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Kernel: Move TTY-related files into Kernel/TTY/.

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This commit is contained in:
Andreas Kling 2019-04-03 12:28:45 +02:00
parent f9864940eb
commit 9fca94269e
17 changed files with 16 additions and 16 deletions
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51
Kernel/TTY/PTYMultiplexer.cpp Normal file
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#include "PTYMultiplexer.h"
#include "MasterPTY.h"
#include <Kernel/Process.h>
#include <LibC/errno_numbers.h>
//#define PTMX_DEBUG
static const unsigned s_max_pty_pairs = 8;
static PTYMultiplexer* s_the;
PTYMultiplexer& PTYMultiplexer::the()
{
ASSERT(s_the);
return *s_the;
}
PTYMultiplexer::PTYMultiplexer()
: CharacterDevice(5, 2)
, m_lock("PTYMultiplexer")
{
s_the = this;
m_freelist.ensure_capacity(s_max_pty_pairs);
for (int i = s_max_pty_pairs; i > 0; --i)
m_freelist.unchecked_append(i - 1);
}
PTYMultiplexer::~PTYMultiplexer()
{
}
KResultOr<Retained<FileDescriptor>> PTYMultiplexer::open(int options)
{
LOCKER(m_lock);
if (m_freelist.is_empty())
return KResult(-EBUSY);
auto master_index = m_freelist.take_last();
auto master = adopt(*new MasterPTY(master_index));
#ifdef PTMX_DEBUG
dbgprintf("PTYMultiplexer::open: Vending master %u\n", master->index());
#endif
return VFS::the().open(move(master), options);
}
void PTYMultiplexer::notify_master_destroyed(Badge<MasterPTY>, unsigned index)
{
LOCKER(m_lock);
m_freelist.append(index);
#ifdef PTMX_DEBUG
dbgprintf("PTYMultiplexer: %u added to freelist\n", index);
#endif
}