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In the _hashlib module, only initialize the static data for OpenSSL's

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constructors once, to avoid memory leaks when finalizing and re-initializing
the Python interpreter.
This commit is contained in:
Gregory P. Smith 2013-02-01 17:00:14 -08:00
parent c0022b2d8c
commit a8a3468abe
1 changed files with 8 additions and 5 deletions
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7
Modules/_hashopenssl.c
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@ -67,7 +67,7 @@ static PyTypeObject EVPtype;
#define DEFINE_CONSTS_FOR_NEW(Name) \ #define DEFINE_CONSTS_FOR_NEW(Name) \
static PyObject *CONST_ ## Name ## _name_obj; \ static PyObject *CONST_ ## Name ## _name_obj = NULL; \
static EVP_MD_CTX CONST_new_ ## Name ## _ctx; \ static EVP_MD_CTX CONST_new_ ## Name ## _ctx; \
static EVP_MD_CTX *CONST_new_ ## Name ## _ctx_p = NULL; static EVP_MD_CTX *CONST_new_ ## Name ## _ctx_p = NULL;
@ -525,13 +525,16 @@ EVP_new(PyObject *self, PyObject *args, PyObject *kwdict)
" hash object; optionally initialized with a string") \ " hash object; optionally initialized with a string") \
} }
/* used in the init function to setup a constructor */ /* used in the init function to setup a constructor: initialize OpenSSL
constructor constants if they haven't been initialized already. */
#define INIT_CONSTRUCTOR_CONSTANTS(NAME) do { \ #define INIT_CONSTRUCTOR_CONSTANTS(NAME) do { \
if (CONST_ ## NAME ## _name_obj == NULL) { \
CONST_ ## NAME ## _name_obj = PyString_FromString(#NAME); \ CONST_ ## NAME ## _name_obj = PyString_FromString(#NAME); \
if (EVP_get_digestbyname(#NAME)) { \ if (EVP_get_digestbyname(#NAME)) { \
CONST_new_ ## NAME ## _ctx_p = &CONST_new_ ## NAME ## _ctx; \ CONST_new_ ## NAME ## _ctx_p = &CONST_new_ ## NAME ## _ctx; \
EVP_DigestInit(CONST_new_ ## NAME ## _ctx_p, EVP_get_digestbyname(#NAME)); \ EVP_DigestInit(CONST_new_ ## NAME ## _ctx_p, EVP_get_digestbyname(#NAME)); \
} \ } \
} \
} while (0); } while (0);
GEN_CONSTRUCTOR(md5) GEN_CONSTRUCTOR(md5)