util.cpp File Reference

#include <assert.h>
#include <errno.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include <string.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <unistd.h>
#include "cmdopt.h"
#include "util.h"

Include dependency graph for util.cpp:

Go to the source code of this file.

Macros
#define	DEV_NULL   "/dev/null"

Functions
void	warn (const char *const format,...)
void	terminate (const int state, const char *const format,...)
void *	guarded_malloc (const size_t size, const char *const file, const unsigned line)
void *	guarded_realloc (void *source, const size_t size, const char *const file, const unsigned line)
char *	reference_name (const char *data_dir, const char *subdir, const char *mode)
char *	input_name (const char *data_dir, const char *target)
char *	output_name (const char *target)
void	rw_sleep (int seconds)
int	rw_signal (int signo, void(*func)(int))

Macro Definition Documentation

DEV_NULL

#define DEV_NULL   "/dev/null"

util.cpp - Utility function definitions for the exec utility

$Id$

Licensed to the Apache Software Foundation (ASF) under one or more contributor license agreements. See the NOTICE file distributed with this work for additional information regarding copyright ownership. The ASF licenses this file to you under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.

Definition at line 53 of file util.cpp.

Function Documentation

guarded_malloc()

void * guarded_malloc	(	const size_t	size,
		const char *const	file,
		const unsigned	line
	)

Wrapper for malloc (), providing return value checking.

Parameters

size	number of bytes of memory to allocate
file	name of file calling method
line	line number in file method was called from

Returns

(non-null) pointer to allocated bock of memory

Definition at line 97 of file util.cpp.

guarded_realloc()

void * guarded_realloc	(	void *	source,
		const size_t	size,
		const char *const	file,
		const unsigned	line
	)

Wrapper for realloc(), providing return value checking.

Parameters

source	pointer to memory block to reallocate
size	number of bytes of memory to allocate
file	name of file calling method
line	line number in file method was called from

Returns

(non-null) pointer to allocated bock of memory

Definition at line 114 of file util.cpp.

input_name()

char * input_name	(	const char *	data_dir,
		const char *	target
	)

Composes the name of an input file, based on target

Takes a data directory and an executable name, and tries to open an input file based on these variables. If a file is found in neither of two locattions derived from these variables, this method tries to fall back on /dev/null.

Source file locations:

• [data_dir]/manual/in/[target].in
• [data_dir]/tutorial/in/[target].in
• /dev/null

Parameters

data_dir	the path of the reference data directory
target	the name of executable being run

Returns

the name of the file

Definition at line 190 of file util.cpp.

output_name()

char * output_name

(

const char *

target

)

Generates the name of the output file for the executable target.

This function allocates memory which is to be freed by the caller.

Parameters

path	of target to generate output name for

Returns

translation of 'target.out'

Definition at line 227 of file util.cpp.

reference_name()

char * reference_name	(	const char *	data_dir,
		const char *	subdir,
		const char *	mode
	)

Generates the name of a reference (input/output) file.

This function allocates memory which is to be freed by the caller.

Parameters

data_dir	location of example data directory
subdir	example subdirectory to reference
mode	type of file to generate name for (should be 'in' or 'out')

Returns

translation of 'data_dir/subdir/mode/target_name.mode'

Definition at line 132 of file util.cpp.

rw_signal()

int rw_signal	(	int	signo,
		void(*)(int)	func
	)

Portability interface to signal or sigaction.

Parameters

signo	signal number
func	signal handler

Returns

0 on success, -1 otherwise

Definition at line 259 of file util.cpp.

rw_sleep()

void rw_sleep

(

int

seconds

)

Portability interface to sleep.

Parameters

seconds

the number of seconds to sleep

Definition at line 244 of file util.cpp.

terminate()

void terminate	(	const int	state,
		const char *const	format,
			...
	)

Wrapper for exit (), providing a terminal error message on stderr.

Parameters

state	non-zero status code to exit () with
format	printf () format string to display on stderr

Definition at line 76 of file util.cpp.

warn()

void warn	(	const char *const	format,
			...
	)

util.h - Utility macros / prototypes for the runall utility

$Id$

Licensed to the Apache Software Foundation (ASF) under one or more contributor license agreements. See the NOTICE file distributed with this work for additional information regarding copyright ownership. The ASF licenses this file to you under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. Generates a non-terminal error message on stderr.

Parameters

format

printf () format string to display on stderr

Definition at line 58 of file util.cpp.