/******************************************************************************
 *
 *  Copyright (C) 2014 Google, Inc.
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at:
 *
 *  http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 *
 ******************************************************************************/

#ifndef _ALLOCATOR_H_
#define _ALLOCATOR_H_

#include <stddef.h>
#include <stdlib.h>
#include "esp_heap_caps.h"
#include "sdkconfig.h"

typedef void *(*alloc_fn)(size_t size);
typedef void (*free_fn)(void *ptr);

typedef struct {
    alloc_fn alloc;
    free_fn  free;
} allocator_t;

// allocator_t abstractions for the osi_*alloc and osi_free functions
extern const allocator_t allocator_malloc;
extern const allocator_t allocator_calloc;

char *osi_strdup(const char *str);

void *osi_malloc_func(size_t size);
void *osi_calloc_func(size_t size);
void osi_free_func(void *ptr);

#ifdef CONFIG_BLUEDROID_MEM_DEBUG

void osi_mem_dbg_init(void);
void osi_mem_dbg_record(void *p, int size, const char *func, int line);
void osi_mem_dbg_clean(void *p, const char *func, int line);
void osi_mem_dbg_show(void);

#if CONFIG_BT_ALLOCATION_FROM_SPIRAM_FIRST
#define osi_malloc(size)                                \
({                                                      \
    void *p;                                            \
    p = heap_caps_malloc_prefer(size, 2,                \
        MALLOC_CAP_DEFAULT|MALLOC_CAP_SPIRAM,           \
        MALLOC_CAP_DEFAULT|MALLOC_CAP_INTERNAL);        \
    osi_mem_dbg_record(p, size, __func__, __LINE__);    \
    (void *)p;                                          \
})

#define osi_calloc(size)                                \
({                                                      \
    void *p;                                            \
    p = heap_caps_calloc_prefer(1, size, 2,             \
        MALLOC_CAP_DEFAULT|MALLOC_CAP_SPIRAM,           \
        MALLOC_CAP_DEFAULT|MALLOC_CAP_INTERNAL);        \
    osi_mem_dbg_record(p, size, __func__, __LINE__);    \
    (void *)p;                                          \
})

#else

#define osi_malloc(size)                                \
({                                                      \
    void *p;                                            \
    p = malloc((size));                                 \
    osi_mem_dbg_record(p, size, __func__, __LINE__);    \
    (void *)p;                                          \
})

#define osi_calloc(size)                               \
({                                                    \
    void *p;                                           \
    p = calloc(1, (size));                              \
    osi_mem_dbg_record(p, size, __func__, __LINE__);    \
    (void *)p;                                          \
})

#endif /* #if CONFIG_BT_ALLOCATION_FROM_SPIRAM_FIRST */


#if 0
#define osi_malloc(size)                                \
do {                                                    \
    void *p;                                            \
                                                        \
#if CONFIG_BT_ALLOCATION_FROM_SPIRAM_FIRST              \
    p = heap_caps_malloc_prefer(size, 2, MALLOC_CAP_DEFAULT|MALLOC_CAP_SPIRAM, MALLOC_CAP_DEFAULT|MALLOC_CAP_INTERNAL); \
#else                                                   \
    p = malloc((size));                                 \
#endif /* #if CONFIG_BT_ALLOCATION_FROM_SPIRAM_FIRST */ \
    osi_mem_dbg_record(p, size, __func__, __LINE__);    \
    (void *)p;                                          \
}while(0)

#define osi_calloc(size)                                \
do {                                                    \
    void *p;                                            \
                                                        \
#if CONFIG_BT_ALLOCATION_FROM_SPIRAM_FIRST              \
        p = heap_caps_calloc_prefer(1, size, 2,         \
            MALLOC_CAP_DEFAULT|MALLOC_CAP_SPIRAM,       \
            MALLOC_CAP_DEFAULT|MALLOC_CAP_INTERNAL);    \
#else                                                   \
    p = calloc(1, (size));                              \
#endif /* #if CONFIG_BT_ALLOCATION_FROM_SPIRAM_FIRST */ \
    osi_mem_dbg_record(p, size, __func__, __LINE__);    \
    (void *)p;                                          \
} while(0)
#endif

#define osi_free(ptr)                                   \
do {                                                    \
    void *tmp_point = (void *)(ptr);                    \
    osi_mem_dbg_clean(tmp_point, __func__, __LINE__);   \
    free(tmp_point);                                    \
} while (0)

#else

#if CONFIG_BT_ALLOCATION_FROM_SPIRAM_FIRST
#define osi_malloc(size)                  heap_caps_malloc_prefer(size, 2, MALLOC_CAP_DEFAULT|MALLOC_CAP_SPIRAM, MALLOC_CAP_DEFAULT|MALLOC_CAP_INTERNAL)
#define osi_calloc(size)                  heap_caps_calloc_prefer(1, size, 2, MALLOC_CAP_DEFAULT|MALLOC_CAP_SPIRAM, MALLOC_CAP_DEFAULT|MALLOC_CAP_INTERNAL)
#else
#define osi_malloc(size)                  malloc((size))
#define osi_calloc(size)                  calloc(1, (size))
#endif /* #if CONFIG_BT_ALLOCATION_FROM_SPIRAM_FIRST */
#define osi_free(p)                       free((p))

#endif /* CONFIG_BLUEDROID_MEM_DEBUG */

#define FREE_AND_RESET(a)   \
do {                        \
    if (a) {                \
        osi_free(a);        \
        a = NULL;           \
    }                       \
}while (0)


#endif /* _ALLOCATOR_H_ */