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Use a spinlock for thread waiter mutex

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Since the waitermutex is only ever locked for a short amount of time, spinning in contention-heavy scenarios ends up quite a bit more efficient than a kernel wait.
This commit is contained in:
Billy Laws 2023-01-11 20:41:33 +00:00
parent e2463b7619
commit 7c623f8301
1 changed files with 2 additions and 1 deletions
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app/src/main/cpp/skyline/kernel/types/KThread.h
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@ -7,6 +7,7 @@
#include <nce/guest.h> #include <nce/guest.h>
#include <kernel/scheduler.h> #include <kernel/scheduler.h>
#include <common/signal.h> #include <common/signal.h>
#include <common/spin_lock.h>
#include "KSyncObject.h" #include "KSyncObject.h"
#include "KPrivateMemory.h" #include "KPrivateMemory.h"
#include "KSharedMemory.h" #include "KSharedMemory.h"
@ -62,7 +63,7 @@ namespace skyline {
bool pendingYield{}; //!< If the thread has been yielded and hasn't been acted upon it yet bool pendingYield{}; //!< If the thread has been yielded and hasn't been acted upon it yet
bool forceYield{}; //!< If the thread has been forcefully yielded by another thread bool forceYield{}; //!< If the thread has been forcefully yielded by another thread
std::recursive_mutex waiterMutex; //!< Synchronizes operations on mutation of the waiter members RecursiveSpinLock waiterMutex; //!< Synchronizes operations on mutation of the waiter members
u32 *waitMutex; //!< The key of the mutex which this thread is waiting on u32 *waitMutex; //!< The key of the mutex which this thread is waiting on
KHandle waitTag; //!< The handle of the thread which requested the mutex lock KHandle waitTag; //!< The handle of the thread which requested the mutex lock
std::shared_ptr<KThread> waitThread; //!< The thread which this thread is waiting on std::shared_ptr<KThread> waitThread; //!< The thread which this thread is waiting on