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Kernel: Allow Lock to block from BlockCondition

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This enables the Lock class to block a thread even while the thread is
working on a BlockCondition. A thread can still only be either blocked
by a Lock or a BlockCondition.

This also establishes a linked list of threads that are blocked by a
Lock and unblocking directly unlocks threads and wakes them directly.
This commit is contained in:
Tom 2021-07-10 10:23:16 -06:00 • committed by Andreas Kling
parent d9fb93c5ce
commit 026ffa343d
8 changed files with 442 additions and 267 deletions
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2
Kernel/LockMode.h
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@ -8,7 +8,7 @@
namespace Kernel {
enum class LockMode {
enum class LockMode : u8 {
Unlocked,
Shared,
Exclusive