aboutsummaryrefslogtreecommitdiff
path: root/elf
diff options
context:
space:
mode:
authorUlrich Drepper <drepper@redhat.com>2002-02-14 03:54:02 +0000
committerUlrich Drepper <drepper@redhat.com>2002-02-14 03:54:02 +0000
commitbb4cb25213ce21326236d72e8633844e4a777a8b (patch)
treebd5beb6cab8d11d014acabe022e54d8efb8915e4 /elf
parent736ab899c4ab56dea0d329583f73e3f2b54a1dc1 (diff)
downloadglibc-bb4cb25213ce21326236d72e8633844e4a777a8b.zip
glibc-bb4cb25213ce21326236d72e8633844e4a777a8b.tar.gz
glibc-bb4cb25213ce21326236d72e8633844e4a777a8b.tar.bz2
Update.
* elf/dl-close.c (_dl_close): When closing an object using TLS either decrement dl_tls_max_dtv_idx or set dl_tls_dtv_gaps to true. Increment dl_tls_generation only if we closed any TLS-using object. * elf/tst-tls6.c: New file. * elf/Makefile: Add rules to build and run tst-tls6.
Diffstat (limited to 'elf')
-rw-r--r--elf/Makefile5
-rw-r--r--elf/dl-close.c8
-rw-r--r--elf/tst-tls6.c90
3 files changed, 101 insertions, 2 deletions
diff --git a/elf/Makefile b/elf/Makefile
index 4ef1614..1a0338a 100644
--- a/elf/Makefile
+++ b/elf/Makefile
@@ -119,7 +119,7 @@ tests = loadtest restest1 preloadtest loadfail multiload origtest resolvfail \
$(tests-nodlopen-$(have-z-nodlopen)) neededtest neededtest2 \
neededtest3 neededtest4 unload2 lateglobal initfirst global \
restest2 next dblload dblunload reldep5 reldep6 tst-tls1 tst-tls2 \
- tst-tls3 tst-tls4 tst-tls5
+ tst-tls3 tst-tls4 tst-tls5 tst-tls6
test-srcs = tst-pathopt
tests-vis-yes = vismain
tests-nodelete-yes = nodelete
@@ -448,3 +448,6 @@ $(objpfx)tst-tls4.out: $(objpfx)tst-tlsmod2.so
$(objpfx)tst-tls5: $(libdl)
$(objpfx)tst-tls5.out: $(objpfx)tst-tlsmod2.so
+
+$(objpfx)tst-tls6: $(libdl)
+$(objpfx)tst-tls6.out: $(objpfx)tst-tlsmod2.so
diff --git a/elf/dl-close.c b/elf/dl-close.c
index 8eefb35..7e7547d 100644
--- a/elf/dl-close.c
+++ b/elf/dl-close.c
@@ -228,6 +228,11 @@ _dl_close (void *_map)
listp->slotinfo[idx].map = NULL;
any_tls = true;
+
+ if (imap->l_tls_modid == GL(dl_tls_max_dtv_idx))
+ --GL(dl_tls_max_dtv_idx);
+ else
+ GL(dl_tls_dtv_gaps) = true;
}
#endif
@@ -307,7 +312,8 @@ _dl_close (void *_map)
#ifdef USE_TLS
/* If we removed any object which uses TLS bumnp the generation
counter. */
- ++GL(dl_tls_generation);
+ if (any_tls)
+ ++GL(dl_tls_generation);
#endif
/* Notify the debugger those objects are finalized and gone. */
diff --git a/elf/tst-tls6.c b/elf/tst-tls6.c
new file mode 100644
index 0000000..2c015ef
--- /dev/null
+++ b/elf/tst-tls6.c
@@ -0,0 +1,90 @@
+#include <dlfcn.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+#include <link.h>
+#include <tls.h>
+
+
+#define TEST_FUNCTION do_test ()
+static int
+do_test (void)
+{
+#ifdef USE_TLS
+ static const char modname[] = "tst-tlsmod2.so";
+ int result = 0;
+ int *foop;
+ int *foop2;
+ int (*fp) (int, int *);
+ void *h;
+ int i;
+ int modid = -1;
+
+ for (i = 0; i < 10; ++i)
+ {
+ h = dlopen (modname, RTLD_LAZY);
+ if (h == NULL)
+ {
+ printf ("cannot open '%s': %s\n", modname, dlerror ());
+ exit (1);
+ }
+
+ /* Dirty test code here: we peek into a private data structure.
+ We make sure that the module gets assigned the same ID every
+ time. The value of the first round is used. */
+ if (modid == -1)
+ modid = ((struct link_map *) h)->l_tls_modid;
+ else if (((struct link_map *) h)->l_tls_modid != modid)
+ {
+ printf ("round %d: modid now %d, initially %d\n",
+ i, ((struct link_map *) h)->l_tls_modid, modid);
+ result = 1;
+ }
+
+ foop = dlsym (h, "foo");
+ if (foop == NULL)
+ {
+ printf ("cannot get symbol 'foo': %s\n", dlerror ());
+ exit (1);
+ }
+
+ *foop = 42 + i;
+
+ fp = dlsym (h, "in_dso");
+ if (fp == NULL)
+ {
+ printf ("cannot get symbol 'in_dso': %s\n", dlerror ());
+ exit (1);
+ }
+
+ result |= fp (42 + i, foop);
+
+ foop2 = dlsym (h, "foo");
+ if (foop2 == NULL)
+ {
+ printf ("cannot get symbol 'foo' the second time: %s\n", dlerror ());
+ exit (1);
+ }
+
+ if (foop != foop2)
+ {
+ puts ("address of 'foo' different the second time");
+ result = 1;
+ }
+ else if (*foop != 16)
+ {
+ puts ("foo != 16");
+ result = 1;
+ }
+
+ dlclose (h);
+ }
+
+ return result;
+#else
+ return 0;
+#endif
+}
+
+
+#include "../test-skeleton.c"