1 /* src/toolbox/util.c - contains some utility functions
3 Copyright (C) 1996-2005, 2006 R. Grafl, A. Krall, C. Kruegel,
4 C. Oates, R. Obermaisser, M. Platter, M. Probst, S. Ring,
5 E. Steiner, C. Thalinger, D. Thuernbeck, P. Tomsich, C. Ullrich,
6 J. Wenninger, Institut f. Computersprachen - TU Wien
8 This file is part of CACAO.
10 This program is free software; you can redistribute it and/or
11 modify it under the terms of the GNU General Public License as
12 published by the Free Software Foundation; either version 2, or (at
13 your option) any later version.
15 This program is distributed in the hope that it will be useful, but
16 WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 General Public License for more details.
20 You should have received a copy of the GNU General Public License
21 along with this program; if not, write to the Free Software
22 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
25 Contact: cacao@cacaojvm.org
27 Authors: Christian Thalinger
31 $Id: util.c 5104 2006-07-10 17:22:18Z twisti $
46 #include "mm/memory.h"
47 #include "vm/exceptions.h"
48 #include "vm/stringlocal.h"
52 /* _Jv_getcwd ******************************************************************
54 Return the current working directory.
57 pointer to a char array allocated by MNEW, or
58 NULL if memory could not be allocated.
60 *******************************************************************************/
62 char *_Jv_getcwd(void)
69 buf = MNEW(char, size);
72 if (getcwd(buf, size) != NULL)
75 MFREE(buf, char, size);
77 /* too small buffer or a more serious problem */
80 throw_cacao_exception_exit(string_java_lang_InternalError,
83 /* double the buffer size */
87 buf = MNEW(char, size);
94 /* get_variable_message_length *************************************************
96 This function simluates the print of a variable message and
97 determines so the message length;
99 *******************************************************************************/
101 int get_variable_message_length(const char *fmt, va_list ap)
105 n = vsnprintf(NULL, 0, fmt, ap);
107 #if defined(__IRIX__)
108 /* We know that IRIX returns -1 if the buffer is NULL */
114 size = 100; /* start with 100-bytes */
116 p = MNEW(char, size);
119 /* Try to print in the allocated space. */
121 n = vsnprintf(p, size, fmt, ap);
123 /* If that worked, return the length. */
124 if (n > -1 && n < size)
127 /* Else try again with more space. */
128 size *= 2; /* twice the old size */
130 if ((np = MREALLOC(p, char, size, size)) == NULL) {
143 /* util_current_time_millis ****************************************************
145 Return the current time in milliseconds.
147 *******************************************************************************/
149 s8 util_current_time_millis(void)
154 if (gettimeofday(&tv, NULL) == -1)
155 vm_abort("gettimeofday failed: %s", strerror(errno));
157 result = (s8) tv.tv_sec;
159 result += (tv.tv_usec / 1000);
166 * These are local overrides for various environment variables in Emacs.
167 * Please do not remove this and leave it at the end of the file, where
168 * Emacs will automagically detect them.
169 * ---------------------------------------------------------------------
172 * indent-tabs-mode: t