GCOV - Varnish Cache


/*-
 * Copyright (c) 2006 Verdens Gang AS
 * Copyright (c) 2006-2015 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 "cache/cache_varnishd.h"

#include <stdlib.h>

#include "vbh.h"

#include "waiter/waiter.h"
#include "waiter/waiter_priv.h"
#include "waiter/mgt_waiter.h"

static int v_matchproto_(vbh_cmp_t)
waited_cmp(void *priv, const void *a, const void *b)
{
        const struct waiter *ww;
        const struct waited *aa, *bb;

        CAST_OBJ_NOTNULL(ww, priv, WAITER_MAGIC);
        CAST_OBJ_NOTNULL(aa, a, WAITED_MAGIC);
        CAST_OBJ_NOTNULL(bb, b, WAITED_MAGIC);

        return (Wait_When(aa) < Wait_When(bb));
}

static void v_matchproto_(vbh_update_t)
waited_update(void *priv, void *p, unsigned u)
{
        struct waited *pp;

        (void)priv;
        CAST_OBJ_NOTNULL(pp, p, WAITED_MAGIC);
        pp->idx = u;
}

/**********************************************************************/

void
Wait_Call(const struct waiter *w, struct waited *wp,
    enum wait_event ev, double now)
{
        CHECK_OBJ_NOTNULL(w, WAITER_MAGIC);
        CHECK_OBJ_NOTNULL(wp, WAITED_MAGIC);
        AN(wp->func);
        assert(wp->idx == VBH_NOIDX);
        wp->func(wp, ev, now);
}

/**********************************************************************/

void
Wait_HeapInsert(const struct waiter *w, struct waited *wp)
{
        CHECK_OBJ_NOTNULL(w, WAITER_MAGIC);
        CHECK_OBJ_NOTNULL(wp, WAITED_MAGIC);
        assert(wp->idx == VBH_NOIDX);
        VBH_insert(w->heap, wp);
}

/*
 * XXX: wp is const because otherwise FlexeLint complains.  However, *wp
 * XXX: will actually change as a result of calling this function, via
 * XXX: the pointer stored in the bin-heap.  I can see how this const
 * XXX: could maybe confuse a compilers optimizer, but I do not expect
 * XXX: any harm to come from it.  Caveat Emptor.
 */

int
Wait_HeapDelete(const struct waiter *w, const struct waited *wp)
{
        CHECK_OBJ_NOTNULL(w, WAITER_MAGIC);
        CHECK_OBJ_NOTNULL(wp, WAITED_MAGIC);
        if (wp->idx == VBH_NOIDX)
                return (0);
        VBH_delete(w->heap, wp->idx);
        return (1);
}

double
Wait_HeapDue(const struct waiter *w, struct waited **wpp)
{
        struct waited *wp;

        wp = VBH_root(w->heap);
        CHECK_OBJ_ORNULL(wp, WAITED_MAGIC);
        if (wp == NULL) {
                if (wpp != NULL)
                        *wpp = NULL;
                return (0);
        }
        if (wpp != NULL)
                *wpp = wp;
        return (Wait_When(wp));
}

/**********************************************************************/

int
Wait_Enter(const struct waiter *w, struct waited *wp)
{

        CHECK_OBJ_NOTNULL(w, WAITER_MAGIC);
        CHECK_OBJ_NOTNULL(wp, WAITED_MAGIC);
        assert(wp->fd > 0);                     // stdin never comes here
        AN(wp->func);
        wp->idx = VBH_NOIDX;
        return (w->impl->enter(w->priv, wp));
}

/**********************************************************************/

const char *
Waiter_GetName(void)
{

        if (waiter != NULL)
                return (waiter->name);
        else
                return ("(No Waiter?)");
}

struct waiter *
Waiter_New(void)
{
        struct waiter *w;

        AN(waiter);
        AN(waiter->name);
        AN(waiter->init);
        AN(waiter->enter);
        AN(waiter->fini);

        w = calloc(1, sizeof (struct waiter) + waiter->size);
        AN(w);
        INIT_OBJ(w, WAITER_MAGIC);
        w->priv = (void*)(w + 1);
        w->impl = waiter;
        VTAILQ_INIT(&w->waithead);
        w->heap = VBH_new(w, waited_cmp, waited_update);

        waiter->init(w);

        return (w);
}

void
Waiter_Destroy(struct waiter **wp)
{
        struct waiter *w;

        TAKE_OBJ_NOTNULL(w, wp, WAITER_MAGIC);

        AZ(VBH_root(w->heap));
        AN(w->impl->fini);
        w->impl->fini(w);
        FREE_OBJ(w);
}

		varnish-cache/bin/varnishd/waiter/cache_waiter.c
0		/*-
1		* Copyright (c) 2006 Verdens Gang AS
2		* Copyright (c) 2006-2015 Varnish Software AS
3		* All rights reserved.
4		*
5		* Author: Poul-Henning Kamp <phk@phk.freebsd.dk>
6		*
7		* SPDX-License-Identifier: BSD-2-Clause
8		*
9		* Redistribution and use in source and binary forms, with or without
10		* modification, are permitted provided that the following conditions
11		* are met:
12		* 1. Redistributions of source code must retain the above copyright
13		* notice, this list of conditions and the following disclaimer.
14		* 2. Redistributions in binary form must reproduce the above copyright
15		* notice, this list of conditions and the following disclaimer in the
16		* documentation and/or other materials provided with the distribution.
17		*
18		* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
19		* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20		* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21		* ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
22		* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23		* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24		* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25		* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26		* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27		* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28		* SUCH DAMAGE.
29		*
30		*/
31
32		#include "config.h"
33
34		#include "cache/cache_varnishd.h"
35
36		#include <stdlib.h>
37
38		#include "vbh.h"
39
40		#include "waiter/waiter.h"
41		#include "waiter/waiter_priv.h"
42		#include "waiter/mgt_waiter.h"
43
44		static int v_matchproto_(vbh_cmp_t)
45	5133	waited_cmp(void priv, const void a, const void *b)
46		{
47		const struct waiter *ww;
48		const struct waited aa, bb;
49
50	5133	CAST_OBJ_NOTNULL(ww, priv, WAITER_MAGIC);
51	5133	CAST_OBJ_NOTNULL(aa, a, WAITED_MAGIC);
52	5133	CAST_OBJ_NOTNULL(bb, b, WAITED_MAGIC);
53
54	5133	return (Wait_When(aa) < Wait_When(bb));
55		}
56
57		static void v_matchproto_(vbh_update_t)
58	99393	waited_update(void priv, void p, unsigned u)
59		{
60		struct waited *pp;
61
62	99393	(void)priv;
63	99393	CAST_OBJ_NOTNULL(pp, p, WAITED_MAGIC);
64	99393	pp->idx = u;
65	99393	}
66
67		/**********************************************************************/
68
69		void
70	45783	Wait_Call(const struct waiter w, struct waited wp,
71		enum wait_event ev, double now)
72		{
73	45783	CHECK_OBJ_NOTNULL(w, WAITER_MAGIC);
74	45783	CHECK_OBJ_NOTNULL(wp, WAITED_MAGIC);
75	45783	AN(wp->func);
76	45783	assert(wp->idx == VBH_NOIDX);
77	45783	wp->func(wp, ev, now);
78	45783	}
79
80		/**********************************************************************/
81
82		void
83	46330	Wait_HeapInsert(const struct waiter w, struct waited wp)
84		{
85	46330	CHECK_OBJ_NOTNULL(w, WAITER_MAGIC);
86	46330	CHECK_OBJ_NOTNULL(wp, WAITED_MAGIC);
87	46330	assert(wp->idx == VBH_NOIDX);
88	46330	VBH_insert(w->heap, wp);
89	46330	}
90
91		/*
92		* XXX: wp is const because otherwise FlexeLint complains. However, *wp
93		* XXX: will actually change as a result of calling this function, via
94		* XXX: the pointer stored in the bin-heap. I can see how this const
95		* XXX: could maybe confuse a compilers optimizer, but I do not expect
96		* XXX: any harm to come from it. Caveat Emptor.
97		*/
98
99		int
100	45782	Wait_HeapDelete(const struct waiter w, const struct waited wp)
101		{
102	45782	CHECK_OBJ_NOTNULL(w, WAITER_MAGIC);
103	45782	CHECK_OBJ_NOTNULL(wp, WAITED_MAGIC);
104	45782	if (wp->idx == VBH_NOIDX)
105	0	return (0);
106	45782	VBH_delete(w->heap, wp->idx);
107	45782	return (1);
108	45782	}
109
110		double
111	117650	Wait_HeapDue(const struct waiter w, struct waited *wpp)
112		{
113		struct waited *wp;
114
115	117650	wp = VBH_root(w->heap);
116	117650	CHECK_OBJ_ORNULL(wp, WAITED_MAGIC);
117	117650	if (wp == NULL) {
118	88768	if (wpp != NULL)
119	88768	*wpp = NULL;
120	88768	return (0);
121		}
122	28882	if (wpp != NULL)
123	27056	*wpp = wp;
124	28882	return (Wait_When(wp));
125	117650	}
126
127		/**********************************************************************/
128
129		int
130	46328	Wait_Enter(const struct waiter w, struct waited wp)
131		{
132
133	46328	CHECK_OBJ_NOTNULL(w, WAITER_MAGIC);
134	46328	CHECK_OBJ_NOTNULL(wp, WAITED_MAGIC);
135	46328	assert(wp->fd > 0); // stdin never comes here
136	46328	AN(wp->func);
137	46328	wp->idx = VBH_NOIDX;
138	46328	return (w->impl->enter(w->priv, wp));
139		}
140
141		/**********************************************************************/
142
143		const char *
144	297	Waiter_GetName(void)
145		{
146
147	297	if (waiter != NULL)
148	297	return (waiter->name);
149		else
150	0	return ("(No Waiter?)");
151	297	}
152
153		struct waiter *
154	43944	Waiter_New(void)
155		{
156		struct waiter *w;
157
158	43944	AN(waiter);
159	43944	AN(waiter->name);
160	43944	AN(waiter->init);
161	43944	AN(waiter->enter);
162	43944	AN(waiter->fini);
163
164	43944	w = calloc(1, sizeof (struct waiter) + waiter->size);
165	43944	AN(w);
166	43944	INIT_OBJ(w, WAITER_MAGIC);
167	43944	w->priv = (void*)(w + 1);
168	43944	w->impl = waiter;
169	43944	VTAILQ_INIT(&w->waithead);
170	43944	w->heap = VBH_new(w, waited_cmp, waited_update);
171
172	43944	waiter->init(w);
173
174	43944	return (w);
175		}
176
177		void
178	50	Waiter_Destroy(struct waiter **wp)
179		{
180		struct waiter *w;
181
182	50	TAKE_OBJ_NOTNULL(w, wp, WAITER_MAGIC);
183
184	50	AZ(VBH_root(w->heap));
185	50	AN(w->impl->fini);
186	50	w->impl->fini(w);
187	50	FREE_OBJ(w);
188	50	}