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Kernel: Rewrite pipes

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Pipes have now a fixed size buffer and pipe clone and close is working
again.
This commit is contained in:
Bananymous
2024-08-09 16:50:19 +03:00
parent 6fedf06150
commit b6c964c444
3 changed files with 75 additions and 30 deletions
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10
kernel/include/kernel/FS/Pipe.h
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@@ -1,5 +1,6 @@
#pragma once
#include <BAN/Array.h>
#include <kernel/FS/Inode.h>
#include <kernel/ThreadBlocker.h>
@@ -33,7 +34,7 @@ namespace Kernel
virtual BAN::ErrorOr<size_t> read_impl(off_t, BAN::ByteSpan) override;
virtual BAN::ErrorOr<size_t> write_impl(off_t, BAN::ConstByteSpan) override;
virtual bool can_read_impl() const override { return !m_buffer.empty(); }
virtual bool can_read_impl() const override { return m_buffer_size == 0; }
virtual bool can_write_impl() const override { return true; }
virtual bool has_error_impl() const override { return false; }
@@ -46,10 +47,13 @@ namespace Kernel
timespec m_atime {};
timespec m_mtime {};
timespec m_ctime {};
BAN::Vector<uint8_t> m_buffer;
ThreadBlocker m_thread_blocker;
uint32_t m_writing_count { 1 };
BAN::Array<uint8_t, PAGE_SIZE> m_buffer;
BAN::Atomic<size_t> m_buffer_size { 0 };
size_t m_buffer_tail { 0 };
BAN::Atomic<uint32_t> m_writing_count { 1 };
};
}