83ef499562
the use case for these functions is secure code like SRTP and TLS. memcmp() should not be used when comparing secret data such as shared keys, because the content may affect the timing. instead the compare function should always take the same to execute, independently of the content.
45 lines
1.4 KiB
C
45 lines
1.4 KiB
C
/**
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* @file re_mem.h Interface to Memory management with reference counting
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*
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* Copyright (C) 2010 Creytiv.com
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*/
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/**
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* Defines the memory destructor handler, which is called when the reference
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* of a memory object goes down to zero
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*
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* @param data Pointer to memory object
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*/
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typedef void (mem_destroy_h)(void *data);
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/** Memory Statistics */
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struct memstat {
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size_t bytes_cur; /**< Current bytes allocated */
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size_t bytes_peak; /**< Peak bytes allocated */
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size_t blocks_cur; /**< Current blocks allocated */
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size_t blocks_peak; /**< Peak blocks allocated */
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size_t size_min; /**< Lowest block size allocated */
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size_t size_max; /**< Largest block size allocated */
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};
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void *mem_alloc(size_t size, mem_destroy_h *dh);
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void *mem_zalloc(size_t size, mem_destroy_h *dh);
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void *mem_realloc(void *data, size_t size);
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void *mem_reallocarray(void *ptr, size_t nmemb,
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size_t membsize, mem_destroy_h *dh);
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void *mem_ref(void *data);
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void *mem_deref(void *data);
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uint32_t mem_nrefs(const void *data);
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void mem_debug(void);
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void mem_threshold_set(ssize_t n);
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struct re_printf;
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int mem_status(struct re_printf *pf, void *unused);
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int mem_get_stat(struct memstat *mstat);
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/* Secure memory functions */
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int mem_seccmp(const volatile uint8_t *volatile s1,
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const volatile uint8_t *volatile s2,
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size_t n);
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