From: Brian Aker <brian@gir.tangent.org>
Date: Wed, 16 Dec 2009 17:34:28 +0000 (-0800)
Subject: Code change to use struct bitsets.
X-Git-Tag: 0.37~78
X-Git-Url: https://git.m6w6.name/?a=commitdiff_plain;h=1a92818ec19dd3e9ca4b6765a5765ca1a97dcfdc;p=m6w6%2Flibmemcached

Code change to use struct bitsets.
---

diff --git a/libmemcached/memcached.c b/libmemcached/memcached.c
index 4e8ec062..c5aff374 100644
--- a/libmemcached/memcached.c
+++ b/libmemcached/memcached.c
@@ -11,16 +11,20 @@ memcached_st *memcached_create(memcached_st *ptr)
   {
     ptr= (memcached_st *)calloc(1, sizeof(memcached_st));
 
-    if (!ptr)
+    if (! ptr)
+    {
       return NULL; /*  MEMCACHED_MEMORY_ALLOCATION_FAILURE */
+    }
 
-    ptr->is_allocated= true;
+    ptr->options.is_allocated= true;
   }
   else
   {
     memset(ptr, 0, sizeof(memcached_st));
   }
 
+  ptr->options.is_initialized= true;
+
   memcached_set_memory_allocators(ptr, NULL, NULL, NULL, NULL);
 
   result_ptr= memcached_result_create(ptr, &ptr->result);
@@ -34,6 +38,9 @@ memcached_st *memcached_create(memcached_st *ptr)
   ptr->io_msg_watermark= 500;
   ptr->io_bytes_watermark= 65 * 1024;
 
+  WATCHPOINT_ASSERT_INITIALIZED(&ptr->result);
+  WATCHPOINT_ASSERT_INITIALIZED(&ptr->hashkit);
+
   return ptr;
 }
 
@@ -50,10 +57,14 @@ void memcached_free(memcached_st *ptr)
   if (ptr->continuum)
     ptr->call_free(ptr, ptr->continuum);
 
-  if (ptr->is_allocated)
+  if (memcached_is_allocated(ptr))
+  {
     ptr->call_free(ptr, ptr);
+  }
   else
-    memset(ptr, 0, sizeof(memcached_st));
+  {
+    ptr->options.is_initialized= false;
+  }
 }
 
 /*
@@ -69,7 +80,7 @@ memcached_st *memcached_clone(memcached_st *clone, memcached_st *source)
   if (source == NULL)
     return memcached_create(clone);
 
-  if (clone && clone->is_allocated)
+  if (clone && memcached_is_allocated(clone))
   {
     return NULL;
   }
diff --git a/libmemcached/memcached.h b/libmemcached/memcached.h
index 6ca40a5c..512e768e 100644
--- a/libmemcached/memcached.h
+++ b/libmemcached/memcached.h
@@ -73,8 +73,11 @@ struct memcached_stat_st {
 };
 
 struct memcached_st {
-  uint8_t purging;
-  bool is_allocated;
+  struct {
+    bool is_allocated:1;
+    bool is_initialized:1;
+    bool is_purging:1;
+  } options;
   uint8_t distribution;
   uint8_t hash;
   uint32_t continuum_points_counter;
@@ -323,6 +326,10 @@ void *memcached_set_user_data(memcached_st *ptr, void *data);
 
 LIBMEMCACHED_LOCAL
 memcached_return run_distribution(memcached_st *ptr);
+
+#define memcached_is_allocated(__object) ((__object)->options.is_allocated)
+#define memcached_is_initialized(__object) ((__object)->options.is_initialized)
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/libmemcached/memcached_fetch.c b/libmemcached/memcached_fetch.c
index 9c31e2b0..dc253ca2 100644
--- a/libmemcached/memcached_fetch.c
+++ b/libmemcached/memcached_fetch.c
@@ -69,10 +69,14 @@ memcached_result_st *memcached_fetch_result(memcached_st *ptr,
   }
 
   /* We have completed reading data */
-  if (result->is_allocated)
+  if (memcached_is_allocated(result))
+  {
     memcached_result_free(result);
+  }
   else
+  {
     memcached_string_reset(&result->value);
+  }
 
   return NULL;
 }
diff --git a/libmemcached/memcached_purge.c b/libmemcached/memcached_purge.c
index 9e5e31ab..1f47e59e 100644
--- a/libmemcached/memcached_purge.c
+++ b/libmemcached/memcached_purge.c
@@ -7,7 +7,7 @@ memcached_return memcached_purge(memcached_server_st *ptr)
   uint32_t x;
   memcached_return ret= MEMCACHED_SUCCESS;
 
-  if (ptr->root->purging || /* already purging */
+  if (ptr->root->options.is_purging || /* already purging */
       (memcached_server_response_count(ptr) < ptr->root->io_msg_watermark &&
       ptr->io_bytes_sent < ptr->root->io_bytes_watermark) ||
       (ptr->io_bytes_sent >= ptr->root->io_bytes_watermark &&
@@ -18,14 +18,14 @@ memcached_return memcached_purge(memcached_server_st *ptr)
 
   /* memcached_io_write and memcached_response may call memcached_purge
      so we need to be able stop any recursion.. */
-  ptr->root->purging= 1;
+  ptr->root->options.is_purging= true;
 
   WATCHPOINT_ASSERT(ptr->fd != -1);
   /* Force a flush of the buffer to ensure that we don't have the n-1 pending
      requests buffered up.. */
   if (memcached_io_write(ptr, NULL, 0, 1) == -1)
   {
-    ptr->root->purging= 0;
+    ptr->root->options.is_purging= true;
     return MEMCACHED_WRITE_FAILURE;
   }
   WATCHPOINT_ASSERT(ptr->fd != -1);
@@ -70,7 +70,7 @@ memcached_return memcached_purge(memcached_server_st *ptr)
     memcached_result_free(result_ptr);
     ptr->root->poll_timeout= timeo;
   }
-  ptr->root->purging= 0;
+  ptr->root->options.is_purging= false;
 
   return ret;
 }
diff --git a/libmemcached/memcached_result.c b/libmemcached/memcached_result.c
index 0d77130d..6fdad670 100644
--- a/libmemcached/memcached_result.c
+++ b/libmemcached/memcached_result.c
@@ -9,20 +9,27 @@
 memcached_result_st *memcached_result_create(memcached_st *memc, 
                                              memcached_result_st *ptr)
 {
+  WATCHPOINT_ASSERT(memc && memc->options.is_initialized);
+
   /* Saving malloc calls :) */
   if (ptr)
+  {
     memset(ptr, 0, sizeof(memcached_result_st));
+  }
   else
   {
     ptr= memc->call_malloc(memc, sizeof(memcached_result_st));
 
     if (ptr == NULL)
       return NULL;
-    ptr->is_allocated= true;
+    ptr->options.is_allocated= true;
   }
 
+  ptr->options.is_initialized= true;
+
   ptr->root= memc;
   memcached_string_create(memc, &ptr->value, 0);
+  WATCHPOINT_ASSERT_INITIALIZED(&ptr->value);
   WATCHPOINT_ASSERT(ptr->value.string == NULL);
 
   return ptr;
@@ -52,6 +59,12 @@ void memcached_result_free(memcached_result_st *ptr)
 
   memcached_string_free(&ptr->value);
 
-  if (ptr->is_allocated)
+  if (memcached_is_allocated(ptr))
+  {
     free(ptr);
+  }
+  else
+  {
+    ptr->options.is_initialized= false;
+  }
 }
diff --git a/libmemcached/memcached_result.h b/libmemcached/memcached_result.h
index e7ce012b..88212824 100644
--- a/libmemcached/memcached_result.h
+++ b/libmemcached/memcached_result.h
@@ -14,8 +14,11 @@ extern "C" {
 #endif
 
 struct memcached_result_st {
+  struct {
+    bool is_allocated:1;
+    bool is_initialized:1;
+  } options;
   uint32_t flags;
-  bool is_allocated;
   time_t expiration;
   memcached_st *root;
   size_t key_length;
diff --git a/libmemcached/memcached_server.c b/libmemcached/memcached_server.c
index 2ecbe214..ca0f4d04 100644
--- a/libmemcached/memcached_server.c
+++ b/libmemcached/memcached_server.c
@@ -12,10 +12,12 @@ memcached_server_st *memcached_server_create(memcached_st *memc, memcached_serve
     if (!ptr)
       return NULL; /*  MEMCACHED_MEMORY_ALLOCATION_FAILURE */
 
-    ptr->is_allocated= true;
+    ptr->options.is_allocated= true;
   }
   else
+  {
     memset(ptr, 0, sizeof(memcached_server_st));
+  }
 
   ptr->root= memc;
 
@@ -59,10 +61,15 @@ void memcached_server_free(memcached_server_st *ptr)
   if (ptr->address_info)
     freeaddrinfo(ptr->address_info);
 
-  if (ptr->is_allocated)
+
+  if (memcached_is_allocated(ptr))
+  {
     ptr->root->call_free(ptr->root, ptr);
+  }
   else
+  {
     memset(ptr, 0, sizeof(memcached_server_st));
+  }
 }
 
 /*
diff --git a/libmemcached/memcached_server.h b/libmemcached/memcached_server.h
index de57eaec..389f241d 100644
--- a/libmemcached/memcached_server.h
+++ b/libmemcached/memcached_server.h
@@ -14,7 +14,9 @@ extern "C" {
 #endif
 
 struct memcached_server_st {
-  bool is_allocated;
+  struct {
+    bool is_allocated:1;
+  } options;
   bool sockaddr_inited;
   uint16_t count;
   unsigned int cursor_active;
diff --git a/libmemcached/memcached_stats.c b/libmemcached/memcached_stats.c
index 04928f04..f1defc5b 100644
--- a/libmemcached/memcached_stats.c
+++ b/libmemcached/memcached_stats.c
@@ -33,7 +33,7 @@ static const char *memcached_stat_keys[] = {
 static memcached_return set_data(memcached_stat_st *memc_stat, char *key, char *value)
 {
 
-  if(strlen(key) < 1) 
+  if (strlen(key) < 1) 
   {
     WATCHPOINT_STRING(key);
     return MEMCACHED_UNKNOWN_STAT_KEY;
@@ -398,8 +398,10 @@ memcached_return memcached_stat_servername(memcached_stat_st *memc_stat, char *a
 {
   memcached_return rc;
   memcached_st memc;
+  memcached_st *memc_ptr;
 
-  memcached_create(&memc);
+  memc_ptr= memcached_create(&memc);
+  WATCHPOINT_ASSERT(memc_ptr);
 
   memcached_server_add(&memc, hostname, port);
 
diff --git a/libmemcached/memcached_string.c b/libmemcached/memcached_string.c
index 614343c8..0911b409 100644
--- a/libmemcached/memcached_string.c
+++ b/libmemcached/memcached_string.c
@@ -1,6 +1,6 @@
 #include "common.h"
 
-memcached_return memcached_string_check(memcached_string_st *string, size_t need)
+inline static memcached_return _string_check(memcached_string_st *string, size_t need)
 {
   if (need && need > (size_t)(string->current_size - (size_t)(string->end - string->string)))
   {
@@ -32,31 +32,40 @@ memcached_return memcached_string_check(memcached_string_st *string, size_t need
   return MEMCACHED_SUCCESS;
 }
 
-memcached_string_st *memcached_string_create(memcached_st *ptr, memcached_string_st *string, size_t initial_size)
+memcached_string_st *memcached_string_create(memcached_st *memc, memcached_string_st *string, size_t initial_size)
 {
   memcached_return rc;
 
   /* Saving malloc calls :) */
   if (string)
+  {
+    WATCHPOINT_ASSERT(memc->options.is_safe && string->options.is_initialized == false);
+
     memset(string, 0, sizeof(memcached_string_st));
+  }
   else
   {
-    string= ptr->call_calloc(ptr, 1, sizeof(memcached_string_st));
+    string= memc->call_calloc(memc, 1, sizeof(memcached_string_st));
 
     if (string == NULL)
+    {
       return NULL;
-    string->is_allocated= true;
+    }
+
+    string->options.is_allocated= true;
   }
   string->block_size= MEMCACHED_BLOCK_SIZE;
-  string->root= ptr;
+  string->root= memc;
 
-  rc=  memcached_string_check(string, initial_size);
+  rc=  _string_check(string, initial_size);
   if (rc != MEMCACHED_SUCCESS)
   {
-    ptr->call_free(ptr, string);
+    memc->call_free(memc, string);
     return NULL;
   }
 
+  string->options.is_initialized= true;
+
   WATCHPOINT_ASSERT(string->string == string->end);
 
   return string;
@@ -67,7 +76,7 @@ memcached_return memcached_string_append_character(memcached_string_st *string,
 {
   memcached_return rc;
 
-  rc=  memcached_string_check(string, 1);
+  rc=  _string_check(string, 1);
 
   if (rc != MEMCACHED_SUCCESS)
     return rc;
@@ -83,7 +92,7 @@ memcached_return memcached_string_append(memcached_string_st *string,
 {
   memcached_return rc;
 
-  rc= memcached_string_check(string, length);
+  rc= _string_check(string, length);
 
   if (rc != MEMCACHED_SUCCESS)
     return rc;
@@ -129,10 +138,23 @@ void memcached_string_free(memcached_string_st *ptr)
     return;
 
   if (ptr->string)
+  {
     ptr->root->call_free(ptr->root, ptr->string);
+  }
 
-  if (ptr->is_allocated)
+  if (memcached_is_allocated(ptr))
+  {
     ptr->root->call_free(ptr->root, ptr);
+  }
   else
+  {
+    ptr->options.is_initialized= false;
     memset(ptr, 0, sizeof(memcached_string_st));
+  }
+}
+
+memcached_return memcached_string_check(memcached_string_st *string, size_t need)
+{
+  return _string_check(string, need);
 }
+
diff --git a/libmemcached/memcached_string.h b/libmemcached/memcached_string.h
index bed14281..6ecdbe94 100644
--- a/libmemcached/memcached_string.h
+++ b/libmemcached/memcached_string.h
@@ -19,7 +19,10 @@ struct memcached_string_st {
   char *string;
   size_t current_size;
   size_t block_size;
-  bool is_allocated;
+  struct {
+    bool is_allocated:1;
+    bool is_initialized:1;
+  } options;
 };
 
 #define memcached_string_length(A) (size_t)((A)->end - (A)->string)
@@ -33,8 +36,10 @@ memcached_string_st *memcached_string_create(memcached_st *ptr,
                                              size_t initial_size);
 LIBMEMCACHED_API
 memcached_return memcached_string_check(memcached_string_st *string, size_t need);
+
 LIBMEMCACHED_API
 char *memcached_string_c_copy(memcached_string_st *string);
+
 LIBMEMCACHED_API
 memcached_return memcached_string_append_character(memcached_string_st *string,
                                                    char character);
@@ -43,6 +48,7 @@ memcached_return memcached_string_append(memcached_string_st *string,
                                          const char *value, size_t length);
 LIBMEMCACHED_API
 memcached_return memcached_string_reset(memcached_string_st *string);
+
 LIBMEMCACHED_API
 void memcached_string_free(memcached_string_st *string);
 
diff --git a/libmemcached/memcached_watchpoint.h b/libmemcached/memcached_watchpoint.h
index dc8045aa..d7f759fd 100644
--- a/libmemcached/memcached_watchpoint.h
+++ b/libmemcached/memcached_watchpoint.h
@@ -23,7 +23,10 @@
 #define WATCHPOINT_ERRNO(A) fprintf(stderr, "\nWATCHPOINT %s:%d (%s) %s\n", __FILE__, __LINE__,__func__, strerror(A));fflush(stdout);
 #define WATCHPOINT_ASSERT_PRINT(A,B,C) if(!(A)){fprintf(stderr, "\nWATCHPOINT ASSERT %s:%d (%s) ", __FILE__, __LINE__,__func__);fprintf(stderr, (B),(C));fprintf(stderr,"\n");fflush(stdout);}assert((A));
 #define WATCHPOINT_ASSERT(A) assert((A));
+#define WATCHPOINT_ASSERT_INITIALIZED(A) (memcached_is_initialized((A));
+
 #else
+
 #define WATCHPOINT
 #define WATCHPOINT_ERROR(A)
 #define WATCHPOINT_IFERROR(A)
@@ -32,6 +35,7 @@
 #define WATCHPOINT_ERRNO(A)
 #define WATCHPOINT_ASSERT_PRINT(A,B,C)
 #define WATCHPOINT_ASSERT(A)
+#define WATCHPOINT_ASSERT_INITIALIZED(A)
 
 #endif /* DEBUG */
 
diff --git a/tests/function.c b/tests/function.c
index c95d3348..70a75557 100644
--- a/tests/function.c
+++ b/tests/function.c
@@ -2933,20 +2933,28 @@ static test_return_t  result_static(memcached_st *memc)
   memcached_result_st *result_ptr;
 
   result_ptr= memcached_result_create(memc, &result);
-  test_truth(result.is_allocated == false);
+  test_truth(result.options.is_allocated == false);
+  test_truth(memcached_is_initialized(&result) == true);
   test_truth(result_ptr);
+  test_truth(result_ptr == &result);
+
   memcached_result_free(&result);
 
+  test_truth(result.options.is_allocated == false);
+  test_truth(memcached_is_initialized(&result) == false);
+
   return TEST_SUCCESS;
 }
 
 static test_return_t  result_alloc(memcached_st *memc)
 {
-  memcached_result_st *result;
+  memcached_result_st *result_ptr;
 
-  result= memcached_result_create(memc, NULL);
-  test_truth(result);
-  memcached_result_free(result);
+  result_ptr= memcached_result_create(memc, NULL);
+  test_truth(result_ptr);
+  test_truth(result_ptr->options.is_allocated == true);
+  test_truth(memcached_is_initialized(result_ptr) == true);
+  memcached_result_free(result_ptr);
 
   return TEST_SUCCESS;
 }
@@ -2957,9 +2965,18 @@ static test_return_t  string_static_null(memcached_st *memc)
   memcached_string_st *string_ptr;
 
   string_ptr= memcached_string_create(memc, &string, 0);
-  test_truth(string.is_allocated == false);
+  test_truth(string.options.is_initialized == true);
   test_truth(string_ptr);
+
+  /* The following two better be the same! */
+  test_truth(memcached_is_allocated(string_ptr) == false);
+  test_truth(memcached_is_allocated(&string) == false);
+  test_truth(&string == string_ptr);
+
+  test_truth(string.options.is_initialized == true);
+  test_truth(memcached_is_initialized(&string) == true);
   memcached_string_free(&string);
+  test_truth(memcached_is_initialized(&string) == false);
 
   return TEST_SUCCESS;
 }
@@ -2970,6 +2987,8 @@ static test_return_t  string_alloc_null(memcached_st *memc)
 
   string= memcached_string_create(memc, NULL, 0);
   test_truth(string);
+  test_truth(memcached_is_allocated(string) == true);
+  test_truth(memcached_is_initialized(string) == true);
   memcached_string_free(string);
 
   return TEST_SUCCESS;
@@ -2981,6 +3000,8 @@ static test_return_t  string_alloc_with_size(memcached_st *memc)
 
   string= memcached_string_create(memc, NULL, 1024);
   test_truth(string);
+  test_truth(memcached_is_allocated(string) == true);
+  test_truth(memcached_is_initialized(string) == true);
   memcached_string_free(string);
 
   return TEST_SUCCESS;
@@ -3007,6 +3028,8 @@ static test_return_t  string_alloc_append(memcached_st *memc)
 
   string= memcached_string_create(memc, NULL, 100);
   test_truth(string);
+  test_truth(memcached_is_allocated(string) == true);
+  test_truth(memcached_is_initialized(string) == true);
 
   for (x= 0; x < 1024; x++)
   {
@@ -3014,6 +3037,7 @@ static test_return_t  string_alloc_append(memcached_st *memc)
     rc= memcached_string_append(string, buffer, SMALL_STRING_LEN);
     test_truth(rc == MEMCACHED_SUCCESS);
   }
+  test_truth(memcached_is_allocated(string) == true);
   memcached_string_free(string);
 
   return TEST_SUCCESS;
@@ -3031,6 +3055,8 @@ static test_return_t  string_alloc_append_toobig(memcached_st *memc)
 
   string= memcached_string_create(memc, NULL, 100);
   test_truth(string);
+  test_truth(memcached_is_allocated(string) == true);
+  test_truth(memcached_is_initialized(string) == true);
 
   for (x= 0; x < 1024; x++)
   {
@@ -3039,6 +3065,7 @@ static test_return_t  string_alloc_append_toobig(memcached_st *memc)
   }
   rc= memcached_string_append(string, buffer, SIZE_MAX);
   test_truth(rc == MEMCACHED_MEMORY_ALLOCATION_FAILURE);
+  test_truth(memcached_is_allocated(string) == true);
   memcached_string_free(string);
 
   return TEST_SUCCESS;