i3bar: Add a macro to log child info

Mentioned in #3242

1 files changed, 13 insertions, 0 deletions

diff --git a/i3bar/src/child.c b/i3bar/src/child.c
index b145e5d5..9c6325c1 100644
--- a/i3bar/src/child.c
+++ b/i3bar/src/child.c
@@ -32,6 +32,8 @@
 
 /* Global variables for child_*() */
 i3bar_child child;
+#define DLOG_CHILD DLOG("%s: pid=%ld stopped=%d stop_signal=%d cont_signal=%d click_events=%d click_events_init=%d\n", \
+                        __func__, (long)child.pid, child.stopped, child.stop_signal, child.cont_signal, child.click_events, child.click_events_init)
 
 /* stdin- and SIGCHLD-watchers */
 ev_io *stdin_io;
@@ -604,9 +606,12 @@ void start_child(char *command) {
     ev_child_start(main_loop, child_sig);
 
     atexit(kill_child_at_exit);
+    DLOG_CHILD;
 }
 
 static void child_click_events_initialize(void) {
+    DLOG_CHILD;
+
     if (!child.click_events_init) {
         yajl_gen_array_open(gen);
         child_write_output();
@@ -685,6 +690,8 @@ void send_block_clicked(int button, const char *name, const char *instance, int
  *
  */
 void kill_child_at_exit(void) {
+    DLOG_CHILD;
+
     if (child.pid > 0) {
         if (child.cont_signal > 0 && child.stopped)
             killpg(child.pid, child.cont_signal);
@@ -698,6 +705,8 @@ void kill_child_at_exit(void) {
  *
  */
 void kill_child(void) {
+    DLOG_CHILD;
+
     if (child.pid > 0) {
         if (child.cont_signal > 0 && child.stopped)
             killpg(child.pid, child.cont_signal);
@@ -713,6 +722,8 @@ void kill_child(void) {
  *
  */
 void stop_child(void) {
+    DLOG_CHILD;
+
     if (child.stop_signal > 0 && !child.stopped) {
         child.stopped = true;
         killpg(child.pid, child.stop_signal);
@@ -724,6 +735,8 @@ void stop_child(void) {
  *
  */
 void cont_child(void) {
+    DLOG_CHILD;
+
     if (child.cont_signal > 0 && child.stopped) {
         child.stopped = false;
         killpg(child.pid, child.cont_signal);