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      1 /*	$NetBSD: tid.h,v 1.2 2025/01/26 16:25:43 christos Exp $	*/
      2 
      3 /*
      4  * Copyright (C) Internet Systems Consortium, Inc. ("ISC")
      5  *
      6  * SPDX-License-Identifier: MPL-2.0
      7  *
      8  * This Source Code Form is subject to the terms of the Mozilla Public
      9  * License, v. 2.0. If a copy of the MPL was not distributed with this
     10  * file, you can obtain one at https://mozilla.org/MPL/2.0/.
     11  *
     12  * See the COPYRIGHT file distributed with this work for additional
     13  * information regarding copyright ownership.
     14  */
     15 
     16 #pragma once
     17 
     18 #include <inttypes.h>
     19 
     20 #include <isc/lang.h>
     21 #include <isc/thread.h>
     22 
     23 ISC_LANG_BEGINDECLS
     24 
     25 #define ISC_TID_UNKNOWN UINT32_MAX
     26 
     27 uint32_t
     28 isc_tid_count(void);
     29 /*%<
     30  * Returns the number of threads.
     31  */
     32 
     33 extern thread_local uint32_t isc__tid_local;
     34 
     35 static inline uint32_t
     36 isc_tid(void) {
     37 	return isc__tid_local;
     38 }
     39 /*%<
     40  * Returns the thread ID of the currently-running loop.
     41  */
     42 
     43 /* Private */
     44 
     45 void
     46 isc__tid_init(uint32_t tid);
     47 
     48 void
     49 isc__tid_initcount(uint32_t count);
     50 
     51 ISC_LANG_ENDDECLS
     52