| /* |
| * Copyright (C) 2012 Cyril Hrubis chrubis@suse.cz |
| * |
| * This program is free software; you can redistribute it and/or modify it |
| * under the terms of version 2 of the GNU General Public License as |
| * published by the Free Software Foundation. |
| * |
| * This program is distributed in the hope that it would be useful, but |
| * WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. |
| * |
| * Further, this software is distributed without any warranty that it is |
| * free of the rightful claim of any third person regarding infringement |
| * or the like. Any license provided herein, whether implied or |
| * otherwise, applies only to this software file. Patent licenses, if |
| * any, provided herein do not apply to combinations of this program with |
| * other software, or any other product whatsoever. |
| * |
| * You should have received a copy of the GNU General Public License along |
| * with this program; if not, write the Free Software Foundation, Inc., |
| * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. |
| */ |
| |
| /* |
| |
| Checkpoint - easy to use parent-child synchronization. |
| |
| Note that there are two differnt usages and two different wait and signal |
| functions. The choice depends on whether we want parent wait for child or |
| child for parent. |
| |
| */ |
| |
| #ifndef TST_CHECKPOINT |
| #define TST_CHECKPOINT |
| |
| #include "test.h" |
| |
| #define TST_CHECKPOINT_FIFO "tst_checkpoint_fifo" |
| |
| struct tst_checkpoint { |
| /* child return value in case of failure */ |
| int retval; |
| /* timeout in msecs */ |
| unsigned int timeout; |
| }; |
| |
| /* |
| * Checkpoint initializaton, must be done first. |
| */ |
| #define TST_CHECKPOINT_INIT(self) \ |
| tst_checkpoint_init(__FILE__, __LINE__, self) |
| |
| void tst_checkpoint_init(const char *file, const int lineno, |
| struct tst_checkpoint *self); |
| |
| /* |
| * Wait called from parent. In case parent waits for child. |
| */ |
| #define TST_CHECKPOINT_PARENT_WAIT(cleanup_fn, self) \ |
| tst_checkpoint_parent_wait(__FILE__, __LINE__, (cleanup_fn), self) |
| |
| void tst_checkpoint_parent_wait(const char *file, const int lineno, |
| void (*cleanup_fn)(void), |
| struct tst_checkpoint *self); |
| |
| /* |
| * Wait called from child. In case child waits for parent. |
| */ |
| #define TST_CHECKPOINT_CHILD_WAIT(self) \ |
| tst_checkpoint_child_wait(__FILE__, __LINE__, self) |
| |
| void tst_checkpoint_child_wait(const char *file, const int lineno, |
| struct tst_checkpoint *self); |
| |
| /* |
| * Signals parent that child has reached the checkpoint. Called from child. |
| */ |
| #define TST_CHECKPOINT_SIGNAL_PARENT(self) \ |
| tst_checkpoint_signal_parent(__FILE__, __LINE__, self) |
| |
| void tst_checkpoint_signal_parent(const char *file, const int lineno, |
| struct tst_checkpoint *self); |
| |
| /* |
| * Signals child that parent has reached the checkpoint. Called from parent. |
| */ |
| #define TST_CHECKPOINT_SIGNAL_CHILD(cleanup_fn, self) \ |
| tst_checkpoint_signal_child(__FILE__, __LINE__, (cleanup_fn), self) |
| |
| void tst_checkpoint_signal_child(const char *file, const int lineno, |
| void (*cleanup_fn)(void), |
| struct tst_checkpoint *self); |
| |
| #endif /* TST_CHECKPOINT */ |