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#ifndef AWS_IO_MESSAGE_POOL_H
#define AWS_IO_MESSAGE_POOL_H
/**
* Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
* SPDX-License-Identifier: Apache-2.0.
*/
#include <aws/common/array_list.h>
#include <aws/io/io.h>
AWS_PUSH_SANE_WARNING_LEVEL
struct aws_memory_pool {
struct aws_allocator *alloc;
struct aws_array_list stack;
uint16_t ideal_segment_count;
size_t segment_size;
void *data_ptr;
};
struct aws_message_pool {
struct aws_allocator *alloc;
struct aws_memory_pool application_data_pool;
struct aws_memory_pool small_block_pool;
};
struct aws_message_pool_creation_args {
size_t application_data_msg_data_size;
uint8_t application_data_msg_count;
size_t small_block_msg_data_size;
uint8_t small_block_msg_count;
};
AWS_EXTERN_C_BEGIN
AWS_IO_API
int aws_memory_pool_init(
struct aws_memory_pool *mempool,
struct aws_allocator *alloc,
uint16_t ideal_segment_count,
size_t segment_size);
AWS_IO_API
void aws_memory_pool_clean_up(struct aws_memory_pool *mempool);
/**
* Acquires memory from the pool if available, otherwise, it attempts to allocate and returns the result.
*/
AWS_IO_API
void *aws_memory_pool_acquire(struct aws_memory_pool *mempool);
/**
* Releases memory to the pool if space is available, otherwise frees `to_release`
*/
AWS_IO_API
void aws_memory_pool_release(struct aws_memory_pool *mempool, void *to_release);
/**
* Initializes message pool using 'msg_pool' as the backing pool, 'args' is copied.
*/
AWS_IO_API
int aws_message_pool_init(
struct aws_message_pool *msg_pool,
struct aws_allocator *alloc,
struct aws_message_pool_creation_args *args);
AWS_IO_API
void aws_message_pool_clean_up(struct aws_message_pool *msg_pool);
/**
* Acquires a message from the pool if available, otherwise, it attempts to allocate. If a message is acquired,
* note that size_hint is just a hint. the return value's capacity will be set to the actual buffer size.
*/
AWS_IO_API
struct aws_io_message *aws_message_pool_acquire(
struct aws_message_pool *msg_pool,
enum aws_io_message_type message_type,
size_t size_hint);
/**
* Releases message to the pool if space is available, otherwise frees `message`
* @param message
*/
AWS_IO_API
void aws_message_pool_release(struct aws_message_pool *msg_pool, struct aws_io_message *message);
AWS_EXTERN_C_END
AWS_POP_SANE_WARNING_LEVEL
#endif /* AWS_IO_MESSAGE_POOL_H */
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