diff options
Diffstat (limited to 'elf/dl-tls.c')
| -rw-r--r-- | elf/dl-tls.c | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/elf/dl-tls.c b/elf/dl-tls.c index 9454d06d72..5204fdaac0 100644 --- a/elf/dl-tls.c +++ b/elf/dl-tls.c @@ -105,6 +105,33 @@ _dl_next_tls_modid (void) } +size_t +internal_function +_dl_count_modids (void) +{ + /* It is rare that we have gaps; see elf/dl-open.c (_dl_open) where + we fail to load a module and unload it leaving a gap. If we don't + have gaps then the number of modids is the current maximum so + return that. */ + if (__glibc_likely (!GL(dl_tls_dtv_gaps))) + return GL(dl_tls_max_dtv_idx); + + /* We have gaps and are forced to count the non-NULL entries. */ + size_t n = 0; + struct dtv_slotinfo_list *runp = GL(dl_tls_dtv_slotinfo_list); + while (runp != NULL) + { + for (size_t i = 0; i < runp->len; ++i) + if (runp->slotinfo[i].map != NULL) + ++n; + + runp = runp->next; + } + + return n; +} + + #ifdef SHARED void internal_function @@ -407,6 +434,7 @@ _dl_allocate_tls_init (void *result) /* Keep track of the maximum generation number. This might not be the generation counter. */ + assert (listp->slotinfo[cnt].gen <= GL(dl_tls_generation)); maxgen = MAX (maxgen, listp->slotinfo[cnt].gen); if (map->l_tls_offset == NO_TLS_OFFSET |