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lib/drmtest: Add igt_wait_helper

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igt_wait_helper compliments igt_stop_helper and is used when helper
processes are expected to exit naturally.

Signed-off-by: Jeff McGee <jeff.mcgee@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Jeff McGee 2014-01-28 18:25:04 -06:00 committed by Daniel Vetter
parent 3bada1626c
commit fd3fcbd3b3
2 changed files with 18 additions and 0 deletions
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17
lib/drmtest.c
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@ -1246,6 +1246,23 @@ void igt_stop_helper(struct igt_helper_process *proc)
helper_process_count--;
}
void igt_wait_helper(struct igt_helper_process *proc)
{
int status;
assert(proc->running);
while (waitpid(proc->pid, &status, 0) == -1 &&
errno == EINTR)
;
igt_assert(WIFEXITED(status) && WEXITSTATUS(status) == 0);
proc->running = false;
helper_process_pids[proc->id] = -1;
helper_process_count--;
}
static void children_exit_handler(int sig)
{
int ret;

1
lib/drmtest.h
View File

@ -290,6 +290,7 @@ struct igt_helper_process {
};
bool __igt_fork_helper(struct igt_helper_process *proc);
void igt_stop_helper(struct igt_helper_process *proc);
void igt_wait_helper(struct igt_helper_process *proc);
#define igt_fork_helper(proc) \
for (; __igt_fork_helper(proc); exit(0))