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LibCore+LibTLS: Don't keep a "ready to write" notifier on all Sockets

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The "ready to write" notifier we set up in generic socket connection is
really only meant to detect a successful connection. Once we have a TCP
connection, for example, it will fire on every event loop iteration.

This was causing IRC Client to max out the CPU by getting this no-op
notifier callback over and over.

Since this was only used by TLSv12, I changed that code to create its
own notifier instead. It might be possible to improve TLS performance
by only processing writes when actually needed, but I didn't look very
closely at that for this patch. :^)
This commit is contained in:
Andreas Kling 2020-05-18 20:16:52 +02:00
parent 9eaf22090f
commit 4b202a3c79
5 changed files with 27 additions and 20 deletions
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20
Libraries/LibTLS/TLSv12.h
View file

@ -298,22 +298,6 @@ struct Context {
class TLSv12 : public Core::Socket {
C_OBJECT(TLSv12)
public:
explicit TLSv12(Core::Object* parent, Version version = Version::V12)
: Core::Socket(Core::Socket::Type::TCP, parent)
{
m_context.version = version;
m_context.is_server = false;
m_context.tls_buffer = ByteBuffer::create_uninitialized(0);
int fd = socket(AF_INET, SOCK_STREAM | SOCK_NONBLOCK, 0);
if (fd < 0) {
set_error(errno);
} else {
set_fd(fd);
set_mode(IODevice::ReadWrite);
set_error(0);
}
}
ByteBuffer& write_buffer() { return m_context.tls_buffer; }
bool is_established() const { return m_context.connection_status == ConnectionStatus::Established; }
virtual bool connect(const String&, int) override;
@ -364,6 +348,8 @@ public:
Function<void()> on_tls_finished;
private:
explicit TLSv12(Core::Object* parent, Version version = Version::V12);
virtual bool common_connect(const struct sockaddr*, socklen_t) override;
void consume(const ByteBuffer& record);
@ -476,6 +462,8 @@ private:
OwnPtr<Crypto::Cipher::AESCipher::CBCMode> m_aes_local;
OwnPtr<Crypto::Cipher::AESCipher::CBCMode> m_aes_remote;
RefPtr<Core::Notifier> m_write_notifier;
};
namespace Constants {