2 /* Copyright (C) 1995-1997 Eric Young (eay@cryptsoft.com)
5 * This package is an SSL implementation written
6 * by Eric Young (eay@cryptsoft.com).
7 * The implementation was written so as to conform with Netscapes SSL.
9 * This library is free for commercial and non-commercial use as long as
10 * the following conditions are aheared to. The following conditions
11 * apply to all code found in this distribution, be it the RC4, RSA,
12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
13 * included with this distribution is covered by the same copyright terms
14 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
16 * Copyright remains Eric Young's, and as such any Copyright notices in
17 * the code are not to be removed.
18 * If this package is used in a product, Eric Young should be given attribution
19 * as the author of the parts of the library used.
20 * This can be in the form of a textual message at program startup or
21 * in documentation (online or textual) provided with the package.
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
26 * 1. Redistributions of source code must retain the copyright
27 * notice, this list of conditions and the following disclaimer.
28 * 2. Redistributions in binary form must reproduce the above copyright
29 * notice, this list of conditions and the following disclaimer in the
30 * documentation and/or other materials provided with the distribution.
31 * 3. All advertising materials mentioning features or use of this software
32 * must display the following acknowledgement:
33 * "This product includes cryptographic software written by
34 * Eric Young (eay@cryptsoft.com)"
35 * The word 'cryptographic' can be left out if the rouines from the library
36 * being used are not cryptographic related :-).
37 * 4. If you include any Windows specific code (or a derivative thereof) from
38 * the apps directory (application code) you must include an acknowledgement:
39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
53 * The licence and distribution terms for any publically available version or
54 * derivative of this code cannot be changed. i.e. this code cannot simply be
55 * copied and put under another distribution licence
56 * [including the GNU Public Licence.]
66 static int mh_mode=CRYPTO_MEM_CHECK_OFF;
67 static unsigned long order=0;
69 static LHASH *mh=NULL;
80 int CRYPTO_mem_ctrl(mode)
85 CRYPTO_w_lock(CRYPTO_LOCK_MALLOC);
88 case CRYPTO_MEM_CHECK_ON:
89 mh_mode|=CRYPTO_MEM_CHECK_ON;
91 case CRYPTO_MEM_CHECK_OFF:
92 mh_mode&= ~CRYPTO_MEM_CHECK_ON;
97 CRYPTO_w_unlock(CRYPTO_LOCK_MALLOC);
101 static int mem_cmp(a,b)
104 return(a->addr - b->addr);
107 static unsigned long mem_hash(a)
112 ret=(unsigned long)a->addr;
114 ret=ret*17851+(ret>>14)*7+(ret>>4)*251;
118 static char *(*malloc_func)()= (char *(*)())malloc;
119 static char *(*realloc_func)()= (char *(*)())realloc;
120 static void (*free_func)()= (void (*)())free;
122 void CRYPTO_set_mem_functions(m,r,f)
127 if ((m == NULL) || (r == NULL) || (f == NULL)) return;
133 void CRYPTO_get_mem_functions(m,r,f)
138 if (m != NULL) *m=malloc_func;
139 if (r != NULL) *r=realloc_func;
140 if (f != NULL) *f=free_func;
143 char *CRYPTO_malloc(num)
146 return(malloc_func(num));
149 char *CRYPTO_realloc(str,num)
153 return(realloc_func(str,num));
156 void CRYPTO_free(str)
162 char *CRYPTO_dbg_malloc(num,file,line)
170 if ((ret=malloc_func(num)) == NULL)
173 if (mh_mode & CRYPTO_MEM_CHECK_ON)
175 if ((m=(MEM *)malloc(sizeof(MEM))) == NULL)
180 CRYPTO_w_lock(CRYPTO_LOCK_MALLOC);
183 if ((mh=lh_new(mem_hash,mem_cmp)) == NULL)
196 if (lh_insert(mh,(char *)m) != NULL)
203 CRYPTO_w_unlock(CRYPTO_LOCK_MALLOC);
208 void CRYPTO_dbg_free(addr)
213 if ((mh_mode & CRYPTO_MEM_CHECK_ON) && (mh != NULL))
215 CRYPTO_w_lock(CRYPTO_LOCK_MALLOC);
217 mp=(MEM *)lh_delete(mh,(char *)&m);
220 CRYPTO_w_unlock(CRYPTO_LOCK_MALLOC);
225 char *CRYPTO_dbg_realloc(addr,num,file,line)
234 ret=realloc_func(addr,num);
235 if (ret == addr) return(ret);
237 if (mh_mode & CRYPTO_MEM_CHECK_ON)
239 if (ret == NULL) return(NULL);
241 CRYPTO_w_lock(CRYPTO_LOCK_MALLOC);
242 mp=(MEM *)lh_delete(mh,(char *)&m);
246 lh_insert(mh,(char *)mp);
248 CRYPTO_w_unlock(CRYPTO_LOCK_MALLOC);
253 char *CRYPTO_remalloc(a,n)
257 if (a != NULL) Free(a);
262 char *CRYPTO_dbg_remalloc(a,n,file,line)
268 if (a != NULL) CRYPTO_dbg_free(a);
269 a=(char *)CRYPTO_dbg_malloc(n,file,line);
274 typedef struct mem_leak_st
281 static void print_leak(m,l)
287 sprintf(buf,"%5ld file=%s, line=%d, number=%d, address=%08lX\n",
288 m->order,m->file,m->line,m->num,(long)m->addr);
289 BIO_puts(l->bio,buf);
294 void CRYPTO_mem_leaks(b)
300 if (mh == NULL) return;
304 CRYPTO_w_lock(CRYPTO_LOCK_MALLOC);
305 lh_doall_arg(mh,(void (*)())print_leak,(char *)&ml);
306 CRYPTO_w_unlock(CRYPTO_LOCK_MALLOC);
309 sprintf(buf,"%ld bytes leaked in %d chunks\n",
315 lh_node_stats_bio(mh,b);
316 lh_node_usage_stats_bio(mh,b);
320 static void (*mem_cb)()=NULL;
322 static void cb_leak(m,cb)
326 void (*mem_callback)()=(void (*)())cb;
327 mem_callback(m->order,m->file,m->line,m->num,m->addr);
330 void CRYPTO_mem_leaks_cb(cb)
333 if (mh == NULL) return;
334 CRYPTO_w_lock(CRYPTO_LOCK_MALLOC);
336 lh_doall_arg(mh,(void (*)())cb_leak,(char *)mem_cb);
338 CRYPTO_w_unlock(CRYPTO_LOCK_MALLOC);
342 void CRYPTO_mem_leaks_fp(fp)
347 if (mh == NULL) return;
348 if ((b=BIO_new(BIO_s_file())) == NULL)
350 BIO_set_fp(b,fp,BIO_NOCLOSE);