Squashed 'third_party/elfutils/' content from commit 555e15e
Change-Id: I61cde98949e47e5c8c09c33260de17f30921be79
git-subtree-dir: third_party/elfutils
git-subtree-split: 555e15ebe8bf1eb33d00747173cfc80cc65648a4
diff --git a/tests/dwfl-proc-attach.c b/tests/dwfl-proc-attach.c
new file mode 100644
index 0000000..e7bb201
--- /dev/null
+++ b/tests/dwfl-proc-attach.c
@@ -0,0 +1,103 @@
+/* Test dwfl_linux_proc_attach works without any modules.
+ Copyright (C) 2015 Red Hat, Inc.
+ This file is part of elfutils.
+
+ This file is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ elfutils 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 General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
+
+#include <config.h>
+#include <inttypes.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <error.h>
+#include <unistd.h>
+#ifdef __linux__
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/user.h>
+#include <fcntl.h>
+#include <string.h>
+#include ELFUTILS_HEADER(dwfl)
+#include <pthread.h>
+#endif
+
+#ifndef __linux__
+int
+main (int argc __attribute__ ((unused)), char **argv __attribute__ ((unused)))
+{
+ printf ("dwfl_linux_proc_attach unsupported.\n");
+ return 77;
+}
+#else /* __linux__ */
+
+static pthread_t thread1;
+static pthread_t thread2;
+
+static void *
+sleeper (void* d __attribute__ ((unused)))
+{
+ sleep (60);
+ return NULL;
+}
+
+static char *debuginfo_path = NULL;
+
+static const Dwfl_Callbacks proc_callbacks =
+ {
+ .find_elf = dwfl_linux_proc_find_elf,
+ .find_debuginfo = dwfl_standard_find_debuginfo,
+ .debuginfo_path = &debuginfo_path,
+ };
+
+static int
+thread_callback (Dwfl_Thread *thread, void *thread_arg)
+{
+ int *threads = (int *) thread_arg;
+ pid_t tid = dwfl_thread_tid (thread);
+ printf ("thread tid: %d\n", tid);
+ (*threads)++;
+
+ return DWARF_CB_OK;
+}
+
+int
+main (int argc __attribute__ ((unused)),
+ char **argv __attribute__ ((unused)))
+{
+ /* Create two extra threads to iterate through. */
+ int err;
+ if ((err = pthread_create (&thread1, NULL, sleeper, NULL)) != 0)
+ error (-1, err, "Couldn't create thread1");
+ if ((err = pthread_create (&thread2, NULL, sleeper, NULL)) != 0)
+ error (-1, err, "Couldn't create thread2");
+
+ Dwfl *dwfl = dwfl_begin (&proc_callbacks);
+ if (dwfl == NULL)
+ error (-1, 0, "dwfl_begin: %s", dwfl_errmsg (-1));
+
+ pid_t pid = getpid ();
+ /* This used to fail, since we don't have any modules yet. */
+ if (dwfl_linux_proc_attach (dwfl, pid, false) < 0)
+ error (-1, 0, "dwfl_linux_proc_attach pid %d: %s", pid,
+ dwfl_errmsg (-1));
+
+ /* Did we see all 3 threads? */
+ int threads = 0;
+ if (dwfl_getthreads (dwfl, thread_callback, &threads) != DWARF_CB_OK)
+ error (-1, 0, "dwfl_getthreads failed: %s", dwfl_errmsg (-1));
+
+ return (threads == 3) ? 0 : -1;
+}
+
+#endif /* __linux__ */