From cb85aa8a8d02a3d6dc16e3f32e78da9e70f9c7f5 Mon Sep 17 00:00:00 2001
From: wangzhengquan <wangzhengquan85@126.com>
Date: 星期二, 02 二月 2021 17:49:21 +0800
Subject: [PATCH] update

---
 src/shm/hashtable.cpp |  369 +++++++++++++++++++---------------------------------
 1 files changed, 137 insertions(+), 232 deletions(-)

diff --git a/src/shm/hashtable.cpp b/src/shm/hashtable.cpp
index e421630..7a5faf4 100755
--- a/src/shm/hashtable.cpp
+++ b/src/shm/hashtable.cpp
@@ -1,7 +1,7 @@
 #include "usg_common.h"
 #include "hashtable.h"
 #include "mm.h"
-#include "sem_util.h"
+#include "svsem.h"
 #include "logger_factory.h"
 #include <set>
 #include <functional>
@@ -24,23 +24,27 @@
 
 static size_t hashcode(int key);
 
-static struct timespec TIMEOUT = {2, 0};
-
 void hashtable_init(hashtable_t *hashtable )
 {
 
   memset(hashtable, 0, sizeof(hashtable_t));
-  hashtable->mutex = SemUtil::get(IPC_PRIVATE, 1);
-  hashtable->wlock = SemUtil::get(IPC_PRIVATE, 1);
-  hashtable->cond = SemUtil::get(IPC_PRIVATE, 1);
-  hashtable->readcnt = 0;
-printf("hashtable->mutex=%d\n", hashtable->mutex);
+  hashtable->mutex = svsem_get(IPC_PRIVATE, 1);
+  // hashtable->wlock = svsem_get(IPC_PRIVATE, 1);
+  // hashtable->cond = svsem_get(IPC_PRIVATE, 1);
+  // hashtable->readcnt = 0;
+
+  // FILE * semfile = fopen("./sem.txt", "w+");
+  // if(semfile == NULL) {
+  //   err_exit(errno, "fopen");
+  // }
+  // fprintf(semfile, "hashtable->mutex=%d\n", hashtable->mutex);
+  // fclose(semfile);
 }
 
 void hashtable_destroy(hashtable_t *hashtable) {
-  SemUtil::remove( hashtable->mutex);
-  SemUtil::remove( hashtable->wlock);
-  SemUtil::remove( hashtable->cond);
+  svsem_remove( hashtable->mutex);
+  // svsem_remove( hashtable->wlock);
+  // svsem_remove( hashtable->cond);
 }
 
 
@@ -105,17 +109,17 @@
   void *oldvalue;
   int rv;
 
-  if( (rv = SemUtil::dec(hashtable->wlock)) != 0) {
-    LoggerFactory::getLogger()->error(rv, "hashtable_remove\n");
+  if( (rv = svsem_wait(hashtable->mutex)) != 0) {
+    LoggerFactory::getLogger()->error(errno, "hashtable_remove\n");
   }
   tailq_header_t *my_tailq_head = hashtable->array[code] ;
   if ( my_tailq_head == NULL)
   {
-    SemUtil::inc(hashtable->wlock);
+    if((rv = svsem_post(hashtable->mutex)) != 0) {
+      LoggerFactory::getLogger()->error(errno, "hashtable_remove\n");
+    }
     return NULL;
-  }
-  else
-  {
+  } else {
     for (item = TAILQ_FIRST(my_tailq_head); item != NULL; item = TAILQ_NEXT(item, joint))
     {
       if (key == item->key)
@@ -126,183 +130,81 @@
 
         /* mm_free the item as we don't need it anymore. */
         mm_free(item);
-        SemUtil::inc(hashtable->wlock);
+        svsem_post(hashtable->mutex);
         return oldvalue;
       }
     }
-  }
-  if((rv = SemUtil::inc(hashtable->wlock)) != 0) {
-    LoggerFactory::getLogger()->error(rv, "hashtable_remove\n");
-  }
 
-  return NULL;
-
-}
-
-
-
-
-
-void hashtable_removeall(hashtable_t *hashtable)
-{
-  tailq_entry_t *item;
-  int rv;
-  rv = SemUtil::dec(hashtable->wlock);
-  if(rv != 0) {
-    LoggerFactory::getLogger()->error(rv, "hashtable_removeall\n");
-  }
-  for (int i = 0; i < MAPSIZE; i++)
-  {
-    tailq_header_t *my_tailq_head = hashtable->array[i] ;
-
-    if (my_tailq_head == NULL )
-      continue;
-
-    while ((item = TAILQ_FIRST(my_tailq_head)) )
-    {
-      TAILQ_REMOVE(my_tailq_head, item, joint);
-      mm_free(item);
+    if((rv = svsem_post(hashtable->mutex)) != 0) {
+      LoggerFactory::getLogger()->error(errno, "hashtable_remove\n");
     }
-    mm_free(my_tailq_head);
-    hashtable->array[i] = NULL;
+
+    return NULL;
   }
-  rv = SemUtil::inc(hashtable->wlock);
-  if(rv != 0) {
-    LoggerFactory::getLogger()->error(rv, "hashtable_removeall\n");
-  }
-}
-
-/**
- * for debug
- */
-void hashtable_printall(hashtable_t *hashtable)
-{
-  tailq_entry_t *item;
-  for (int i = 0; i < MAPSIZE; i++)
-  {
-    tailq_header_t *my_tailq_head = hashtable->array[i] ;
-
-    if (my_tailq_head == NULL )
-      continue;
-
-    printf("code=%d\n", i);
-    TAILQ_FOREACH(item, my_tailq_head, joint)
-    {
-      printf("%d:%s\n", item->key, (char *)item->value);
-    }
-    printf("\n");
-  }
-}
-
-static size_t hashcode(int key)
-{
-
-  return key % MAPSIZE;
-  /*printf("hashfun = %ld\n", code);*/
 }
 
 void *hashtable_get(hashtable_t *hashtable, int key) {
-
-  int rv;
-  rv = SemUtil::dec(hashtable->mutex);
-  if(rv != 0) {
-    LoggerFactory::getLogger()->error(rv, "hashtable_get 1");
-  }
-  hashtable->readcnt++;
-  if (hashtable->readcnt == 1) {
-    //鑾峰彇璇诲啓閿�
-    rv = SemUtil::dec(hashtable->wlock);
-    if(rv != 0) {
-      LoggerFactory::getLogger()->error(rv, "hashtable_get 2");
-    }
-  }
-  rv = SemUtil::inc(hashtable->mutex);
-  if(rv != 0) {
-    LoggerFactory::getLogger()->error(rv, "hashtable_get 3");
-  }
-  // ================
-
   void * res = _hashtable_get(hashtable, key);
-
-  // ==================
-
-  rv = SemUtil::dec(hashtable->mutex);
-  if(rv != 0) {
-    LoggerFactory::getLogger()->error(rv, "hashtable_get 4");
-  }
-  hashtable->readcnt--;
-  if(hashtable->readcnt == 0) {
-    //閲婃斁璇诲啓閿�
-    rv = SemUtil::inc(hashtable->wlock);
-    if(rv != 0) {
-      LoggerFactory::getLogger()->error(rv, "hashtable_get 5");
-    }
-    //閫氱煡鍐�
-    rv = SemUtil::set(hashtable->cond, 1);
-    if(rv != 0) {
-      LoggerFactory::getLogger()->error(rv, "hashtable_get 6");
-    }
-  }
-
-  rv = SemUtil::inc(hashtable->mutex);
-  if(rv != 0) {
-    LoggerFactory::getLogger()->error(rv, "hashtable_get 7");
-  }
   return res;
 }
 
 void hashtable_put(hashtable_t *hashtable, int key, void *value) {
+  _hashtable_put(hashtable, key, value); 
+}
+
+bool hashtable_check_put(hashtable_t *hashtable, int key, void *value, bool overwrite) {
 
   int rv;
-
-  rv = SemUtil::dec(hashtable->mutex);
-  if(rv != 0) {
-    LoggerFactory::getLogger()->error(rv, "hashtable_put\n");
+  void * val;
+  if(( rv = svsem_wait(hashtable->mutex)) != 0) {
+    LoggerFactory::getLogger()->error(errno, "hashtable_put\n");
   }
-  // 璁剧疆璇讳紭鍏堢骇楂�
-  while (hashtable->readcnt > 0)
-  {
-    rv = SemUtil::set(hashtable->cond, 0);
-    if(rv != 0) {
-      LoggerFactory::getLogger()->error(rv, "hashtable_put\n");
-    }
-    rv = SemUtil::inc(hashtable->mutex);
-    if(rv != 0) {
-      LoggerFactory::getLogger()->error(rv, "hashtable_put\n");
-    }
-    //绛夊緟鍐欓�氱煡
-    rv = SemUtil::dec(hashtable->cond);
-    if(rv != 0) {
-      LoggerFactory::getLogger()->error(rv, "hashtable_put\n");
-    }
-
-
-    rv = SemUtil::dec(hashtable->mutex);
-    if(rv != 0) {
-      LoggerFactory::getLogger()->error(rv, "hashtable_put\n");
-    }
+  if(overwrite) {
+    _hashtable_put(hashtable, key, value);
+    goto suc;
   }
-  rv = SemUtil::inc(hashtable->mutex);
-  if(rv != 0) {
-    LoggerFactory::getLogger()->error(rv, "hashtable_put\n");
-  }
-
-  //鑾峰彇璇诲啓閿�
-  rv = SemUtil::dec(hashtable->wlock);
-  if(rv != 0) {
-    LoggerFactory::getLogger()->error(rv, "hashtable_put\n");
-  }
+  val = _hashtable_get(hashtable, key);
+  // val = 1鏄痑llockey鐨勬儏鍐�
+  if(val != NULL && val != (void *)1) 
+    goto fail;
 
   _hashtable_put(hashtable, key, value);
 
-  //閲婃斁璇诲啓閿�
-  rv = SemUtil::inc(hashtable->wlock);
-  if(rv != 0) {
-    LoggerFactory::getLogger()->error(rv, "hashtable_put\n");
+suc:
+  if(( rv = svsem_post(hashtable->mutex)) != 0) {
+    LoggerFactory::getLogger()->error(errno, "hashtable_put\n");
   }
+  return true;
+
+fail:
+  if(( rv = svsem_post(hashtable->mutex)) != 0) {
+    LoggerFactory::getLogger()->error(errno, "hashtable_put\n");
+  }
+  return false;
 }
 
 
+
+int hashtable_alloc_key(hashtable_t *hashtable) {
+  int rv;
+  int key = START_KEY;
+  rv = svsem_wait(hashtable->mutex);
+  if(rv != 0) {
+    LoggerFactory::getLogger()->error(errno, "hashtable_alloc_key\n");
+  }
+
+  while(_hashtable_get(hashtable, key) != NULL) {
+    key++;
+  }
+  // 鍗犵敤key
+  _hashtable_put(hashtable, key, (void *)1);
+
+  rv = svsem_post(hashtable->mutex);
+  if(rv != 0) {
+    LoggerFactory::getLogger()->error(errno, "hashtable_alloc_key\n");
+  }
+  return key;
+}
 
 static inline void _hashtable_foreach(hashtable_t *hashtable, std::function<void(int, void *)>  cb) {
   tailq_entry_t *item;
@@ -321,51 +223,7 @@
 
 
 void hashtable_foreach(hashtable_t *hashtable,  std::function<void(int, void *)>  cb) {
-  int rv;
-  rv = SemUtil::dec(hashtable->mutex);
-  if(rv != 0) {
-    LoggerFactory::getLogger()->error(rv, "hashtable_foreach\n");
-  }
-  hashtable->readcnt++;
-  if (hashtable->readcnt == 1) {
-    //鑾峰彇璇诲啓閿�
-    rv = SemUtil::dec(hashtable->wlock);
-    if(rv != 0) {
-      LoggerFactory::getLogger()->error(rv, "hashtable_foreach\n");
-    }
-  }
-  rv = SemUtil::inc(hashtable->mutex);
-  if(rv != 0) {
-    LoggerFactory::getLogger()->error(rv, "hashtable_foreach\n");
-  }
-
-  // ==================
-
-  _hashtable_foreach(hashtable, cb);
-
-  // ==================
-
-  rv = SemUtil::dec(hashtable->mutex);
-  if(rv != 0) {
-    LoggerFactory::getLogger()->error(rv, "hashtable_foreach\n");
-  }
-  hashtable->readcnt--;
-  if(hashtable->readcnt == 0) {
-    //閲婃斁璇诲啓閿�
-    rv = SemUtil::inc(hashtable->wlock);
-    if(rv != 0) {
-      LoggerFactory::getLogger()->error(rv, "hashtable_foreach\n");
-    }
-    //閫氱煡鍐�
-    rv = SemUtil::set(hashtable->cond, 1);
-    if(rv != 0) {
-      LoggerFactory::getLogger()->error(rv, "hashtable_foreach\n");
-    }
-  }
-  rv = SemUtil::inc(hashtable->mutex);
-  if(rv != 0) {
-    LoggerFactory::getLogger()->error(rv, "hashtable_foreach\n");
-  }
+ return _hashtable_foreach(hashtable, cb);
 
 }
 
@@ -388,23 +246,70 @@
 }
 
 
-int hashtable_alloc_key(hashtable_t *hashtable) {
-  int rv;
-  int key = START_KEY;
-  rv = SemUtil::dec(hashtable->wlock);
-  if(rv != 0) {
-    LoggerFactory::getLogger()->error(rv, "hashtable_alloc_key\n");
-  }
 
-  while(_hashtable_get(hashtable, key) != NULL) {
-    key++;
-  }
-  // 鍗犵敤key
-  _hashtable_put(hashtable, key, (void *)1);
-
-  rv = SemUtil::inc(hashtable->wlock);
-  if(rv != 0) {
-    LoggerFactory::getLogger()->error(rv, "hashtable_alloc_key\n");
-  }
-  return key;
+int hashtable_lock(hashtable_t *hashtable) {
+  return svsem_wait(hashtable->mutex);
 }
+
+int hashtable_unlock(hashtable_t *hashtable) {
+  return svsem_post(hashtable->mutex);
+}
+
+
+void hashtable_removeall(hashtable_t *hashtable)
+{
+  tailq_entry_t *item;
+  int rv;
+  if( (rv = svsem_wait(hashtable->mutex)) != 0) {
+    LoggerFactory::getLogger()->error(errno, "hashtable_removeall\n");
+  }
+  for (int i = 0; i < MAPSIZE; i++)
+  {
+    tailq_header_t *my_tailq_head = hashtable->array[i] ;
+
+    if (my_tailq_head == NULL )
+      continue;
+
+    while ((item = TAILQ_FIRST(my_tailq_head)) )
+    {
+      TAILQ_REMOVE(my_tailq_head, item, joint);
+      mm_free(item);
+    }
+    mm_free(my_tailq_head);
+    hashtable->array[i] = NULL;
+  }
+
+  if((rv = svsem_post(hashtable->mutex)) != 0) {
+    LoggerFactory::getLogger()->error(errno, "hashtable_removeall\n");
+  }
+}
+
+
+static size_t hashcode(int key)
+{
+
+  return key % MAPSIZE;
+  /*printf("hashfun = %ld\n", code);*/
+}
+
+/**
+ * for debug
+ */
+static void hashtable_printall(hashtable_t *hashtable)
+{
+  tailq_entry_t *item;
+  for (int i = 0; i < MAPSIZE; i++)
+  {
+    tailq_header_t *my_tailq_head = hashtable->array[i] ;
+
+    if (my_tailq_head == NULL )
+      continue;
+
+    printf("code=%d\n", i);
+    TAILQ_FOREACH(item, my_tailq_head, joint)
+    {
+      printf("%d:%s\n", item->key, (char *)item->value);
+    }
+    printf("\n");
+  }
+}
\ No newline at end of file

--
Gitblit v1.8.0