Promise not to change fds in adns_beforepoll (if now is specified).

[adns.git] / src / adns.h

diff --git a/src/adns.h b/src/adns.h
index 9caf44f057454d1b87c764ac488081bb73163909..dac2f57868ce4415c542c0c253b87cae63d4c7cd 100644 (file)
--- a/src/adns.h
+++ b/src/adns.h
@@ -49,6 +49,8 @@ typedef enum {
   adns_if_noautosys=    0x0010, /* do not make syscalls at every opportunity */
   adns_if_eintr=        0x0020, /* allow _wait and _synchronous to return EINTR */
   adns_if_nosigpipe=    0x0040, /* applic has SIGPIPE set to SIG_IGN, do not protect */
+  adns_if_checkc_entex= 0x0100, /* do consistency checks on entry/exit to adns funcs */
+  adns_if_checkc_freq=  0x0300, /* do consistency checks very frequently (slow!) */
 } adns_initflags;
 
 typedef enum {
@@ -379,6 +381,13 @@ adns_query adns_forallqueries_next(adns_state ads, void **context_r);
  * context_r may be 0.  *context_r may not be set when _next returns 0.
  */
 
+void adns_checkconsistency(adns_state ads, adns_query qu);
+/* Checks the consistency of adns's internal data structures.
+ * If any error is found, the program will abort().
+ * You may pass 0 for qu; if you pass non-null then additional checks
+ * are done to make sure that qu is a valid query.
+ */
+
 /*
  * Example expected/legal calling sequence for submit/check/wait:
  *  adns_init
@@ -544,7 +553,7 @@ int adns_beforepoll(adns_state ads, struct pollfd *fds, int *nfds_io, int *timeo
  * in *nfds_io, and always return either 0 (if it is not interested in
  * any fds) or ERANGE (if it is).
  *
- * NOTE that (unless timeout_io is 0) adns may acquire additional fds
+ * NOTE that (unless now is 0) adns may acquire additional fds
  * from one call to the next, so you must put adns_beforepoll in a
  * loop, rather than assuming that the second call (with the buffer
  * size requested by the first) will not return ERANGE.
@@ -565,9 +574,11 @@ int adns_beforepoll(adns_state ads, struct pollfd *fds, int *nfds_io, int *timeo
  * adns_beforepoll will return 0 on success, and will not fail for any
  * reason other than the fds buffer being too small (ERANGE).
  *
- * This call will never actually do any I/O, or change the fds that
- * adns is using or the timeouts it wants; and in any case it won't
- * block.
+ * This call will never actually do any I/O.  If you supply the
+ * current time it will not change the fds that adns is using or the
+ * timeouts it wants.
+ *
+ * In any case this call won't block.
  */
 
 #define ADNS_POLLFDS_RECOMMENDED 2