ALL: Add flint

external/flint-2.4.3/memory_manager.c

@@ -0,0 +1,159 @@
+/*=============================================================================
+
+    This file is part of FLINT.
+
+    FLINT is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    FLINT is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with FLINT; if not, write to the Free Software
+    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
+
+=============================================================================*/
+/******************************************************************************
+
+    Copyright (C) 2011 Fredrik Johansson
+
+******************************************************************************/
+
+#include <stdlib.h>
+#include <stdio.h>
+#include "flint.h"
+
+#if HAVE_GC
+#include "gc.h"
+#endif
+
+#if FLINT_REENTRANT && !HAVE_TLS
+#include <pthread.h>
+
+static pthread_once_t register_initialised = PTHREAD_ONCE_INIT;
+pthread_mutex_t register_lock;
+#endif
+
+static void flint_memory_error()
+{
+    flint_printf("Exception (FLINT memory_manager). Unable to allocate memory.\n");
+    abort();
+}
+
+void * flint_malloc(size_t size)
+{
+   void * ptr;
+
+#if HAVE_GC
+   ptr = GC_malloc(size);
+#else
+   ptr = malloc(size);
+#endif
+
+    if (ptr == NULL)
+        flint_memory_error();
+
+    return ptr;
+}
+
+void * flint_realloc(void * ptr, size_t size)
+{
+    void * ptr2;
+
+#if HAVE_GC
+    ptr2 = GC_realloc(ptr, size);
+#else
+    ptr2 = realloc(ptr, size);
+#endif
+
+    if (ptr2 == NULL)
+        flint_memory_error();
+
+    return ptr2;
+}
+
+void * flint_calloc(size_t num, size_t size)
+{
+   void * ptr;
+
+#if HAVE_GC
+    ptr = GC_malloc(num*size);
+#else
+    ptr = calloc(num, size);
+#endif
+
+    if (ptr == NULL)
+        flint_memory_error();
+
+    return ptr;
+}
+
+void flint_free(void * ptr)
+{
+#if !HAVE_GC
+    free(ptr);
+#endif
+}
+
+
+FLINT_TLS_PREFIX size_t flint_num_cleanup_functions = 0;
+
+FLINT_TLS_PREFIX flint_cleanup_function_t * flint_cleanup_functions = NULL;
+
+#if FLINT_REENTRANT && !HAVE_TLS
+void register_init()
+{
+   pthread_mutex_init(&register_lock, NULL);
+}
+#endif
+
+void flint_register_cleanup_function(flint_cleanup_function_t cleanup_function)
+{
+#if FLINT_REENTRANT && !HAVE_TLS
+    pthread_once(&register_initialised, register_init);
+    pthread_mutex_lock(&register_lock);
+#endif
+
+    flint_cleanup_functions = flint_realloc(flint_cleanup_functions,
+        (flint_num_cleanup_functions + 1) * sizeof(flint_cleanup_function_t));
+
+    flint_cleanup_functions[flint_num_cleanup_functions] = cleanup_function;
+
+    flint_num_cleanup_functions++;
+
+#if FLINT_REENTRANT && !HAVE_TLS
+    pthread_mutex_unlock(&register_lock);
+#endif
+}
+
+void _fmpz_cleanup();
+
+void flint_cleanup()
+{
+    size_t i;
+
+#if FLINT_REENTRANT && !HAVE_TLS
+    pthread_mutex_lock(&register_lock);
+#endif
+
+    for (i = 0; i < flint_num_cleanup_functions; i++)
+        flint_cleanup_functions[i]();
+
+    flint_free(flint_cleanup_functions);
+    flint_cleanup_functions = NULL;
+    flint_num_cleanup_functions = 0;
+
+    mpfr_free_cache();
+    _fmpz_cleanup();
+
+#if FLINT_REENTRANT && !HAVE_TLS
+    pthread_mutex_unlock(&register_lock);
+#endif
+
+}
+
+