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authorUlrich Drepper <drepper@redhat.com>2001-02-26 17:53:15 +0000
committerUlrich Drepper <drepper@redhat.com>2001-02-26 17:53:15 +0000
commitc08bc50a60a92e8d32f302ea411312bc438f05ef (patch)
tree3d385b90c8a5fc7879d4a840f60edc1eb148308a /stdlib/cxa_atexit.c
parentd9e77f3d6ebeee8ba1ee31d46d592530f7c37ba7 (diff)
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Update.
2001-02-26 Ulrich Drepper <drepper@redhat.com> * dlfcn/Makefile (distribute): Add modatexit.c and modcxaatexit.c. (tests): Add tstatexit and tstcxaatexit. (module-names): Add modatexit and modcxaatexit. Add rules to build and run tstatexit and tstcxaatexit. * dlfcn/modatexit.c: New file. * dlfcn/modcxaatexit.c: New file. * dlfcn/tstatexit.c: New file. * dlfcn/tstcxaatexit.c: New file. * io/Makefile: Pass -DHAVE_DOT_HIDDEN to stat and mknod functions if .hidden is available. * io/stat.c: If .hidden is available use it to avoid exporting functions. * io/fstat.c: Likewise. * io/lstat.c: Likewise. * io/stat64.c: Likewise. * io/fstat64.c: Likewise. * io/lstat64.c: Likewise. * sysdeps/generic/mknod.c: Likewise. * malloc/mtrace.c: Use __cxa_atexit and not atexit. * sysdeps/generic/bb_init_func.c: Likewise. * sysdeps/generic/libc-start.c: Likewise. * stdlib/atexit.c (__new_exitfn): Move to cxa_atexit.c. (atexit): Implement using __cxa_atexit. Use .hidden if availble to avoid exporting atexit. * stdlib/cxa_atexit.c (__new_exitfn): Moved to here from atexit.c. * stdlib/Versions: Export __new_exitfn for GLIBC_2.2.3. * stdlib/Makefile (routines): Add old_atexit. (static-only-routines): Add atexit. Pass -DHAVE_DOT_HIDDEN for atexit.c if .hidden is available. * stdlib/old_atexit.c: New file. * intl/Makefile: Remove bogus endif.
Diffstat (limited to 'stdlib/cxa_atexit.c')
-rw-r--r--stdlib/cxa_atexit.c55
1 files changed, 55 insertions, 0 deletions
diff --git a/stdlib/cxa_atexit.c b/stdlib/cxa_atexit.c
index e07d0ed..f602b7a 100644
--- a/stdlib/cxa_atexit.c
+++ b/stdlib/cxa_atexit.c
@@ -16,6 +16,7 @@
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
+#include <bits/libc-lock.h>
#include <stdlib.h>
#include "exit.h"
@@ -36,3 +37,57 @@ __cxa_atexit (void (*func) (void *), void *arg, void *d)
new->func.cxa.dso_handle = d;
return 0;
}
+
+
+/* We change global data, so we need locking. */
+__libc_lock_define_initialized (static, lock)
+
+
+static struct exit_function_list initial;
+struct exit_function_list *__exit_funcs = &initial;
+
+struct exit_function *
+__new_exitfn (void)
+{
+ struct exit_function_list *l;
+ size_t i = 0;
+
+ __libc_lock_lock (lock);
+
+ for (l = __exit_funcs; l != NULL; l = l->next)
+ {
+ for (i = 0; i < l->idx; ++i)
+ if (l->fns[i].flavor == ef_free)
+ break;
+ if (i < l->idx)
+ break;
+
+ if (l->idx < sizeof (l->fns) / sizeof (l->fns[0]))
+ {
+ i = l->idx++;
+ break;
+ }
+ }
+
+ if (l == NULL)
+ {
+ l = (struct exit_function_list *)
+ malloc (sizeof (struct exit_function_list));
+ if (l != NULL)
+ {
+ l->next = __exit_funcs;
+ __exit_funcs = l;
+
+ l->idx = 1;
+ i = 0;
+ }
+ }
+
+ /* Mark entry as used, but we don't know the flavor now. */
+ if (l != NULL)
+ l->fns[i].flavor = ef_us;
+
+ __libc_lock_unlock (lock);
+
+ return l == NULL ? NULL : &l->fns[i];
+}