134 lines
4.2 KiB
C++
134 lines
4.2 KiB
C++
#include "osd.h"
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void osd_t::outbox_push(osd_client_t & cl, osd_op_t *cur_op)
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{
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assert(cur_op->peer_fd);
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if (cur_op->op_type == OSD_OP_OUT)
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{
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clock_gettime(CLOCK_REALTIME, &cur_op->tv_begin);
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}
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cl.outbox.push_back(cur_op);
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if (cl.write_op || cl.outbox.size() > 1 || !try_send(cl))
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{
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if (cl.write_state == 0)
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{
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cl.write_state = CL_WRITE_READY;
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write_ready_clients.push_back(cur_op->peer_fd);
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}
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ringloop->wakeup();
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}
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}
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bool osd_t::try_send(osd_client_t & cl)
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{
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int peer_fd = cl.peer_fd;
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io_uring_sqe* sqe = ringloop->get_sqe();
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if (!sqe)
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{
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return false;
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}
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ring_data_t* data = ((ring_data_t*)sqe->user_data);
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if (!cl.write_op)
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{
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// pick next command
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cl.write_op = cl.outbox.front();
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cl.outbox.pop_front();
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cl.write_state = CL_WRITE_REPLY;
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clock_gettime(CLOCK_REALTIME, &cl.write_op->tv_send);
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if (cl.write_op->op_type == OSD_OP_IN)
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{
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// Measure execution latency
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timespec tv_end = cl.write_op->tv_send;
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op_stat_count[cl.write_op->req.hdr.opcode]++;
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op_stat_sum[cl.write_op->req.hdr.opcode] += (
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(tv_end.tv_sec - cl.write_op->tv_begin.tv_sec)*1000000 +
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(tv_end.tv_nsec - cl.write_op->tv_begin.tv_nsec)/1000
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);
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}
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}
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cl.write_msg.msg_iov = cl.write_op->send_list.get_iovec();
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cl.write_msg.msg_iovlen = cl.write_op->send_list.get_size();
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data->callback = [this, peer_fd](ring_data_t *data) { handle_send(data, peer_fd); };
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my_uring_prep_sendmsg(sqe, cl.peer_fd_index, &cl.write_msg, 0);
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sqe->flags |= IOSQE_FIXED_FILE;
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return true;
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}
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void osd_t::send_replies()
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{
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for (int i = 0; i < write_ready_clients.size(); i++)
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{
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int peer_fd = write_ready_clients[i];
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if (!try_send(clients[peer_fd]))
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{
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write_ready_clients.erase(write_ready_clients.begin(), write_ready_clients.begin() + i);
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return;
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}
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}
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write_ready_clients.clear();
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}
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void osd_t::handle_send(ring_data_t *data, int peer_fd)
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{
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int res = data->res;
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auto cl_it = clients.find(peer_fd);
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if (cl_it != clients.end())
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{
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auto & cl = cl_it->second;
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if (res < 0 && res != -EAGAIN)
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{
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// this is a client socket, so don't panic. just disconnect it
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printf("Client %d socket write error: %d (%s). Disconnecting client\n", peer_fd, -res, strerror(-res));
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stop_client(peer_fd);
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return;
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}
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if (res >= 0)
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{
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osd_op_t *cur_op = cl.write_op;
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while (res > 0 && cur_op->send_list.sent < cur_op->send_list.count)
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{
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iovec & iov = cur_op->send_list.buf[cur_op->send_list.sent];
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if (iov.iov_len <= res)
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{
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res -= iov.iov_len;
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cur_op->send_list.sent++;
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}
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else
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{
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iov.iov_len -= res;
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iov.iov_base += res;
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break;
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}
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}
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if (cur_op->send_list.sent >= cur_op->send_list.count)
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{
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// Done
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if (cur_op->req.hdr.opcode == OSD_OP_SECONDARY_STABILIZE)
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{
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timespec tv_end;
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clock_gettime(CLOCK_REALTIME, &tv_end);
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send_stat_count++;
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send_stat_sum += (
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(tv_end.tv_sec - cl.write_op->tv_send.tv_sec)*1000000 +
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(tv_end.tv_nsec - cl.write_op->tv_send.tv_nsec)/1000
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);
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}
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if (cur_op->op_type == OSD_OP_IN)
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{
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delete cur_op;
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}
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else
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{
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cl.sent_ops[cl.write_op->req.hdr.id] = cl.write_op;
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}
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cl.write_op = NULL;
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cl.write_state = cl.outbox.size() > 0 ? CL_WRITE_READY : 0;
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}
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}
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if (cl.write_state != 0)
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{
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write_ready_clients.push_back(peer_fd);
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}
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}
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}
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