Introduced a callback field in the thread structure. It can be set in an

interrupt handler and will be executed right before returning from the
interrupt.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@27648 a95241bf-73f2-0310-859d-f6bbb57e9c96

headers/private/kernel/thread_types.h

@@ -309,6 +309,9 @@ struct thread {
 	bigtime_t		kernel_time;
 	bigtime_t		last_time;
 
+	void			(*post_interrupt_callback)(void*);
+	void*			post_interrupt_data;
+
 	// architecture dependant section
 	struct arch_thread arch_info;
 };

src/system/kernel/arch/x86/arch_int.c

@@ -891,6 +891,7 @@ hardware_interrupt(struct iframe* frame)
 	int32 vector = frame->vector - ARCH_INTERRUPT_BASE;
 	bool levelTriggered = false;
 	int ret;
+	struct thread* thread = thread_get_current_thread();
 
 	if (sCurrentPIC->is_spurious_interrupt(vector)) {
 		TRACE(("got spurious interrupt at vector %ld\n", vector));
@@ -916,6 +917,14 @@ hardware_interrupt(struct iframe* frame)
 
 		RELEASE_THREAD_LOCK();
 		restore_interrupts(state);
+	} else if (thread->post_interrupt_callback != NULL) {
+		void (*callback)(void*) = thread->post_interrupt_callback;
+		void* data = thread->post_interrupt_data;
+
+		thread->post_interrupt_callback = NULL;
+		thread->post_interrupt_data = NULL;
+
+		callback(data);
 	}
 }
 

src/system/kernel/thread.cpp

@@ -248,6 +248,8 @@ create_thread_struct(struct thread *inthread, const char *name,
 	thread->exit.signal = 0;
 	list_init(&thread->exit.waiters);
 	thread->select_infos = NULL;
+	thread->post_interrupt_callback = NULL;
+	thread->post_interrupt_data = NULL;
 
 	sprintf(temp, "thread_%ld_retcode_sem", thread->id);
 	thread->exit.sem = create_sem(0, temp);