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/*
* Copyright (C) 2000-2002 the xine project
*
* This file is part of xine, a free video player.
*
* xine is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* xine 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*
* $Id: utils.c,v 1.13 2003/04/20 21:13:28 guenter Exp $
*
*/
#define _POSIX_PTHREAD_SEMANTICS 1 /* for 5-arg getpwuid_r on solaris */
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <string.h>
#include <unistd.h>
#include <pwd.h>
#include <time.h>
#include <sys/types.h>
#include <pthread.h>
#if HAVE_EXECINFO_H
#include <execinfo.h>
#endif
#if HAVE_UCONTEXT_H
#include <ucontext.h>
#endif
#include "compat.h"
void *xine_xmalloc(size_t size) {
void *ptr;
/* prevent xine_xmalloc(0) of possibly returning NULL */
if( !size )
size++;
if((ptr = calloc(1, size)) == NULL) {
fprintf(stderr, "%s: malloc() failed: %s.\n",
__XINE_FUNCTION__, strerror(errno));
return NULL;
}
return ptr;
}
void *xine_xmalloc_aligned(size_t alignment, size_t size, void **base) {
char *ptr;
*base = ptr = xine_xmalloc (size+alignment);
while ((int) ptr % alignment)
ptr++;
return ptr;
}
#ifndef BUFSIZ
#define BUFSIZ 256
#endif
const char *xine_get_homedir(void) {
#ifdef WIN32
return XINE_HOMEDIR;
#else
struct passwd pwd, *pw = NULL;
static char homedir[BUFSIZ] = {0,};
if(homedir[0])
return homedir;
#ifdef HAVE_GETPWUID_R
if(getpwuid_r(getuid(), &pwd, homedir, sizeof(homedir), &pw) != 0 || pw == NULL) {
#else
if((pw = getpwuid(getuid())) == NULL) {
#endif
char *tmp = getenv("HOME");
if(tmp) {
strncpy(homedir, tmp, sizeof(homedir));
homedir[sizeof(homedir) - 1] = '\0';
}
} else {
strncpy(homedir, pw->pw_dir, sizeof(homedir));
homedir[sizeof(homedir) - 1] = '\0';
}
if(!homedir[0]) {
printf("xine_get_homedir: Unable to get home directory, set it to /tmp.\n");
strcpy(homedir, "/tmp");
}
return homedir;
#endif /* _MSC_VER */
}
char *xine_chomp(char *str) {
char *pbuf;
pbuf = str;
while(*pbuf != '\0') pbuf++;
while(pbuf > str) {
if(*pbuf == '\r' || *pbuf == '\n' || *pbuf == '"') pbuf = '\0';
pbuf--;
}
while(*pbuf == '=' || *pbuf == '"') pbuf++;
return pbuf;
}
/*
* a thread-safe usecond sleep
*/
void xine_usec_sleep(unsigned usec) {
#if HAVE_NANOSLEEP
/* nanosleep is prefered on solaris, because it's mt-safe */
struct timespec ts;
ts.tv_sec = usec / 1000000;
ts.tv_nsec = (usec % 1000000) * 1000;
nanosleep(&ts, NULL);
#else
usleep(usec);
#endif
}
/* Obtain a backtrace and print it to stdout. */
void xine_print_trace (void) {
#if HAVE_BACKTRACE
/* Code Taken from GNU C Library manual */
void *array[10];
size_t size;
char **strings;
size_t i;
size = backtrace (array, 10);
strings = backtrace_symbols (array, size);
printf ("Obtained %d stack frames.\n", size);
for (i = 0; i < size; i++) {
printf ("%s\n", strings[i]);
}
free (strings);
#elif HAVE_PRINTSTACK
printstack(STDOUT_FILENO);
#else
printf("stack backtrace not available.\n");
#endif
}
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