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loader: Improve error handling.

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* Display list of unavailable dependencies when they cause another
  module to fail loading.
* When a module declines to load find all modules which depend on it so
  they can be declined and listed together.
* Prevent retry of declined modules during startup.
* When a module fails to dlopen try loading it with RTLD_LAZY so we can
  attempt to display the list of missing dependencies.

These changes are meant to reduce logger spam that is caused when a
module has many dependencies and declines to load.  This also fixes some
error paths which failed to recognize required modules.

Module load/start errors are delayed until the end of loader startup.

Change-Id: I046052c71331c556c09d39f47a3b92975f3e1758
This commit is contained in:
Corey Farrell
2018-09-28 11:13:39 -04:00
parent 252e4a8fd4
commit e4cf513f81
3 changed files with 258 additions and 32 deletions
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12
main/logger.c
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@@ -2004,18 +2004,24 @@ static void __attribute__((format(printf, 7, 0))) ast_log_full(int level, int su
void ast_log(int level, const char *file, int line, const char *function, const char *fmt, ...)
{
ast_callid callid;
va_list ap;
va_start(ap, fmt);
ast_log_ap(level, file, line, function, fmt, ap);
va_end(ap);
}
void ast_log_ap(int level, const char *file, int line, const char *function, const char *fmt, va_list ap)
{
ast_callid callid;
callid = ast_read_threadstorage_callid();
va_start(ap, fmt);
if (level == __LOG_VERBOSE) {
__ast_verbose_ap(file, line, function, 0, callid, fmt, ap);
} else {
ast_log_full(level, -1, file, line, function, callid, fmt, ap);
}
va_end(ap);
}
void ast_log_safe(int level, const char *file, int line, const char *function, const char *fmt, ...)