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/** \file halloc_util.c
A hierarchical memory allocation system. Works just like talloc
used in Samba, except that an arbitrary block allocated with
malloc() can be registered to be freed by halloc_free.
*/
#include "config.h"
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include "fallback.h"
#include "util.h"
#include "common.h"
#include "halloc.h"
void *global_context=0;
void halloc_util_init()
{
global_context = halloc( 0, 0 );
}
void halloc_util_destroy()
{
halloc_free( global_context );
}
array_list_t *al_halloc( void *context )
{
array_list_t *res = halloc( context, sizeof( array_list_t ) );
if( !res )
DIE_MEM();
al_init( res );
halloc_register_function( context?context:res, (void (*)(void *)) &al_destroy, res );
return res;
}
string_buffer_t *sb_halloc( void *context )
{
string_buffer_t *res = halloc( context, sizeof( string_buffer_t ) );
if( !res )
DIE_MEM();
sb_init( res );
halloc_register_function( context?context:res, (void (*)(void *)) &sb_destroy, res );
return res;
}
/**
A function that takes a single parameter, which is a function pointer, and calls it.
*/
static void halloc_passthrough( void *f )
{
void (*func)() = (void (*)() )f;
func();
}
void halloc_register_function_void( void *context, void (*func)() )
{
halloc_register_function( context, &halloc_passthrough, (void *)func );
}
void *halloc_register( void *context, void *data )
{
if( !data )
return 0;
halloc_register_function( context, &free, data );
return data;
}
wchar_t *halloc_wcsdup( void *context, const wchar_t *in )
{
size_t len=wcslen(in);
wchar_t *out = halloc( context, sizeof( wchar_t)*(len+1));
if( out == 0 )
{
DIE_MEM();
}
memcpy( out, in, sizeof( wchar_t)*(len+1));
return out;
}
wchar_t *halloc_wcsndup( void * context, const wchar_t *in, int c )
{
wchar_t *res = halloc( context, sizeof(wchar_t)*(c+1) );
if( res == 0 )
{
DIE_MEM();
}
wcslcpy( res, in, c+1 );
res[c] = L'\0';
return res;
}