diff options
Diffstat (limited to 'gmon/gmon.c')
| -rw-r--r-- | gmon/gmon.c | 29 |
1 files changed, 25 insertions, 4 deletions
diff --git a/gmon/gmon.c b/gmon/gmon.c index bf76358d5b..689bf80141 100644 --- a/gmon/gmon.c +++ b/gmon/gmon.c @@ -46,6 +46,11 @@ #include <libc-internal.h> #include <not-cancel.h> +#if HAVE_TUNABLES +# define TUNABLE_NAMESPACE gmon +# include <elf/dl-tunables.h> +#endif + #ifdef PIC # include <link.h> @@ -124,6 +129,22 @@ __monstartup (u_long lowpc, u_long highpc) int o; char *cp; struct gmonparam *p = &_gmonparam; + long int minarcs, maxarcs; + +#if HAVE_TUNABLES + /* Read minarcs/maxarcs tunables. */ + minarcs = TUNABLE_GET (minarcs, int32_t, NULL); + maxarcs = TUNABLE_GET (maxarcs, int32_t, NULL); + if (maxarcs < minarcs) + { + ERR("monstartup: maxarcs < minarcs, setting maxarcs = minarcs\n"); + maxarcs = minarcs; + } +#else + /* No tunables, we use hardcoded defaults */ + minarcs = MINARCS; + maxarcs = MAXARCS; +#endif /* * round lowpc and highpc to multiples of the density we're using @@ -146,10 +167,10 @@ __monstartup (u_long lowpc, u_long highpc) } p->fromssize = ROUNDUP(p->textsize / HASHFRACTION, sizeof(*p->froms)); p->tolimit = p->textsize * ARCDENSITY / 100; - if (p->tolimit < MINARCS) - p->tolimit = MINARCS; - else if (p->tolimit > MAXARCS) - p->tolimit = MAXARCS; + if (p->tolimit < minarcs) + p->tolimit = minarcs; + else if (p->tolimit > maxarcs) + p->tolimit = maxarcs; p->tossize = p->tolimit * sizeof(struct tostruct); cp = calloc (p->kcountsize + p->fromssize + p->tossize, 1); |