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@kilobyte @ldorau
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/*
* Copyright 2019, Intel Corporation
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * 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.
*
* * Neither the name of the copyright holder nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 THE COPYRIGHT
* OWNER 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 <libvmemcache.h>
#include <stdio.h>
#include <string.h>
#define STR_AND_LEN(x) (x), strlen(x)
static VMEMcache *cache;
static void
on_miss(VMEMcache *cache, const void *key, size_t key_size, void *arg)
{
vmemcache_put(cache, STR_AND_LEN("meow"),
STR_AND_LEN("Cthulhu fthagn"));
}
static void
get(const char *key)
{
char buf[128];
ssize_t len = vmemcache_get(cache, STR_AND_LEN(key),
buf, sizeof(buf), 0, NULL);
if (len >= 0)
printf("%.*s\n", (int)len, buf);
else
printf("(key not found: %s)\n", key);
}
int
main()
{
cache = vmemcache_new();
if (vmemcache_add(cache, "/tmp")) {
fprintf(stderr, "error: vmemcache_add: %s\n",
vmemcache_errormsg());
return 1;
}
/* Query a non-existent key. */
get("meow");
/* Insert then query. */
vmemcache_put(cache, STR_AND_LEN("bark"), STR_AND_LEN("Lorem ipsum"));
get("bark");
/* Install an on-miss handler. */
vmemcache_callback_on_miss(cache, on_miss, 0);
get("meow");
vmemcache_delete(cache);
return 0;
}
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