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unwinder: wait for completion of subprocess

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This commit is contained in:
Christian Hergert
2024-11-13 15:46:01 -08:00
parent a07e7297d6
commit 9c7ede8ad8
1 changed files with 27 additions and 1 deletions
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28
src/sysprofd/ipc-unwinder-impl.c
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@ -46,6 +46,25 @@ child_setup (gpointer data)
prctl (PR_SET_PDEATHSIG, SIGKILL);
}
static void
ipc_unwinder_impl_wait_cb (GObject *object,
GAsyncResult *result,
gpointer user_data)
{
GSubprocess *subprocess = (GSubprocess *)object;
g_autoptr(IpcUnwinderImpl) self = user_data;
g_autoptr(GError) error = NULL;
g_assert (G_IS_SUBPROCESS (subprocess));
g_assert (G_IS_ASYNC_RESULT (result));
g_assert (IPC_IS_UNWINDER_IMPL (self));
if (!g_subprocess_wait_check_finish (subprocess, result, &error))
g_warning ("wait_check failure: %s", error->message);
else
g_info ("sysprof-live-unwinder exited");
}
static gboolean
ipc_unwinder_impl_handle_unwind (IpcUnwinder *unwinder,
GDBusMethodInvocation *invocation,
@ -155,16 +174,23 @@ ipc_unwinder_impl_handle_unwind (IpcUnwinder *unwinder,
if (!(subprocess = g_subprocess_launcher_spawnv (launcher, (const char * const *)argv->pdata, &error)))
{
g_critical ("Failed to start sysprof-live-unwinder: %s", error->message);
g_dbus_method_invocation_return_gerror (g_steal_pointer (&invocation), error);
return TRUE;
}
g_message ("sysprof-live-unwinder started as process %s",
g_subprocess_get_identifier (subprocess));
ipc_unwinder_complete_unwind (unwinder,
g_steal_pointer (&invocation),
out_fd_list,
g_variant_new_handle (capture_fd_handle));
g_subprocess_wait_async (subprocess, NULL, NULL, NULL);
g_subprocess_wait_check_async (subprocess,
NULL,
ipc_unwinder_impl_wait_cb,
g_object_ref (unwinder));
return TRUE;
}