133 lines
3.5 KiB
C++
133 lines
3.5 KiB
C++
#include <sys/timerfd.h>
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#include <sys/poll.h>
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#include <iostream>
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#include "blockstore.h"
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class timerfd_interval
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{
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int wait_state;
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int timerfd;
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int status;
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ring_loop_t *ringloop;
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ring_consumer_t consumer;
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std::function<void(void)> callback;
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public:
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timerfd_interval(ring_loop_t *ringloop, int seconds, std::function<void(void)> cb)
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{
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wait_state = 0;
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timerfd = timerfd_create(CLOCK_MONOTONIC, TFD_NONBLOCK);
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if (timerfd < 0)
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{
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throw std::runtime_error(std::string("timerfd_create: ") + strerror(errno));
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}
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struct itimerspec exp = {
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.it_interval = { seconds, 0 },
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.it_value = { seconds, 0 },
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};
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if (timerfd_settime(timerfd, 0, &exp, NULL))
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{
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throw std::runtime_error(std::string("timerfd_settime: ") + strerror(errno));
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}
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consumer.loop = [this]() { loop(); };
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ringloop->register_consumer(consumer);
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this->ringloop = ringloop;
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this->callback = cb;
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}
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~timerfd_interval()
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{
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ringloop->unregister_consumer(consumer);
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close(timerfd);
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}
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void loop()
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{
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if (wait_state == 1)
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{
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return;
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}
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struct io_uring_sqe *sqe = ringloop->get_sqe();
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if (!sqe)
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{
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wait_state = 0;
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return;
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}
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struct ring_data_t *data = ((ring_data_t*)sqe->user_data);
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my_uring_prep_poll_add(sqe, timerfd, POLLIN);
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data->callback = [&](ring_data_t *data)
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{
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if (data->res < 0)
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{
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throw std::runtime_error(std::string("waiting for timer failed: ") + strerror(-data->res));
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}
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uint64_t n;
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read(timerfd, &n, 8);
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wait_state = 0;
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callback();
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};
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wait_state = 1;
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ringloop->submit();
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}
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};
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int main(int narg, char *args[])
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{
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spp::sparse_hash_map<std::string, std::string> config;
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config["meta_device"] = "./test_meta.bin";
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config["journal_device"] = "./test_journal.bin";
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config["data_device"] = "./test_data.bin";
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ring_loop_t *ringloop = new ring_loop_t(512);
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blockstore *bs = new blockstore(config, ringloop);
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timerfd_interval tick_tfd(ringloop, 1, []()
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{
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printf("tick 1s\n");
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});
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blockstore_operation op;
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int main_state = 0;
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ring_consumer_t main_cons;
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op.callback = [&](blockstore_operation *op)
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{
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printf("op completed %d\n", op->retval);
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if (main_state == 1)
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main_state = 2;
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else if (main_state == 3)
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main_state = 4;
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};
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main_cons.loop = [&]()
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{
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if (main_state == 0)
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{
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if (bs->is_started())
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{
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printf("init completed\n");
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op.flags = OP_WRITE;
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op.oid = { .inode = 1, .stripe = 0 };
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op.version = 0;
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op.offset = 4096;
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op.len = 4096;
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op.buf = (uint8_t*)memalign(512, 4096);
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memset(op.buf, 0xaa, 4096);
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bs->enqueue_op(&op);
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main_state = 1;
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}
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}
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else if (main_state == 2)
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{
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printf("syncing\n");
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op.flags = OP_SYNC;
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bs->enqueue_op(&op);
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main_state = 3;
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}
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};
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ringloop->register_consumer(main_cons);
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while (true)
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{
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ringloop->loop();
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}
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delete bs;
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delete ringloop;
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return 0;
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}
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