meet AALLOC_STATS
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tg
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6b9cdbbfd6
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82
aalloc.c
82
aalloc.c
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@ -1,9 +1,31 @@
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#include "sh.h"
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__RCSID("$MirOS: src/bin/mksh/aalloc.c,v 1.28 2008/11/15 07:59:46 tg Exp $");
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__RCSID("$MirOS: src/bin/mksh/aalloc.c,v 1.29 2008/11/15 08:52:00 tg Exp $");
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/* mksh integration of aalloc */
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#if defined(AALLOC_STATS) && !defined(AALLOC_WARN)
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#define AALLOC_WARN aalloc_warn
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static void aalloc_warn(const char *, ...)
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__attribute__((format (printf, 1, 2)));
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static void
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aalloc_warn(const char *fmt, ...)
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{
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va_list va;
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FILE *of;
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va_start(va, fmt);
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if ((of = fopen("/tmp/aalloc.out", "ab+"))) {
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fprintf(of, "%08X %5d: ", (unsigned int)time(NULL),
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(int)getpid());
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vfprintf(of, fmt, va);
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putc('\n', of);
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fclose(of);
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} else
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internal_verrorf(fmt, va);
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}
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#endif
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#ifndef AALLOC_ABORT
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#define AALLOC_ABORT internal_errorf
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#endif
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@ -17,7 +39,9 @@ __RCSID("$MirOS: src/bin/mksh/aalloc.c,v 1.28 2008/11/15 07:59:46 tg Exp $");
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#define AALLOC_THREAD_LEAVE(ap) /* nothing */
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#endif
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#ifndef AALLOC_LEAK_SILENT
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#define AALLOC_LEAK_SILENT /* the code does not yet clean up at exit */
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#endif
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#ifndef AALLOC_RANDOM
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#if HAVE_ARC4RANDOM
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@ -27,12 +51,25 @@ __RCSID("$MirOS: src/bin/mksh/aalloc.c,v 1.28 2008/11/15 07:59:46 tg Exp $");
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#endif
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#endif
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#ifdef DEBUG
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#define AALLOC_DEBUG
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#undef AALLOC_SMALL
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#ifdef MKSH_SMALL
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#define AALLOC_SMALL /* skip sanity checks */
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#endif
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#if defined(DEBUG) && !defined(AALLOC_DEBUG)
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#define AALLOC_DEBUG /* add extra sanity checks */
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#endif
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/* generic area-based allocator built for mmap malloc or omalloc */
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#if defined(AALLOC_SMALL)
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#undef AALLOC_DEBUG
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#undef AALLOC_STATS
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#undef AALLOC_TRACE
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#elif defined(AALLOC_STATS) && !defined(AALLOC_TRACE)
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#define AALLOC_TRACE
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#endif
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#define PVALIGN (sizeof (void *))
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#define PVMASK (sizeof (void *) - 1)
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@ -72,6 +109,12 @@ struct TArea {
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#ifdef AALLOC_TRACK
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TPtr prev;
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TCookie ocookie;
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#ifdef AALLOC_STATS
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const char *name;
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unsigned long numalloc;
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unsigned long maxalloc;
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bool isfree;
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#endif
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#endif
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};
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@ -143,7 +186,11 @@ static PBlock check_bp(PArea, const char *, TCookie);
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static TPtr *check_ptr(void *, PArea, PBlock *, const char *, const char *);
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PArea
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#ifdef AALLOC_STATS
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anewEx(size_t hint, const char *friendly_name)
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#else
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anew(size_t hint)
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#endif
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{
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PArea ap;
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PBlock bp;
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@ -218,6 +265,12 @@ anew(size_t hint)
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ap->prev.pv = (char *)track;
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ap->prev.iv ^= gcookie;
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ap->ocookie = bp->cookie ^ gcookie;
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#ifdef AALLOC_STATS
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ap->name = friendly_name ? friendly_name : "(no name)";
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ap->numalloc = 0;
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ap->maxalloc = 0;
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ap->isfree = false;
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#endif
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track = ap;
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#endif
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AALLOC_DENY(bp);
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@ -235,7 +288,11 @@ check_bp(PArea ap, const char *funcname, TCookie ocookie)
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TPtr p;
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PBlock bp;
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if (ap->bp.pv == NULL) {
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if (ap->bp.pv == NULL
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#ifdef AALLOC_STATS
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|| ap->isfree
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#endif
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) {
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AALLOC_WARN("%s: area %p already freed", funcname, ap);
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return (NULL);
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}
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@ -285,6 +342,13 @@ track_check(void)
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AALLOC_THREAD_ENTER(NULL)
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while (track) {
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tp = track;
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#ifdef AALLOC_STATS
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AALLOC_WARN("AALLOC_STATS for %s(%p): %lu allocated, %lu at "
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"once, %sfree", tp->name, tp, tp->numalloc, tp->maxalloc,
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tp->isfree ? "" : "not ");
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if (tp->isfree)
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goto track_next;
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#endif
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tp->ocookie ^= gcookie;
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lp.iv = tp->prev.iv ^ gcookie;
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if ((lp.iv & PVMASK)
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@ -433,6 +497,16 @@ alloc(size_t nmemb, size_t size, PArea ap)
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ptr->pv = bp->last; /* backpointer to fwdptr storage */
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ptr->iv ^= bp->cookie; /* apply block cookie */
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bp->last += PVALIGN; /* advance next-avail pointer */
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#ifdef AALLOC_STATS
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ap->numalloc++;
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{
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unsigned long curalloc;
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curalloc = (bp->last - (char *)&bp->storage) / PVALIGN;
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if (curalloc > ap->maxalloc)
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ap->maxalloc = curalloc;
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}
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#endif
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AALLOC_DENY(bp);
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AALLOC_THREAD_LEAVE(ap)
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5
sh.h
5
sh.h
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@ -103,7 +103,7 @@
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#define __SCCSID(x) __IDSTRING(sccsid,x)
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#ifdef EXTERN
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__RCSID("$MirOS: src/bin/mksh/sh.h,v 1.260 2008/11/15 08:42:36 tg Exp $");
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__RCSID("$MirOS: src/bin/mksh/sh.h,v 1.261 2008/11/15 08:52:01 tg Exp $");
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#endif
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#define MKSH_VERSION "R36 2008/11/11"
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@ -1248,7 +1248,8 @@ EXTERN struct timeval j_usrtime, j_systime;
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/* alloc.c */
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#ifdef AALLOC_STATS
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#define anew(hint) anewEx((hint), __FILE__ ":" __LINE__ ":" #hint)
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#define AALLOC_STRINGIFY(x) __STRING(x)
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#define anew(hint) anewEx((hint), __FILE__ ":" AALLOC_STRINGIFY(__LINE__))
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PArea anewEx(size_t, const char *); /* cannot fail */
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#else
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PArea anew(size_t); /* cannot fail */
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