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#include "common.hh"
#include "buffer.hh"
#include "io.hh"
#include "looper.hh"
#include "socket_test.hh"
#include <sys/socket.h>
#include <utility>
namespace {
constexpr size_t kBaseSize = 512 * 1024;
constexpr size_t kMaxSize = 10 * 1024 * 1024;
class ClientImpl : public SocketTest::Client {
public:
ClientImpl(std::shared_ptr<Looper> looper, unique_fd&& fd)
: looper_(std::move(looper)), fd_(std::move(fd)),
in_(Buffer::growing(kBaseSize, kMaxSize)),
out_(Buffer::growing(kBaseSize, kMaxSize)) {
looper_->add(fd_.get(), Looper::EVENT_READ,
std::bind(&ClientImpl::event, this, std::placeholders::_1));
}
~ClientImpl() override {
if (!closed_)
looper_->remove(fd_.get());
}
bool closed() const override {
return closed_;
}
void write(std::function<void(Buffer*)> writer) override {
ASSERT_FALSE(closed_);
bool empty = out_->empty();
writer(out_.get());
if (empty) {
size_t bytes;
ASSERT_TRUE(io::drain(out_.get(), fd_.get(), &bytes));
if (out_->empty())
return;
}
update();
}
void write(std::string_view data) override {
ASSERT_FALSE(closed_);
if (data.empty())
return;
bool empty = out_->empty();
auto size = Buffer::write(out_.get(), data.data(), data.size());
ASSERT_EQ(data.size(), size);
if (empty) {
size_t bytes;
ASSERT_TRUE(io::drain(out_.get(), fd_.get(), &bytes));
if (out_->empty())
return;
}
update();
}
void read(std::function<void(RoBuffer*)> reader) override {
bool full = in_->full();
reader(in_.get());
if (full && !in_->full())
update();
}
std::string_view received() const override {
size_t avail;
auto* ptr = in_->rbuf(1, avail);
return std::string_view(ptr, avail);
}
void forget(size_t bytes) override {
bool full = in_->full();
in_->rcommit(bytes);
if (full && bytes > 0)
update();
}
void wait(Logger* logger) override {
ASSERT_FALSE(waiting_);
ASSERT_FALSE(closed_);
waiting_ = true;
looper_->run(logger);
waiting_ = false;
}
private:
void event(uint8_t ev) {
if (ev & Looper::EVENT_ERROR) {
FAIL();
}
bool need_update = false;
if (ev & Looper::EVENT_READ) {
switch (io::fill(fd_.get(), in_.get())) {
case io::Return::OK:
break;
case io::Return::ERR:
FAIL();
case io::Return::CLOSED:
ASSERT_TRUE(out_->empty());
closed_ = true;
looper_->remove(fd_.get());
fd_.reset();
if (waiting_)
looper_->quit();
return;
}
if (in_->full())
need_update = true;
}
if (ev & Looper::EVENT_WRITE) {
ASSERT_TRUE(io::drain(out_.get(), fd_.get()));
if (out_->empty())
need_update = true;
}
if (waiting_)
looper_->quit();
if (need_update)
update();
}
void update() {
uint8_t events = 0;
if (!in_->full())
events |= Looper::EVENT_READ;
if (!out_->empty())
events |= Looper::EVENT_WRITE;
looper_->update(fd_.get(), events);
}
std::shared_ptr<Looper> looper_;
unique_fd fd_;
std::unique_ptr<Buffer> in_;
std::unique_ptr<Buffer> out_;
bool closed_{false};
bool waiting_{false};
};
} // namespace
SocketTest::SocketTest()
: looper_(Looper::create()) {}
std::pair<unique_fd, unique_fd> SocketTest::create_pair() {
int ret[2];
if (socketpair(AF_UNIX, SOCK_STREAM, 0, ret) == 0) {
if (io::make_nonblocking(ret[0]) && io::make_nonblocking(ret[1])) {
return std::make_pair(unique_fd(ret[0]), unique_fd(ret[1]));
}
io::close(ret[0]);
io::close(ret[1]);
}
return std::make_pair(nullptr, nullptr);
}
std::unique_ptr<SocketTest::Client> SocketTest::create_client(unique_fd&& fd) {
return std::make_unique<ClientImpl>(looper_, std::move(fd));
}
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