2 * Copyright (C) 2014 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; version 2.1 of
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with this library; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
24 #include <usterr-signal-safe.h>
25 #include <lttng/ust-getcpu.h>
26 #include <urcu/system.h>
27 #include <urcu/arch.h>
30 #include "../libringbuffer/getcpu.h"
32 int (*lttng_get_cpu
)(void);
37 int lttng_ust_getcpu_override(int (*getcpu
)(void))
39 CMM_STORE_SHARED(lttng_get_cpu
, getcpu
);
43 void lttng_ust_getcpu_init(void)
46 void (*libinit
)(void);
50 libname
= lttng_getenv("LTTNG_UST_GETCPU_PLUGIN");
53 getcpu_handle
= dlopen(libname
, RTLD_NOW
);
55 PERROR("Cannot load LTTng UST getcpu override library %s",
60 libinit
= (void (*)(void)) dlsym(getcpu_handle
,
61 "lttng_ust_getcpu_plugin_init");
63 PERROR("Cannot find LTTng UST getcpu override library %s initialization function lttng_ust_getcpu_plugin_init()",
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