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Add experimental wrong heap detection behind LDAP_MEMORY_DEBUG macro.

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This commit is contained in:
Kurt Zeilenga 1999-06-02 21:34:34 +00:00
parent c10742a7b5
commit 09fe2bc905
1 changed files with 53 additions and 1 deletions
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54
libraries/liblber/memory.c
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@ -9,8 +9,20 @@
#include "lber-int.h"
BerMemoryFunctions *ber_int_memory_fns = NULL;
#ifdef LDAP_MEMORY_DEBUG
struct ber_mem_hdr {
union bmu_align_u {
size_t bmu_size_t;
void * bmu_voidp;
double bmu_double;
long bmu_long;
} ber_align;
#define bm_junk ber_align.bmu_size_t
};
#define BER_MEM_JUNK 0xddeeddeeU
#endif
BerMemoryFunctions *ber_int_memory_fns = NULL;
void
ber_memfree( void *p )
@ -26,12 +38,20 @@ ber_memfree( void *p )
}
if( ber_int_memory_fns == NULL ) {
#ifdef LDAP_MEMORY_DEBUG
struct ber_mem_hdr *mh = (struct ber_mem_hdr *)
((char *)p - sizeof(struct ber_mem_hdr));
assert( mh->bm_junk == BER_MEM_JUNK );
free( mh );
#else
free( p );
#endif
return;
}
assert( ber_int_memory_fns->bmf_free );
(*ber_int_memory_fns->bmf_free)( p );
}
@ -65,7 +85,17 @@ ber_memalloc( size_t s )
}
if( ber_int_memory_fns == NULL ) {
#ifdef LDAP_MEMORY_DEBUG
struct ber_mem_hdr *mh = malloc(s + sizeof(struct ber_mem_hdr));
if( mh == NULL ) return NULL;
mh->bm_junk = BER_MEM_JUNK;
return &mh[1];
#else
return malloc( s );
#endif
}
assert( ber_int_memory_fns->bmf_malloc );
@ -88,7 +118,15 @@ ber_memcalloc( size_t n, size_t s )
}
if( ber_int_memory_fns == NULL ) {
#ifdef LDAP_MEMORY_DEBUG
struct ber_mem_hdr *mh = calloc(1,
(n * s) + sizeof(struct ber_mem_hdr) );
mh->bm_junk = BER_MEM_JUNK;
return &mh[1];
#else
return calloc( n, s );
#endif
}
assert( ber_int_memory_fns->bmf_calloc );
@ -114,7 +152,21 @@ ber_memrealloc( void* p, size_t s )
}
if( ber_int_memory_fns == NULL ) {
#ifdef LDAP_MEMORY_DEBUG
struct ber_mem_hdr *mh = (struct ber_mem_hdr *)
((char *)p - sizeof(struct ber_mem_hdr));
assert( mh->bm_junk == BER_MEM_JUNK );
p = realloc( mh, s );
if( p == NULL ) return NULL;
mh = p;
return &mh[1];
#else
return realloc( p, s );
#endif
}
assert( ber_int_memory_fns->bmf_realloc );