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io/uring/Queue: support IORING_CQE_F_MORE

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This commit is contained in:
Max Kellermann 2025-02-03 22:16:18 +01:00 committed by Max Kellermann
parent 268f737ac4
commit b7655d38f7
2 changed files with 14 additions and 6 deletions

11
src/io/uring/CancellableOperation.hxx

@ -48,14 +48,19 @@ public:
new_operation.cancellable = this; new_operation.cancellable = this;
} }
void OnUringCompletion(int res) noexcept { void OnUringCompletion(int res, bool more) noexcept {
if (operation == nullptr) if (operation == nullptr)
return; return;
assert(operation->cancellable == this); assert(operation->cancellable == this);
operation->cancellable = nullptr;
std::exchange(operation, nullptr)->OnUringCompletion(res); if (more) {
operation->OnUringCompletion(res);
} else {
operation->cancellable = nullptr;
std::exchange(operation, nullptr)->OnUringCompletion(res);
}
} }
}; };

9
src/io/uring/Queue.cxx

@ -57,9 +57,12 @@ Queue::DispatchOneCompletion(struct io_uring_cqe &cqe) noexcept
void *data = io_uring_cqe_get_data(&cqe); void *data = io_uring_cqe_get_data(&cqe);
if (data != nullptr) { if (data != nullptr) {
auto *c = (CancellableOperation *)data; auto *c = (CancellableOperation *)data;
c->OnUringCompletion(cqe.res); const bool more = cqe.flags & IORING_CQE_F_MORE;
c->unlink(); c->OnUringCompletion(cqe.res, more);
delete c; if (!more) {
c->unlink();
delete c;
}
} }
ring.SeenCompletion(cqe); ring.SeenCompletion(cqe);