From 1dcb99f0f7d0efe70c82fcc70728276444848cda Mon Sep 17 00:00:00 2001
From: Gisle Vanem <gvanem@broadpark.no>
Date: Mon, 11 Jun 2007 04:33:21 +0000
Subject: [PATCH] constify 'hostname' in init_thread_sync_data(). Simply clear
 the whole 'tsd' structure on exit in destroy_thread_sync_data().

---
 lib/hostthre.c | 21 ++++++++-------------
 1 file changed, 8 insertions(+), 13 deletions(-)

diff --git a/lib/hostthre.c b/lib/hostthre.c
index 15f6b3fd7..aebed8b38 100644
--- a/lib/hostthre.c
+++ b/lib/hostthre.c
@@ -179,28 +179,21 @@ struct thread_sync_data {
 static
 void destroy_thread_sync_data(struct thread_sync_data * tsd)
 {
-  if (tsd->hostname) {
+  if (tsd->hostname)
     free(tsd->hostname);
-    tsd->hostname = NULL;
-  }
-  if (tsd->event_terminate) {
+  if (tsd->event_terminate)
     CloseHandle(tsd->event_terminate);
-    tsd->event_terminate = NULL;
-  }
-  if (tsd->mutex_terminate) {
+  if (tsd->mutex_terminate)
     CloseHandle(tsd->mutex_terminate);
-    tsd->mutex_terminate = NULL;
-  }
-  if (tsd->mutex_waiting) {
+  if (tsd->mutex_waiting)
     CloseHandle(tsd->mutex_waiting);
-    tsd->mutex_waiting = NULL;
-  }
+  memset(tsd,0,sizeof(*tsd));
 }
 
 /* Initialize resolver thread synchronization data */
 static
 BOOL init_thread_sync_data(struct thread_data * td,
-                           char * hostname,
+                           const char * hostname,
                            struct thread_sync_data * tsd)
 {
   HANDLE curr_proc = GetCurrentProcess();
@@ -293,6 +286,7 @@ static unsigned __stdcall gethostbyname_thread (void *arg)
    * due to a resolver timeout.
    */
   struct thread_sync_data tsd = { 0,0,0,NULL };
+
   if (!init_thread_sync_data(td, conn->async.hostname, &tsd)) {
     /* thread synchronization data initialization failed */
     return (unsigned)-1;
@@ -353,6 +347,7 @@ static unsigned __stdcall getaddrinfo_thread (void *arg)
    * due to a resolver timeout.
    */
   struct thread_sync_data tsd = { 0,0,0,NULL };
+
   if (!init_thread_sync_data(td, conn->async.hostname, &tsd)) {
     /* thread synchronization data initialization failed */
     return -1;