mirror of
https://gitlab.gnome.org/GNOME/glib.git
synced 2024-12-26 07:26:15 +01:00
b37e032581
1999-02-10 Sebastian Wilhelmi <wilhelmi@ira.uka.de> * glib.h: s/G_LOCK_DECLARE/G_LOCK_DEFINE/ throuhout glib. Added G_LOCK_EXTERN macro to declare a lock externally.
483 lines
10 KiB
C
483 lines
10 KiB
C
/* GLIB - Library of useful routines for C programming
|
|
* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Library General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2 of the License, or (at your option) any later version.
|
|
*
|
|
* This library 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
|
|
* Library General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Library General Public
|
|
* License along with this library; if not, write to the
|
|
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
|
* Boston, MA 02111-1307, USA.
|
|
*/
|
|
|
|
/*
|
|
* MT safe
|
|
*/
|
|
|
|
#include <string.h>
|
|
#include "glib.h"
|
|
|
|
|
|
#define MIN_ARRAY_SIZE 16
|
|
|
|
|
|
typedef struct _GRealArray GRealArray;
|
|
|
|
struct _GRealArray
|
|
{
|
|
guint8 *data;
|
|
guint len;
|
|
guint alloc;
|
|
guint elt_size;
|
|
guint zero_terminated : 1;
|
|
guint clear : 1;
|
|
};
|
|
|
|
|
|
static gint g_nearest_pow (gint num);
|
|
static void g_array_maybe_expand (GRealArray *array,
|
|
gint len);
|
|
|
|
static GMemChunk *array_mem_chunk = NULL;
|
|
G_LOCK_DEFINE_STATIC (array_mem_chunk);
|
|
|
|
GArray*
|
|
g_array_new (gboolean zero_terminated,
|
|
gboolean clear,
|
|
guint elt_size)
|
|
{
|
|
GRealArray *array;
|
|
|
|
G_LOCK (array_mem_chunk);
|
|
if (!array_mem_chunk)
|
|
array_mem_chunk = g_mem_chunk_new ("array mem chunk",
|
|
sizeof (GRealArray),
|
|
1024, G_ALLOC_AND_FREE);
|
|
|
|
array = g_chunk_new (GRealArray, array_mem_chunk);
|
|
G_UNLOCK (array_mem_chunk);
|
|
|
|
array->data = NULL;
|
|
array->len = 0;
|
|
array->alloc = 0;
|
|
array->zero_terminated = (zero_terminated ? 1 : 0);
|
|
array->clear = (clear ? 1 : 0);
|
|
array->elt_size = elt_size;
|
|
|
|
return (GArray*) array;
|
|
}
|
|
|
|
void
|
|
g_array_free (GArray *array,
|
|
gboolean free_segment)
|
|
{
|
|
if (free_segment)
|
|
g_free (array->data);
|
|
|
|
G_LOCK (array_mem_chunk);
|
|
g_mem_chunk_free (array_mem_chunk, array);
|
|
G_UNLOCK (array_mem_chunk);
|
|
}
|
|
|
|
GArray*
|
|
g_array_append_vals (GArray *farray,
|
|
gconstpointer data,
|
|
guint len)
|
|
{
|
|
GRealArray *array = (GRealArray*) farray;
|
|
|
|
g_array_maybe_expand (array, len);
|
|
|
|
memcpy (array->data + array->elt_size * array->len, data, array->elt_size * len);
|
|
|
|
array->len += len;
|
|
|
|
return farray;
|
|
}
|
|
|
|
GArray*
|
|
g_array_prepend_vals (GArray *farray,
|
|
gconstpointer data,
|
|
guint len)
|
|
{
|
|
GRealArray *array = (GRealArray*) farray;
|
|
|
|
g_array_maybe_expand (array, len);
|
|
|
|
g_memmove (array->data + array->elt_size * len, array->data, array->elt_size * array->len);
|
|
|
|
memcpy (array->data, data, len * array->elt_size);
|
|
|
|
array->len += len;
|
|
|
|
return farray;
|
|
}
|
|
|
|
GArray*
|
|
g_array_insert_vals (GArray *farray,
|
|
guint index,
|
|
gconstpointer data,
|
|
guint len)
|
|
{
|
|
GRealArray *array = (GRealArray*) farray;
|
|
|
|
g_array_maybe_expand (array, len);
|
|
|
|
g_memmove (array->data + array->elt_size * (len + index),
|
|
array->data + array->elt_size * index,
|
|
array->elt_size * (array->len - index));
|
|
|
|
memcpy (array->data + array->elt_size * index, data, len * array->elt_size);
|
|
|
|
array->len += len;
|
|
|
|
return farray;
|
|
}
|
|
|
|
GArray*
|
|
g_array_set_size (GArray *farray,
|
|
guint length)
|
|
{
|
|
GRealArray *array = (GRealArray*) farray;
|
|
|
|
if (array->len < length)
|
|
g_array_maybe_expand (array, length - array->len);
|
|
|
|
array->len = length;
|
|
|
|
return farray;
|
|
}
|
|
|
|
GArray*
|
|
g_array_remove_index (GArray* farray,
|
|
guint index)
|
|
{
|
|
GRealArray* array = (GRealArray*) farray;
|
|
|
|
g_return_val_if_fail (array, NULL);
|
|
|
|
g_return_val_if_fail (index >= 0 && index < array->len, NULL);
|
|
|
|
if (index != array->len - 1)
|
|
g_memmove (array->data + array->elt_size * index,
|
|
array->data + array->elt_size * (index + 1),
|
|
array->elt_size * (array->len - index - 1));
|
|
|
|
if (array->zero_terminated)
|
|
memset (array->data + array->elt_size * (array->len - 1), 0,
|
|
array->elt_size);
|
|
|
|
array->len -= 1;
|
|
|
|
return farray;
|
|
}
|
|
|
|
GArray*
|
|
g_array_remove_index_fast (GArray* farray,
|
|
guint index)
|
|
{
|
|
GRealArray* array = (GRealArray*) farray;
|
|
|
|
g_return_val_if_fail (array, NULL);
|
|
|
|
g_return_val_if_fail (index >= 0 && index < array->len, NULL);
|
|
|
|
if (index != array->len - 1)
|
|
g_memmove (array->data + array->elt_size * index,
|
|
array->data + array->elt_size * (array->len - 1),
|
|
array->elt_size);
|
|
|
|
if (array->zero_terminated)
|
|
memset (array->data + array->elt_size * (array->len - 1), 0,
|
|
array->elt_size);
|
|
|
|
array->len -= 1;
|
|
|
|
return farray;
|
|
}
|
|
|
|
static gint
|
|
g_nearest_pow (gint num)
|
|
{
|
|
gint n = 1;
|
|
|
|
while (n < num)
|
|
n <<= 1;
|
|
|
|
return n;
|
|
}
|
|
|
|
static void
|
|
g_array_maybe_expand (GRealArray *array,
|
|
gint len)
|
|
{
|
|
guint want_alloc = (array->len + len + array->zero_terminated) * array->elt_size;
|
|
|
|
if (want_alloc > array->alloc)
|
|
{
|
|
guint old_alloc = array->alloc;
|
|
|
|
array->alloc = g_nearest_pow (want_alloc);
|
|
array->alloc = MAX (array->alloc, MIN_ARRAY_SIZE);
|
|
|
|
array->data = g_realloc (array->data, array->alloc);
|
|
|
|
if (array->clear || array->zero_terminated)
|
|
memset (array->data + old_alloc, 0, array->alloc - old_alloc);
|
|
}
|
|
}
|
|
|
|
/* Pointer Array
|
|
*/
|
|
|
|
typedef struct _GRealPtrArray GRealPtrArray;
|
|
|
|
struct _GRealPtrArray
|
|
{
|
|
gpointer *pdata;
|
|
guint len;
|
|
guint alloc;
|
|
};
|
|
|
|
static void g_ptr_array_maybe_expand (GRealPtrArray *array,
|
|
gint len);
|
|
|
|
static GMemChunk *ptr_array_mem_chunk = NULL;
|
|
G_LOCK_DEFINE_STATIC (ptr_array_mem_chunk);
|
|
|
|
|
|
GPtrArray*
|
|
g_ptr_array_new (void)
|
|
{
|
|
GRealPtrArray *array;
|
|
|
|
G_LOCK (ptr_array_mem_chunk);
|
|
if (!ptr_array_mem_chunk)
|
|
ptr_array_mem_chunk = g_mem_chunk_new ("array mem chunk",
|
|
sizeof (GRealPtrArray),
|
|
1024, G_ALLOC_AND_FREE);
|
|
|
|
array = g_chunk_new (GRealPtrArray, ptr_array_mem_chunk);
|
|
G_UNLOCK (ptr_array_mem_chunk);
|
|
|
|
array->pdata = NULL;
|
|
array->len = 0;
|
|
array->alloc = 0;
|
|
|
|
return (GPtrArray*) array;
|
|
}
|
|
|
|
void
|
|
g_ptr_array_free (GPtrArray *array,
|
|
gboolean free_segment)
|
|
{
|
|
g_return_if_fail (array);
|
|
|
|
if (free_segment)
|
|
g_free (array->pdata);
|
|
|
|
G_LOCK (ptr_array_mem_chunk);
|
|
g_mem_chunk_free (ptr_array_mem_chunk, array);
|
|
G_UNLOCK (ptr_array_mem_chunk);
|
|
}
|
|
|
|
static void
|
|
g_ptr_array_maybe_expand (GRealPtrArray *array,
|
|
gint len)
|
|
{
|
|
guint old_alloc;
|
|
|
|
if ((array->len + len) > array->alloc)
|
|
{
|
|
old_alloc = array->alloc;
|
|
|
|
array->alloc = g_nearest_pow (array->len + len);
|
|
array->alloc = MAX (array->alloc, MIN_ARRAY_SIZE);
|
|
if (array->pdata)
|
|
array->pdata = g_realloc (array->pdata, sizeof(gpointer) * array->alloc);
|
|
else
|
|
array->pdata = g_new0 (gpointer, array->alloc);
|
|
|
|
memset (array->pdata + old_alloc, 0, array->alloc - old_alloc);
|
|
}
|
|
}
|
|
|
|
void
|
|
g_ptr_array_set_size (GPtrArray *farray,
|
|
gint length)
|
|
{
|
|
GRealPtrArray* array = (GRealPtrArray*) farray;
|
|
|
|
g_return_if_fail (array);
|
|
|
|
if (length > array->len)
|
|
g_ptr_array_maybe_expand (array, (length - array->len));
|
|
|
|
array->len = length;
|
|
}
|
|
|
|
gpointer
|
|
g_ptr_array_remove_index (GPtrArray* farray,
|
|
guint index)
|
|
{
|
|
GRealPtrArray* array = (GRealPtrArray*) farray;
|
|
gpointer result;
|
|
|
|
g_return_val_if_fail (array, NULL);
|
|
|
|
g_return_val_if_fail (index >= 0 && index < array->len, NULL);
|
|
|
|
result = array->pdata[index];
|
|
|
|
if (index != array->len - 1)
|
|
g_memmove (array->pdata + index, array->pdata + index + 1,
|
|
sizeof (gpointer) * (array->len - index - 1));
|
|
|
|
array->pdata[array->len - 1] = NULL;
|
|
|
|
array->len -= 1;
|
|
|
|
return result;
|
|
}
|
|
|
|
gpointer
|
|
g_ptr_array_remove_index_fast (GPtrArray* farray,
|
|
guint index)
|
|
{
|
|
GRealPtrArray* array = (GRealPtrArray*) farray;
|
|
gpointer result;
|
|
|
|
g_return_val_if_fail (array, NULL);
|
|
|
|
g_return_val_if_fail (index >= 0 && index < array->len, NULL);
|
|
|
|
result = array->pdata[index];
|
|
|
|
if (index != array->len - 1)
|
|
array->pdata[index] = array->pdata[array->len - 1];
|
|
|
|
array->pdata[array->len - 1] = NULL;
|
|
|
|
array->len -= 1;
|
|
|
|
return result;
|
|
}
|
|
|
|
gboolean
|
|
g_ptr_array_remove (GPtrArray* farray,
|
|
gpointer data)
|
|
{
|
|
GRealPtrArray* array = (GRealPtrArray*) farray;
|
|
int i;
|
|
|
|
g_return_val_if_fail (array, FALSE);
|
|
|
|
for (i = 0; i < array->len; i += 1)
|
|
{
|
|
if (array->pdata[i] == data)
|
|
{
|
|
g_ptr_array_remove_index (farray, i);
|
|
return TRUE;
|
|
}
|
|
}
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
gboolean
|
|
g_ptr_array_remove_fast (GPtrArray* farray,
|
|
gpointer data)
|
|
{
|
|
GRealPtrArray* array = (GRealPtrArray*) farray;
|
|
int i;
|
|
|
|
g_return_val_if_fail (array, FALSE);
|
|
|
|
for (i = 0; i < array->len; i += 1)
|
|
{
|
|
if (array->pdata[i] == data)
|
|
{
|
|
g_ptr_array_remove_index_fast (farray, i);
|
|
return TRUE;
|
|
}
|
|
}
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
void
|
|
g_ptr_array_add (GPtrArray* farray,
|
|
gpointer data)
|
|
{
|
|
GRealPtrArray* array = (GRealPtrArray*) farray;
|
|
|
|
g_return_if_fail (array);
|
|
|
|
g_ptr_array_maybe_expand (array, 1);
|
|
|
|
array->pdata[array->len++] = data;
|
|
}
|
|
|
|
/* Byte arrays
|
|
*/
|
|
|
|
GByteArray* g_byte_array_new (void)
|
|
{
|
|
return (GByteArray*) g_array_new (FALSE, FALSE, 1);
|
|
}
|
|
|
|
void g_byte_array_free (GByteArray *array,
|
|
gboolean free_segment)
|
|
{
|
|
g_array_free ((GArray*) array, free_segment);
|
|
}
|
|
|
|
GByteArray* g_byte_array_append (GByteArray *array,
|
|
const guint8 *data,
|
|
guint len)
|
|
{
|
|
g_array_append_vals ((GArray*) array, (guint8*)data, len);
|
|
|
|
return array;
|
|
}
|
|
|
|
GByteArray* g_byte_array_prepend (GByteArray *array,
|
|
const guint8 *data,
|
|
guint len)
|
|
{
|
|
g_array_prepend_vals ((GArray*) array, (guint8*)data, len);
|
|
|
|
return array;
|
|
}
|
|
|
|
GByteArray* g_byte_array_set_size (GByteArray *array,
|
|
guint length)
|
|
{
|
|
g_array_set_size ((GArray*) array, length);
|
|
|
|
return array;
|
|
}
|
|
|
|
GByteArray* g_byte_array_remove_index (GByteArray *array,
|
|
guint index)
|
|
{
|
|
g_array_remove_index((GArray*) array, index);
|
|
|
|
return array;
|
|
}
|
|
|
|
GByteArray* g_byte_array_remove_index_fast (GByteArray *array,
|
|
guint index)
|
|
{
|
|
g_array_remove_index_fast((GArray*) array, index);
|
|
|
|
return array;
|
|
}
|