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Kernel+SystemMonitor: Log amounts of I/O per thread

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This patch adds these I/O counters to each thread:

- (Inode) file read bytes
- (Inode) file write bytes
- Unix socket read bytes
- Unix socket write bytes
- IPv4 socket read bytes
- IPv4 socket write bytes

These are then exposed in /proc/all and seen in SystemMonitor.
This commit is contained in:
Andreas Kling 2019-12-01 17:36:06 +01:00
parent a18aa8fd5f
commit 5a45376180
10 changed files with 171 additions and 17 deletions
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29
Kernel/Net/LocalSocket.cpp
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@ -222,15 +222,13 @@ ssize_t LocalSocket::sendto(FileDescription& description, const void* data, size
{
if (!has_attached_peer(description))
return -EPIPE;
auto role = this->role(description);
if (role == Role::Accepted)
return m_for_client.write((const u8*)data, data_size);
if (role == Role::Connected)
return m_for_server.write((const u8*)data, data_size);
ASSERT_NOT_REACHED();
ssize_t nwritten = send_buffer_for(description).write((const u8*)data, data_size);
if (nwritten > 0)
current->did_unix_socket_write(nwritten);
return nwritten;
}
DoubleBuffer& LocalSocket::buffer_for(FileDescription& description)
DoubleBuffer& LocalSocket::receive_buffer_for(FileDescription& description)
{
auto role = this->role(description);
if (role == Role::Accepted)
@ -240,9 +238,19 @@ DoubleBuffer& LocalSocket::buffer_for(FileDescription& description)
ASSERT_NOT_REACHED();
}
DoubleBuffer& LocalSocket::send_buffer_for(FileDescription& description)
{
auto role = this->role(description);
if (role == Role::Connected)
return m_for_server;
if (role == Role::Accepted)
return m_for_client;
ASSERT_NOT_REACHED();
}
ssize_t LocalSocket::recvfrom(FileDescription& description, void* buffer, size_t buffer_size, int, sockaddr*, socklen_t*)
{
auto& buffer_for_me = buffer_for(description);
auto& buffer_for_me = receive_buffer_for(description);
if (!description.is_blocking()) {
if (buffer_for_me.is_empty()) {
if (!has_attached_peer(description))
@ -257,7 +265,10 @@ ssize_t LocalSocket::recvfrom(FileDescription& description, void* buffer, size_t
if (!has_attached_peer(description) && buffer_for_me.is_empty())
return 0;
ASSERT(!buffer_for_me.is_empty());
return buffer_for_me.read((u8*)buffer, buffer_size);
int nread = buffer_for_me.read((u8*)buffer, buffer_size);
if (nread > 0)
current->did_unix_socket_read(nread);
return nread;
}
StringView LocalSocket::socket_path() const