@ struct server_context {
server_task task(SERVER_TASK_TYPE_CANCEL);
task.id_target = id_task;
queue_results.remove_waiting_task_id(id_task);
cancel_tasks.push_back(task);
cancel_tasks.push_back(std::move(task));
}
// push to beginning of the queue, so it has highest priority
queue_tasks.post(cancel_tasks, true);
queue_tasks.post(std::move(cancel_tasks), true);
}
// receive the results from task(s)
@ -2637,7 +2638,7 @@ struct server_context {
// Functions to process the task
//
void process_single_task(server_task task) {
void process_single_task(server_task && task) {
switch (task.type) {
case SERVER_TASK_TYPE_COMPLETION:
case SERVER_TASK_TYPE_INFILL:
@ -2651,17 +2652,17 @@ struct server_context {
if (slot == nullptr) {
// if no slot is available, we defer this task for processing later
SRV_DBG("no slot is available, defer task, id_task = %d\n", task.id);
queue_tasks.defer(task);
queue_tasks.defer(std::move(task));
break;
}
if (slot->is_processing()) {
// if requested slot is unavailable, we defer this task for processing later
SRV_DBG("requested slot is unavailable, defer task, id_task = %d\n", task.id);
queue_tasks.defer(task);
queue_tasks.defer(std::move(task));
break;
}
if (!launch_slot_with_task(*slot, task)) {
if (!launch_slot_with_task(*slot, std::move(task))) {
SRV_ERR("failed to launch slot with task, id_task = %d\n", task.id);
break;
}
@ -2740,7 +2741,7 @@ struct server_context {
if (slot->is_processing()) {
// if requested slot is unavailable, we defer this task for processing later
SRV_DBG("requested slot is unavailable, defer task, id_task = %d\n", task.id);
queue_tasks.defer(task);
queue_tasks.defer(std::move(task));
break;
}
@ -2776,7 +2777,7 @@ struct server_context {
if (slot->is_processing()) {
// if requested slot is unavailable, we defer this task for processing later
SRV_DBG("requested slot is unavailable, defer task, id_task = %d\n", task.id);
queue_tasks.defer(task);
queue_tasks.defer(std::move(task));
break;
}
@ -2819,7 +2820,7 @@ struct server_context {
if (slot->is_processing()) {
// if requested slot is unavailable, we defer this task for processing later
SRV_DBG("requested slot is unavailable, defer task, id_task = %d\n", task.id);
queue_tasks.defer(task);
queue_tasks.defer(std::move(task));
break;
}
@ -2871,7 +2872,7 @@ struct server_context {
server_task task(SERVER_TASK_TYPE_NEXT_RESPONSE);
task.id = queue_tasks.get_new_id();
queue_tasks.post(task);
queue_tasks.post(std::move(task));
}
// apply context-shift if needed
@ -3633,14 +3634,17 @@ int main(int argc, char ** argv) {
}
// request slots data using task queue
int task_id = ctx_server.queue_tasks.get_new_id();
{
server_task task(SERVER_TASK_TYPE_METRICS);
task.id = ctx_server.queue_tasks.get_new_id();
ctx_server.queue_results.add_waiting_task_id(task.id);
ctx_server.queue_tasks.post(task, true); // high-priority task
task.id = task_id;
ctx_server.queue_results.add_waiting_task_id(task_id);
ctx_server.queue_tasks.post(std::move(task), true); // high-priority task
}
// get the result
server_task_result_ptr result = ctx_server.queue_results.recv(task.id);
ctx_server.queue_results.remove_waiting_task_id(task.id);
server_task_result_ptr result = ctx_server.queue_results.recv(task_id);
ctx_server.queue_results.remove_waiting_task_id(task_id);
if (result->is_error()) {
res_error(res, result->to_json());
@ -3669,16 +3673,17 @@ int main(int argc, char ** argv) {
}
// request slots data using task queue
int task_id = ctx_server.queue_tasks.get_new_id();
{
server_task task(SERVER_TASK_TYPE_METRICS);
task.id = ctx_server.queue_tasks.get_new_id();
task.metrics_reset_bucket = true;
ctx_server.queue_results.add_waiting_task_id(task.id);
ctx_server.queue_tasks.post(task, true); // high-priority task
task.id = task_id;
ctx_server.queue_results.add_waiting_task_id(task_id);
ctx_server.queue_tasks.post(std::move(task), true); // high-priority task
}
// get the result
server_task_result_ptr result = ctx_server.queue_results.recv(task.id);
ctx_server.queue_results.remove_waiting_task_id(task.id);
server_task_result_ptr result = ctx_server.queue_results.recv(task_id);
ctx_server.queue_results.remove_waiting_task_id(task_id);
if (result->is_error()) {
res_error(res, result->to_json());
@ -3775,17 +3780,20 @@ int main(int argc, char ** argv) {
}
std::string filepath = params.slot_save_path + filename;
int task_id = ctx_server.queue_tasks.get_new_id();
{
server_task task(SERVER_TASK_TYPE_SLOT_SAVE);
task.id = ctx_server.queue_tasks.get_new_id();
task.id = task_id;
task.slot_action.slot_id = id_slot;
task.slot_action.filename = filename;
task.slot_action.filepath = filepath;
ctx_server.queue_results.add_waiting_task_id(task.id);
ctx_server.queue_tasks.post(task);
ctx_server.queue_results.add_waiting_task_id(task_id);
ctx_server.queue_tasks.post(std::move(task));
}
server_task_result_ptr result = ctx_server.queue_results.recv(task.id);
ctx_server.queue_results.remove_waiting_task_id(task.id);
server_task_result_ptr result = ctx_server.queue_results.recv(task_id);
ctx_server.queue_results.remove_waiting_task_id(task_id);
if (result->is_error()) {
res_error(res, result->to_json());
@ -3804,17 +3812,20 @@ int main(int argc, char ** argv) {
}
std::string filepath = params.slot_save_path + filename;
int task_id = ctx_server.queue_tasks.get_new_id();
{
server_task task(SERVER_TASK_TYPE_SLOT_RESTORE);
task.id = ctx_server.queue_tasks.get_new_id();
task.id = task_id;
task.slot_action.slot_id = id_slot;
task.slot_action.filename = filename;
task.slot_action.filepath = filepath;
ctx_server.queue_results.add_waiting_task_id(task.id);
ctx_server.queue_tasks.post(task);
ctx_server.queue_results.add_waiting_task_id(task_id);
ctx_server.queue_tasks.post(std::move(task));
}
server_task_result_ptr result = ctx_server.queue_results.recv(task.id);
ctx_server.queue_results.remove_waiting_task_id(task.id);
server_task_result_ptr result = ctx_server.queue_results.recv(task_id);
ctx_server.queue_results.remove_waiting_task_id(task_id);
if (result->is_error()) {
res_error(res, result->to_json());
@ -3826,15 +3837,18 @@ int main(int argc, char ** argv) {
};
const auto handle_slots_erase = [&ctx_server, &res_error, &res_ok](const httplib::Request & /* req */, httplib::Response & res, int id_slot) {
int task_id = ctx_server.queue_tasks.get_new_id();
{
server_task task(SERVER_TASK_TYPE_SLOT_ERASE);
task.id = ctx_server.queue_tasks.get_new_id();
task.id = task_id;
task.slot_action.slot_id = id_slot;
ctx_server.queue_results.add_waiting_task_id(task.id);
ctx_server.queue_tasks.post(task);
ctx_server.queue_results.add_waiting_task_id(task_id);
ctx_server.queue_tasks.post(std::move(task));
}
server_task_result_ptr result = ctx_server.queue_results.recv(task.id);
ctx_server.queue_results.remove_waiting_task_id(task.id);
server_task_result_ptr result = ctx_server.queue_results.recv(task_id);
ctx_server.queue_results.remove_waiting_task_id(task_id);
if (result->is_error()) {
res_error(res, result->to_json());
@ -3938,9 +3952,10 @@ int main(int argc, char ** argv) {
}
auto completion_id = gen_chatcmplid();
std::unordered_set<int> task_ids;
try {
std::vector<server_task> tasks;
try {
const auto & prompt = data.at("prompt");
// TODO: this log can become very long, put it behind a flag or think about a more compact format
//SRV_DBG("Prompt: %s\n", prompt.is_string() ? prompt.get<std::string>().c_str() : prompt.dump(2).c_str());
@ -3965,18 +3980,18 @@ int main(int argc, char ** argv) {
task.params.oaicompat_cmpl_id = completion_id;
// oaicompat_model is already populated by params_from_json_cmpl
tasks.push_back(task);
tasks.push_back(std::move(task));
}
task_ids = server_task::get_list_id(tasks);
ctx_server.queue_results.add_waiting_tasks(tasks);
ctx_server.queue_tasks.post(std::move(tasks));
} catch (const std::exception & e) {
res_error(res, format_error_response(e.what(), ERROR_TYPE_INVALID_REQUEST));
return;
}
ctx_server.queue_results.add_waiting_tasks(tasks);
ctx_server.queue_tasks.post(tasks);
bool stream = json_value(data, "stream", false);
const auto task_ids = server_task::get_list_id(tasks);
if (!stream) {
ctx_server.receive_multi_results(task_ids, [&](std::vector<server_task_result_ptr> & results) {
@ -4268,6 +4283,7 @@ int main(int argc, char ** argv) {
// create and queue the task
json responses = json::array();
bool error = false;
std::unordered_set<int> task_ids;
{
std::vector<server_task> tasks;
for (size_t i = 0; i < tokenized_prompts.size(); i++) {
@ -4280,15 +4296,15 @@ int main(int argc, char ** argv) {
// OAI-compat
task.params.oaicompat = oaicompat;
tasks.push_back(task);
tasks.push_back(std::move(task));
}
task_ids = server_task::get_list_id(tasks);
ctx_server.queue_results.add_waiting_tasks(tasks);
ctx_server.queue_tasks.post(tasks);
ctx_server.queue_tasks.post(std::move(tasks));
}
// get the result
std::unordered_set<int> task_ids = server_task::get_list_id(tasks);
ctx_server.receive_multi_results(task_ids, [&](std::vector<server_task_result_ptr> & results) {
for (auto & res : results) {
GGML_ASSERT(dynamic_cast<server_task_result_embd*>(res.get()) != nullptr);
@ -4300,7 +4316,6 @@ int main(int argc, char ** argv) {
}, req.is_connection_closed);
ctx_server.queue_results.remove_waiting_task_ids(task_ids);
}
if (error) {
return;
@ -4367,6 +4382,7 @@ int main(int argc, char ** argv) {
// create and queue the task
json responses = json::array();
bool error = false;
std::unordered_set<int> task_ids;
{
std::vector<server_task> tasks;
std::vector<llama_tokens> tokenized_docs = tokenize_input_prompts(ctx_server.vocab, documents, /* add_special */ false, true);
@ -4376,14 +4392,13 @@ int main(int argc, char ** argv) {
task.id = ctx_server.queue_tasks.get_new_id();
task.index = i;
task.prompt_tokens = format_rerank(ctx_server.vocab, tokenized_query, tokenized_docs[i]);
tasks.push_back(task);
tasks.push_back(std::move(task));
}
task_ids = server_task::get_list_id(tasks);
ctx_server.queue_results.add_waiting_tasks(tasks);
ctx_server.queue_tasks.post(tasks);
// get the result
std::unordered_set<int> task_ids = server_task::get_list_id(tasks);
ctx_server.queue_tasks.post(std::move(tasks));
}
ctx_server.receive_multi_results(task_ids, [&](std::vector<server_task_result_ptr> & results) {
for (auto & res : results) {
@ -4394,7 +4409,6 @@ int main(int argc, char ** argv) {
res_error(res, error_data);
error = true;
}, req.is_connection_closed);
}
if (error) {
return;
@ -4431,14 +4445,19 @@ int main(int argc, char ** argv) {
res_error(res, format_error_response("Request body must be an array", ERROR_TYPE_INVALID_REQUEST));
return;
}
server_task task(SERVER_TASK_TYPE_SET_LORA);
task.id = ctx_server.queue_tasks.get_new_id();
task.set_lora = parse_lora_request(ctx_server.params_base.lora_adapters, body);
ctx_server.queue_results.add_waiting_task_id(task.id);
ctx_server.queue_tasks.post(task);
server_task_result_ptr result = ctx_server.queue_results.recv(task.id);
ctx_server.queue_results.remove_waiting_task_id(task.id);
int task_id = ctx_server.queue_tasks.get_new_id();
{
server_task task(SERVER_TASK_TYPE_SET_LORA);
task.id = task_id;
task.set_lora = parse_lora_request(ctx_server.params_base.lora_adapters, body);
ctx_server.queue_results.add_waiting_task_id(task_id);
ctx_server.queue_tasks.post(std::move(task));
}
// get the result
server_task_result_ptr result = ctx_server.queue_results.recv(task_id);
ctx_server.queue_results.remove_waiting_task_id(task_id);
if (result->is_error()) {
res_error(res, result->to_json());
@ -4582,8 +4601,8 @@ int main(int argc, char ** argv) {
common_chat_templates_source(ctx_server.chat_templates.get()),
common_chat_format_example(ctx_server.chat_templates.get(), ctx_server.params_base.use_jinja).c_str());
ctx_server.queue_tasks.on_new_task([&ctx_server](const server_task & task) {
ctx_server.process_single_task(task);
ctx_server.queue_tasks.on_new_task([&ctx_server](server_task && task) {
ctx_server.process_single_task(std::move(task));
});
ctx_server.queue_tasks.on_update_slots([&ctx_server]() {