Commit 266fb28c authored by zorglub's avatar zorglub

Dynamic array with log allocation

parent 531bbc54
/*****************************************************************************
* vlc_arrays.h : Arrays and data structures handling
*****************************************************************************
* Copyright (C) 1999-2004 the VideoLAN team
* $Id: vlc_playlist.h 17108 2006-10-15 15:28:34Z zorglub $
*
* Authors: Samuel Hocevar <sam@zoy.org>
* Clément Stenac <zorglub@videolan.org>
*
* This program 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.
*
* This program 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., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA. *****************************************************************************/
#ifndef _VLC_ARRAYS_H_
#define _VLC_ARRAYS_H_
/**
* Simple dynamic array handling. Array is realloced at each insert/removal
*/
#if defined( _MSC_VER ) && _MSC_VER < 1300 && !defined( UNDER_CE )
# define VLCCVP (void**) /* Work-around for broken compiler */
#else
# define VLCCVP
#endif
#define INSERT_ELEM( p_ar, i_oldsize, i_pos, elem ) \
do \
{ \
if( !i_oldsize ) (p_ar) = NULL; \
(p_ar) = VLCCVP realloc( p_ar, ((i_oldsize) + 1) * sizeof(*(p_ar)) ); \
if( (i_oldsize) - (i_pos) ) \
{ \
memmove( (p_ar) + (i_pos) + 1, (p_ar) + (i_pos), \
((i_oldsize) - (i_pos)) * sizeof( *(p_ar) ) ); \
} \
(p_ar)[i_pos] = elem; \
(i_oldsize)++; \
} \
while( 0 )
#define REMOVE_ELEM( p_ar, i_oldsize, i_pos ) \
do \
{ \
if( (i_oldsize) - (i_pos) - 1 ) \
{ \
memmove( (p_ar) + (i_pos), \
(p_ar) + (i_pos) + 1, \
((i_oldsize) - (i_pos) - 1) * sizeof( *(p_ar) ) ); \
} \
if( i_oldsize > 1 ) \
{ \
(p_ar) = realloc( p_ar, ((i_oldsize) - 1) * sizeof( *(p_ar) ) ); \
} \
else \
{ \
free( p_ar ); \
(p_ar) = NULL; \
} \
(i_oldsize)--; \
} \
while( 0 )
#define TAB_APPEND( count, tab, p ) \
if( (count) > 0 ) \
{ \
(tab) = realloc( tab, sizeof( void ** ) * ( (count) + 1 ) ); \
} \
else \
{ \
(tab) = malloc( sizeof( void ** ) ); \
} \
(tab)[count] = (p); \
(count)++
#define TAB_FIND( count, tab, p, index ) \
{ \
int _i_; \
(index) = -1; \
for( _i_ = 0; _i_ < (count); _i_++ ) \
{ \
if( (tab)[_i_] == (p) ) \
{ \
(index) = _i_; \
break; \
} \
} \
}
#define TAB_REMOVE( count, tab, p ) \
{ \
int _i_index_; \
TAB_FIND( count, tab, p, _i_index_ ); \
if( _i_index_ >= 0 ) \
{ \
if( (count) > 1 ) \
{ \
memmove( ((void**)(tab) + _i_index_), \
((void**)(tab) + _i_index_+1), \
( (count) - _i_index_ - 1 ) * sizeof( void* ) );\
} \
(count)--; \
if( (count) == 0 ) \
{ \
free( tab ); \
(tab) = NULL; \
} \
} \
}
/**
* Binary search in an array
* \param entries array of entries
* \param count number of entries
* \param elem key to check within an entry (like .id, or ->i_id)
* \param zetype type of the key
* \param key value of the key
* \param answer index of answer within the array. -1 if not found
*/
#define BSEARCH( entries, count, elem, zetype, key, answer ) { \
int low = 0, high = count - 1; \
answer = -1; \
while( low <= high ) {\
int mid = (low + high ) / 2; /* Just don't care about 2^30 tables */ \
zetype mid_val = entries[mid] elem;\
if( mid_val < key ) \
low = mid + 1; \
else if ( mid_val > key ) \
high = mid -1; \
else \
{ \
answer = mid; break; \
}\
} \
}
/* Dictionnary handling */
struct dict_entry_t
{
int i_int;
char *psz_string;
uint64_t i_hash;
void *p_data;
};
struct dict_t
{
dict_entry_t *p_entries;
int i_entries;
};
VLC_EXPORT( dict_t *, vlc_DictNew, (void) );
VLC_EXPORT( void, vlc_DictClear, (dict_t * ) );
VLC_EXPORT( void, vlc_DictInsert, (dict_t *, int, const char *, void * ) );
VLC_EXPORT( void*, vlc_DictGet, (dict_t *, int, const char * ) );
VLC_EXPORT( int, vlc_DictLookup, (dict_t *, int, const char * ) );
/************************************************************************
* Dynamic arrays with progressive allocation
************************************************************************/
/* Internal functions */
//printf("Realloc from %i to %i\n", array.i_alloc, newsize);
#define _ARRAY_ALLOC(array, newsize) { \
array.i_alloc = newsize; \
array.p_elems = VLCCVP realloc( array.p_elems, array.i_alloc * \
sizeof(*array.p_elems) ); \
assert(array.p_elems); \
}
#define _ARRAY_GROW1(array) { \
if( array.i_alloc < 10 ) \
_ARRAY_ALLOC(array, 10 ) \
else if( array.i_alloc == array.i_size ) \
_ARRAY_ALLOC(array, (int)(array.i_alloc * 1.5) ) \
}
#define _ARRAY_GROW(array,additional) { \
int i_first = array.i_alloc; \
while( array.i_alloc - i_first < additional ) \
{ \
if( array.i_alloc < 10 ) \
_ARRAY_ALLOC(array, 10 ) \
else if( array.i_alloc == array.i_size ) \
_ARRAY_ALLOC(array, (int)(array.i_alloc * 1.5) ) \
else break; \
} \
}
#define _ARRAY_SHRINK(array) { \
if( array.i_size > 10 && array.i_size < (int)(array.i_alloc / 1.5) ) { \
_ARRAY_ALLOC(array, array.i_size + 5); \
} \
}
/* API */
#define DECL_ARRAY(type) struct { \
int i_alloc; \
int i_size; \
type *p_elems; \
}
#define TYPEDEF_ARRAY(type, name) typedef DECL_ARRAY(type) name;
#define ARRAY_INIT(array) \
array.i_alloc = 0; \
array.i_size = 0; \
array.p_elems = NULL;
#define ARRAY_APPEND(array, elem) { \
_ARRAY_GROW1(array); \
array.p_elems[array.i_size] = elem; \
array.i_size++; \
}
#define ARRAY_INSERT(array,elem,pos) { \
_ARRAY_GROW1(array); \
if( array.i_size - pos ) { \
memmove( array.p_elems + pos + 1, array.p_elems + pos, \
(array.i_size-pos) * sizeof(*array.p_elems) ); \
} \
array.p_elems[pos] = elem; \
array.i_size++; \
}
#define ARRAY_REMOVE(array,pos) { \
if( array.i_size - (pos) - 1 ) \
{ \
memmove( array.p_elems + pos, array.p_elems + pos + 1, \
( array.i_size - pos - 1 ) *sizeof(*array.p_elems) ); \
} \
array.i_size--; \
_ARRAY_SHRINK(array); \
}
#endif
......@@ -633,135 +633,7 @@ static int64_t GCD( int64_t a, int64_t b )
#define FREENULL(a) if( a ) { free( a ); a = NULL; }
#define FREE(a) if( a ) { free( a ); }
/* Dynamic array handling: realloc array, move data, increment position */
#if defined( _MSC_VER ) && _MSC_VER < 1300 && !defined( UNDER_CE )
# define VLCCVP (void**) /* Work-around for broken compiler */
#else
# define VLCCVP
#endif
#define INSERT_ELEM( p_ar, i_oldsize, i_pos, elem ) \
do \
{ \
if( !i_oldsize ) (p_ar) = NULL; \
(p_ar) = VLCCVP realloc( p_ar, ((i_oldsize) + 1) * sizeof(*(p_ar)) ); \
if( (i_oldsize) - (i_pos) ) \
{ \
memmove( (p_ar) + (i_pos) + 1, (p_ar) + (i_pos), \
((i_oldsize) - (i_pos)) * sizeof( *(p_ar) ) ); \
} \
(p_ar)[i_pos] = elem; \
(i_oldsize)++; \
} \
while( 0 )
#define REMOVE_ELEM( p_ar, i_oldsize, i_pos ) \
do \
{ \
if( (i_oldsize) - (i_pos) - 1 ) \
{ \
memmove( (p_ar) + (i_pos), \
(p_ar) + (i_pos) + 1, \
((i_oldsize) - (i_pos) - 1) * sizeof( *(p_ar) ) ); \
} \
if( i_oldsize > 1 ) \
{ \
(p_ar) = realloc( p_ar, ((i_oldsize) - 1) * sizeof( *(p_ar) ) ); \
} \
else \
{ \
free( p_ar ); \
(p_ar) = NULL; \
} \
(i_oldsize)--; \
} \
while( 0 )
#define TAB_APPEND( count, tab, p ) \
if( (count) > 0 ) \
{ \
(tab) = realloc( tab, sizeof( void ** ) * ( (count) + 1 ) ); \
} \
else \
{ \
(tab) = malloc( sizeof( void ** ) ); \
} \
(tab)[count] = (p); \
(count)++
#define TAB_FIND( count, tab, p, index ) \
{ \
int _i_; \
(index) = -1; \
for( _i_ = 0; _i_ < (count); _i_++ ) \
{ \
if( (tab)[_i_] == (p) ) \
{ \
(index) = _i_; \
break; \
} \
} \
}
#define TAB_REMOVE( count, tab, p ) \
{ \
int _i_index_; \
TAB_FIND( count, tab, p, _i_index_ ); \
if( _i_index_ >= 0 ) \
{ \
if( (count) > 1 ) \
{ \
memmove( ((void**)(tab) + _i_index_), \
((void**)(tab) + _i_index_+1), \
( (count) - _i_index_ - 1 ) * sizeof( void* ) );\
} \
(count)--; \
if( (count) == 0 ) \
{ \
free( tab ); \
(tab) = NULL; \
} \
} \
}
/* Binary search in an array */
#define BSEARCH( entries, count, elem, zetype, key, answer ) { \
int low = 0, high = count - 1; \
answer = -1; \
while( low <= high ) {\
int mid = (low + high ) / 2; /* Just don't care about 2^30 tables */ \
zetype mid_val = entries[mid] elem;\
if( mid_val < key ) \
low = mid + 1; \
else if ( mid_val > key ) \
high = mid -1; \
else \
{ \
answer = mid; break; \
}\
} \
}
/* Dictionnary handling */
struct dict_entry_t
{
int i_int;
char *psz_string;
uint64_t i_hash;
void *p_data;
};
struct dict_t
{
dict_entry_t *p_entries;
int i_entries;
};
VLC_EXPORT( dict_t *, vlc_DictNew, (void) );
VLC_EXPORT( void, vlc_DictClear, (dict_t * ) );
VLC_EXPORT( void, vlc_DictInsert, (dict_t *, int, const char *, void * ) );
VLC_EXPORT( void*, vlc_DictGet, (dict_t *, int, const char * ) );
VLC_EXPORT( int, vlc_DictLookup, (dict_t *, int, const char * ) );
#include <vlc_arrays.h>
/* MSB (big endian)/LSB (little endian) conversions - network order is always
* MSB, and should be used for both network communications and files. Note that
......
......@@ -3,6 +3,9 @@ import unittest
import native_libvlc_test
class NativeAlgoTestCase( unittest.TestCase ):
def test_arrays( self ):
"""[Algo] Check dynamic arrays"""
native_libvlc_test.arrays_test()
def test_bsearch_direct( self ):
"""[Algo] Check Bsearch with simple types"""
native_libvlc_test.bsearch_direct_test()
......
......@@ -22,6 +22,91 @@
#include "../pyunit.h"
#include <vlc/vlc.h>
/**********************************************************************
* Arrays
*********************************************************************/
TYPEDEF_ARRAY(long,long_array_t);
PyObject *arrays_test( PyObject *self, PyObject *args )
{
mtime_t one, two;
int number = 1000000;
int number2 = 50000; /* For slow with memmove */
printf("\n");
{
int i_items = 0;
int *p_items = NULL;
int i;
one = mdate();
for( i = 0 ; i<number;i++) {
INSERT_ELEM(p_items,i_items, i_items, i+50);
}
two = mdate();
printf( " Std array %i items appended in "I64Fi" µs\n", number,
(two-one) );
for( i = number-1 ; i>=0; i--) {
REMOVE_ELEM( p_items, i_items, i );
}
one = mdate();
printf( " Std array %i items removed in "I64Fi" µs\n", number,
(one-two) );
for( i = 0 ; i<number2;i++) {
int pos = i_items == 0 ? 0 : rand() % i_items;
INSERT_ELEM(p_items, i_items, pos, pos + 50);
}
two = mdate();
printf( " Std array %i items inserted in "I64Fi" µs\n", number2,
(two-one) );
}
{
DECL_ARRAY(int) int_array;
int i = 0;
ARRAY_INIT(int_array);
ASSERT(int_array.i_size == 0, "" );
ASSERT(int_array.i_alloc == 0, "" );
ASSERT(int_array.p_elems == 0, "" );
ARRAY_APPEND(int_array, 42 );
ASSERT(int_array.i_size == 1, "" );
ASSERT(int_array.i_alloc > 1, "" );
ASSERT(int_array.p_elems[0] == 42, "" );
ARRAY_REMOVE(int_array,0);
ASSERT(int_array.i_size == 0, "" );
one = mdate();
for( i = 0 ; i<number;i++) {
ARRAY_APPEND(int_array, i+50);
}
two = mdate();
printf( " New array %i items appended in "I64Fi" µs\n", number,
(two-one) );
ASSERT(int_array.p_elems[1242] == 1292 , "");
for( i = number-1 ; i>=0; i--) {
ARRAY_REMOVE(int_array,i);
}
one = mdate();
printf( " New array %i items removed in "I64Fi" µs\n", number,
(one-two) );
/* Now random inserts */
for( i = 0 ; i<number2;i++) {
int pos = int_array.i_size == 0 ? 0 : rand() % int_array.i_size;
ARRAY_INSERT(int_array, pos+50, pos);
}
two = mdate();
printf( " New array %i items inserted in "I64Fi" µs\n", number2,
(two-one) );
}
{
long_array_t larray;
ARRAY_INIT(larray);
}
Py_INCREF( Py_None);
return Py_None;
}
/**********************************************************************
* Binary search
*********************************************************************/
......@@ -66,7 +151,7 @@ PyObject *bsearch_member_test( PyObject *self, PyObject *args )
{
struct bsearch_tester array[] =
{
{ 0, 12 }, { 1, 22 } , { 2, 33 } , { 3, 68 } , { 4, 56 }
{ 0, 12 }, { 1, 22 } , { 2, 33 } , { 3, 68 } , { 4, 56 }
};
#define MEMBCHECK( checked, expected ) { \
int answer = -1; \
......
......@@ -20,6 +20,7 @@ static PyMethodDef native_libvlc_test_methods[] = {
DEF_METHOD( chains_test, "Test building of chains" )
DEF_METHOD( gui_chains_test, "Test interactions between chains and GUI" )
DEF_METHOD( psz_chains_test, "Test building of chain strings" )
DEF_METHOD( arrays_test, "Test arrays")
DEF_METHOD( bsearch_direct_test, "Test Bsearch without structure" )
DEF_METHOD( bsearch_member_test, "Test Bsearch with structure" )
DEF_METHOD( dict_test, "Test dictionnaries" )
......
......@@ -19,6 +19,7 @@ PyObject *gui_chains_test( PyObject *self, PyObject *args );
PyObject *psz_chains_test( PyObject *self, PyObject *args );
/* Algo */
PyObject *arrays_test( PyObject *self, PyObject *args );
PyObject *bsearch_direct_test( PyObject *self, PyObject *args );
PyObject *bsearch_member_test( PyObject *self, PyObject *args );
PyObject *dict_test( PyObject *self, PyObject *args );
......
......@@ -12,7 +12,11 @@ export LD_LIBRARY_PATH=src/.libs/
# Always dump core
ulimit -c unlimited
python test/test.py -v 2>&1|perl -e \
if [ "x$1" = "xdebug" ]
then
gdb python "test/test.sh"
else
python test/test.py -v 2>&1|perl -e \
'$bold = "\033[1m";
$grey = "\033[37m";
$green = "\033[32m";
......@@ -42,4 +46,4 @@ while(<STDIN>)
print $grey.$line."\n";
}
}'
fi
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