support/win32/mmap.c

#include <windows.h>
#include "sys/mman.h"

void * mmap_readonly_win32( const char* name, long* map_handle_ptr, long* map_file_ptr )
{
    void * mapped_ptr = NULL;
#if defined(__CEGCC__)

    wchar_t filename[MultiByteToWideChar(CP_ACP, MB_PRECOMPOSED, name, strlen(name), 0, 0)];
    MultiByteToWideChar(CP_ACP, MB_PRECOMPOSED, name, strlen(name), filename, wcslen(filename)) ;

    HANDLE hFile = CreateFile (filename, GENERIC_READ, FILE_SHARE_READ,0,OPEN_EXISTING,FILE_ATTRIBUTE_NORMAL,0);
#else
    HANDLE hFile = CreateFile (name, GENERIC_READ, FILE_SHARE_READ,0,OPEN_EXISTING,FILE_ATTRIBUTE_NORMAL,0);
#endif
    *map_file_ptr = (long)hFile;
    *map_handle_ptr = 0;

    if ( hFile != HFILE_ERROR )
    {
        HANDLE hMapping = CreateFileMapping( (HANDLE)hFile, NULL, PAGE_READONLY, 0, 0, NULL);
        mapped_ptr = MapViewOfFile(hMapping, FILE_MAP_READ, 0 , 0, 0 );
        *map_handle_ptr = (long)hMapping;
    }

    return mapped_ptr;
}

void mmap_unmap_win32( void* mem_ptr, long map_handle, long map_file )
{
    if ( mem_ptr != NULL )
    {
        UnmapViewOfFile( mem_ptr );
    }
    if ( map_handle != 0)
    {
        CloseHandle( (HANDLE)map_handle );
    }
    if ( map_file != 0  )
    {
        CloseHandle( (HANDLE)map_file );
    }
}
1	#include <windows.h>
2	#include "sys/mman.h"
3
4	void * mmap_readonly_win32( const char* name, long* map_handle_ptr, long* map_file_ptr )
5	{
6	void * mapped_ptr = NULL;
7	#if defined(__CEGCC__)
8
9	wchar_t filename[MultiByteToWideChar(CP_ACP, MB_PRECOMPOSED, name, strlen(name), 0, 0)];
10	MultiByteToWideChar(CP_ACP, MB_PRECOMPOSED, name, strlen(name), filename, wcslen(filename)) ;
11
12	HANDLE hFile = CreateFile (filename, GENERIC_READ, FILE_SHARE_READ,0,OPEN_EXISTING,FILE_ATTRIBUTE_NORMAL,0);
13	#else
14	HANDLE hFile = CreateFile (name, GENERIC_READ, FILE_SHARE_READ,0,OPEN_EXISTING,FILE_ATTRIBUTE_NORMAL,0);
15	#endif
16	*map_file_ptr = (long)hFile;
17	*map_handle_ptr = 0;
18
19	if ( hFile != HFILE_ERROR )
20	{
21	HANDLE hMapping = CreateFileMapping( (HANDLE)hFile, NULL, PAGE_READONLY, 0, 0, NULL);
22	mapped_ptr = MapViewOfFile(hMapping, FILE_MAP_READ, 0 , 0, 0 );
23	*map_handle_ptr = (long)hMapping;
24	}
25
26	return mapped_ptr;
27	}
28
29	void mmap_unmap_win32( void* mem_ptr, long map_handle, long map_file )
30	{
31	if ( mem_ptr != NULL )
32	{
33	UnmapViewOfFile( mem_ptr );
34	}
35	if ( map_handle != 0)
36	{
37	CloseHandle( (HANDLE)map_handle );
38	}
39	if ( map_file != 0 )
40	{
41	CloseHandle( (HANDLE)map_file );
42	}
43	}