support increment task alloc

src/fast_task_queue.c

@@ -11,11 +11,16 @@
 
 static struct fast_task_queue g_free_queue;
 
-struct mpool_chain {
+struct mpool_node {
 	struct fast_task_info *blocks;
 	struct fast_task_info *last_block;   //last block
-	struct mpool_chain *next;
+	struct mpool_node *next;
-} *g_mpool = NULL;
+};
+
+struct mpool_chain {
+    struct mpool_node *head;
+    struct mpool_node *tail;
+} g_mpool = {NULL, NULL};
 
 #define ALIGNED_TASK_INFO_SIZE  MEM_ALIGN(sizeof(struct fast_task_info))
 
@@ -37,21 +42,20 @@ int task_queue_init(struct fast_task_queue *pQueue)
 	return 0;
 }
 
-static struct mpool_chain *malloc_mpool(const int block_size, \
+static struct mpool_node *malloc_mpool(const int total_alloc_size)
-		const int total_alloc_size)
 {
 	struct fast_task_info *pTask;
 	char *p;
 	char *pCharEnd;
-	struct mpool_chain *mpool;
+	struct mpool_node *mpool;
 
-	mpool = (struct mpool_chain *)malloc(sizeof(struct mpool_chain));
+	mpool = (struct mpool_node *)malloc(sizeof(struct mpool_node));
 	if (mpool == NULL)
 	{
 		logError("file: "__FILE__", line: %d, " \
 			"malloc %d bytes fail, " \
 			"errno: %d, error info: %s", \
-			__LINE__, (int)sizeof(struct mpool_chain), \
+			__LINE__, (int)sizeof(struct mpool_node), \
 			errno, STRERROR(errno));
 		return NULL;
 	}
@@ -71,7 +75,7 @@ static struct mpool_chain *malloc_mpool(const int block_size, \
 	memset(mpool->blocks, 0, total_alloc_size);
 
 	pCharEnd = ((char *)mpool->blocks) + total_alloc_size;
-	for (p=(char *)mpool->blocks; p<pCharEnd; p += block_size)
+	for (p=(char *)mpool->blocks; p<pCharEnd; p += g_free_queue.block_size)
 	{
 		pTask = (struct fast_task_info *)p;
 		pTask->size = g_free_queue.min_buff_size;
@@ -96,7 +100,7 @@ static struct mpool_chain *malloc_mpool(const int block_size, \
 					errno, STRERROR(errno));
 
 				for (pt=(char *)mpool->blocks; pt < p; \
-					pt += block_size)
+					pt += g_free_queue.block_size)
 				{
 					free(((struct fast_task_info *)pt)->data);
 				}
@@ -108,23 +112,23 @@ static struct mpool_chain *malloc_mpool(const int block_size, \
 		}
 	}
 
-	mpool->last_block = (struct fast_task_info *)(pCharEnd - block_size);
+	mpool->last_block = (struct fast_task_info *)(pCharEnd - g_free_queue.block_size);
-	for (p=(char *)mpool->blocks; p<(char *)mpool->last_block; p += block_size)
+	for (p=(char *)mpool->blocks; p<(char *)mpool->last_block; p += g_free_queue.block_size)
 	{
 		pTask = (struct fast_task_info *)p;
-		pTask->next = (struct fast_task_info *)(p + block_size);
+		pTask->next = (struct fast_task_info *)(p + g_free_queue.block_size);
 	}
 	mpool->last_block->next = NULL;
 
 	return mpool;
 }
 
-int free_queue_init(const int max_connections, const int min_buff_size, \
+int free_queue_init_ex(const int max_connections, const int init_connections,
+        const int alloc_task_once, const int min_buff_size,
         const int max_buff_size, const int arg_size)
 {
 	int64_t total_size;
-	struct mpool_chain *mpool;
+	struct mpool_node *mpool;
-	int block_size;
 	int alloc_size;
 	int result;
 	int loop_count;
@@ -144,8 +148,8 @@ int free_queue_init(const int max_connections, const int min_buff_size, \
 	aligned_min_size = MEM_ALIGN(min_buff_size);
 	aligned_max_size = MEM_ALIGN(max_buff_size);
 	aligned_arg_size = MEM_ALIGN(arg_size);
-	block_size = ALIGNED_TASK_INFO_SIZE + aligned_arg_size;
+	g_free_queue.block_size = ALIGNED_TASK_INFO_SIZE + aligned_arg_size;
-	alloc_size = block_size * max_connections;
+	alloc_size = g_free_queue.block_size * init_connections;
 	if (aligned_max_size > aligned_min_size)
 	{
 		total_size = alloc_size;
@@ -177,13 +181,13 @@ int free_queue_init(const int max_connections, const int min_buff_size, \
 			}
 		}
 
-		if (max_data_size >= (int64_t)(block_size + aligned_min_size) *
+		if (max_data_size >= (int64_t)(g_free_queue.block_size + aligned_min_size) *
-			(int64_t)max_connections)
+			(int64_t)init_connections)
 		{
 			total_size = alloc_size + (int64_t)aligned_min_size *
-					max_connections;
+					init_connections;
 			g_free_queue.malloc_whole_block = true;
-			block_size += aligned_min_size;
+			g_free_queue.block_size += aligned_min_size;
 		}
 		else
 		{
@@ -193,64 +197,72 @@ int free_queue_init(const int max_connections, const int min_buff_size, \
 		}
 	}
 
-	logDebug("file: "__FILE__", line: %d, " \
-		"max_connections: %d, min_buff_size: %d, max_buff_size: %d, " \
-		"block_size: %d, arg_size: %d, max_data_size: %d, " \
-		"total_size: %"PRId64, __LINE__, \
-		max_connections, aligned_min_size, aligned_max_size, \
-		block_size, aligned_arg_size, (int)max_data_size, total_size);
-
 	g_free_queue.max_connections = max_connections;
+	g_free_queue.current_connections = init_connections;
+    if (alloc_task_once <= 0)
+    {
+        g_free_queue.alloc_task_once = 256;
+    }
+    else
+    {
+        g_free_queue.alloc_task_once = alloc_task_once;
+    }
 	g_free_queue.min_buff_size = aligned_min_size;
 	g_free_queue.max_buff_size = aligned_max_size;
 	g_free_queue.arg_size = aligned_arg_size;
 
+	logDebug("file: "__FILE__", line: %d, "
+		"max_connections: %d, init_connections: %d, alloc_task_once: %d, "
+        "min_buff_size: %d, max_buff_size: %d, block_size: %d, "
+        "arg_size: %d, max_data_size: %d, total_size: %"PRId64,
+        __LINE__, max_connections, init_connections,
+        g_free_queue.alloc_task_once, aligned_min_size, aligned_max_size,
+        g_free_queue.block_size, aligned_arg_size, (int)max_data_size, total_size);
+
 	if ((!g_free_queue.malloc_whole_block) || \
 		(total_size <= max_data_size))
 	{
 		loop_count = 1;
-		mpool = malloc_mpool(block_size, total_size);
+		mpool = malloc_mpool(total_size);
 		if (mpool == NULL)
 		{
 			return errno != 0 ? errno : ENOMEM;
 		}
-		g_mpool = mpool;
+		g_mpool.head = mpool;
+		g_mpool.tail = mpool;
 	}
 	else
 	{
-		struct mpool_chain *previous_mpool;
 		int remain_count;
 		int alloc_once;
 		int current_count;
 		int current_alloc_size;
 
-		mpool = NULL;
-		previous_mpool = NULL;
 		loop_count = 0;
-		remain_count = max_connections;
+		remain_count = init_connections;
-		alloc_once = max_data_size / block_size;
+		alloc_once = max_data_size / g_free_queue.block_size;
 		while (remain_count > 0)
 		{
 			current_count = (remain_count > alloc_once) ? \
 					alloc_once : remain_count;
-			current_alloc_size = block_size * current_count;
+			current_alloc_size = g_free_queue.block_size * current_count;
-			mpool = malloc_mpool(block_size, current_alloc_size);
+			mpool = malloc_mpool(current_alloc_size);
 			if (mpool == NULL)
 			{
 				free_queue_destroy();
 				return errno != 0 ? errno : ENOMEM;
 			}
 
-			if (previous_mpool == NULL)
+			if (g_mpool.tail == NULL)
 			{
-				g_mpool = mpool;
+				g_mpool.head = mpool;
 			}
 			else
 			{
-				previous_mpool->next = mpool;
+				g_mpool.tail->next = mpool;
-				previous_mpool->last_block->next = mpool->blocks;
+				g_mpool.tail->last_block->next = mpool->blocks;
 			}
-			previous_mpool = mpool;
+            g_mpool.tail = mpool;
 
 			remain_count -= current_count;
 			loop_count++;
@@ -264,35 +276,28 @@ int free_queue_init(const int max_connections, const int min_buff_size, \
 		"malloc task info as whole: %d, malloc loop count: %d", \
 		__LINE__, g_free_queue.malloc_whole_block, loop_count);
 
-	if (g_mpool != NULL)
+	if (g_mpool.head != NULL)
 	{
-		g_free_queue.head = g_mpool->blocks;
+		g_free_queue.head = g_mpool.head->blocks;
-		g_free_queue.tail = mpool->last_block;
+		g_free_queue.tail = g_mpool.tail->last_block;
-
-		/*
-		struct fast_task_info *pTask;
-		int task_count = 0;
-
-		pTask = g_free_queue.head;
-		while (pTask != NULL)
-		{
-			task_count++;
-			pTask = pTask->next;
-		}
-		logDebug("file: "__FILE__", line: %d, " \
-			"task count: %d", __LINE__, task_count);
-		*/
 	}
 
 	return 0;
 }
 
+int free_queue_init(const int max_connections, const int min_buff_size,
+		const int max_buff_size, const int arg_size)
+{
+    return free_queue_init_ex(max_connections, max_connections,
+        0, min_buff_size, max_buff_size, arg_size);
+}
+
 void free_queue_destroy()
 {
-	struct mpool_chain *mpool;
+	struct mpool_node *mpool;
-	struct mpool_chain *mp;
+	struct mpool_node *mp;
 
-	if (g_mpool == NULL)
+	if (g_mpool.head == NULL)
 	{
 		return;
 	}
@@ -301,13 +306,11 @@ void free_queue_destroy()
 	{
 		char *p;
 		char *pCharEnd;
-		int block_size;
 		struct fast_task_info *pTask;
 
-		block_size = ALIGNED_TASK_INFO_SIZE + g_free_queue.arg_size;
+		pCharEnd = ((char *)g_mpool.head->blocks) + g_free_queue.block_size * \
-		pCharEnd = ((char *)g_mpool->blocks) + block_size * \
+				g_free_queue.current_connections;
-				g_free_queue.max_connections;
+		for (p=(char *)g_mpool.head->blocks; p<pCharEnd; p += g_free_queue.block_size)
-		for (p=(char *)g_mpool->blocks; p<pCharEnd; p += block_size)
 		{
 			pTask = (struct fast_task_info *)p;
 			if (pTask->data != NULL)
@@ -318,7 +321,7 @@ void free_queue_destroy()
 		}
 	}
 
-	mpool = g_mpool;
+	mpool = g_mpool.head;
 	while (mpool != NULL)
 	{
 		mp = mpool;
@@ -327,14 +330,114 @@ void free_queue_destroy()
 		free(mp->blocks);
 		free(mp);
 	}
-	g_mpool = NULL;
+	g_mpool.head = g_mpool.tail = NULL;
 
 	pthread_mutex_destroy(&(g_free_queue.lock));
 }
 
+static int free_queue_realloc()
+{
+	struct mpool_node *mpool;
+	struct fast_task_info *head;
+	struct fast_task_info *tail;
+	int remain_count;
+	int current_count;
+	int current_alloc_size;
+    int total_alloc_count;
+
+    head = tail = NULL;
+	total_alloc_count = 0;
+	remain_count = g_free_queue.max_connections -
+        g_free_queue.current_connections;
+	while (remain_count > 0)
+	{
+		current_count = (remain_count > g_free_queue.alloc_task_once) ?
+				g_free_queue.alloc_task_once : remain_count;
+		current_alloc_size = g_free_queue.block_size * current_count;
+		mpool = malloc_mpool(current_alloc_size);
+		if (mpool == NULL)
+		{
+            break;
+		}
+
+        total_alloc_count += current_count;
+		if (g_mpool.tail == NULL)
+		{
+			g_mpool.head = mpool;
+		}
+		else
+		{
+			g_mpool.tail->next = mpool;
+			g_mpool.tail->last_block->next = mpool->blocks;
+		}
+        g_mpool.tail = mpool;
+
+        if (head == NULL)
+        {
+            head = mpool->blocks;
+        }
+        tail = mpool->last_block;
+
+		remain_count -= current_count;
+	}
+
+    if (g_free_queue.head == NULL)
+    {
+        g_free_queue.head = head;
+    }
+    if (g_free_queue.tail != NULL)
+    {
+        g_free_queue.tail->next = head;
+    }
+    g_free_queue.tail = tail;
+
+	logDebug("file: "__FILE__", line: %d, "
+		"alloc %d elements", __LINE__, total_alloc_count);
+
+    if (total_alloc_count > 0)
+    {
+        g_free_queue.current_connections += total_alloc_count;
+        return 0;
+    }
+    else
+    {
+        return ENOMEM;
+    }
+}
+
 struct fast_task_info *free_queue_pop()
 {
-	return task_queue_pop(&g_free_queue);;
+    struct fast_task_info *pTask;
+	if ((pTask=task_queue_pop(&g_free_queue)) != NULL)
+    {
+        return pTask;
+    }
+
+    if (g_free_queue.current_connections >= g_free_queue.max_connections)
+    {
+        return NULL;
+    }
+
+	pthread_mutex_lock(&g_free_queue.lock);
+    if (g_free_queue.current_connections >= g_free_queue.max_connections)
+    {
+        if (g_free_queue.head == NULL)
+        {
+            pthread_mutex_unlock(&g_free_queue.lock);
+            return NULL;
+        }
+    }
+    else
+    {
+        if (free_queue_realloc() != 0)
+        {
+            pthread_mutex_unlock(&g_free_queue.lock);
+            return NULL;
+        }
+    }
+	pthread_mutex_unlock(&g_free_queue.lock);
+
+    return task_queue_pop(&g_free_queue);
 }
 
 int free_queue_push(struct fast_task_info *pTask)

src/fast_task_queue.h

@@ -66,9 +66,12 @@ struct fast_task_queue
 	struct fast_task_info *tail;
 	pthread_mutex_t lock;
 	int max_connections;
+	int current_connections;
+    int alloc_task_once;
 	int min_buff_size;
 	int max_buff_size;
 	int arg_size;
+	int block_size;
 	bool malloc_whole_block;
 };
 
@@ -78,6 +81,9 @@ extern "C" {
 
 int free_queue_init(const int max_connections, const int min_buff_size, \
 		const int max_buff_size, const int arg_size);
+int free_queue_init_ex(const int max_connections, const int init_connections,
+        const int alloc_task_once, const int min_buff_size,
+        const int max_buff_size, const int arg_size);
 
 void free_queue_destroy();