Move the getcpu plugin implementation to liblttn-ust-common

[lttng-ust.git] / src / lib / lttng-ust / getcpu.c

diff --git a/src/lib/lttng-ust/getcpu.c b/src/lib/lttng-ust/getcpu.c
deleted file mode 100644 (file)
index 149491c..0000000
--- a/src/lib/lttng-ust/getcpu.c
+++ /dev/null
@@ -1,75 +0,0 @@
-/*
- * SPDX-License-Identifier: LGPL-2.1-only
- *
- * Copyright (C) 2014 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
- */
-
-#define _LGPL_SOURCE
-#include <dlfcn.h>
-#include <stdlib.h>
-#include "common/logging.h"
-#include <urcu/system.h>
-#include <urcu/arch.h>
-
-#include "common/getenv.h"
-#include "lib/lttng-ust/getcpu.h"
-
-/* Function pointer to the current getcpu callback. */
-int (*lttng_ust_get_cpu_sym)(void);
-
-static
-void *getcpu_plugin_handle;
-
-/*
- * Override the user provided getcpu implementation.
- */
-int lttng_ust_getcpu_override(int (*getcpu)(void))
-{
-       CMM_STORE_SHARED(lttng_ust_get_cpu_sym, getcpu);
-       return 0;
-}
-
-/*
- * Initialize the getcpu plugin if it's present.
- */
-void lttng_ust_getcpu_plugin_init(void)
-{
-       const char *libname;
-       void (*getcpu_plugin_init)(void);
-
-       /* If a plugin is already loaded, do nothing. */
-       if (getcpu_plugin_handle)
-               return;
-
-       /*
-        * If the LTTNG_UST_GETCPU_PLUGIN environment variable is undefined, do
-        * nothing.
-        */
-       libname = lttng_ust_getenv("LTTNG_UST_GETCPU_PLUGIN");
-       if (!libname)
-               return;
-
-       /*
-        * Thy to dlopen the getcpu plugin shared object specified in
-        * LTTNG_UST_GETCPU_PLUGIN.
-        */
-       getcpu_plugin_handle = dlopen(libname, RTLD_NOW);
-       if (!getcpu_plugin_handle) {
-               PERROR("Cannot load LTTng UST getcpu override library %s",
-                       libname);
-               return;
-       }
-       dlerror();
-
-       /* Locate the getcpu plugin init function in the shared object. */
-       getcpu_plugin_init = (void (*)(void)) dlsym(getcpu_plugin_handle,
-               "lttng_ust_getcpu_plugin_init");
-       if (!getcpu_plugin_init) {
-               PERROR("Cannot find LTTng UST getcpu override library %s initialization function lttng_ust_getcpu_plugin_init()",
-                       libname);
-               return;
-       }
-
-       /* Run the user provided getcpu plugin init function. */
-       getcpu_plugin_init();
-}