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fe237ee215
- Turn Keyboard into a CharacterDevice (85,1) at /dev/keyboard.
- Implement MM::unmapRegionsForTask() and MM::unmapRegion()
- Save SS correctly on interrupt.
- Add a simple Spawn syscall for launching another process.
- Move a bunch of IO syscall debug output behind DEBUG_IO.
- Have ASSERT do a "cli" immediately when failing.
This makes the output look proper every time.
- Implement a bunch of syscalls in LibC.
- Add a simple shell ("sh"). All it can do now is read a line
of text from /dev/keyboard and then try launching the specified
executable by calling spawn().
There are definitely bugs in here, but we're moving on forward.
56 lines
1.1 KiB
C++
56 lines
1.1 KiB
C++
#pragma once
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#include "Assertions.h"
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#include "Types.h"
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namespace AK {
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template<typename T, size_t capacity>
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class CircularQueue {
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public:
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CircularQueue()
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{
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for (size_t i = 0; i < capacity; ++i)
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m_elements[i] = T();
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}
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bool isEmpty() const { return !m_size; }
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size_t size() const { return m_size; }
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void dump() const
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{
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kprintf("CircularQueue<%zu>:\n", capacity);
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kprintf(" size: %zu\n", m_size);
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for (size_t i = 0; i < capacity; ++i) {
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kprintf(" [%zu] %d %c\n", i, m_elements[i], i == m_head ? '*' : ' ');
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}
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}
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void enqueue(const T& t)
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{
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m_elements[(m_head + m_size) % capacity] = t;
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if (m_size == capacity)
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m_head = (m_head + 1) % capacity;
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else
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++m_size;
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}
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T dequeue()
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{
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ASSERT(!isEmpty());
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T value = m_elements[m_head];
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m_head = (m_head + 1) % capacity;
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--m_size;
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return value;
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}
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private:
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T m_elements[capacity];
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size_t m_size { 0 };
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size_t m_head { 0 };
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};
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}
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using AK::CircularQueue;
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