1 /* mpfr_free_cache... - Free cache/pool memory used by MPFR. 2 3 Copyright 2004-2020 Free Software Foundation, Inc. 4 Contributed by the AriC and Caramba projects, INRIA. 5 6 This file is part of the GNU MPFR Library. 7 8 The GNU MPFR Library is free software; you can redistribute it and/or modify 9 it under the terms of the GNU Lesser General Public License as published by 10 the Free Software Foundation; either version 3 of the License, or (at your 11 option) any later version. 12 13 The GNU MPFR Library is distributed in the hope that it will be useful, but 14 WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 15 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public 16 License for more details. 17 18 You should have received a copy of the GNU Lesser General Public License 19 along with the GNU MPFR Library; see the file COPYING.LESSER. If not, see 20 https://www.gnu.org/licenses/ or write to the Free Software Foundation, Inc., 21 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. */ 22 23 #include "mpfr-impl.h" 24 25 /* These caches may be global to all threads or local to the current one. */ 26 static void 27 mpfr_free_const_caches (void) 28 { 29 #ifndef MPFR_USE_LOGGING 30 mpfr_clear_cache (__gmpfr_cache_const_pi); 31 mpfr_clear_cache (__gmpfr_cache_const_log2); 32 #else 33 mpfr_clear_cache (__gmpfr_normal_pi); 34 mpfr_clear_cache (__gmpfr_normal_log2); 35 mpfr_clear_cache (__gmpfr_logging_pi); 36 mpfr_clear_cache (__gmpfr_logging_log2); 37 #endif 38 mpfr_clear_cache (__gmpfr_cache_const_euler); 39 mpfr_clear_cache (__gmpfr_cache_const_catalan); 40 } 41 42 /* These caches/pools are always local to a thread. */ 43 static void 44 mpfr_free_local_cache (void) 45 { 46 /* Before freeing the mpz_t pool, we need to free any cache of 47 mpz_t numbers, since freeing such a cache may add entries to 48 the mpz_t pool. */ 49 mpfr_bernoulli_freecache (); 50 mpfr_free_pool (); 51 } 52 53 void 54 mpfr_free_cache (void) 55 { 56 mpfr_free_local_cache (); 57 mpfr_free_const_caches (); 58 } 59 60 void 61 mpfr_free_cache2 (mpfr_free_cache_t way) 62 { 63 if ((unsigned int) way & MPFR_FREE_LOCAL_CACHE) 64 { 65 mpfr_free_local_cache (); 66 #if !defined(MPFR_WANT_SHARED_CACHE) 67 mpfr_free_const_caches (); 68 #endif 69 } 70 if ((unsigned int) way & MPFR_FREE_GLOBAL_CACHE) 71 { 72 #if defined(MPFR_WANT_SHARED_CACHE) 73 mpfr_free_const_caches (); 74 #endif 75 } 76 } 77 78 /* Function an application should call before mp_set_memory_functions(). 79 This is currently equivalent to freeing the caches (and pools) since 80 they are allocated with GMP's current allocator. But this might change 81 in the future to avoid the drawback of having to free the caches just 82 because the allocators are changed: the caches could optionally be 83 allocated with malloc(). 84 This function returns 0 in case of success, non-zero in case of error. 85 Errors are currently not possible. But let's avoid a prototype change 86 in the future, in case errors would be possible. */ 87 int 88 mpfr_mp_memory_cleanup (void) 89 { 90 mpfr_free_cache (); 91 return 0; 92 } 93