module load priority

This patch adds the option to give a module a load priority. The value represents the order in which a module's load() function is initialized.  The lower the value, the higher the priority.  The value is only checked if the AST_MODFLAG_LOAD_ORDER flag is set.  If the AST_MODFLAG_LOAD_ORDER flag is not set, the value will never be read and the module will be given the lowest possible priority
on load.  Since some modules are reliant on a timing interface, the timing modules have been given a high load priorty.

(closes issue #15191)
Reported by: alecdavis
Tested by: dvossel

Review: https://reviewboard.asterisk.org/r/262/


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@199743 65c4cc65-6c06-0410-ace0-fbb531ad65f3

1 files changed, 8 insertions, 0 deletions

diff --git a/include/asterisk/module.h b/include/asterisk/module.h
index 3ffe0b7d8..e7aec449f 100644
--- a/include/asterisk/module.h
+++ b/include/asterisk/module.h
@@ -189,6 +189,7 @@ struct ast_module_user_list;
 enum ast_module_flags {
 	AST_MODFLAG_DEFAULT = 0,
 	AST_MODFLAG_GLOBAL_SYMBOLS = (1 << 0),
+	AST_MODFLAG_LOAD_ORDER = (1 << 1),
 };
 
 struct ast_module_info {
@@ -219,6 +220,13 @@ struct ast_module_info {
 
 	/*! The value of AST_BUILDOPT_SUM when this module was compiled */
 	const char buildopt_sum[33];
+
+	/*! This value represents the order in which a module's load() function is initialized.
+	 *  The lower this value, the higher the priority.  The value is only checked if the
+	 *  AST_MODFLAG_LOAD_ORDER flag is set.  If the AST_MODFLAG_LOAD_ORDER flag is not set,
+	 *  this value will never be read and the module will be given the lowest possible priority
+	 *  on load. */
+	unsigned char load_pri;
 };
 
 void ast_module_register(const struct ast_module_info *);