GCOV - Varnish Cache


/*-
 * Copyright 2021,2023 UPLEX - Nils Goroll Systemoptimierung
 * All rights reserved.
 *
 * Author: Nils Goroll <nils.goroll@uplex.de>
 *
 * 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.
 *
 * debug helper storage based on malloc
 */

#include "config.h"

#include "cache/cache_varnishd.h"
#include "cache/cache_obj.h"

#include <stdio.h>
#include <stdlib.h>

#include "storage/storage.h"
#include "storage/storage_simple.h"

#include "vtim.h"
#include "vnum.h"

/* we cheat and make the open delay a static to avoid
 * having to wrap all callbacks to unpack the priv
 * pointer. Consequence: last dopen applies to all
 * debug stevedores
 */
static vtim_dur dopen = 0.0;

/* returns one byte less than requested */
static int v_matchproto_(objgetspace_f)
smd_lsp_getspace(struct worker *wrk, struct objcore *oc, ssize_t *sz,
    uint8_t **ptr)
{
        AN(sz);
        if (*sz > 2)
                (*sz)--;
        return (SML_methods.objgetspace(wrk, oc, sz, ptr));
}

#define dur_arg(a, s, d)                                        \
        (! strncmp((a), (s), strlen(s))                         \
         && (d = VNUM_duration(a + strlen(s))) != nan(""))

static void smd_open(struct stevedore *stv)
{
        sma_stevedore.open(stv);
        fprintf(stderr, "-sdebug open delay %fs\n", dopen);
        if (dopen > 0.0)
                VTIM_sleep(dopen);
}

static void v_matchproto_(storage_init_f)
smd_init(struct stevedore *parent, int aac, char * const *aav)
{
        struct obj_methods *methods;
        const char *ident;
        int i, ac = 0;
        size_t nac;
        vtim_dur d, dinit = 0.0;
        char **av;      //lint -e429
        char *a;

        ident = parent->ident;
        memcpy(parent, &sma_stevedore, sizeof *parent);
        parent->ident = ident;
        parent->name = smd_stevedore.name;

        methods = malloc(sizeof *methods);
        AN(methods);
        memcpy(methods, &SML_methods, sizeof *methods);
        parent->methods = methods;

        assert(aac >= 0);
        nac = aac;
        nac++;
        av = calloc(nac, sizeof *av);
        AN(av);
        for (i = 0; i < aac; i++) {
                a = aav[i];
                if (a != NULL) {
                        if (! strcmp(a, "lessspace")) {
                                methods->objgetspace = smd_lsp_getspace;
                                continue;
                        }
                        if (dur_arg(a, "dinit=", d)) {
                                dinit = d;
                                continue;
                        }
                        if (dur_arg(a, "dopen=", d)) {
                                dopen = d;
                                continue;
                        }
                }
                av[ac] = a;
                ac++;
        }
        assert(ac >= 0);
        assert(ac < (int)nac);
        AZ(av[ac]);

        sma_stevedore.init(parent, ac, av);
        free(av);
        fprintf(stderr, "-sdebug init delay %fs\n", dinit);
        fprintf(stderr, "-sdebug open delay in init %fs\n", dopen);
        if (dinit > 0.0) {
                VTIM_sleep(dinit);
        }
        parent->open = smd_open;
}

const struct stevedore smd_stevedore = {
        .magic          =       STEVEDORE_MAGIC,
        .name           =       "debug",
        .init           =       smd_init,
        // other callbacks initialized in smd_init()
};

		varnish-cache/bin/varnishd/storage/storage_debug.c
0		/*-
1		* Copyright 2021,2023 UPLEX - Nils Goroll Systemoptimierung
2		* All rights reserved.
3		*
4		* Author: Nils Goroll <nils.goroll@uplex.de>
5		*
6		* SPDX-License-Identifier: BSD-2-Clause
7		*
8		* Redistribution and use in source and binary forms, with or without
9		* modification, are permitted provided that the following conditions
10		* are met:
11		* 1. Redistributions of source code must retain the above copyright
12		* notice, this list of conditions and the following disclaimer.
13		* 2. Redistributions in binary form must reproduce the above copyright
14		* notice, this list of conditions and the following disclaimer in the
15		* documentation and/or other materials provided with the distribution.
16		*
17		* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18		* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19		* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20		* ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
21		* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22		* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23		* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24		* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25		* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26		* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27		* SUCH DAMAGE.
28		*
29		* debug helper storage based on malloc
30		*/
31
32		#include "config.h"
33
34		#include "cache/cache_varnishd.h"
35		#include "cache/cache_obj.h"
36
37		#include <stdio.h>
38		#include <stdlib.h>
39
40		#include "storage/storage.h"
41		#include "storage/storage_simple.h"
42
43		#include "vtim.h"
44		#include "vnum.h"
45
46		/* we cheat and make the open delay a static to avoid
47		* having to wrap all callbacks to unpack the priv
48		* pointer. Consequence: last dopen applies to all
49		* debug stevedores
50		*/
51		static vtim_dur dopen = 0.0;
52
53		/* returns one byte less than requested */
54		static int v_matchproto_(objgetspace_f)
55	80	smd_lsp_getspace(struct worker wrk, struct objcore oc, ssize_t *sz,
56		uint8_t **ptr)
57		{
58	80	AN(sz);
59	80	if (*sz > 2)
60	40	(*sz)--;
61	80	return (SML_methods.objgetspace(wrk, oc, sz, ptr));
62		}
63
64		#define dur_arg(a, s, d) \
65		(! strncmp((a), (s), strlen(s)) \
66		&& (d = VNUM_duration(a + strlen(s))) != nan(""))
67
68	191	static void smd_open(struct stevedore *stv)
69		{
70	191	sma_stevedore.open(stv);
71	191	fprintf(stderr, "-sdebug open delay %fs\n", dopen);
72	191	if (dopen > 0.0)
73	80	VTIM_sleep(dopen);
74	191	}
75
76		static void v_matchproto_(storage_init_f)
77	196	smd_init(struct stevedore parent, int aac, char const *aav)
78		{
79		struct obj_methods *methods;
80		const char *ident;
81	196	int i, ac = 0;
82		size_t nac;
83	196	vtim_dur d, dinit = 0.0;
84		char **av; //lint -e429
85		char *a;
86
87	196	ident = parent->ident;
88	196	memcpy(parent, &sma_stevedore, sizeof *parent);
89	196	parent->ident = ident;
90	196	parent->name = smd_stevedore.name;
91
92	196	methods = malloc(sizeof *methods);
93	196	AN(methods);
94	196	memcpy(methods, &SML_methods, sizeof *methods);
95	196	parent->methods = methods;
96
97	196	assert(aac >= 0);
98	196	nac = aac;
99	196	nac++;
100	196	av = calloc(nac, sizeof *av);
101	196	AN(av);
102	392	for (i = 0; i < aac; i++) {
103	196	a = aav[i];
104	196	if (a != NULL) {
105	196	if (! strcmp(a, "lessspace")) {
106	40	methods->objgetspace = smd_lsp_getspace;
107	40	continue;
108		}
109	156	if (dur_arg(a, "dinit=", d)) {
110	76	dinit = d;
111	76	continue;
112		}
113	80	if (dur_arg(a, "dopen=", d)) {
114	80	dopen = d;
115	80	continue;
116		}
117	0	}
118	0	av[ac] = a;
119	0	ac++;
120	0	}
121	196	assert(ac >= 0);
122	196	assert(ac < (int)nac);
123	196	AZ(av[ac]);
124
125	196	sma_stevedore.init(parent, ac, av);
126	196	free(av);
127	196	fprintf(stderr, "-sdebug init delay %fs\n", dinit);
128	196	fprintf(stderr, "-sdebug open delay in init %fs\n", dopen);
129	196	if (dinit > 0.0) {
130	76	VTIM_sleep(dinit);
131	76	}
132	196	parent->open = smd_open;
133	196	}
134
135		const struct stevedore smd_stevedore = {
136		.magic = STEVEDORE_MAGIC,
137		.name = "debug",
138		.init = smd_init,
139		// other callbacks initialized in smd_init()
140		};