Fixed compilation on NetBSD 10. NetBSD 10 changed struct kevent's udata type from "intptr_t" to "void *", similarly to how it is defined on other systems. This breaks compilation, since intptr_t is assumed on NetBSD. Fix is to limit special intptr_t handling to NetBSD versions before 10.0. To simplify testing, relevant definitions are moved from configure to code (which seems to be the right thing anyway).

/*
 * Copyright (C) Ruslan Ermilov
 * Copyright (C) Nginx, Inc.
 */


#ifndef _NGX_RWLOCK_H_INCLUDED_
#define _NGX_RWLOCK_H_INCLUDED_


#include <ngx_config.h>
#include <ngx_core.h>


void ngx_rwlock_wlock(ngx_atomic_t *lock);
void ngx_rwlock_rlock(ngx_atomic_t *lock);
void ngx_rwlock_unlock(ngx_atomic_t *lock);
void ngx_rwlock_downgrade(ngx_atomic_t *lock);


#endif /* _NGX_RWLOCK_H_INCLUDED_ */