mirror of
https://github.com/MariaDB/server.git
synced 2025-01-15 19:42:28 +01:00
65 lines
1.9 KiB
C
65 lines
1.9 KiB
C
/* Copyright (c) 2002, 2015, Oracle and/or its affiliates.
|
|
Copyright (c) 2012, 2017, MariaDB Corporation.
|
|
|
|
This program is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; version 2 of the License.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program; if not, write to the Free Software
|
|
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
|
|
|
|
/* guess_malloc_library() deduces, to the best of its ability,
|
|
the currently used malloc library and its version */
|
|
|
|
#include <stddef.h>
|
|
#include "my_global.h"
|
|
#include <m_string.h>
|
|
|
|
typedef const char* (*tc_version_type)(int*, int*, const char**);
|
|
typedef int (*mallctl_type)(const char*, void*, size_t*, void*, size_t);
|
|
|
|
char *guess_malloc_library()
|
|
{
|
|
tc_version_type tc_version_func;
|
|
mallctl_type mallctl_func;
|
|
#ifndef HAVE_DLOPEN
|
|
return (char*) MALLOC_LIBRARY;
|
|
#else
|
|
static char buf[128];
|
|
|
|
if (strcmp(MALLOC_LIBRARY, "system") != 0)
|
|
{
|
|
return (char*) MALLOC_LIBRARY;
|
|
}
|
|
|
|
/* tcmalloc */
|
|
tc_version_func= (tc_version_type) dlsym(RTLD_DEFAULT, "tc_version");
|
|
if (tc_version_func)
|
|
{
|
|
int major, minor;
|
|
const char* ver_str = tc_version_func(&major, &minor, NULL);
|
|
strxnmov(buf, sizeof(buf)-1, "tcmalloc ", ver_str, NULL);
|
|
return buf;
|
|
}
|
|
|
|
/* jemalloc */
|
|
mallctl_func= (mallctl_type) dlsym(RTLD_DEFAULT, "mallctl");
|
|
if (mallctl_func)
|
|
{
|
|
char *ver;
|
|
size_t len = sizeof(ver);
|
|
mallctl_func("version", &ver, &len, NULL, 0);
|
|
strxnmov(buf, sizeof(buf)-1, "jemalloc ", ver, NULL);
|
|
return buf;
|
|
}
|
|
|
|
return (char*) MALLOC_LIBRARY;
|
|
#endif
|
|
}
|
|
|