//
// Cforall Version 1.0.0 Copyright (C) 2016 University of Waterloo
//
// The contents of this file are covered under the licence agreement in the
// file "LICENCE" distributed with Cforall.
//
// kernel_private.hfa --
//
// Author           : Thierry Delisle
// Created On       : Mon Feb 13 12:27:26 2017
// Last Modified By : Peter A. Buhr
// Last Modified On : Sat Nov 30 19:25:02 2019
// Update Count     : 8
//

#pragma once

#include "kernel.hfa"
#include "thread.hfa"

#include "alarm.hfa"


//-----------------------------------------------------------------------------
// Scheduler

extern "C" {
	void disable_interrupts() OPTIONAL_THREAD;
	void enable_interrupts_noPoll();
	void enable_interrupts( __cfaabi_dbg_ctx_param );
}

void __schedule_thread( $thread * ) __attribute__((nonnull (1)));

//Block current thread and release/wake-up the following resources
void __leave_thread() __attribute__((noreturn));

//-----------------------------------------------------------------------------
// Processor
void main(processorCtx_t *);

void * __create_pthread( pthread_t *, void * (*)(void *), void * );



struct event_kernel_t {
	alarm_list_t alarms;
	__spinlock_t lock;
};

extern event_kernel_t * event_kernel;

struct __cfa_kernel_preemption_state_t {
	bool enabled;
	bool in_progress;
	unsigned short disable_count;
};

extern volatile thread_local __cfa_kernel_preemption_state_t preemption_state __attribute__ ((tls_model ( "initial-exec" )));

extern cluster * mainCluster;

//-----------------------------------------------------------------------------
// Threads
extern "C" {
      void __cfactx_invoke_thread(void (*main)(void *), void * this);
}

__cfaabi_dbg_debug_do(
	extern void __cfaabi_dbg_thread_register  ( $thread * thrd );
	extern void __cfaabi_dbg_thread_unregister( $thread * thrd );
)

// KERNEL ONLY unpark with out disabling interrupts
void __unpark( $thread * thrd __cfaabi_dbg_ctx_param2 );

//-----------------------------------------------------------------------------
// I/O
void __kernel_io_startup     ( cluster &, unsigned, bool );
void __kernel_io_finish_start( cluster & );
void __kernel_io_prepare_stop( cluster & );
void __kernel_io_shutdown    ( cluster &, bool );

//-----------------------------------------------------------------------------
// Utils
#define KERNEL_STORAGE(T,X) static char storage_##X[sizeof(T)]

static inline uint32_t __tls_rand() {
	kernelTLS.rand_seed ^= kernelTLS.rand_seed << 6;
	kernelTLS.rand_seed ^= kernelTLS.rand_seed >> 21;
	kernelTLS.rand_seed ^= kernelTLS.rand_seed << 7;
	return kernelTLS.rand_seed;
}


void doregister( struct cluster & cltr );
void unregister( struct cluster & cltr );

void doregister( struct cluster * cltr, struct $thread & thrd );
void unregister( struct cluster * cltr, struct $thread & thrd );

void doregister( struct cluster * cltr, struct processor * proc );
void unregister( struct cluster * cltr, struct processor * proc );

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// mode: c //
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