/
heter_server.h
executable file
·651 lines (558 loc) · 22.2 KB
/
heter_server.h
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
/* Copyright (c) 2018 PaddlePaddle Authors. All Rights Reserved.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License. */
#pragma once
#include <atomic>
#include <ctime>
#include <map>
#include <memory>
#include <random>
#include <string>
#include <unordered_map>
#include <unordered_set>
#include <vector>
#include "brpc/channel.h"
#include "brpc/controller.h"
#include "brpc/server.h"
#include "paddle/fluid/distributed/ps/service/brpc_utils.h"
#include "paddle/fluid/distributed/ps/service/heter_client.h"
#include "paddle/fluid/distributed/ps/service/sendrecv.pb.h"
#include "paddle/fluid/distributed/ps/table/depends/feature_value.h"
#include "paddle/fluid/framework/blocking_queue.h"
#include "paddle/fluid/framework/executor.h"
#include "paddle/fluid/framework/program_desc.h"
#include "paddle/fluid/framework/scope.h"
#include "paddle/fluid/framework/tensor.h"
#include "paddle/fluid/framework/variable_helper.h"
#include "paddle/fluid/platform/macros.h" // for DISABLE_COPY_AND_ASSIGN
#include "paddle/fluid/platform/profiler.h"
namespace google {
namespace protobuf {
class Closure;
class RpcController;
} // namespace protobuf
} // namespace google
namespace paddle {
namespace framework {
class Executor;
class ProgramDesc;
class Scope;
} // namespace framework
} // namespace paddle
DECLARE_double(eager_delete_tensor_gb);
DECLARE_int32(pserver_timeout_ms);
DECLARE_int32(heter_world_size);
DECLARE_int32(switch_send_recv_timeout_s);
namespace paddle {
namespace distributed {
using MultiVarMsg = MultiVariableMessage;
using VarMsg = VariableMessage;
using serviceHandler = std::function<int32_t(
const PsRequestMessage& request, PsResponseMessage& response, // NOLINT
brpc::Controller* cntl)>;
using HeterServiceHandler =
std::function<int32_t(const MultiVarMsg*, MultiVarMsg*, brpc::Controller*)>;
using HeterRpcCallbackFunc = std::function<void(void*)>;
class ServiceHandlerBase {
public:
ServiceHandlerBase() : dev_ctx_(nullptr), scope_(nullptr) {}
virtual ~ServiceHandlerBase() {}
void SetScope(const framework::Scope* scope) { scope_ = scope; }
void SetDevCtx(const platform::DeviceContext* dev_ctx) { dev_ctx_ = dev_ctx; }
virtual int Handle(const MultiVarMsg* request, MultiVarMsg* response,
brpc::Controller* cntl) = 0;
protected:
const platform::DeviceContext* dev_ctx_;
const framework::Scope* scope_;
};
using SharedMiniScope =
std::shared_ptr<std::unordered_map<int, ::paddle::framework::Scope*>>;
using SharedMicroScope = std::shared_ptr<std::unordered_map<
int, std::shared_ptr<std::vector<::paddle::framework::Scope*>>>>;
using SharedTaskQueue = std::shared_ptr<
std::unordered_map<int, std::shared_ptr<::paddle::framework::BlockingQueue<
std::pair<std::string, int>>>>>;
class ValueInSwitch {
public:
ValueInSwitch() {}
~ValueInSwitch() {}
char* data() { return _data.data(); }
size_t size() { return _data.size(); }
void resize(size_t size) { _data.resize(size); }
void shrink_to_fit() { _data.shrink_to_fit(); }
private:
std::vector<char> _data;
};
class SendAndRecvVariableHandler final : public ServiceHandlerBase {
public:
SendAndRecvVariableHandler() {
this->num_microbatch_ = 0;
this->num_minibatch_ = 0;
_local_shards.reset(new shard_type[FLAGS_heter_world_size]);
}
virtual ~SendAndRecvVariableHandler() {}
void SetMiniScopes(SharedMiniScope mini_scopes) {
mini_scopes_ = mini_scopes;
num_minibatch_ = mini_scopes_->size();
}
void SetMicroScopes(SharedMicroScope micro_scopes) {
micro_scopes_ = micro_scopes;
for (auto& scope_pair : (*micro_scopes_)) {
// auto mini_idx = scope_pair.first;
auto& micro_scopes = scope_pair.second;
num_microbatch_ = micro_scopes->size();
break;
}
}
int GetThreadNum() {
std::unique_lock<std::mutex> lk(scope_mutex_);
return (*task_queue_).size();
}
int SaveInSwitchWithScope(const MultiVarMsg* request,
PsResponseMessage* response,
brpc::Controller* cntl);
void WaitForVarsConsumed(int32_t group_id, const std::string& var_name) {
// timeline_.Start();
while (true) {
{
std::lock_guard<std::mutex> lock(scope_mutex_);
if (vars_ready_flag[group_id][var_name] == 0) {
break;
}
}
/*
timeline_.Pause();
if (timeline_.ElapsedSec() > FLAGS_switch_send_recv_timeout_s) {
VLOG(0) << "vars not consumed exceed 10 miniutes";
break;
}
*/
}
return;
}
void WaitForVarsProduced(int32_t group_id, const std::string& var_name) {
// timeline_.Start();
while (true) {
{
std::lock_guard<std::mutex> lock(scope_mutex_);
if (vars_ready_flag[group_id][var_name] == 1) {
break;
}
}
/*
timeline_.Pause();
if (timeline_.ElapsedSec() > FLAGS_switch_send_recv_timeout_s) {
VLOG(0) << "vars not produced exceed 10 miniutes";
break;
}
*/
}
return;
}
int SaveInSwitchWithShard(const MultiVarMsg* request,
PsResponseMessage* response,
brpc::Controller* cntl);
int QueryInSwitchWithShard(const MultiVarMsg* request, MultiVarMsg* response,
brpc::Controller* cntl);
int QueryInSwitchWithScope(const MultiVarMsg* request, MultiVarMsg* response,
brpc::Controller* cntl);
void SetTaskQueue(SharedTaskQueue task_queue) { task_queue_ = task_queue; }
int Handle(const MultiVarMsg* request, MultiVarMsg* response,
brpc::Controller* cntl) override {
LOG(INFO) << "entered Handle";
platform::RecordEvent record_event("SendAndRecvVariableHandler->Handle",
platform::TracerEventType::Communication,
1);
FLAGS_eager_delete_tensor_gb = -1;
// get microID from request
// deserialize variable to micro scope
// Push to heter worker's task_queue
std::unique_ptr<paddle::framework::Scope> local_scope_ptr(
new paddle::framework::Scope());
auto& local_scope = *(local_scope_ptr.get());
platform::DeviceContextPool& pool = platform::DeviceContextPool::Instance();
platform::CPUPlace cpu_place;
auto& cpu_dev_ctx = *pool.Get(cpu_place);
auto message_name = request->message_name();
auto& request_io_buffer = cntl->request_attachment();
distributed::DeserializeFromMultiVarMsgAndIOBuf(
*request, &request_io_buffer, cpu_dev_ctx, &local_scope);
auto* var = local_scope.FindVar("microbatch_id");
PADDLE_ENFORCE_NE(var, nullptr,
platform::errors::InvalidArgument(
"Not find variable microbatch_id in scope."));
auto* tensor = var->GetMutable<framework::LoDTensor>();
auto data = reinterpret_cast<const float*>(tensor->data());
auto micro_id = static_cast<int>(data[0]);
int minibatch_index = micro_id / 10;
int microbatch_index = micro_id % 10;
// check minibatch_index is in mini_scopes_
std::unique_lock<std::mutex> lk(scope_mutex_);
if ((*mini_scopes_).find(minibatch_index) != (*mini_scopes_).end()) {
lk.unlock();
PADDLE_ENFORCE_EQ(
(*micro_scopes_).find(minibatch_index) != (*micro_scopes_).end(), 1,
platform::errors::InvalidArgument(
"minibatch index should in current trainer"));
} else {
// create mini scope & micro scopes
auto* minibatch_scope = &(scope_->NewScope());
(*mini_scopes_)[minibatch_index] = minibatch_scope;
(*micro_scopes_)[minibatch_index].reset(
new std::vector<paddle::framework::Scope*>{});
for (int i = 0; i < num_microbatch_; i++) {
auto* micro_scope = &(minibatch_scope->NewScope());
(*((*micro_scopes_)[minibatch_index])).push_back(micro_scope);
}
(*task_queue_)[minibatch_index].reset(
new ::paddle::framework::BlockingQueue<
std::pair<std::string, int>>());
lk.unlock();
}
auto* micro_scope =
(*((*micro_scopes_)[minibatch_index]))[microbatch_index];
distributed::DeserializeFromMultiVarMsgAndIOBuf(
*request, &request_io_buffer, *dev_ctx_, micro_scope);
// blocking queue handles multi thread
(*task_queue_)[minibatch_index]->Push(
std::make_pair(message_name, microbatch_index));
auto response_var_nums = request->recv_var_names_size();
std::vector<std::string> response_var_names(response_var_nums),
empty_var_names{};
for (int var_idx = 0; var_idx < response_var_nums; ++var_idx) {
response_var_names[var_idx] = request->recv_var_names(var_idx);
}
auto& response_io_buffer = cntl->response_attachment();
distributed::SerializeToMultiVarMsgAndIOBuf(
message_name, response_var_names, empty_var_names, *dev_ctx_,
&local_scope, response, &response_io_buffer);
return 0;
}
public:
using shard_type = SparseTableShard<std::string, ValueInSwitch>;
std::shared_ptr<paddle::framework::Scope> local_scope_ptr; // for switch
std::unordered_map<uint32_t, std::unordered_map<std::string, uint32_t>>
vars_ready_flag;
std::unique_ptr<shard_type[]> _local_shards;
platform::Timer timeline_;
private:
// share with HeterPipelineTrainer
SharedMiniScope mini_scopes_{nullptr};
SharedMicroScope micro_scopes_{nullptr};
int num_microbatch_;
int num_minibatch_;
std::mutex scope_mutex_;
bool is_first_stage_ = false;
bool is_last_stage_ = false;
SharedTaskQueue task_queue_;
};
class HeterService : public PsService {
public:
HeterService() {
_service_handler_map[PS_STOP_SERVER] =
std::bind(&HeterService::stop_heter_worker, this, std::placeholders::_1,
std::placeholders::_2, std::placeholders::_3);
_service_handler_map[PS_START_PROFILER] =
std::bind(&HeterService::start_profiler, this, std::placeholders::_1,
std::placeholders::_2, std::placeholders::_3);
_service_handler_map[PS_STOP_PROFILER] =
std::bind(&HeterService::stop_profiler, this, std::placeholders::_1,
std::placeholders::_2, std::placeholders::_3);
service_handler_.local_scope_ptr =
std::make_shared<paddle::framework::Scope>();
}
virtual ~HeterService() {}
virtual void service(::google::protobuf::RpcController* controller,
const PsRequestMessage* request,
PsResponseMessage* response,
::google::protobuf::Closure* done) {
brpc::ClosureGuard done_guard(done);
response->set_err_code(0);
response->set_err_msg("");
brpc::Controller* cntl = static_cast<brpc::Controller*>(controller);
auto itr = _service_handler_map.find(request->cmd_id());
if (itr == _service_handler_map.end()) {
std::string err_msg(
"undefined cmd_id, should match PsCmdID in ps.proto, cmd_id:");
err_msg.append(std::to_string(request->cmd_id()));
return;
}
serviceHandler handler = itr->second;
int service_ret = handler(*request, *response, cntl);
VLOG(4) << "handler in service ret: " << service_ret;
if (service_ret != 0) {
response->set_err_code(service_ret);
response->set_err_msg("server internal error");
}
}
virtual void SendAndRecvVariable(
::google::protobuf::RpcController* controller, const MultiVarMsg* request,
MultiVarMsg* response, ::google::protobuf::Closure* done) {
// This object helps you to call done->Run() in RAII style. If you need
// to process the request asynchronously, pass done_guard.release().
brpc::ClosureGuard done_guard(done);
std::string message_name = request->message_name();
VLOG(0) << "SendAndRecvVariable message_name: " << message_name;
auto itr = handler_map_.find(message_name);
brpc::Controller* cntl = static_cast<brpc::Controller*>(controller);
LOG(INFO) << "SendAndRecvVariable(client addr) =" << cntl->remote_side();
PADDLE_ENFORCE_NE(
itr, handler_map_.end(),
platform::errors::InvalidArgument(
"HeterService::SendAndRecvVariable Get illegal message_name: %s "
"which is not in HeterService::handler_map_",
message_name));
itr->second(request, response, cntl);
// We don't want to call done->Run() here, release the guard.
// done_guard.release();
}
virtual void RecvFromSwitch(::google::protobuf::RpcController* controller,
const MultiVarMsg* request, MultiVarMsg* response,
::google::protobuf::Closure* done) {
brpc::ClosureGuard done_guard(done);
brpc::Controller* cntl = static_cast<brpc::Controller*>(controller);
// int ret = service_handler_.QueryInSwitchWithScope(request, response,
// cntl);
int ret = service_handler_.QueryInSwitchWithShard(request, response, cntl);
// std::string message_name = request->message_name();
// auto itr = handler_map_.find(message_name);
// int ret = itr->second(request, response, cntl);
if (ret != 0) {
LOG(ERROR) << "QueryInSwitchWithScope failed!";
}
// response->set_message_name(message_name);
}
virtual void SendToSwitch(::google::protobuf::RpcController* controller,
const MultiVarMsg* request,
PsResponseMessage* response,
::google::protobuf::Closure* done) {
VLOG(4) << "entering SendToSwitch";
brpc::ClosureGuard done_guard(done);
std::shared_ptr<HeterClient> switch_client_ptr_ =
HeterClient::GetSwitchInstance(peer_endpoints_, PEER_ROLE_IS_SWITCH);
if (switch_client_ptr_->peer_switch_channels_.empty()) {
LOG(ERROR) << "switch_client_ptr_->peer_switch_channels_ null";
}
brpc::Channel* channel = switch_client_ptr_->peer_switch_channels_[0].get();
brpc::Controller* cntl = static_cast<brpc::Controller*>(controller);
// proxy: 定义新的 OnHeterRpcDone 对象(或者在类 OnHeterRpcDone 中 reset)
OnHeterRpcDone* closure2 = new OnHeterRpcDone([](void* done) {
auto* closure = reinterpret_cast<OnHeterRpcDone*>(done);
int ret = closure->CheckResponse();
closure->set_promise_value(ret);
if (closure->cntl.Failed()) {
PADDLE_ENFORCE_NE(
closure->cntl.Failed(), true,
platform::errors::Unimplemented(
"HeterClient::SendS2S meets brpc error, error message is %s",
closure->cntl.ErrorText()));
}
});
auto& std_cntl = closure2->cntl;
std_cntl.set_timeout_ms(FLAGS_pserver_timeout_ms);
std_cntl.request_attachment().append(cntl->request_attachment().movable());
auto promise = std::make_shared<std::promise<int32_t>>();
closure2->add_promise(promise);
std::future<int> fut = promise->get_future();
// brpc::Controller std_cntl;
// std_cntl.request_attachment().append(cntl->request_attachment().movable());
PsService_Stub stub(channel);
stub.SendS2S(&std_cntl, request, response, closure2);
cntl->response_attachment().append(
std_cntl.response_attachment().movable());
fut.wait();
VLOG(4) << "SendToSwitch done";
delete closure2;
}
void SendS2S(::google::protobuf::RpcController* controller,
const MultiVarMsg* request, PsResponseMessage* response,
::google::protobuf::Closure* done) {
VLOG(4) << "entering SendS2S";
brpc::ClosureGuard done_guard(done);
brpc::Controller* cntl = static_cast<brpc::Controller*>(controller);
// int ret = service_handler_.SaveInSwitchWithScope(request, response,
// cntl);
int ret = service_handler_.SaveInSwitchWithShard(request, response, cntl);
// std::string message_name = request->message_name();
// auto itr = handler_map_.find(message_name);
// if (itr == handler_map_.end()) {
// LOG(ERROR) << "can not find func handler";
//}
// int ret = itr->second(request, response, cntl);
if (ret != 0) {
LOG(ERROR) << "SaveInSwitchWithScope failed";
}
std::string err_msg = "ok";
response->set_err_msg(err_msg.c_str());
response->set_err_code(ret);
VLOG(4) << "heter server SendS2S done";
}
void SendToWorker(::google::protobuf::RpcController* controller,
const MultiVarMsg* request, PsResponseMessage* response,
::google::protobuf::Closure* done) {
brpc::ClosureGuard done_guard(done);
brpc::Controller* cntl = static_cast<brpc::Controller*>(controller);
VLOG(4) << "SendToWorker(client addr) =" << cntl->remote_side();
std::shared_ptr<distributed::HeterClient> switch_client_ptr_ =
HeterClient::GetSwitchInstance(peer_endpoints_, PEER_ROLE_IS_WORKER);
VLOG(4) << "in switch client, peer worker 0: "
<< switch_client_ptr_->peer_worker_list_[0];
brpc::Channel* channel = switch_client_ptr_->peer_worker_channels_[0].get();
auto* closure = reinterpret_cast<OnHeterRpcDone*>(done);
PsService_Stub stub(channel);
stub.SendAndRecvVariable(controller, request, &closure->response, done);
// fill response content
std::string err_msg("pass to worker");
response->set_err_msg(err_msg.c_str());
response->set_err_code(0);
}
void RegisterServiceHandler(std::string message_name,
HeterServiceHandler func) {
handler_map_[message_name] = func;
}
void SetEndpoint(const std::string& end_point) { endpoint_ = end_point; }
void SetInterEndpoint(const std::string& end_point) {
endpoint_inter_ = end_point;
}
void SetPeerEndPoints(const std::vector<std::string>& peer_endpoints) {
peer_endpoints_ = peer_endpoints;
}
void SetFanin(const int& fan_in) { fan_in_ = fan_in; }
void ForceExit() {
VLOG(3) << "heter service force exit";
is_exit_ = true;
return;
}
bool IsExit() { return is_exit_; }
private:
int32_t stop_profiler(const PsRequestMessage& request,
PsResponseMessage& response, // NOLINT
brpc::Controller* cntl) {
platform::DisableProfiler(
platform::EventSortingKey::kDefault,
string::Sprintf("heter_worker_%s_profile", endpoint_));
return 0;
}
int32_t start_profiler(const PsRequestMessage& request,
PsResponseMessage& response, // NOLINT
brpc::Controller* cntl) {
platform::EnableProfiler(platform::ProfilerState::kAll);
return 0;
}
int32_t stop_heter_worker(const PsRequestMessage& request,
PsResponseMessage& response, // NOLINT
brpc::Controller* cntl) {
auto client_id = request.client_id();
stop_cpu_worker_set_.insert(client_id);
if (stop_cpu_worker_set_.size() == fan_in_) {
is_exit_ = true;
}
return 0;
}
private:
SendAndRecvVariableHandler service_handler_;
std::string endpoint_;
std::string endpoint_inter_;
// for switch
std::vector<std::string> peer_endpoints_;
std::unordered_map<int32_t, serviceHandler> _service_handler_map;
std::unordered_map<std::string, HeterServiceHandler> handler_map_;
std::unordered_set<int> stop_cpu_worker_set_;
uint32_t fan_in_;
bool is_exit_ = false;
};
class HeterServer {
public:
HeterServer() : ready_(0) {}
virtual ~HeterServer() {}
void Stop() {
std::unique_lock<std::mutex> lock(mutex_);
if (stoped_ == true) return;
if (!IsExit()) {
service_.ForceExit();
}
stoped_ = true;
cv_.notify_all();
server_.Stop(1000);
server_.Join();
}
bool IsStop() {
std::unique_lock<std::mutex> lock(mutex_);
return stoped_;
}
bool IsExit() { return service_.IsExit(); }
void RegisterServiceHandler(std::string message_name,
HeterServiceHandler func);
void StartHeterService(bool need_encrypt = false);
void StartHeterInterService(bool need_encrypt = false);
void SetEndPoint(const std::string& endpoint) {
this->endpoint_ = endpoint;
service_.SetEndpoint(endpoint);
}
void SetLocalScope() {
request_handler_->local_scope_ptr =
std::make_shared<paddle::framework::Scope>();
}
void SetInterEndpoint(const std::string& endpoint) {
this->endpoint_inter_ = endpoint;
service_.SetInterEndpoint(endpoint);
}
void SetPeerEndPoints(const std::vector<std::string>& peer_endpoints) {
this->peer_endpoints_ = peer_endpoints;
service_.SetPeerEndPoints(peer_endpoints);
}
void SetFanin(const int& fan_in);
void SetServiceHandler(
std::shared_ptr<SendAndRecvVariableHandler> request_handler) {
request_handler_ = request_handler;
}
void SetMiniBatchScopes(SharedMiniScope mini_scopes) {
request_handler_->SetMiniScopes(mini_scopes);
}
void SetMicroBatchScopes(SharedMicroScope micro_scopes) {
request_handler_->SetMicroScopes(micro_scopes);
}
int GetThreadNum() { return request_handler_->GetThreadNum(); }
void SetTaskQueue(SharedTaskQueue task_queue) {
request_handler_->SetTaskQueue(task_queue);
}
// HeterWrapper singleton
static std::shared_ptr<HeterServer> GetInstance() {
if (s_instance_ == nullptr) {
std::unique_lock<std::mutex> lock(mtx_);
if (NULL == s_instance_) {
s_instance_.reset(new HeterServer());
}
}
return s_instance_;
}
void WaitServerReady();
private:
static std::shared_ptr<HeterServer> s_instance_;
mutable std::mutex mutex_;
static std::mutex mtx_;
std::condition_variable cv_;
std::condition_variable condition_ready_;
bool stoped_ = true;
std::string endpoint_;
std::string endpoint_inter_;
// for switch
std::vector<std::string> peer_endpoints_;
protected:
brpc::Server server_;
brpc::Server server_inter_;
HeterService service_;
std::shared_ptr<SendAndRecvVariableHandler> request_handler_;
DISABLE_COPY_AND_ASSIGN(HeterServer);
std::mutex mutex_ready_;
int ready_;
};
} // end namespace distributed
} // end namespace paddle