diff options
Diffstat (limited to 'src/engine/gnump')
| -rw-r--r-- | src/engine/gnump/gmp_mem.cpp | 22 | ||||
| -rw-r--r-- | src/engine/gnump/gnump_engine.h | 7 |
2 files changed, 17 insertions, 12 deletions
diff --git a/src/engine/gnump/gmp_mem.cpp b/src/engine/gnump/gmp_mem.cpp index 59e0cc4c5..f3650e716 100644 --- a/src/engine/gnump/gmp_mem.cpp +++ b/src/engine/gnump/gmp_mem.cpp @@ -1,6 +1,6 @@ /* * GNU MP Memory Handlers -* (C) 1999-2007 Jack Lloyd +* (C) 1999-2010 Jack Lloyd * * Distributed under the terms of the Botan license */ @@ -17,6 +17,7 @@ namespace { * Allocator used by GNU MP */ Allocator* gmp_alloc = 0; +u32bit gmp_alloc_refcnt = 0; /* * Allocation Function for GNU MP @@ -48,23 +49,28 @@ void gmp_free(void* ptr, size_t n) } /* -* Set the GNU MP memory functions +* GMP_Engine Constructor */ -void GMP_Engine::set_memory_hooks() +GMP_Engine::GMP_Engine() { if(gmp_alloc == 0) { gmp_alloc = Allocator::get(true); mp_set_memory_functions(gmp_malloc, gmp_realloc, gmp_free); } + + ++gmp_alloc_refcnt; } -/* -* GMP_Engine Constructor -*/ -GMP_Engine::GMP_Engine() +GMP_Engine::~GMP_Engine() { - set_memory_hooks(); + --gmp_alloc_refcnt; + + if(gmp_alloc_refcnt == 0) + { + mp_set_memory_functions(NULL, NULL, NULL); + gmp_alloc = 0; + } } } diff --git a/src/engine/gnump/gnump_engine.h b/src/engine/gnump/gnump_engine.h index ec4a7e721..d0b070441 100644 --- a/src/engine/gnump/gnump_engine.h +++ b/src/engine/gnump/gnump_engine.h @@ -18,6 +18,9 @@ namespace Botan { class GMP_Engine : public Engine { public: + GMP_Engine(); + ~GMP_Engine(); + std::string provider_name() const { return "gmp"; } #if defined(BOTAN_HAS_IF_PUBLIC_KEY_FAMILY) @@ -46,10 +49,6 @@ class GMP_Engine : public Engine Modular_Exponentiator* mod_exp(const BigInt&, Power_Mod::Usage_Hints) const; - - GMP_Engine(); - private: - static void set_memory_hooks(); }; } |