Woo hoo! That fixed it! Thanks Sree.
Cheers,
-RK
On Thursday, November 17, 2016 at 2:58:59 PM UTC-5, Sree Kuchibhotla wrote:
>
>
> Looks like you are doing two async operations together in your server: (in
> calldata when status == PROCESS)
>
> * responder_.Write (reply_, this);*
> * responder_.Finish(grpc::Status::OK, this);*
>
> Instead try one operation at a time..For example, add a new state (for
> example: DESTROY) and you can modify the CallData's Process() function the
> following way:
>
> enum CallStatus { CREATE, PROCESS, FINISH, DESTROY };
>
> void Proceed() {
> if (status_ == CREATE) {
> status_ = PROCESS;
> service_->RequestSayHello(&ctx_, &request_, &responder_, cq_,
> cq_, this);
> } else if (status_ == PROCESS) {
> new CallData(service_, cq_);
> reply_.set_reply("hello " + request_.message());
> responder_.Write (reply_, this); // Do only Write here. Not
> Finish
> status_ = FINISH;
> } else if (status_ == FINISH) {
> responder_.Finish(grpc::Status::OK, this); // Do Finish
> here.. Not 'delete this'
> status_ = DESTROY
> } else {
> GPR_ASSERT(status_ == *DESTROY*);
> delete this;
> }
> }
>
> Let me know if that works.
>
> thanks,
> Sree
>
> On Thursday, November 17, 2016 at 6:23:25 AM UTC-8, [email protected]
> wrote:
>>
>>
>> OK, tracked it down to
>> grpc-1.0.0/include/grpc++/impl/codegen/completion_queue_tag.h -- the pure
>> virtual function "bool FinalizeResult()" -- what do I need to do to
>> initialize it that I'm not doing in the program above? (As a hack, I just
>> had it print a message to stdout and return "false", now the program
>> doesn't give the "pure virtual method" error, but obviously isn't working
>> completely as intended)
>>
>> On Wednesday, November 16, 2016 at 9:12:43 AM UTC-5, [email protected]
>> wrote:
>>>
>>> Sadly, I'm still stuck. I don't know enough C++ to be able to diagnose
>>> this further... :-(
>>>
>>> On Tuesday, November 15, 2016 at 2:01:50 PM UTC-5, [email protected]
>>> wrote:
>>>>
>>>> Ok:
>>>>
>>>> *(gdb) handle SIG36 noprint*
>>>> *Signal Stop Print Pass to program Description*
>>>> *SIG36 No No Yes Real-time event 36*
>>>> *(gdb) run*
>>>> *Starting program: /.../minfail*
>>>> *[Thread debugging using libthread_db enabled]*
>>>> *D1115 13:59:40.187940393 34391 env_linux.c:77] Warning:
>>>> insecure environment read function 'getenv' used*
>>>> *[New Thread 0x7ffff6fcc700 (LWP 34394)]*
>>>> *[New Thread 0x7ffff65cb700 (LWP 34395)]*
>>>> *[New Thread 0x7ffff5bca700 (LWP 34396)]*
>>>> *[New Thread 0x7ffff51c9700 (LWP 34397)]*
>>>> *[New Thread 0x7ffff47c8700 (LWP 34398)]*
>>>> *[New Thread 0x7ffff3dc7700 (LWP 34399)]*
>>>> *[New Thread 0x7ffff33c6700 (LWP 34400)]*
>>>> *[New Thread 0x7ffff29c5700 (LWP 34401)]*
>>>> *[New Thread 0x7ffff1fc4700 (LWP 34402)]*
>>>> *[New Thread 0x7ffff15c3700 (LWP 34403)]*
>>>> *[New Thread 0x7ffff0bc2700 (LWP 34404)]*
>>>> *[New Thread 0x7ffff01c1700 (LWP 34405)]*
>>>> *[New Thread 0x7fffef7c0700 (LWP 34406)]*
>>>> *[New Thread 0x7fffeedbf700 (LWP 34407)]*
>>>> *[New Thread 0x7fffee3be700 (LWP 34408)]*
>>>> *[New Thread 0x7fffed9bd700 (LWP 34409)]*
>>>> *pure virtual method called*
>>>> *terminate called without an active exception*
>>>>
>>>> *Program received signal SIGABRT, Aborted.*
>>>> *0x00000035ce0325e5 in raise () from /lib64/libc.so.6*
>>>> *(gdb) bt*
>>>> *#0 0x00000035ce0325e5 in raise () from /lib64/libc.so.6*
>>>> *#1 0x00000035ce033dc5 in abort () from /lib64/libc.so.6*
>>>> *#2 0x00000035d4cbea7d in __gnu_cxx::__verbose_terminate_handler() ()
>>>> from /usr/lib64/libstdc++.so.6*
>>>> *#3 0x00000035d4cbcbd6 in ?? () from /usr/lib64/libstdc++.so.6*
>>>> *#4 0x00000035d4cbcc03 in std::terminate() () from
>>>> /usr/lib64/libstdc++.so.6*
>>>> *#5 0x00000035d4cbd55f in __cxa_pure_virtual () from
>>>> /usr/lib64/libstdc++.so.6*
>>>> *#6 0x00007ffff76e3f7a in
>>>> grpc::CompletionQueue::AsyncNextInternal(void**, bool*, gpr_timespec) ()
>>>> from /.../lib/libgrpc++.so.1*
>>>> *#7 0x000000000040919f in grpc::CompletionQueue::Next
>>>> [_ZN4grpc15Completion...] (this=0x628fa0, tag=0x7fffffffe1e8,
>>>> ok=0x7fffffffe1e7) at
>>>> .../include/grpc++/impl/codegen/completion_queue.h:148*
>>>> *#8 0x00000000004085ca in main [main] (argc=1, argv=0x7fffffffe3a8) at
>>>> minfail.cc:95*
>>>> *(gdb)*
>>>>
>>>>
>>>> On Tuesday, November 15, 2016 at 1:55:48 PM UTC-5, Craig Tiller wrote:
>>>>>
>>>>> You probably want to first do 'handle SIG36 noprint' to let gdb pass
>>>>> the (totally legitimate) signal to the application.
>>>>>
>>>>> On Tue, Nov 15, 2016 at 8:56 AM <[email protected]> wrote:
>>>>>
>>>>>>
>>>>>> Hi all,
>>>>>>
>>>>>> I've created a tiny code sample that is based off the hello world
>>>>>> async greeter example. I keep getting a "pure virtual method called" in
>>>>>> the
>>>>>> grpc_completion_queue_next() function, and I'm having a hard time
>>>>>> understanding why. What am I doing wrong?
>>>>>>
>>>>>> I've included the proto file, C++ code and gdb output... (the program
>>>>>> is both a client or a server, if you give it a command line value of "c"
>>>>>> it
>>>>>> acts as a client).
>>>>>>
>>>>>> Thanks in advance!
>>>>>>
>>>>>> PROTO FILE
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>> *syntax = "proto3";package helloworld;service Greeter{ rpc
>>>>>> SayHello (HelloRequest) returns (stream HelloReply) {}}message
>>>>>> HelloRequest{ string message = 1;}message HelloReply{ string
>>>>>> reply
>>>>>> = 1;}*
>>>>>>
>>>>>>
>>>>>> C++ CODE
>>>>>>
>>>>>> *#include <iostream>*
>>>>>> *#include <string>*
>>>>>> *#include <grpc++/grpc++.h>*
>>>>>> *#include "minfail.grpc.pb.h"*
>>>>>>
>>>>>> *using namespace std;*
>>>>>> *using namespace helloworld;*
>>>>>>
>>>>>> *class CallData {*
>>>>>> *public:*
>>>>>> * CallData(Greeter::AsyncService* service,
>>>>>> grpc::ServerCompletionQueue* cq) : service_(service), cq_(cq),
>>>>>> responder_(&ctx_), status_(CREATE) {*
>>>>>> * Proceed();*
>>>>>> * }*
>>>>>>
>>>>>> * void Proceed() {*
>>>>>> * if (status_ == CREATE) {*
>>>>>> * status_ = PROCESS;*
>>>>>> * service_->RequestSayHello(&ctx_, &request_, &responder_,
>>>>>> cq_, cq_, this);*
>>>>>> * } else if (status_ == PROCESS) {*
>>>>>> * new CallData(service_, cq_);*
>>>>>> * reply_.set_reply("hello " + request_.message());*
>>>>>> * responder_.Write (reply_, this);*
>>>>>> * responder_.Finish(grpc::Status::OK, this);*
>>>>>> * status_ = FINISH;*
>>>>>> * } else {*
>>>>>> * GPR_ASSERT(status_ == FINISH);*
>>>>>> * delete this;*
>>>>>> * }*
>>>>>> * }*
>>>>>>
>>>>>> *private:*
>>>>>> * HelloRequest request_;*
>>>>>> * HelloReply reply_;*
>>>>>> * grpc::ServerAsyncWriter<HelloReply> responder_;*
>>>>>>
>>>>>> * enum CallStatus { CREATE, PROCESS, FINISH };*
>>>>>> * CallStatus status_;*
>>>>>> * grpc::ServerContext ctx_;*
>>>>>> * grpc::ServerCompletionQueue* cq_;*
>>>>>> * Greeter::AsyncService* service_;*
>>>>>> *};*
>>>>>>
>>>>>> *class GreeterClient*
>>>>>> *{*
>>>>>> *public:*
>>>>>> * GreeterClient (shared_ptr <grpc::Channel> channel)*
>>>>>> * : stub_ (Greeter::NewStub (channel)) {}*
>>>>>> * string*
>>>>>> * SayHello (const string &user) {*
>>>>>> * HelloRequest request;*
>>>>>> * request.set_message (user);*
>>>>>> * grpc::ClientContext context;*
>>>>>> * unique_ptr <grpc::ClientReader <HelloReply>> reader
>>>>>> (stub_->SayHello (&context, request));*
>>>>>> * HelloReply reply;*
>>>>>> * while (reader -> Read (&reply)) {*
>>>>>> * cout << "SayHello returns " << reply.reply() << "\n";*
>>>>>> * }*
>>>>>> * grpc::Status status = reader -> Finish();*
>>>>>> * if (status.ok()) {*
>>>>>> * return (reply.reply());*
>>>>>> * }*
>>>>>> * return ("<RPC failed>");*
>>>>>> * }*
>>>>>>
>>>>>> *private:*
>>>>>> * unique_ptr<Greeter::Stub> stub_;*
>>>>>> *};*
>>>>>>
>>>>>> *int*
>>>>>> *main (int argc, char **argv)*
>>>>>> *{*
>>>>>> * string server_address ("0.0.0.0:50051 <http://0.0.0.0:50051>");*
>>>>>>
>>>>>> * if (argc == 2 && argv [1][0] == 'c') {*
>>>>>> * GreeterClient greeter(grpc::CreateChannel (server_address,
>>>>>> grpc::InsecureChannelCredentials()));*
>>>>>> * cout << "Sending world...\n";*
>>>>>> * cout << "Response is " << greeter.SayHello ("world") <<
>>>>>> "\n";*
>>>>>> * } else {*
>>>>>> * unique_ptr<grpc::ServerCompletionQueue> cq;*
>>>>>> * Greeter::AsyncService service;*
>>>>>> * unique_ptr<grpc::Server> server;*
>>>>>>
>>>>>> * grpc::ServerBuilder builder;*
>>>>>>
>>>>>> * builder.AddListeningPort(server_address,
>>>>>> grpc::InsecureServerCredentials());*
>>>>>> * builder.RegisterService(&service);*
>>>>>> * cq = builder.AddCompletionQueue();*
>>>>>> * server = builder.BuildAndStart();*
>>>>>>
>>>>>> * new CallData(&service, cq.get());*
>>>>>> * CallData* tag; // uniquely identifies a request.*
>>>>>> * bool ok;*
>>>>>> * while (true) {*
>>>>>> * GPR_ASSERT(cq->Next((void **)&tag, &ok));*
>>>>>> * GPR_ASSERT(ok);*
>>>>>> * tag->Proceed();*
>>>>>> * }*
>>>>>>
>>>>>> * server->Shutdown();*
>>>>>> * cq->Shutdown();*
>>>>>> * }*
>>>>>> *}*
>>>>>>
>>>>>> and run / GDB output:
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>> *$ ./minfailD1115 11:45:47.919769500 24264
>>>>>> env_linux.c:77] Warning: insecure environment read function
>>>>>> 'getenv' usedpure virtual method calledterminate called without an
>>>>>> active
>>>>>> exceptionAborted (core dumped)*
>>>>>>
>>>>>> *$ gdb ./minfail*
>>>>>> *... elided ...*
>>>>>> *Program received signal SIG36, Real-time event 36.*
>>>>>> *0x00000035ce0e8cec in epoll_pwait () from /lib64/libc.so.6*
>>>>>> *(gdb) bt*
>>>>>> *#0 0x00000035ce0e8cec in epoll_pwait () from /lib64/libc.so.6*
>>>>>> *#1 0x00007ffff76f8d4a in ?? () from /.../lib/libgrpc++.so.1*
>>>>>> *#2 0x00007ffff76f91a6 in ?? () from /.../lib/libgrpc++.so.1*
>>>>>> *#3 0x00007ffff770d61b in grpc_completion_queue_next () from
>>>>>> /.../lib/libgrpc++.so.1*
>>>>>> *#4 0x00007ffff76e3f20 in
>>>>>> grpc::CompletionQueue::AsyncNextInternal(void**, bool*, gpr_timespec) ()
>>>>>> from /.../lib/libgrpc++.so.1*
>>>>>> *#5 0x000000000040919f in grpc::CompletionQueue::Next
>>>>>> [_ZN4grpc15Completion...] (this=0x628fa0, tag=0x7fffffffe1e8,
>>>>>> ok=0x7fffffffe1e7) at
>>>>>> .../include/grpc++/impl/codegen/completion_queue.h:148*
>>>>>> *#6 0x00000000004085ca in main [main] (argc=1, argv=0x7fffffffe3a8)
>>>>>> at minfail.cc:95*
>>>>>> *(gdb)*
>>>>>>
>>>>>> Any help greatly appreciated!
>>>>>>
>>>>>> Cheers,
>>>>>> -RK
>>>>>>
>>>>>> --
>>>>>> You received this message because you are subscribed to the Google
>>>>>> Groups "grpc.io" group.
>>>>>> To unsubscribe from this group and stop receiving emails from it,
>>>>>> send an email to [email protected].
>>>>>> To post to this group, send email to [email protected].
>>>>>> Visit this group at https://groups.google.com/group/grpc-io.
>>>>>> To view this discussion on the web visit
>>>>>> https://groups.google.com/d/msgid/grpc-io/34f059a0-f825-4aa3-a725-84fb61e46b1f%40googlegroups.com
>>>>>>
>>>>>> <https://groups.google.com/d/msgid/grpc-io/34f059a0-f825-4aa3-a725-84fb61e46b1f%40googlegroups.com?utm_medium=email&utm_source=footer>
>>>>>> .
>>>>>> For more options, visit https://groups.google.com/d/optout.
>>>>>>
>>>>>
>> On Wednesday, November 16, 2016 at 9:12:43 AM UTC-5, [email protected]
>> wrote:
>>>
>>> Sadly, I'm still stuck. I don't know enough C++ to be able to diagnose
>>> this further... :-(
>>>
>>> On Tuesday, November 15, 2016 at 2:01:50 PM UTC-5, [email protected]
>>> wrote:
>>>>
>>>> Ok:
>>>>
>>>> *(gdb) handle SIG36 noprint*
>>>> *Signal Stop Print Pass to program Description*
>>>> *SIG36 No No Yes Real-time event 36*
>>>> *(gdb) run*
>>>> *Starting program: /.../minfail*
>>>> *[Thread debugging using libthread_db enabled]*
>>>> *D1115 13:59:40.187940393 34391 env_linux.c:77] Warning:
>>>> insecure environment read function 'getenv' used*
>>>> *[New Thread 0x7ffff6fcc700 (LWP 34394)]*
>>>> *[New Thread 0x7ffff65cb700 (LWP 34395)]*
>>>> *[New Thread 0x7ffff5bca700 (LWP 34396)]*
>>>> *[New Thread 0x7ffff51c9700 (LWP 34397)]*
>>>> *[New Thread 0x7ffff47c8700 (LWP 34398)]*
>>>> *[New Thread 0x7ffff3dc7700 (LWP 34399)]*
>>>> *[New Thread 0x7ffff33c6700 (LWP 34400)]*
>>>> *[New Thread 0x7ffff29c5700 (LWP 34401)]*
>>>> *[New Thread 0x7ffff1fc4700 (LWP 34402)]*
>>>> *[New Thread 0x7ffff15c3700 (LWP 34403)]*
>>>> *[New Thread 0x7ffff0bc2700 (LWP 34404)]*
>>>> *[New Thread 0x7ffff01c1700 (LWP 34405)]*
>>>> *[New Thread 0x7fffef7c0700 (LWP 34406)]*
>>>> *[New Thread 0x7fffeedbf700 (LWP 34407)]*
>>>> *[New Thread 0x7fffee3be700 (LWP 34408)]*
>>>> *[New Thread 0x7fffed9bd700 (LWP 34409)]*
>>>> *pure virtual method called*
>>>> *terminate called without an active exception*
>>>>
>>>> *Program received signal SIGABRT, Aborted.*
>>>> *0x00000035ce0325e5 in raise () from /lib64/libc.so.6*
>>>> *(gdb) bt*
>>>> *#0 0x00000035ce0325e5 in raise () from /lib64/libc.so.6*
>>>> *#1 0x00000035ce033dc5 in abort () from /lib64/libc.so.6*
>>>> *#2 0x00000035d4cbea7d in __gnu_cxx::__verbose_terminate_handler() ()
>>>> from /usr/lib64/libstdc++.so.6*
>>>> *#3 0x00000035d4cbcbd6 in ?? () from /usr/lib64/libstdc++.so.6*
>>>> *#4 0x00000035d4cbcc03 in std::terminate() () from
>>>> /usr/lib64/libstdc++.so.6*
>>>> *#5 0x00000035d4cbd55f in __cxa_pure_virtual () from
>>>> /usr/lib64/libstdc++.so.6*
>>>> *#6 0x00007ffff76e3f7a in
>>>> grpc::CompletionQueue::AsyncNextInternal(void**, bool*, gpr_timespec) ()
>>>> from /.../lib/libgrpc++.so.1*
>>>> *#7 0x000000000040919f in grpc::CompletionQueue::Next
>>>> [_ZN4grpc15Completion...] (this=0x628fa0, tag=0x7fffffffe1e8,
>>>> ok=0x7fffffffe1e7) at
>>>> .../include/grpc++/impl/codegen/completion_queue.h:148*
>>>> *#8 0x00000000004085ca in main [main] (argc=1, argv=0x7fffffffe3a8) at
>>>> minfail.cc:95*
>>>> *(gdb)*
>>>>
>>>>
>>>> On Tuesday, November 15, 2016 at 1:55:48 PM UTC-5, Craig Tiller wrote:
>>>>>
>>>>> You probably want to first do 'handle SIG36 noprint' to let gdb pass
>>>>> the (totally legitimate) signal to the application.
>>>>>
>>>>> On Tue, Nov 15, 2016 at 8:56 AM <[email protected]> wrote:
>>>>>
>>>>>>
>>>>>> Hi all,
>>>>>>
>>>>>> I've created a tiny code sample that is based off the hello world
>>>>>> async greeter example. I keep getting a "pure virtual method called" in
>>>>>> the
>>>>>> grpc_completion_queue_next() function, and I'm having a hard time
>>>>>> understanding why. What am I doing wrong?
>>>>>>
>>>>>> I've included the proto file, C++ code and gdb output... (the program
>>>>>> is both a client or a server, if you give it a command line value of "c"
>>>>>> it
>>>>>> acts as a client).
>>>>>>
>>>>>> Thanks in advance!
>>>>>>
>>>>>> PROTO FILE
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>> *syntax = "proto3";package helloworld;service Greeter{ rpc
>>>>>> SayHello (HelloRequest) returns (stream HelloReply) {}}message
>>>>>> HelloRequest{ string message = 1;}message HelloReply{ string
>>>>>> reply
>>>>>> = 1;}*
>>>>>>
>>>>>>
>>>>>> C++ CODE
>>>>>>
>>>>>> *#include <iostream>*
>>>>>> *#include <string>*
>>>>>> *#include <grpc++/grpc++.h>*
>>>>>> *#include "minfail.grpc.pb.h"*
>>>>>>
>>>>>> *using namespace std;*
>>>>>> *using namespace helloworld;*
>>>>>>
>>>>>> *class CallData {*
>>>>>> *public:*
>>>>>> * CallData(Greeter::AsyncService* service,
>>>>>> grpc::ServerCompletionQueue* cq) : service_(service), cq_(cq),
>>>>>> responder_(&ctx_), status_(CREATE) {*
>>>>>> * Proceed();*
>>>>>> * }*
>>>>>>
>>>>>> * void Proceed() {*
>>>>>> * if (status_ == CREATE) {*
>>>>>> * status_ = PROCESS;*
>>>>>> * service_->RequestSayHello(&ctx_, &request_, &responder_,
>>>>>> cq_, cq_, this);*
>>>>>> * } else if (status_ == PROCESS) {*
>>>>>> * new CallData(service_, cq_);*
>>>>>> * reply_.set_reply("hello " + request_.message());*
>>>>>> * responder_.Write (reply_, this);*
>>>>>> * responder_.Finish(grpc::Status::OK, this);*
>>>>>> * status_ = FINISH;*
>>>>>> * } else {*
>>>>>> * GPR_ASSERT(status_ == FINISH);*
>>>>>> * delete this;*
>>>>>> * }*
>>>>>> * }*
>>>>>>
>>>>>> *private:*
>>>>>> * HelloRequest request_;*
>>>>>> * HelloReply reply_;*
>>>>>> * grpc::ServerAsyncWriter<HelloReply> responder_;*
>>>>>>
>>>>>> * enum CallStatus { CREATE, PROCESS, FINISH };*
>>>>>> * CallStatus status_;*
>>>>>> * grpc::ServerContext ctx_;*
>>>>>> * grpc::ServerCompletionQueue* cq_;*
>>>>>> * Greeter::AsyncService* service_;*
>>>>>> *};*
>>>>>>
>>>>>> *class GreeterClient*
>>>>>> *{*
>>>>>> *public:*
>>>>>> * GreeterClient (shared_ptr <grpc::Channel> channel)*
>>>>>> * : stub_ (Greeter::NewStub (channel)) {}*
>>>>>> * string*
>>>>>> * SayHello (const string &user) {*
>>>>>> * HelloRequest request;*
>>>>>> * request.set_message (user);*
>>>>>> * grpc::ClientContext context;*
>>>>>> * unique_ptr <grpc::ClientReader <HelloReply>> reader
>>>>>> (stub_->SayHello (&context, request));*
>>>>>> * HelloReply reply;*
>>>>>> * while (reader -> Read (&reply)) {*
>>>>>> * cout << "SayHello returns " << reply.reply() << "\n";*
>>>>>> * }*
>>>>>> * grpc::Status status = reader -> Finish();*
>>>>>> * if (status.ok()) {*
>>>>>> * return (reply.reply());*
>>>>>> * }*
>>>>>> * return ("<RPC failed>");*
>>>>>> * }*
>>>>>>
>>>>>> *private:*
>>>>>> * unique_ptr<Greeter::Stub> stub_;*
>>>>>> *};*
>>>>>>
>>>>>> *int*
>>>>>> *main (int argc, char **argv)*
>>>>>> *{*
>>>>>> * string server_address ("0.0.0.0:50051 <http://0.0.0.0:50051>");*
>>>>>>
>>>>>> * if (argc == 2 && argv [1][0] == 'c') {*
>>>>>> * GreeterClient greeter(grpc::CreateChannel (server_address,
>>>>>> grpc::InsecureChannelCredentials()));*
>>>>>> * cout << "Sending world...\n";*
>>>>>> * cout << "Response is " << greeter.SayHello ("world") <<
>>>>>> "\n";*
>>>>>> * } else {*
>>>>>> * unique_ptr<grpc::ServerCompletionQueue> cq;*
>>>>>> * Greeter::AsyncService service;*
>>>>>> * unique_ptr<grpc::Server> server;*
>>>>>>
>>>>>> * grpc::ServerBuilder builder;*
>>>>>>
>>>>>> * builder.AddListeningPort(server_address,
>>>>>> grpc::InsecureServerCredentials());*
>>>>>> * builder.RegisterService(&service);*
>>>>>> * cq = builder.AddCompletionQueue();*
>>>>>> * server = builder.BuildAndStart();*
>>>>>>
>>>>>> * new CallData(&service, cq.get());*
>>>>>> * CallData* tag; // uniquely identifies a request.*
>>>>>> * bool ok;*
>>>>>> * while (true) {*
>>>>>> * GPR_ASSERT(cq->Next((void **)&tag, &ok));*
>>>>>> * GPR_ASSERT(ok);*
>>>>>> * tag->Proceed();*
>>>>>> * }*
>>>>>>
>>>>>> * server->Shutdown();*
>>>>>> * cq->Shutdown();*
>>>>>> * }*
>>>>>> *}*
>>>>>>
>>>>>> and run / GDB output:
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>> *$ ./minfailD1115 11:45:47.919769500 24264
>>>>>> env_linux.c:77] Warning: insecure environment read function
>>>>>> 'getenv' usedpure virtual method calledterminate called without an
>>>>>> active
>>>>>> exceptionAborted (core dumped)*
>>>>>>
>>>>>> *$ gdb ./minfail*
>>>>>> *... elided ...*
>>>>>> *Program received signal SIG36, Real-time event 36.*
>>>>>> *0x00000035ce0e8cec in epoll_pwait () from /lib64/libc.so.6*
>>>>>> *(gdb) bt*
>>>>>> *#0 0x00000035ce0e8cec in epoll_pwait () from /lib64/libc.so.6*
>>>>>> *#1 0x00007ffff76f8d4a in ?? () from /.../lib/libgrpc++.so.1*
>>>>>> *#2 0x00007ffff76f91a6 in ?? () from /.../lib/libgrpc++.so.1*
>>>>>> *#3 0x00007ffff770d61b in grpc_completion_queue_next () from
>>>>>> /.../lib/libgrpc++.so.1*
>>>>>> *#4 0x00007ffff76e3f20 in
>>>>>> grpc::CompletionQueue::AsyncNextInternal(void**, bool*, gpr_timespec) ()
>>>>>> from /.../lib/libgrpc++.so.1*
>>>>>> *#5 0x000000000040919f in grpc::CompletionQueue::Next
>>>>>> [_ZN4grpc15Completion...] (this=0x628fa0, tag=0x7fffffffe1e8,
>>>>>> ok=0x7fffffffe1e7) at
>>>>>> .../include/grpc++/impl/codegen/completion_queue.h:148*
>>>>>> *#6 0x00000000004085ca in main [main] (argc=1, argv=0x7fffffffe3a8)
>>>>>> at minfail.cc:95*
>>>>>> *(gdb)*
>>>>>>
>>>>>> Any help greatly appreciated!
>>>>>>
>>>>>> Cheers,
>>>>>> -RK
>>>>>>
>>>>>> --
>>>>>> You received this message because you are subscribed to the Google
>>>>>> Groups "grpc.io" group.
>>>>>> To unsubscribe from this group and stop receiving emails from it,
>>>>>> send an email to [email protected].
>>>>>> To post to this group, send email to [email protected].
>>>>>> Visit this group at https://groups.google.com/group/grpc-io.
>>>>>> To view this discussion on the web visit
>>>>>> https://groups.google.com/d/msgid/grpc-io/34f059a0-f825-4aa3-a725-84fb61e46b1f%40googlegroups.com
>>>>>>
>>>>>> <https://groups.google.com/d/msgid/grpc-io/34f059a0-f825-4aa3-a725-84fb61e46b1f%40googlegroups.com?utm_medium=email&utm_source=footer>
>>>>>> .
>>>>>> For more options, visit https://groups.google.com/d/optout.
>>>>>>
>>>>>
--
You received this message because you are subscribed to the Google Groups
"grpc.io" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to [email protected].
To post to this group, send email to [email protected].
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