[sr-dev] git:master: core: mem - use mem_safety for f_malloc when DBG_F_MALLOC defined

Module: sip-router Branch: master Commit: 1124b8cb29b942172c4aab38119f4a3c5f6e45f3 URL: http://git.sip-router.org/cgi-bin/gitweb.cgi/sip-router/?a=commit;h=1124b8c… Author: Daniel-Constantin Mierla &lt;miconda(a)gmail.com&gt; Committer: Daniel-Constantin Mierla &lt;miconda(a)gmail.com&gt; Date: Fri Mar 30 09:29:18 2012 +0200 core: mem - use mem_safety for f_malloc when DBG_F_MALLOC defined - added helper function to join a fragment with the next one when both are free, controlled by define MEM_JOIN_FREE and mem_join parameter --- mem/f_malloc.c | 55 ++++++++++++++++++++++++++++++++++++++++++++++++++++--- 1 files changed, 52 insertions(+), 3 deletions(-) diff --git a/mem/f_malloc.c b/mem/f_malloc.c index 7beb3e2..4888b6e 100644 --- a/mem/f_malloc.c +++ b/mem/f_malloc.c @@ -445,6 +445,49 @@ found: } +#ifdef MEM_JOIN_FREE +/** + * join fragment f with next one (if it is free) + */ +static void fm_join_frag(struct fm_block* qm, struct fm_frag* f) +{ + int hash; + struct fm_frag **pf; + struct fm_frag* n; + + n=FRAG_NEXT(f); + /* check if valid and if in free list */ + if (((char*)n >= (char*)qm->last_frag) || (n->u.nxt_free==NULL)) + return; + + /* detach n from the free list */ + hash=GET_HASH(n->size); + pf=&(qm->free_hash[hash].first); + /* find it */ + for(;(*pf)&&(*pf!=n); pf=&((*pf)->u.nxt_free)); /*FIXME slow */ + if (*pf==0){ + /* not found, bad! */ + LM_WARN("could not find %p in free list (hash=%ld)\n", n, GET_HASH(n->size)); + return; + } + /* detach */ + *pf=n->u.nxt_free; + qm->free_hash[hash].no--; +#ifdef F_MALLOC_HASH_BITMAP + if (qm->free_hash[hash].no==0) + fm_bmp_reset(qm, hash); +#endif /* F_MALLOC_HASH_BITMAP */ + /* join */ + f->size+=n->size+FRAG_OVERHEAD; +#if defined(DBG_F_MALLOC) || defined(MALLOC_STATS) + qm->real_used-=FRAG_OVERHEAD; +#ifdef MALLOC_STATS + sr_event_exec(SREV_PKG_SET_REAL_USED, (void*)qm->real_used); +#endif /* MALLOC_STATS */ +#endif /* DBG_F_MALLOC || MALLOC_STATS*/ +} +#endif /*MEM_JOIN_FREE*/ + /** * \brief Main memory manager free function * @@ -465,9 +508,11 @@ void fm_free(struct fm_block* qm, void* p) #ifdef DBG_F_MALLOC MDBG("fm_free(%p, %p), called from %s: %s(%d)\n", qm, p, file, func, line); if (p>(void*)qm->last_frag || p<(void*)qm->first_frag){ - LOG(L_CRIT, "BUG: fm_free: bad pointer %p (out of memory block!) - " - "aborting\n", p); - abort(); + LOG(L_CRIT, "BUG: fm_free: bad pointer %p (out of memory block!)," + " called from %s: %s(%d) - aborting\n", p, + file, func, line); + if(likely(cfg_get(core, core_cfg, mem_safety)==0)) + abort(); } #endif if (p==0) { @@ -493,6 +538,10 @@ void fm_free(struct fm_block* qm, void* p) f->func=func; f->line=line; #endif +#ifdef MEM_JOIN_FREE + if(unlikely(cfg_get(core, core_cfg, mem_join)!=0)) + fm_join_frag(qm, f); +#endif /*MEM_JOIN_FREE*/ fm_insert_free(qm, f); }