Add a WRK_BgThread-light for use with fellow_cache_test

src/Makefile.am

@@ -299,9 +299,11 @@ endif
 ############################################################
 ## test programs
 
+standalone_aux = aux_cache_wrk.c
+
 fellow_log_test_ndebug_LDADD = libfellow.la
 fellow_log_test_ndebug_CFLAGS = $(AM_CFLAGS) $(DEV_CFLAGS) $(XXHASH_CFLAGS) -DTEST_DRIVER
-fellow_log_test_ndebug_SOURCES = fellow_log_test.c
+fellow_log_test_ndebug_SOURCES = $(standalone_aux) fellow_log_test.c
 
 fellow_log_test_LDFLAGS = $(fellow_log_test_ndebug_LDFLAGS)
 fellow_log_test_LDADD = libfellowwitness.la
@@ -314,7 +316,7 @@ fellow_cache_test_LDFLAGS = $(fellow_log_test_ndebug_LDFLAGS)
 fellow_cache_test_LDADD = libfellowwitness.la
 fellow_cache_test_CFLAGS = $(fellow_log_test_ndebug_CFLAGS) \
 	-DDEBUG -DBUDDY_WITNESS
-fellow_cache_test_SOURCES = fellow_cache.c
+fellow_cache_test_SOURCES = $(standalone_aux) fellow_cache.c
 
 noinst_PROGRAMS += \
 	fellow_log_dbg \
@@ -451,4 +453,4 @@ dist_man_MANS = \
 # XXX TODO flexelint fellow_io_*
 flint:
 	flexelint $(VARNISHSRC_CFLAGS) -I .. flint.lnt \
-		`ls *.c | grep -vE 'fellow_io_aio|fellow_io_threads|fellow_log_test.c|slashmap.c'`
+		`ls *.c | grep -vE 'fellow_io_aio|fellow_io_threads|fellow_log_test.c|slashmap.c|aux_'`

src/aux_cache_wrk.c

+/*-
+ * Copyright (c) 2006 Verdens Gang AS
+ * Copyright (c) 2006-2011 Varnish Software AS
+ * All rights reserved.
+ *
+ * Author: Poul-Henning Kamp <phk@phk.freebsd.dk>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ */
+
+#include "config.h"
+
+#include <stdlib.h>
+#include <sched.h>
+
+#include "cache/cache_varnishd.h"
+
+/*
+ * stripped down version of Varnish-Cache WRK_BgThread for
+ * fellow_cache_test
+ */
+struct bgthread {
+	unsigned	magic;
+#define BGTHREAD_MAGIC	0x23b5152b
+	const char	*name;
+	bgthread_t	*func;
+	void		*priv;
+};
+
+static void *
+wrk_bgthread(void *arg)
+{
+	struct bgthread *bt;
+	struct worker wrk;
+	struct worker_priv wpriv[1];
+	void *r;
+
+	CAST_OBJ_NOTNULL(bt, arg, BGTHREAD_MAGIC);
+	INIT_OBJ(&wrk, WORKER_MAGIC);
+	INIT_OBJ(wpriv, WORKER_PRIV_MAGIC);
+	wrk.wpriv = wpriv;
+
+	r = bt->func(&wrk, bt->priv);
+	return (r);
+}
+
+void
+WRK_BgThread(pthread_t *thr, const char *name, bgthread_t *func, void *priv)
+{
+	struct bgthread *bt;
+
+	ALLOC_OBJ(bt, BGTHREAD_MAGIC);
+	AN(bt);
+
+	bt->name = name;
+	bt->func = func;
+	bt->priv = priv;
+	PTOK(pthread_create(thr, NULL, wrk_bgthread, bt));
+}