74 lines
1.9 KiB
C++
74 lines
1.9 KiB
C++
/*
|
|
* Copyright (c) 2011, 2012, 2013, 2014, 2016, 2017 Jonas 'Sortie' Termansen.
|
|
*
|
|
* Permission to use, copy, modify, and distribute this software for any
|
|
* purpose with or without fee is hereby granted, provided that the above
|
|
* copyright notice and this permission notice appear in all copies.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
|
|
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
|
|
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
|
|
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
|
|
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
|
|
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
|
|
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
|
|
*
|
|
* interrupt.cpp
|
|
* High level interrupt services.
|
|
*/
|
|
|
|
#include <assert.h>
|
|
#include <errno.h>
|
|
#include <string.h>
|
|
|
|
#include <sortix/kernel/interrupt.h>
|
|
#include <sortix/kernel/kernel.h>
|
|
#include <sortix/kernel/kthread.h>
|
|
|
|
namespace Sortix {
|
|
namespace Interrupt {
|
|
|
|
Thread* interrupt_worker_thread = NULL;
|
|
bool interrupt_worker_thread_boost = false;
|
|
|
|
static struct interrupt_work* first;
|
|
static struct interrupt_work* last;
|
|
|
|
void WorkerThread(void* /*user*/)
|
|
{
|
|
assert(Interrupt::IsEnabled());
|
|
while ( true )
|
|
{
|
|
struct interrupt_work* work;
|
|
Interrupt::Disable();
|
|
work = first;
|
|
first = NULL;
|
|
last = NULL;
|
|
Interrupt::Enable();
|
|
if ( !work )
|
|
{
|
|
// TODO: Make this thread not run until work arrives.
|
|
kthread_yield();
|
|
continue;
|
|
}
|
|
while ( work )
|
|
{
|
|
struct interrupt_work* next_work = work->next;
|
|
work->handler(work->context);
|
|
work = next_work;
|
|
}
|
|
}
|
|
}
|
|
|
|
void ScheduleWork(struct interrupt_work* work)
|
|
{
|
|
assert(!Interrupt::IsEnabled());
|
|
(last ? last->next : first) = work;
|
|
work->next = NULL;
|
|
last = work;
|
|
interrupt_worker_thread_boost = true;
|
|
}
|
|
|
|
} // namespace Interrupt
|
|
} // namespace Sortix
|