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authorUlrich Drepper <drepper@redhat.com>2004-01-24 20:12:10 +0000
committerUlrich Drepper <drepper@redhat.com>2004-01-24 20:12:10 +0000
commitbed12f78fab86b2349cab6e7f4c0e46bde5e9711 (patch)
tree5e98ba1f47f60b6e5cd4461c3fba7d01cd8add51 /elf/tst-dlmodcount.c
parente8648a5a87fd0c472cb6002df8111b9a8ec3fba6 (diff)
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Update.
2004-01-23 David Mosberger <davidm@hpl.hp.com> * sysdeps/generic/ldsodefs.h (struct rtld_global): Add members _dl_load_adds and _dl_load_subs. * elf/dl-support.c (_dl_load_adds): New variable. (_dl_load_subs): Likewise. * elf/dl-object.c (_dl_new_object): Increment dl_load_adds. * elf/dl-close.c (_dl_close): Increment dl_load_subs. * elf/link.h (struct dl_phdr_info): Add members dlpi_adds and dlpi_subs. * include/link.h: Likewise. * elf/dl-iteratephdr.c (__dl_iterate_phdr): Initialize dlpi_adds and dlpi_subs members. (dl_iterate_phdr): Likewise. * elf/tst-dlmodcount.c: New file. * elf/Makefile (distribute): Mention tst-dlmodcount.c. (tests): If build-shared, mention tst-dlmodcount. ($(objpfx)tst-dlmodcount): If build-shared, build and run tst-dlmodcount.
Diffstat (limited to 'elf/tst-dlmodcount.c')
-rw-r--r--elf/tst-dlmodcount.c107
1 files changed, 107 insertions, 0 deletions
diff --git a/elf/tst-dlmodcount.c b/elf/tst-dlmodcount.c
new file mode 100644
index 0000000..b48ed0e
--- /dev/null
+++ b/elf/tst-dlmodcount.c
@@ -0,0 +1,107 @@
+/* Copyright (C) 2004 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by David Mosberger <davidm@hpl.hp.com>, 2004.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#include <link.h>
+#include <stdio.h>
+
+#define SET 0
+#define ADD 1
+#define REMOVE 2
+
+#define leq(l,r) (((r) - (l)) <= ~0ULL / 2)
+
+static int
+callback (struct dl_phdr_info *info, size_t size, void *ptr)
+{
+ static int last_adds = 0, last_subs = 0;
+ intptr_t cmd = (intptr_t) ptr;
+
+ printf (" size = %Zu\n", size);
+ if (size < (offsetof (struct dl_phdr_info, dlpi_subs)
+ + sizeof (info->dlpi_subs)))
+ {
+ fprintf (stderr, "dl_iterate_phdr failed to pass dlpi_adds/dlpi_subs\n");
+ exit (5);
+ }
+
+ printf (" dlpi_adds = %Lu dlpi_subs = %Lu\n",
+ info->dlpi_adds, info->dlpi_subs);
+
+ switch (cmd)
+ {
+ case SET:
+ break;
+
+ case ADD:
+ if (leq (info->dlpi_adds, last_adds))
+ {
+ fprintf (stderr, "dlpi_adds failed to get incremented!\n");
+ exit (3);
+ }
+ break;
+
+ case REMOVE:
+ if (leq (info->dlpi_subs, last_subs))
+ {
+ fprintf (stderr, "dlpi_subs failed to get incremented!\n");
+ exit (4);
+ }
+ break;
+ }
+ last_adds = info->dlpi_adds;
+ last_subs = info->dlpi_subs;
+ return -1;
+}
+
+static void *
+load (const char *path)
+{
+ void *handle;
+
+ printf ("loading `%s'\n", path);
+ handle = dlopen (path, RTLD_LAZY);
+ if (!handle)
+ exit (1);
+ dl_iterate_phdr (callback, (void *)(intptr_t) ADD);
+ return handle;
+}
+
+static void
+unload (const char *path, void *handle)
+{
+ int ret;
+
+ printf ("unloading `%s'\n", path);
+ if (dlclose (handle) < 0)
+ exit (2);
+ dl_iterate_phdr (callback, (void *)(intptr_t) REMOVE);
+}
+
+int
+main (int argc, char **argv)
+{
+ void *handle1, *handle2;
+
+ dl_iterate_phdr (callback, (void *)(intptr_t) SET);
+ handle1 = load ("firstobj.so");
+ handle2 = load ("globalmod1.so");
+ unload ("firstobj.so", handle1);
+ unload ("globalmod1.so", handle2);
+ return 0;
+}