Run clang-format on the whole tree
[lttng-tools.git] / src / bin / lttng-sessiond / manage-apps.cpp
index 588e83b6c495ef4f1b8c50f805e46e86c97fea5c..8e7f50900bc32bbdf66816f132d89ebad775ff82 100644 (file)
@@ -7,16 +7,18 @@
  *
  */
 
-#include "manage-apps.h"
-#include "testpoint.h"
-#include "health-sessiond.h"
-#include "utils.h"
-#include "thread.h"
+#include "health-sessiond.hpp"
+#include "manage-apps.hpp"
+#include "testpoint.hpp"
+#include "thread.hpp"
+#include "utils.hpp"
 
+namespace {
 struct thread_notifiers {
        struct lttng_pipe *quit_pipe;
        int apps_cmd_pipe_read_fd;
 };
+} /* namespace */
 
 static void cleanup_application_management_thread(void *data)
 {
@@ -41,13 +43,12 @@ static void cleanup_application_management_thread(void *data)
  */
 static void *thread_application_management(void *data)
 {
-       int i, ret, pollfd, err = -1;
+       int i, ret, err = -1;
        ssize_t size_ret;
-       uint32_t revents, nb_fd;
+       uint32_t nb_fd;
        struct lttng_poll_event events;
        struct thread_notifiers *notifiers = (thread_notifiers *) data;
-       const int quit_pipe_read_fd = lttng_pipe_get_readfd(
-                       notifiers->quit_pipe);
+       const auto thread_quit_pipe_fd = lttng_pipe_get_readfd(notifiers->quit_pipe);
 
        DBG("[thread] Manage application started");
 
@@ -67,13 +68,12 @@ static void *thread_application_management(void *data)
                goto error_poll_create;
        }
 
-       ret = lttng_poll_add(&events, notifiers->apps_cmd_pipe_read_fd,
-                       LPOLLIN | LPOLLRDHUP);
+       ret = lttng_poll_add(&events, notifiers->apps_cmd_pipe_read_fd, LPOLLIN | LPOLLRDHUP);
        if (ret < 0) {
                goto error;
        }
 
-       ret = lttng_poll_add(&events, quit_pipe_read_fd, LPOLLIN | LPOLLERR);
+       ret = lttng_poll_add(&events, thread_quit_pipe_fd, LPOLLIN);
        if (ret < 0) {
                goto error;
        }
@@ -91,8 +91,7 @@ static void *thread_application_management(void *data)
        restart:
                health_poll_entry();
                ret = lttng_poll_wait(&events, -1);
-               DBG("Apps thread return from poll on %d fds",
-                               LTTNG_POLL_GETNB(&events));
+               DBG("Apps thread return from poll on %d fds", LTTNG_POLL_GETNB(&events));
                health_poll_exit();
                if (ret < 0) {
                        /*
@@ -108,23 +107,27 @@ static void *thread_application_management(void *data)
 
                for (i = 0; i < nb_fd; i++) {
                        /* Fetch once the poll data */
-                       revents = LTTNG_POLL_GETEV(&events, i);
-                       pollfd = LTTNG_POLL_GETFD(&events, i);
+                       const auto revents = LTTNG_POLL_GETEV(&events, i);
+                       const auto pollfd = LTTNG_POLL_GETFD(&events, i);
 
                        health_code_update();
 
-                       if (pollfd == quit_pipe_read_fd) {
+                       /* Activity on thread quit pipe, exiting. */
+                       if (pollfd == thread_quit_pipe_fd) {
+                               DBG("Activity on thread quit pipe");
                                err = 0;
                                goto exit;
-                       } else if (pollfd == notifiers->apps_cmd_pipe_read_fd) {
+                       }
+
+                       if (pollfd == notifiers->apps_cmd_pipe_read_fd) {
                                /* Inspect the apps cmd pipe */
                                if (revents & LPOLLIN) {
                                        int sock;
 
                                        /* Empty pipe */
-                                       size_ret = lttng_read(
-                                                       notifiers->apps_cmd_pipe_read_fd,
-                                                       &sock, sizeof(sock));
+                                       size_ret = lttng_read(notifiers->apps_cmd_pipe_read_fd,
+                                                             &sock,
+                                                             sizeof(sock));
                                        if (size_ret < sizeof(sock)) {
                                                PERROR("read apps cmd pipe");
                                                goto error;
@@ -136,8 +139,7 @@ static void *thread_application_management(void *data)
                                         * Since this is a command socket (write then read),
                                         * we only monitor the error events of the socket.
                                         */
-                                       ret = lttng_poll_add(&events, sock,
-                                                       LPOLLERR | LPOLLHUP | LPOLLRDHUP);
+                                       ret = lttng_poll_add(&events, sock, LPOLLRDHUP);
                                        if (ret < 0) {
                                                goto error;
                                        }
@@ -165,7 +167,9 @@ static void *thread_application_management(void *data)
                                        /* Socket closed on remote end. */
                                        ust_app_unregister(pollfd);
                                } else {
-                                       ERR("Unexpected poll events %u for sock %d", revents, pollfd);
+                                       ERR("Unexpected poll events %u for sock %d",
+                                           revents,
+                                           pollfd);
                                        goto error;
                                }
                        }
@@ -211,7 +215,7 @@ bool launch_application_management_thread(int apps_cmd_pipe_read_fd)
        struct thread_notifiers *notifiers = NULL;
        struct lttng_thread *thread;
 
-       notifiers = (thread_notifiers *) zmalloc(sizeof(*notifiers));
+       notifiers = zmalloc<thread_notifiers>();
        if (!notifiers) {
                goto error_alloc;
        }
@@ -223,10 +227,10 @@ bool launch_application_management_thread(int apps_cmd_pipe_read_fd)
        notifiers->apps_cmd_pipe_read_fd = apps_cmd_pipe_read_fd;
 
        thread = lttng_thread_create("UST application management",
-                       thread_application_management,
-                       shutdown_application_management_thread,
-                       cleanup_application_management_thread,
-                       notifiers);
+                                    thread_application_management,
+                                    shutdown_application_management_thread,
+                                    cleanup_application_management_thread,
+                                    notifiers);
        if (!thread) {
                goto error;
        }
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