AP_ function for optional hooks.

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@89178 13f79535-47bb-0310-9956-ffa450edef68

1 files changed, 22 insertions, 0 deletions

diff --git a/include/ap_config.h b/include/ap_config.h
index 3e61ca69f8..e961a903e4 100644
--- a/include/ap_config.h
+++ b/include/ap_config.h
@@ -57,6 +57,7 @@
 
 #include "apr.h"
 #include "apr_hooks.h"
+#include "apr_optional_hooks.h"
 
 /**
  * @file ap_config.h
@@ -229,6 +230,27 @@
 	APR_IMPLEMENT_EXTERNAL_HOOK_RUN_FIRST(ap,AP,ret,name,args_decl, \
                                               args_use,decline)
 
+/* Note that the other optional hook implementations are straightforward but
+ * have not yet been needed
+ */
+
+/**
+ * Implement an optional hook. This is exactly the same as a standard hook
+ * implementation, except the hook is optional.
+ * @see AP_IMPLEMENT_HOOK_RUN_ALL
+ */
+#define AP_IMPLEMENT_OPTIONAL_HOOK_RUN_ALL(ret,name,args_decl,args_use,ok, \
+					   decline) \
+	APR_IMPLEMENT_OPTIONAL_HOOK_RUN_ALL(ap,AP,ret,name,args_decl, \
+                                            args_use,ok,decline)
+
+/**
+ * Hook an optional hook. Unlike static hooks, this uses a macro instead of a
+ * function
+ */
+#define AP_OPTIONAL_HOOK(name,fn,pre,succ,order) \
+        APR_OPTIONAL_HOOK(ap,name,fn,pre,succ,order)
+
 #include "os.h"
 #ifndef WIN32
 #include "ap_config_auto.h"