xref: /optee_os/lib/libutils/isoc/include/malloc.h (revision c46bd3e1f20d9c743a685714ad4f169c6e52d0d1)

/* SPDX-License-Identifier: BSD-2-Clause */
/*
 * Copyright (c) 2014, STMicroelectronics International N.V.
 */
#ifndef MALLOC_H
#define MALLOC_H

#include <stddef.h>
#include <types_ext.h>

/*
 * Due to bget implementation, the first memory pool registered shall have
 * a min size. Choose 1kB which is reasonable.
 */
#define MALLOC_INITIAL_POOL_MIN_SIZE	1024

void free(void *ptr);

#ifdef ENABLE_MDBG

void *mdbg_malloc(const char *fname, int lineno, size_t size);
void *mdbg_calloc(const char *fname, int lineno, size_t nmemb, size_t size);
void *mdbg_realloc(const char *fname, int lineno, void *ptr, size_t size);
void *mdbg_memalign(const char *fname, int lineno, size_t alignment,
		    size_t size);

void mdbg_check(int bufdump);

#define malloc(size)	mdbg_malloc(__FILE__, __LINE__, (size))
#define calloc(nmemb, size) \
		mdbg_calloc(__FILE__, __LINE__, (nmemb), (size))
#define realloc(ptr, size) \
		mdbg_realloc(__FILE__, __LINE__, (ptr), (size))
#define memalign(alignment, size) \
		mdbg_memalign(__FILE__, __LINE__, (alignment), (size))

#else

void *malloc(size_t size);
void *calloc(size_t nmemb, size_t size);
void *realloc(void *ptr, size_t size);
void *memalign(size_t alignment, size_t size);

#define mdbg_check(x)        do { } while (0)

#endif


/*
 * Returns true if the supplied memory area is within a buffer
 * previously allocated (and not freed yet).
 *
 * Used internally by TAs
 */
bool malloc_buffer_is_within_alloced(void *buf, size_t len);

/*
 * Returns true if the supplied memory area is overlapping the area used
 * for heap.
 *
 * Used internally by TAs
 */
bool malloc_buffer_overlaps_heap(void *buf, size_t len);

/*
 * Adds a pool of memory to allocate from.
 */
void malloc_add_pool(void *buf, size_t len);

#ifdef CFG_WITH_STATS
/*
 * Get/reset allocation statistics
 */

#define TEE_ALLOCATOR_DESC_LENGTH 32
struct malloc_stats {
	char desc[TEE_ALLOCATOR_DESC_LENGTH];
	uint32_t allocated;               /* Bytes currently allocated */
	uint32_t max_allocated;           /* Tracks max value of allocated */
	uint32_t size;                    /* Total size for this allocator */
	uint32_t num_alloc_fail;          /* Number of failed alloc requests */
	uint32_t biggest_alloc_fail;      /* Size of biggest failed alloc */
	uint32_t biggest_alloc_fail_used; /* Alloc bytes when above occurred */
};

void malloc_get_stats(struct malloc_stats *stats);
void malloc_reset_stats(void);
#endif /* CFG_WITH_STATS */


#ifdef CFG_VIRTUALIZATION

void nex_free(void *ptr);

#ifdef ENABLE_MDBG

void *nex_mdbg_malloc(const char *fname, int lineno, size_t size);
void *nex_mdbg_calloc(const char *fname, int lineno, size_t nmemb, size_t size);
void *nex_mdbg_realloc(const char *fname, int lineno, void *ptr, size_t size);
void *nex_mdbg_memalign(const char *fname, int lineno, size_t alignment,
			size_t size);

void nex_mdbg_check(int bufdump);

#define nex_malloc(size)	nex_mdbg_malloc(__FILE__, __LINE__, (size))
#define nex_calloc(nmemb, size) \
		nex_mdbg_calloc(__FILE__, __LINE__, (nmemb), (size))
#define nex_realloc(ptr, size) \
		nex_mdbg_realloc(__FILE__, __LINE__, (ptr), (size))
#define nex_memalign(alignment, size) \
		nex_mdbg_memalign(__FILE__, __LINE__, (alignment), (size))

#else /* ENABLE_MDBG */

void *nex_malloc(size_t size);
void *nex_calloc(size_t nmemb, size_t size);
void *nex_realloc(void *ptr, size_t size);
void *nex_memalign(size_t alignment, size_t size);

#define nex_mdbg_check(x)        do { } while (0)

#endif /* ENABLE_MDBG */

bool nex_malloc_buffer_is_within_alloced(void *buf, size_t len);
bool nex_malloc_buffer_overlaps_heap(void *buf, size_t len);
void nex_malloc_add_pool(void *buf, size_t len);

#ifdef CFG_WITH_STATS
/*
 * Get/reset allocation statistics
 */

void nex_malloc_get_stats(struct malloc_stats *stats);
void nex_malloc_reset_stats(void);

#endif	/* CFG_WITH_STATS */
#else  /* CFG_VIRTUALIZATION */

#define nex_free(ptr) free(ptr)
#define nex_malloc(size) malloc(size)
#define nex_calloc(nmemb, size) calloc(nmemb, size)
#define nex_realloc(ptr, size) realloc(ptr, size)
#define nex_memalign(alignment, size) memalign(alignment, size)

#endif	/* CFG_VIRTUALIZATION */

#endif /* MALLOC_H */