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5859e16e53
Instead of using the generic block mechanism, wait-queued threads now go into the special Queued state. This fixes an issue where signal dispatch would unblock a wait-queued thread (because signal dispatch unblocks blocked threads) and cause confusion since the thread only expected to be awoken by the queue.
34 lines
609 B
C++
34 lines
609 B
C++
#include <Kernel/Thread.h>
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#include <Kernel/WaitQueue.h>
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WaitQueue::WaitQueue()
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{
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}
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WaitQueue::~WaitQueue()
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{
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}
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void WaitQueue::enqueue(Thread& thread)
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{
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InterruptDisabler disabler;
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m_threads.append(&thread);
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}
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void WaitQueue::wake_one()
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{
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InterruptDisabler disabler;
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if (m_threads.is_empty())
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return;
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if (auto* thread = m_threads.take_first())
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thread->wake_from_queue();
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}
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void WaitQueue::wake_all()
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{
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InterruptDisabler disabler;
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if (m_threads.is_empty())
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return;
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while (!m_threads.is_empty())
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m_threads.take_first()->wake_from_queue();
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}
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