From 0629b78d815ce6a0b65aecc02fb18a122226274c Mon Sep 17 00:00:00 2001 From: Luke Shumaker Date: Wed, 25 May 2016 23:32:14 -0400 Subject: stuff --- src/basic/async.c | 94 ------------------------------------------------------- 1 file changed, 94 deletions(-) delete mode 100644 src/basic/async.c (limited to 'src/basic/async.c') diff --git a/src/basic/async.c b/src/basic/async.c deleted file mode 100644 index a1f163f27b..0000000000 --- a/src/basic/async.c +++ /dev/null @@ -1,94 +0,0 @@ -/*** - This file is part of systemd. - - Copyright 2013 Lennart Poettering - - systemd is free software; you can redistribute it and/or modify it - under the terms of the GNU Lesser General Public License as published by - the Free Software Foundation; either version 2.1 of the License, or - (at your option) any later version. - - systemd 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 - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public License - along with systemd; If not, see . -***/ - -#include -#include -#include -#include - -#include "async.h" -#include "fd-util.h" -#include "log.h" -#include "macro.h" -#include "util.h" - -int asynchronous_job(void* (*func)(void *p), void *arg) { - pthread_attr_t a; - pthread_t t; - int r; - - /* It kinda sucks that we have to resort to threads to - * implement an asynchronous sync(), but well, such is - * life. - * - * Note that issuing this command right before exiting a - * process will cause the process to wait for the sync() to - * complete. This function hence is nicely asynchronous really - * only in long running processes. */ - - r = pthread_attr_init(&a); - if (r > 0) - return -r; - - r = pthread_attr_setdetachstate(&a, PTHREAD_CREATE_DETACHED); - if (r > 0) - goto finish; - - r = pthread_create(&t, &a, func, arg); - -finish: - pthread_attr_destroy(&a); - return -r; -} - -static void *sync_thread(void *p) { - sync(); - return NULL; -} - -int asynchronous_sync(void) { - log_debug("Spawning new thread for sync"); - - return asynchronous_job(sync_thread, NULL); -} - -static void *close_thread(void *p) { - assert_se(close_nointr(PTR_TO_FD(p)) != -EBADF); - return NULL; -} - -int asynchronous_close(int fd) { - int r; - - /* This is supposed to behave similar to safe_close(), but - * actually invoke close() asynchronously, so that it will - * never block. Ideally the kernel would have an API for this, - * but it doesn't, so we work around it, and hide this as a - * far away as we can. */ - - if (fd >= 0) { - PROTECT_ERRNO; - - r = asynchronous_job(close_thread, FD_TO_PTR(fd)); - if (r < 0) - assert_se(close_nointr(fd) != -EBADF); - } - - return -1; -} -- cgit v1.2.3-54-g00ecf