From fc72bfb155d6938e6d4b7b0e24a6256d88c2a7c3 Mon Sep 17 00:00:00 2001
From: Brian Aker <brian@tangent.org>
Date: Mon, 21 May 2012 02:01:35 -0400
Subject: [PATCH] Remove a simple issue that trips up peope providing patches
 (just allow the class to cleanup the purge values).

---
 libmemcached/is.h         |  1 -
 libmemcached/memcached.cc |  5 ----
 libmemcached/purge.cc     | 53 +++++++++++++++++++++++++++++++--------
 3 files changed, 43 insertions(+), 16 deletions(-)

diff --git a/libmemcached/is.h b/libmemcached/is.h
index 25ebe03e..4c4d6f31 100644
--- a/libmemcached/is.h
+++ b/libmemcached/is.h
@@ -54,7 +54,6 @@
 
 #define memcached_has_replicas(__object) ((__object)->root->number_of_replicas)
 
-#define memcached_set_purging(__object, __value) ((__object)->state.is_purging= (__value))
 #define memcached_set_processing_input(__object, __value) ((__object)->state.is_processing_input= (__value))
 #define memcached_set_initialized(__object, __value) ((__object)->options.is_initialized(= (__value))
 #define memcached_set_allocated(__object, __value) ((__object)->options.is_allocated= (__value))
diff --git a/libmemcached/memcached.cc b/libmemcached/memcached.cc
index 2bcf6fa8..548f2355 100644
--- a/libmemcached/memcached.cc
+++ b/libmemcached/memcached.cc
@@ -184,11 +184,6 @@ memcached_st *memcached_create(memcached_st *ptr)
     ptr->options.is_allocated= true;
   }
 
-#if 0
-  memcached_set_purging(ptr, false);
-  memcached_set_processing_input(ptr, false);
-#endif
-
   if (_memcached_init(ptr) == false)
   {
     memcached_free(ptr);
diff --git a/libmemcached/purge.cc b/libmemcached/purge.cc
index 38e4552a..841af82e 100644
--- a/libmemcached/purge.cc
+++ b/libmemcached/purge.cc
@@ -39,6 +39,45 @@
 
 #include <libmemcached/common.h>
 
+#define memcached_set_purging(__object, __value) ((__object)->state.is_purging= (__value))
+
+class Purge
+{
+public:
+  Purge(memcached_st* arg) :
+    _memc(arg)
+  {
+    memcached_set_purging(_memc, true);
+  }
+
+  ~Purge()
+  {
+    memcached_set_purging(_memc, false);
+  }
+
+private:
+  memcached_st* _memc;
+};
+
+class PollTimeout
+{
+public:
+  PollTimeout(memcached_st* arg) :
+    _timeout(arg->poll_timeout),
+    _origin(arg->poll_timeout)
+  {
+    _origin = 2000;
+  }
+
+  ~PollTimeout()
+  {
+    _origin= _timeout;
+  }
+
+private:
+  int32_t _timeout;
+  int32_t& _origin;
+};
 
 bool memcached_purge(memcached_server_write_instance_st ptr)
 {
@@ -57,7 +96,7 @@ bool memcached_purge(memcached_server_write_instance_st ptr)
     memcached_io_write and memcached_response may call memcached_purge
     so we need to be able stop any recursion.. 
   */
-  memcached_set_purging(root, true);
+  Purge set_purge(root);
 
   WATCHPOINT_ASSERT(ptr->fd != INVALID_SOCKET);
   /* 
@@ -66,8 +105,6 @@ bool memcached_purge(memcached_server_write_instance_st ptr)
   */
   if (memcached_io_write(ptr) == false)
   {
-    memcached_set_purging(root, true);
-
     memcached_set_error(*ptr, MEMCACHED_WRITE_FAILURE, MEMCACHED_AT);
     return false;
   }
@@ -78,18 +115,16 @@ bool memcached_purge(memcached_server_write_instance_st ptr)
   if (no_msg > 0)
   {
     memcached_result_st result;
-    memcached_result_st *result_ptr;
 
     /*
      * We need to increase the timeout, because we might be waiting for
      * data to be sent from the server (the commands was in the output buffer
      * and just flushed
    */
-    const int32_t timeo= ptr->root->poll_timeout;
-    root->poll_timeout= 2000;
+    PollTimeout poll_timeout(ptr->root);
 
-    result_ptr= memcached_result_create(root, &result);
-    WATCHPOINT_ASSERT(result_ptr);
+    memcached_result_st* result_ptr= memcached_result_create(root, &result);
+    assert(result_ptr);
 
     for (uint32_t x= 0; x < no_msg; x++)
     {
@@ -124,9 +159,7 @@ bool memcached_purge(memcached_server_write_instance_st ptr)
     }
 
     memcached_result_free(result_ptr);
-    root->poll_timeout= timeo;
   }
-  memcached_set_purging(root, false);
 
   return is_successful;
 }
-- 
2.30.2