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Add a really wacky debug message

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This commit is contained in:
Mike Brady
2020-05-28 16:15:15 +01:00
parent 9ae649fa9a
commit c099105a57
1 changed files with 16 additions and 1 deletions
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metadata_hub.c
+16 -1
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@@ -127,14 +127,26 @@ void metadata_hub_unlock_hub_mutex_cleanup(__attribute__((unused)) void *arg) {
pthread_rwlock_unlock(&metadata_hub_re_lock);
}
char *last_metadata_hub_modify_prolog_file = NULL;
int last_metadata_hub_modify_prolog_line;
void _metadata_hub_modify_prolog(const char *filename, const int linenumber) {
// always run this before changing an entry or a sequence of entries in the metadata_hub
// debug(1, "locking metadata hub for writing");
if (pthread_rwlock_trywrlock(&metadata_hub_re_lock) != 0) {
debug(1, "Metadata_hub write lock is already taken -- must wait.");
if (last_metadata_hub_modify_prolog_file)
debug(1, "Metadata_hub write lock is already taken at \"%s:%d\" -- must wait.", last_metadata_hub_modify_prolog_file, last_metadata_hub_modify_prolog_line);
else
debug(1, "Metadata_hub write lock is already taken by unknown -- must wait.");
pthread_rwlock_wrlock(&metadata_hub_re_lock);
debug(1, "Okay -- acquired the metadata_hub write lock.");
} else {
if (last_metadata_hub_modify_prolog_file) {
free(last_metadata_hub_modify_prolog_file);
}
last_metadata_hub_modify_prolog_file = strdup(filename);
last_metadata_hub_modify_prolog_line = linenumber;
debug(3, "Metadata_hub write lock acquired.");
}
}
@@ -145,6 +157,9 @@ void _metadata_hub_modify_epilog(int modified, const char *filename, const int l
if (modified) {
run_metadata_watchers();
}
if (last_metadata_hub_modify_prolog_file) {
free(last_metadata_hub_modify_prolog_file);
}
pthread_rwlock_unlock(&metadata_hub_re_lock);
debug(3, "Metadata_hub write lock unlocked.");
}