1 // -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
2 // vim: ts=8 sw=2 smarttab
4 #include "common/TracepointProvider.h"
5 #include "common/config.h"
7 TracepointProvider::TracepointProvider(CephContext *cct, const char *library,
8 const char *config_key)
9 : m_cct(cct), m_library(library), m_config_keys{config_key, NULL},
10 m_lock("TracepointProvider::m_lock") {
11 m_cct->_conf->add_observer(this);
12 verify_config(m_cct->_conf);
15 TracepointProvider::~TracepointProvider() {
16 m_cct->_conf->remove_observer(this);
22 void TracepointProvider::handle_conf_change(
23 const struct md_config_t *conf, const std::set<std::string> &changed) {
24 if (changed.count(m_config_keys[0])) {
29 void TracepointProvider::verify_config(const struct md_config_t *conf) {
30 Mutex::Locker locker(m_lock);
37 if (conf->get_val(m_config_keys[0], &pbuf, sizeof(buf)) != 0 ||
38 strncmp(buf, "true", 5) != 0) {
42 m_handle = dlopen(m_library.c_str(), RTLD_NOW | RTLD_NODELETE);