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Semaphore: Implemented the initial_count parameter.
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@ -20,7 +20,7 @@ public:
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static Kernel::HandleType GetStaticHandleType() { return Kernel::HandleType::Semaphore; }
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static Kernel::HandleType GetStaticHandleType() { return Kernel::HandleType::Semaphore; }
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Kernel::HandleType GetHandleType() const override { return Kernel::HandleType::Semaphore; }
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Kernel::HandleType GetHandleType() const override { return Kernel::HandleType::Semaphore; }
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u32 initial_count; ///< Number of reserved entries TODO(Subv): Make use of this
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u32 initial_count; ///< Number of entries reserved for other threads
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u32 max_count; ///< Maximum number of simultaneous holders the semaphore can have
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u32 max_count; ///< Maximum number of simultaneous holders the semaphore can have
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u32 current_usage; ///< Number of currently used entries in the semaphore
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u32 current_usage; ///< Number of currently used entries in the semaphore
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std::queue<Handle> waiting_threads; ///< Threads that are waiting for the semaphore
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std::queue<Handle> waiting_threads; ///< Threads that are waiting for the semaphore
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@ -58,7 +58,7 @@ public:
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/**
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/**
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* Creates a semaphore
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* Creates a semaphore
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* @param handle Reference to handle for the newly created semaphore
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* @param handle Reference to handle for the newly created semaphore
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* @param initial_count initial amount of times the semaphore is held
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* @param initial_count number of slots reserved for other threads
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* @param max_count maximum number of holders the semaphore can have
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* @param max_count maximum number of holders the semaphore can have
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* @param name Optional name of semaphore
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* @param name Optional name of semaphore
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* @return Pointer to new Semaphore object
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* @return Pointer to new Semaphore object
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@ -70,8 +70,10 @@ Semaphore* CreateSemaphore(Handle& handle, u32 initial_count,
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handle = g_object_pool.Create(semaphore);
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handle = g_object_pool.Create(semaphore);
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semaphore->initial_count = initial_count;
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semaphore->initial_count = initial_count;
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// When the semaphore is created, all slots are used by the creator thread
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// When the semaphore is created, some slots are reserved for other threads,
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// and the rest is reserved for the caller thread
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semaphore->max_count = semaphore->current_usage = max_count;
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semaphore->max_count = semaphore->current_usage = max_count;
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semaphore->current_usage -= initial_count;
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semaphore->name = name;
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semaphore->name = name;
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return semaphore;
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return semaphore;
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@ -13,8 +13,8 @@ namespace Kernel {
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/**
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/**
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* Creates a semaphore
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* Creates a semaphore
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* @param handle Pointer to the handle of the newly created object
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* @param handle Pointer to the handle of the newly created object
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* @param initial_count number of reserved entries in the semaphore
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* @param initial_count number of slots reserved for other threads
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* @param max_count maximum number of holders the semaphore can have
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* @param max_count maximum number of slots the semaphore can have
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* @param name Optional name of semaphore
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* @param name Optional name of semaphore
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* @return ResultCode of the error
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* @return ResultCode of the error
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*/
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*/
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