sessiond: tsdl: remove useless std::move
[lttng-tools.git] / src / bin / lttng-sessiond / ust-registry.cpp
CommitLineData
d0b96690 1/*
ab5be9fa 2 * Copyright (C) 2013 David Goulet <dgoulet@efficios.com>
d0b96690 3 *
ab5be9fa 4 * SPDX-License-Identifier: GPL-2.0-only
d0b96690 5 *
d0b96690 6 */
890d8fe4 7
6c1c0768 8#define _LGPL_SOURCE
7972aab2 9
c9e313bc 10#include "ust-registry.hpp"
c9e313bc
SM
11#include "lttng-sessiond.hpp"
12#include "notification-thread-commands.hpp"
d7bfb9b0 13#include "ust-app.hpp"
b0f2e8db
JG
14#include "ust-registry-session-pid.hpp"
15#include "ust-registry-session-uid.hpp"
d7bfb9b0 16#include "utils.hpp"
d0b96690 17
d7bfb9b0
JG
18#include <common/common.hpp>
19#include <common/exception.hpp>
20#include <common/format.hpp>
21#include <common/hashtable/utils.hpp>
22#include <common/make-unique-wrapper.hpp>
23#include <lttng/lttng.h>
10b56aef 24
d7bfb9b0 25#include <inttypes.h>
3b016e58 26
d7bfb9b0
JG
27namespace ls = lttng::sessiond;
28namespace lst = lttng::sessiond::trace;
29namespace lsu = lttng::sessiond::ust;
10b56aef 30
d0b96690
DG
31/*
32 * Destroy event function call of the call RCU.
33 */
d7bfb9b0 34static void ust_registry_event_destroy_rcu(struct rcu_head *head)
d0b96690 35{
d7bfb9b0
JG
36 DIAGNOSTIC_PUSH
37 DIAGNOSTIC_IGNORE_INVALID_OFFSETOF
38 lttng::sessiond::ust::registry_event *event =
f139a4f9 39 lttng::utils::container_of(head, &lttng::sessiond::ust::registry_event::_head);
d7bfb9b0
JG
40 DIAGNOSTIC_POP
41
42 lttng::sessiond::ust::registry_event_destroy(event);
d0b96690
DG
43}
44
45/*
46 * For a given event in a registry, delete the entry and destroy the event.
47 * This MUST be called within a RCU read side lock section.
48 */
d7bfb9b0
JG
49void ust_registry_channel_destroy_event(lsu::registry_channel *chan,
50 lttng::sessiond::ust::registry_event *event)
d0b96690
DG
51{
52 int ret;
53 struct lttng_ht_iter iter;
54
a0377dfe
FD
55 LTTNG_ASSERT(chan);
56 LTTNG_ASSERT(event);
48b7cdc2 57 ASSERT_RCU_READ_LOCKED();
d0b96690
DG
58
59 /* Delete the node first. */
f139a4f9 60 iter.iter.node = &event->_node;
d7bfb9b0 61 ret = lttng_ht_del(chan->_events, &iter);
a0377dfe 62 LTTNG_ASSERT(!ret);
d0b96690 63
f139a4f9 64 call_rcu(&event->_head, ust_registry_event_destroy_rcu);
d0b96690
DG
65
66 return;
67}
68
b0f2e8db 69lsu::registry_session *ust_registry_session_per_uid_create(const lttng::sessiond::trace::abi& abi,
af6142cf 70 uint32_t major,
d7ba1388 71 uint32_t minor,
3d071855 72 const char *root_shm_path,
d7ba1388
MD
73 const char *shm_path,
74 uid_t euid,
8de88061
JR
75 gid_t egid,
76 uint64_t tracing_id,
77 uid_t tracing_uid)
d0b96690 78{
aeeb48c6 79 try {
b0f2e8db 80 return new lsu::registry_session_per_uid(abi, major, minor, root_shm_path, shm_path,
aeeb48c6 81 euid, egid, tracing_id, tracing_uid);
d7bfb9b0 82 } catch (const std::exception& ex) {
aeeb48c6
JG
83 ERR("Failed to create per-uid registry session: %s", ex.what());
84 return nullptr;
d7ba1388 85 }
aeeb48c6 86}
8de88061 87
b0f2e8db 88lsu::registry_session *ust_registry_session_per_pid_create(struct ust_app *app,
d7bfb9b0 89 const lttng::sessiond::trace::abi& abi,
aeeb48c6
JG
90 uint32_t major,
91 uint32_t minor,
92 const char *root_shm_path,
93 const char *shm_path,
94 uid_t euid,
95 gid_t egid,
96 uint64_t tracing_id)
97{
98 try {
b0f2e8db 99 return new lsu::registry_session_per_pid(*app, abi, major, minor, root_shm_path,
d7bfb9b0
JG
100 shm_path, euid, egid, tracing_id);
101 } catch (const std::exception& ex) {
aeeb48c6
JG
102 ERR("Failed to create per-pid registry session: %s", ex.what());
103 return nullptr;
d0b96690 104 }
d0b96690
DG
105}
106
107/*
108 * Destroy session registry. This does NOT free the given pointer since it
109 * might get passed as a reference. The registry lock should NOT be acquired.
110 */
b0f2e8db 111void ust_registry_session_destroy(lsu::registry_session *reg)
d0b96690 112{
aeeb48c6 113 delete reg;
d0b96690 114}
d7bfb9b0
JG
115
116lsu::registry_enum::registry_enum(
117 std::string in_name, enum lst::integer_type::signedness in_signedness) :
118 name{std::move(in_name)}, signedness{in_signedness}
119{
120 cds_lfht_node_init(&this->node.node);
121 this->rcu_head = {};
122}
123
124bool lsu::operator==(const lsu::registry_enum& lhs, const lsu::registry_enum& rhs) noexcept
125{
126 if (lhs.signedness != rhs.signedness) {
127 return false;
128 }
129
130 return lhs._is_equal(rhs);
131}
This page took 0.088239 seconds and 4 git commands to generate.