fdo-mirrors/libevdev
1
0
Fork 0
mirror of https://gitlab.freedesktop.org/libevdev/libevdev.git synced 2025-12-20 20:50:07 +01:00
Code Issues Projects Releases Packages Wiki Activity Actions

test: detect if we're running inside gdb and disable forking

Browse source 
The Check test framework forks by default which is annoying when running gdb.
Try to detect whether we're inside gdb by ptracing ourselves. If that works,
we're not inside a debugger. If it doesn't, then assume we're inside a
debugger and set CK_FORK to "no".

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
This commit is contained in:
Peter Hutterer 2013-12-24 08:19:16 +10:00
parent 49f0b9300e
commit fd3118ea1a
2 changed files with 40 additions and 2 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

5
libevdev/libevdev.h
View file

@ -177,8 +177,9 @@ extern "C" {
* git grep "suite_create"
* git grep "tcase_create"
*
* By default, check forks, making debugging harder. Run gdb as below to avoid
* forking.
* By default, Check forks, making debugging harder. The test suite tries to detect
* if it is running inside gdb and disable forking. If that doesn't work for
* some reason, run gdb as below to avoid forking.
*
* sudo CK_FORK=no CK_RUN_TEST="test case name" gdb ./test/test-libevdev
*

37
test/test-main.c
View file

@ -22,6 +22,10 @@
#include <config.h>
#include <check.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/ptrace.h>
#include <sys/wait.h>
extern Suite *event_name_suite(void);
extern Suite *event_code_suite(void);
@ -31,9 +35,42 @@ extern Suite *libevdev_has_event_test(void);
extern Suite *libevdev_events(void);
extern Suite *uinput_suite(void);
static int
is_debugger_attached(void)
{
int status;
int rc;
int pid = fork();
if (pid == -1)
return 0;
if (pid == 0) {
int ppid = getppid();
if (ptrace(PTRACE_ATTACH, ppid, NULL, NULL) == 0) {
waitpid(ppid, NULL, 0);
ptrace(PTRACE_CONT, NULL, NULL);
ptrace(PTRACE_DETACH, ppid, NULL, NULL);
rc = 0;
} else
rc = 1;
_exit(rc);
} else {
waitpid(pid, &status, 0);
rc = WEXITSTATUS(status);
}
return rc;
}
int main(int argc, char **argv)
{
int failed;
if (is_debugger_attached())
setenv("CK_FORK", "no", 0);
Suite *s = libevdev_has_event_test();
SRunner *sr = srunner_create(s);
srunner_add_suite(sr, libevdev_events());