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Kernel: Introduce ThreadBlocker as a way to make unblocking neater :)

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And port all the descriptor-based blocks over to it as a proof of concept.
This commit is contained in:
Robin Burchell
2019-07-18 16:22:26 +02:00
committed by Andreas Kling
parent a27c9e3e01
commit 0c8813e6d9
6 changed files with 154 additions and 67 deletions
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6
Kernel/Process.cpp
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@@ -900,7 +900,7 @@ ssize_t Process::do_write(FileDescription& description, const u8* data, int data
#ifdef IO_DEBUG
dbgprintf("block write on %d\n", fd);
#endif
current->block(Thread::State::BlockedWrite, description);
current->block(*new Thread::ThreadBlockerWrite(description));
}
ssize_t rc = description.write(data + nwritten, data_size - nwritten);
#ifdef IO_DEBUG
@@ -962,7 +962,7 @@ ssize_t Process::sys$read(int fd, u8* buffer, ssize_t size)
return -EBADF;
if (description->is_blocking()) {
if (!description->can_read()) {
current->block(Thread::State::BlockedRead, *description);
current->block(*new Thread::ThreadBlockerRead(*description));
if (current->m_was_interrupted_while_blocked)
return -EINTR;
}
@@ -2122,7 +2122,7 @@ int Process::sys$accept(int accepting_socket_fd, sockaddr* address, socklen_t* a
auto& socket = *accepting_socket_description->socket();
if (!socket.can_accept()) {
if (accepting_socket_description->is_blocking()) {
current->block(Thread::State::BlockedAccept, *accepting_socket_description);
current->block(*new Thread::ThreadBlockerAccept(*accepting_socket_description));
if (current->m_was_interrupted_while_blocked)
return -EINTR;
} else {