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Memory-allocation abstraction layer and buffer-based allocator added

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This commit is contained in:
Paul Bakker 2013-07-03 13:37:05 +02:00
parent f863485fea
commit 6e339b52e8
18 changed files with 818 additions and 103 deletions
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61
include/polarssl/config.h
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@ -401,6 +401,32 @@
#define POLARSSL_NO_PLATFORM_ENTROPY
*/
/**
* \def POLARSSL_MEMORY_DEBUG
*
* Enable debugging of buffer allocator memory issues. Automatically prints
* (to stderr) all (fatal) messages on memory allocation issues. Enables
* function for 'debug output' of allocated memory.
*
* Requires: POLARSSL_MEMORY_BUFFER_ALLOC_C
* fprintf()
*
* Uncomment this macro to let the buffer allocator print out error messages.
#define POLARSSL_MEMORY_DEBUG
*/
/**
* \def POLARSSL_MEMORY_BACKTRACE
*
* Include backtrace information with each allocated block.
*
* Requires: POLARSSL_MEMORY_BUFFER_ALLOC_C
* GLIBC-compatible backtrace() an backtrace_symbols() support
*
* Uncomment this macro to include backtrace information
#define POLARSSL_MEMORY_BACKTRACE
*/
/**
* \def POLARSSL_PKCS1_V21
*
@ -899,6 +925,32 @@
*/
#define POLARSSL_MD5_C
/**
* \def POLARSSL_MEMORY_C
*
* Enable the memory allocation layer.
* By default PolarSSL uses the system-provided malloc() and free().
* (As long as POLARSSL_MEMORY_STDMALLOC and POLARSSL_MEMORY_STDFREE
* are defined and unmodified)
*
* This allows different allocators (self-implemented or provided)
*
* Enable this layer to allow use of alternative memory allocators.
#define POLARSSL_MEMORY_C
*/
/**
* The buffer allocator implementation that makes use of a (stack) based
* buffer to 'allocate' dynamic memory. (replaces malloc() and free() calls)
*
* Module: library/memory_buffer_alloc.c
*
* Requires: POLARSSL_MEMORY_C
*
* Enable this module to enable the buffer memory allocator.
#define POLARSSL_MEMORY_BUFFER_ALLOC_C
*/
/**
* \def POLARSSL_NET_C
*
@ -1231,6 +1283,11 @@
#define ENTROPY_MAX_SOURCES 20 /**< Maximum number of sources supported */
#define ENTROPY_MAX_GATHER 128 /**< Maximum amount requested from entropy sources */
// Memory options
#define MEMORY_ALIGN_MULTIPLE 4 /**< Align on multiples of this value */
#define POLARSSL_MEMORY_STDMALLOC malloc /**< Default allocator to use, can be undefined */
#define POLARSSL_MEMORY_STDFREE free /**< Default free to use, can be undefined */
// SSL Cache options
//
#define SSL_CACHE_DEFAULT_TIMEOUT 86400 /**< 1 day */
@ -1301,6 +1358,10 @@
#error "POLARSSL_KEY_EXCHANGE_RSA_ENABLED defined, but not all prerequisites"
#endif
#if defined(POLARSSL_MEMORY_BUFFER_ALLOC_C) && !defined(POLARSSL_MEMORY_C)
#error "POLARSSL_MEMORY_BUFFER_ALLOC_C defined, but not all prerequisites"
#endif
#if defined(POLARSSL_PBKDF2_C) && !defined(POLARSSL_MD_C)
#error "POLARSSL_PBKDF2_C defined, but not all prerequisites"
#endif