Ladybird/ladybird
1
0
Fork 0
mirror of https://github.com/LadybirdBrowser/ladybird.git synced 2025-06-10 18:10:56 +09:00
Code Activity

Kernel: Make FIFO inherit from File.

Browse source
This commit is contained in:
Andreas Kling 2019-04-29 04:55:54 +02:00
parent f254a84d17
commit 0a0d739e98
Notes: sideshowbarker 2024-07-19 14:33:20 +09:00
18 changed files with 96 additions and 72 deletions
Download patch file Download diff file Expand all files Collapse all files

26
Kernel/FileSystem/FIFO.cpp
View file

@ -1,4 +1,5 @@
#include <Kernel/FileSystem/FIFO.h>
#include <Kernel/FileSystem/FileDescriptor.h>
#include <Kernel/Lock.h>
#include <AK/StdLibExtras.h>
#include <AK/HashTable.h>
@ -27,6 +28,14 @@ Retained<FIFO> FIFO::create(uid_t uid)
return adopt(*new FIFO(uid));
}
Retained<FileDescriptor> FIFO::open_direction(FIFO::Direction direction)
{
auto descriptor = FileDescriptor::create(this);
attach(direction);
descriptor->set_fifo_direction({ }, direction);
return descriptor;
}
FIFO::FIFO(uid_t uid)
: m_uid(uid)
{
@ -40,7 +49,7 @@ FIFO::~FIFO()
all_fifos().resource().remove(this);
}
void FIFO::open(Direction direction)
void FIFO::attach(Direction direction)
{
if (direction == Reader) {
++m_readers;
@ -55,7 +64,7 @@ void FIFO::open(Direction direction)
}
}
void FIFO::close(Direction direction)
void FIFO::detach(Direction direction)
{
if (direction == Reader) {
#ifdef FIFO_DEBUG
@ -72,17 +81,17 @@ void FIFO::close(Direction direction)
}
}
bool FIFO::can_read() const
bool FIFO::can_read(Process&) const
{
return !m_buffer.is_empty() || !m_writers;
}
bool FIFO::can_write() const
bool FIFO::can_write(Process&) const
{
return m_buffer.bytes_in_write_buffer() < 4096;
}
ssize_t FIFO::read(byte* buffer, ssize_t size)
ssize_t FIFO::read(Process&, byte* buffer, ssize_t size)
{
if (!m_writers && m_buffer.is_empty())
return 0;
@ -96,7 +105,7 @@ ssize_t FIFO::read(byte* buffer, ssize_t size)
return nread;
}
ssize_t FIFO::write(const byte* buffer, ssize_t size)
ssize_t FIFO::write(Process&, const byte* buffer, ssize_t size)
{
if (!m_readers)
return 0;
@ -105,3 +114,8 @@ ssize_t FIFO::write(const byte* buffer, ssize_t size)
#endif
return m_buffer.write(buffer, size);
}
String FIFO::absolute_path() const
{
return String::format("fifo:%u", this);
}