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/*
*
* Copyright 2016, Google Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#ifndef GRPC_CORE_LIB_IOMGR_BUFFER_POOL_H
#define GRPC_CORE_LIB_IOMGR_BUFFER_POOL_H
#include <grpc/grpc.h>
#include "src/core/lib/iomgr/exec_ctx.h"
grpc_buffer_pool *grpc_buffer_pool_internal_ref(grpc_buffer_pool *buffer_pool);
void grpc_buffer_pool_internal_unref(grpc_exec_ctx *exec_ctx,
grpc_buffer_pool *buffer_pool);
grpc_buffer_pool *grpc_buffer_pool_from_channel_args(
grpc_channel_args *channel_args);
typedef enum {
GRPC_BULIST_AWAITING_ALLOCATION,
GRPC_BULIST_NON_EMPTY_FREE_POOL,
GRPC_BULIST_RECLAIMER_BENIGN,
GRPC_BULIST_RECLAIMER_DESTRUCTIVE,
GRPC_BULIST_COUNT
} grpc_bulist;
typedef struct grpc_buffer_user grpc_buffer_user;
typedef struct {
grpc_buffer_user *next;
grpc_buffer_user *prev;
} grpc_buffer_user_link;
struct grpc_buffer_user {
grpc_buffer_pool *buffer_pool;
grpc_closure allocate_closure;
grpc_closure add_to_free_pool_closure;
gpr_mu mu;
int64_t allocated;
int64_t free_pool;
grpc_closure_list on_allocated;
bool allocating;
bool added_to_free_pool;
grpc_closure *reclaimers[2];
grpc_closure post_reclaimer_closure[2];
grpc_closure destroy_closure;
grpc_closure *on_done_destroy;
grpc_buffer_user_link links[GRPC_BULIST_COUNT];
};
void grpc_buffer_user_init(grpc_buffer_user *buffer_user,
grpc_buffer_pool *buffer_pool);
void grpc_buffer_user_destroy(grpc_exec_ctx *exec_ctx,
grpc_buffer_user *buffer_user,
grpc_closure *on_done);
void grpc_buffer_user_alloc(grpc_exec_ctx *exec_ctx,
grpc_buffer_user *buffer_user, size_t size,
grpc_closure *optional_on_done);
void grpc_buffer_user_free(grpc_exec_ctx *exec_ctx,
grpc_buffer_user *buffer_user, size_t size);
void grpc_buffer_user_post_reclaimer(grpc_exec_ctx *exec_ctx,
grpc_buffer_user *buffer_user,
bool destructive, grpc_closure *closure);
void grpc_buffer_user_finish_reclaimation(grpc_exec_ctx *exec_ctx,
grpc_buffer_user *buffer_user);
#endif /* GRPC_CORE_LIB_IOMGR_BUFFER_POOL_H */
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