mirror of
https://github.com/transmission/transmission
synced 2024-12-25 17:17:31 +00:00
830 lines
20 KiB
C
830 lines
20 KiB
C
/*
|
|
* This file Copyright (C) Mnemosyne LLC
|
|
*
|
|
* This file is licensed by the GPL version 2. Works owned by the
|
|
* Transmission project are granted a special exemption to clause 2(b)
|
|
* so that the bulk of its code can remain under the MIT license.
|
|
* This exemption does not extend to derived works not owned by
|
|
* the Transmission project.
|
|
*
|
|
* $Id$
|
|
*/
|
|
|
|
#ifdef WIN32
|
|
#include <w32api.h>
|
|
#define WINVER WindowsXP
|
|
#include <windows.h>
|
|
#include <shlobj.h> /* for CSIDL_APPDATA, CSIDL_MYDOCUMENTS */
|
|
#else
|
|
#ifdef SYS_DARWIN
|
|
#include <CoreFoundation/CoreFoundation.h>
|
|
#endif
|
|
#ifdef __HAIKU__
|
|
#include <FindDirectory.h>
|
|
#endif
|
|
#define _XOPEN_SOURCE 600 /* needed for recursive locks. */
|
|
#ifndef __USE_UNIX98
|
|
#define __USE_UNIX98 /* some older Linuxes need it spelt out for them */
|
|
#endif
|
|
#include <pthread.h>
|
|
#endif
|
|
|
|
#include <assert.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
|
|
#ifdef SYS_DARWIN
|
|
#define HAVE_SYS_STATVFS_H
|
|
#define HAVE_STATVFS
|
|
#endif
|
|
|
|
#include <sys/stat.h>
|
|
#include <sys/types.h>
|
|
#ifdef HAVE_SYS_STATVFS_H
|
|
#include <sys/statvfs.h>
|
|
#endif
|
|
#ifdef WIN32
|
|
#include <libgen.h>
|
|
#endif
|
|
#include <dirent.h>
|
|
#include <fcntl.h>
|
|
#include <unistd.h> /* getuid getpid close */
|
|
|
|
#include "transmission.h"
|
|
#include "session.h"
|
|
#include "list.h"
|
|
#include "platform.h"
|
|
#include "utils.h"
|
|
|
|
/***
|
|
**** THREADS
|
|
***/
|
|
|
|
#ifdef WIN32
|
|
typedef DWORD tr_thread_id;
|
|
#else
|
|
typedef pthread_t tr_thread_id;
|
|
#endif
|
|
|
|
static tr_thread_id
|
|
tr_getCurrentThread( void )
|
|
{
|
|
#ifdef WIN32
|
|
return GetCurrentThreadId( );
|
|
#else
|
|
return pthread_self( );
|
|
#endif
|
|
}
|
|
|
|
static bool
|
|
tr_areThreadsEqual( tr_thread_id a, tr_thread_id b )
|
|
{
|
|
#ifdef WIN32
|
|
return a == b;
|
|
#else
|
|
return pthread_equal( a, b ) != 0;
|
|
#endif
|
|
}
|
|
|
|
/** @brief portability wrapper around OS-dependent threads */
|
|
struct tr_thread
|
|
{
|
|
void ( * func )( void * );
|
|
void * arg;
|
|
tr_thread_id thread;
|
|
#ifdef WIN32
|
|
HANDLE thread_handle;
|
|
#endif
|
|
};
|
|
|
|
bool
|
|
tr_amInThread( const tr_thread * t )
|
|
{
|
|
return tr_areThreadsEqual( tr_getCurrentThread( ), t->thread );
|
|
}
|
|
|
|
#ifdef WIN32
|
|
#define ThreadFuncReturnType unsigned WINAPI
|
|
#else
|
|
#define ThreadFuncReturnType void
|
|
#endif
|
|
|
|
static ThreadFuncReturnType
|
|
ThreadFunc( void * _t )
|
|
{
|
|
tr_thread * t = _t;
|
|
|
|
t->func( t->arg );
|
|
|
|
tr_free( t );
|
|
#ifdef WIN32
|
|
_endthreadex( 0 );
|
|
return 0;
|
|
#endif
|
|
}
|
|
|
|
tr_thread *
|
|
tr_threadNew( void ( *func )(void *),
|
|
void * arg )
|
|
{
|
|
tr_thread * t = tr_new0( tr_thread, 1 );
|
|
|
|
t->func = func;
|
|
t->arg = arg;
|
|
|
|
#ifdef WIN32
|
|
{
|
|
unsigned int id;
|
|
t->thread_handle =
|
|
(HANDLE) _beginthreadex( NULL, 0, &ThreadFunc, t, 0,
|
|
&id );
|
|
t->thread = (DWORD) id;
|
|
}
|
|
#else
|
|
pthread_create( &t->thread, NULL, (void*(*)(void*))ThreadFunc, t );
|
|
pthread_detach( t->thread );
|
|
|
|
#endif
|
|
|
|
return t;
|
|
}
|
|
|
|
/***
|
|
**** LOCKS
|
|
***/
|
|
|
|
/** @brief portability wrapper around OS-dependent thread mutexes */
|
|
struct tr_lock
|
|
{
|
|
int depth;
|
|
#ifdef WIN32
|
|
CRITICAL_SECTION lock;
|
|
DWORD lockThread;
|
|
#else
|
|
pthread_mutex_t lock;
|
|
pthread_t lockThread;
|
|
#endif
|
|
};
|
|
|
|
tr_lock*
|
|
tr_lockNew( void )
|
|
{
|
|
tr_lock * l = tr_new0( tr_lock, 1 );
|
|
|
|
#ifdef WIN32
|
|
InitializeCriticalSection( &l->lock ); /* supports recursion */
|
|
#else
|
|
pthread_mutexattr_t attr;
|
|
pthread_mutexattr_init( &attr );
|
|
pthread_mutexattr_settype( &attr, PTHREAD_MUTEX_RECURSIVE );
|
|
pthread_mutex_init( &l->lock, &attr );
|
|
#endif
|
|
|
|
return l;
|
|
}
|
|
|
|
void
|
|
tr_lockFree( tr_lock * l )
|
|
{
|
|
#ifdef WIN32
|
|
DeleteCriticalSection( &l->lock );
|
|
#else
|
|
pthread_mutex_destroy( &l->lock );
|
|
#endif
|
|
tr_free( l );
|
|
}
|
|
|
|
void
|
|
tr_lockLock( tr_lock * l )
|
|
{
|
|
#ifdef WIN32
|
|
EnterCriticalSection( &l->lock );
|
|
#else
|
|
pthread_mutex_lock( &l->lock );
|
|
#endif
|
|
assert( l->depth >= 0 );
|
|
if( l->depth )
|
|
assert( tr_areThreadsEqual( l->lockThread, tr_getCurrentThread( ) ) );
|
|
l->lockThread = tr_getCurrentThread( );
|
|
++l->depth;
|
|
}
|
|
|
|
int
|
|
tr_lockHave( const tr_lock * l )
|
|
{
|
|
return ( l->depth > 0 )
|
|
&& ( tr_areThreadsEqual( l->lockThread, tr_getCurrentThread( ) ) );
|
|
}
|
|
|
|
void
|
|
tr_lockUnlock( tr_lock * l )
|
|
{
|
|
assert( l->depth > 0 );
|
|
assert( tr_areThreadsEqual( l->lockThread, tr_getCurrentThread( ) ) );
|
|
|
|
--l->depth;
|
|
assert( l->depth >= 0 );
|
|
#ifdef WIN32
|
|
LeaveCriticalSection( &l->lock );
|
|
#else
|
|
pthread_mutex_unlock( &l->lock );
|
|
#endif
|
|
}
|
|
|
|
/***
|
|
**** PATHS
|
|
***/
|
|
|
|
#ifndef WIN32
|
|
#include <pwd.h>
|
|
#endif
|
|
|
|
static const char *
|
|
getHomeDir( void )
|
|
{
|
|
static char * home = NULL;
|
|
|
|
if( !home )
|
|
{
|
|
home = tr_strdup( getenv( "HOME" ) );
|
|
|
|
if( !home )
|
|
{
|
|
#ifdef WIN32
|
|
char appdata[MAX_PATH]; /* SHGetFolderPath() requires MAX_PATH */
|
|
*appdata = '\0';
|
|
SHGetFolderPath( NULL, CSIDL_PERSONAL, NULL, 0, appdata );
|
|
home = tr_strdup( appdata );
|
|
#else
|
|
struct passwd * pw = getpwuid( getuid( ) );
|
|
if( pw )
|
|
home = tr_strdup( pw->pw_dir );
|
|
endpwent( );
|
|
#endif
|
|
}
|
|
|
|
if( !home )
|
|
home = tr_strdup( "" );
|
|
}
|
|
|
|
return home;
|
|
}
|
|
|
|
static const char *
|
|
getOldConfigDir( void )
|
|
{
|
|
static char * path = NULL;
|
|
|
|
if( !path )
|
|
{
|
|
#ifdef SYS_DARWIN
|
|
path = tr_buildPath( getHomeDir( ), "Library",
|
|
"Application Support",
|
|
"Transmission", NULL );
|
|
#elif defined( WIN32 )
|
|
char appdata[MAX_PATH]; /* SHGetFolderPath() requires MAX_PATH */
|
|
SHGetFolderPath( NULL, CSIDL_APPDATA, NULL, 0, appdata );
|
|
path = tr_buildPath( appdata, "Transmission", NULL );
|
|
#elif defined( __HAIKU__ )
|
|
char buf[TR_PATH_MAX];
|
|
find_directory( B_USER_SETTINGS_DIRECTORY, -1, true, buf, sizeof(buf) );
|
|
path = tr_buildPath( buf, "Transmission", NULL );
|
|
#else
|
|
path = tr_buildPath( getHomeDir( ), ".transmission", NULL );
|
|
#endif
|
|
}
|
|
|
|
return path;
|
|
}
|
|
|
|
#if defined(SYS_DARWIN) || defined(WIN32)
|
|
#define RESUME_SUBDIR "Resume"
|
|
#define TORRENT_SUBDIR "Torrents"
|
|
#else
|
|
#define RESUME_SUBDIR "resume"
|
|
#define TORRENT_SUBDIR "torrents"
|
|
#endif
|
|
|
|
static const char *
|
|
getOldTorrentsDir( void )
|
|
{
|
|
static char * path = NULL;
|
|
|
|
if( !path )
|
|
path = tr_buildPath( getOldConfigDir( ), TORRENT_SUBDIR, NULL );
|
|
|
|
return path;
|
|
}
|
|
|
|
static const char *
|
|
getOldCacheDir( void )
|
|
{
|
|
static char * path = NULL;
|
|
|
|
if( !path )
|
|
{
|
|
#if defined( WIN32 )
|
|
path = tr_buildPath( getOldConfigDir( ), "Cache", NULL );
|
|
#elif defined( SYS_DARWIN )
|
|
path = tr_buildPath( getHomeDir( ), "Library", "Caches", "Transmission", NULL );
|
|
#else
|
|
path = tr_buildPath( getOldConfigDir( ), "cache", NULL );
|
|
#endif
|
|
}
|
|
|
|
return path;
|
|
}
|
|
|
|
static void
|
|
moveFiles( const char * oldDir,
|
|
const char * newDir )
|
|
{
|
|
if( oldDir && newDir && strcmp( oldDir, newDir ) )
|
|
{
|
|
DIR * dirh = opendir( oldDir );
|
|
if( dirh )
|
|
{
|
|
int count = 0;
|
|
struct dirent * dirp;
|
|
while( ( dirp = readdir( dirh ) ) )
|
|
{
|
|
const char * name = dirp->d_name;
|
|
if( name && strcmp( name, "." ) && strcmp( name, ".." ) )
|
|
{
|
|
char * o = tr_buildPath( oldDir, name, NULL );
|
|
char * n = tr_buildPath( newDir, name, NULL );
|
|
rename( o, n );
|
|
++count;
|
|
tr_free( n );
|
|
tr_free( o );
|
|
}
|
|
}
|
|
|
|
if( count )
|
|
tr_inf( _( "Migrated %1$d files from \"%2$s\" to \"%3$s\"" ),
|
|
count, oldDir, newDir );
|
|
closedir( dirh );
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* This function is for transmission-gtk users to migrate the config files
|
|
* from $HOME/.transmission/ (where they were kept before Transmission 1.30)
|
|
* to $HOME/.config/$appname as per the XDG directory spec.
|
|
*/
|
|
static void
|
|
migrateFiles( const tr_session * session )
|
|
{
|
|
static int migrated = false;
|
|
const bool should_migrate = strstr( getOldConfigDir(), ".transmission" ) != NULL;
|
|
|
|
if( !migrated && should_migrate )
|
|
{
|
|
const char * oldDir;
|
|
const char * newDir;
|
|
migrated = true;
|
|
|
|
oldDir = getOldTorrentsDir( );
|
|
newDir = tr_getTorrentDir( session );
|
|
moveFiles( oldDir, newDir );
|
|
|
|
oldDir = getOldCacheDir( );
|
|
newDir = tr_getResumeDir( session );
|
|
moveFiles( oldDir, newDir );
|
|
}
|
|
}
|
|
|
|
void
|
|
tr_setConfigDir( tr_session * session, const char * configDir )
|
|
{
|
|
char * path;
|
|
|
|
session->configDir = tr_strdup( configDir );
|
|
|
|
path = tr_buildPath( configDir, RESUME_SUBDIR, NULL );
|
|
tr_mkdirp( path, 0777 );
|
|
session->resumeDir = path;
|
|
|
|
path = tr_buildPath( configDir, TORRENT_SUBDIR, NULL );
|
|
tr_mkdirp( path, 0777 );
|
|
session->torrentDir = path;
|
|
|
|
migrateFiles( session );
|
|
}
|
|
|
|
const char *
|
|
tr_sessionGetConfigDir( const tr_session * session )
|
|
{
|
|
return session->configDir;
|
|
}
|
|
|
|
const char *
|
|
tr_getTorrentDir( const tr_session * session )
|
|
{
|
|
return session->torrentDir;
|
|
}
|
|
|
|
const char *
|
|
tr_getResumeDir( const tr_session * session )
|
|
{
|
|
return session->resumeDir;
|
|
}
|
|
|
|
const char*
|
|
tr_getDefaultConfigDir( const char * appname )
|
|
{
|
|
static char * s = NULL;
|
|
|
|
if( !appname || !*appname )
|
|
appname = "Transmission";
|
|
|
|
if( !s )
|
|
{
|
|
if( ( s = getenv( "TRANSMISSION_HOME" ) ) )
|
|
{
|
|
s = tr_strdup( s );
|
|
}
|
|
else
|
|
{
|
|
#ifdef SYS_DARWIN
|
|
s = tr_buildPath( getHomeDir( ), "Library", "Application Support",
|
|
appname, NULL );
|
|
#elif defined( WIN32 )
|
|
char appdata[TR_PATH_MAX]; /* SHGetFolderPath() requires MAX_PATH */
|
|
SHGetFolderPath( NULL, CSIDL_APPDATA, NULL, 0, appdata );
|
|
s = tr_buildPath( appdata, appname, NULL );
|
|
#elif defined( __HAIKU__ )
|
|
char buf[TR_PATH_MAX];
|
|
find_directory( B_USER_SETTINGS_DIRECTORY, -1, true, buf, sizeof(buf) );
|
|
s = tr_buildPath( buf, appname, NULL );
|
|
#else
|
|
if( ( s = getenv( "XDG_CONFIG_HOME" ) ) )
|
|
s = tr_buildPath( s, appname, NULL );
|
|
else
|
|
s = tr_buildPath( getHomeDir( ), ".config", appname, NULL );
|
|
#endif
|
|
}
|
|
}
|
|
|
|
return s;
|
|
}
|
|
|
|
const char*
|
|
tr_getDefaultDownloadDir( void )
|
|
{
|
|
static char * user_dir = NULL;
|
|
|
|
if( user_dir == NULL )
|
|
{
|
|
const char * config_home;
|
|
char * config_file;
|
|
char * content;
|
|
size_t content_len;
|
|
|
|
/* figure out where to look for user-dirs.dirs */
|
|
config_home = getenv( "XDG_CONFIG_HOME" );
|
|
if( config_home && *config_home )
|
|
config_file = tr_buildPath( config_home, "user-dirs.dirs", NULL );
|
|
else
|
|
config_file = tr_buildPath( getHomeDir( ), ".config", "user-dirs.dirs", NULL );
|
|
|
|
/* read in user-dirs.dirs and look for the download dir entry */
|
|
content = (char *) tr_loadFile( config_file, &content_len );
|
|
if( content && content_len>0 )
|
|
{
|
|
const char * key = "XDG_DOWNLOAD_DIR=\"";
|
|
char * line = strstr( content, key );
|
|
if( line != NULL )
|
|
{
|
|
char * value = line + strlen( key );
|
|
char * end = strchr( value, '"' );
|
|
|
|
if( end )
|
|
{
|
|
*end = '\0';
|
|
|
|
if( !memcmp( value, "$HOME/", 6 ) )
|
|
user_dir = tr_buildPath( getHomeDir( ), value+6, NULL );
|
|
else
|
|
user_dir = tr_strdup( value );
|
|
}
|
|
}
|
|
}
|
|
|
|
if( user_dir == NULL )
|
|
#ifdef __HAIKU__
|
|
user_dir = tr_buildPath( getHomeDir( ), "Desktop", NULL );
|
|
#else
|
|
user_dir = tr_buildPath( getHomeDir( ), "Downloads", NULL );
|
|
#endif
|
|
|
|
tr_free( content );
|
|
tr_free( config_file );
|
|
}
|
|
|
|
return user_dir;
|
|
}
|
|
|
|
/***
|
|
****
|
|
***/
|
|
|
|
static int
|
|
isWebClientDir( const char * path )
|
|
{
|
|
struct stat sb;
|
|
char * tmp = tr_buildPath( path, "index.html", NULL );
|
|
const int ret = !stat( tmp, &sb );
|
|
tr_inf( _( "Searching for web interface file \"%s\"" ), tmp );
|
|
tr_free( tmp );
|
|
return ret;
|
|
}
|
|
|
|
const char *
|
|
tr_getWebClientDir( const tr_session * session UNUSED )
|
|
{
|
|
static char * s = NULL;
|
|
|
|
if( !s )
|
|
{
|
|
if( ( s = getenv( "CLUTCH_HOME" ) ) )
|
|
{
|
|
s = tr_strdup( s );
|
|
}
|
|
else if( ( s = getenv( "TRANSMISSION_WEB_HOME" ) ) )
|
|
{
|
|
s = tr_strdup( s );
|
|
}
|
|
else
|
|
{
|
|
|
|
#ifdef SYS_DARWIN /* on Mac, look in the Application Support folder first, then in the app bundle. */
|
|
|
|
/* Look in the Application Support folder */
|
|
s = tr_buildPath( tr_sessionGetConfigDir( session ), "web", NULL );
|
|
|
|
if( !isWebClientDir( s ) ) {
|
|
tr_free( s );
|
|
|
|
CFURLRef appURL = CFBundleCopyBundleURL( CFBundleGetMainBundle( ) );
|
|
CFStringRef appRef = CFURLCopyFileSystemPath( appURL,
|
|
kCFURLPOSIXPathStyle );
|
|
const CFIndex appStringLength = CFStringGetMaximumSizeOfFileSystemRepresentation(appRef);
|
|
|
|
char * appString = tr_malloc( appStringLength );
|
|
const bool success = CFStringGetFileSystemRepresentation( appRef, appString, appStringLength );
|
|
assert( success );
|
|
|
|
CFRelease( appURL );
|
|
CFRelease( appRef );
|
|
|
|
/* Fallback to the app bundle */
|
|
s = tr_buildPath( appString, "Contents", "Resources", "web", NULL );
|
|
if( !isWebClientDir( s ) ) {
|
|
tr_free( s );
|
|
s = NULL;
|
|
}
|
|
|
|
tr_free( appString );
|
|
}
|
|
|
|
#elif defined( WIN32 )
|
|
|
|
/* SHGetFolderPath explicitly requires MAX_PATH length */
|
|
char dir[MAX_PATH];
|
|
|
|
/* Generally, Web interface should be stored in a Web subdir of
|
|
* calling executable dir. */
|
|
|
|
if( s == NULL ) {
|
|
/* First, we should check personal AppData/Transmission/Web */
|
|
SHGetFolderPath( NULL, CSIDL_COMMON_APPDATA, NULL, 0, dir );
|
|
s = tr_buildPath( dir, "Transmission", "Web", NULL );
|
|
if( !isWebClientDir( s ) ) {
|
|
tr_free( s );
|
|
s = NULL;
|
|
}
|
|
}
|
|
|
|
if( s == NULL ) {
|
|
/* check personal AppData */
|
|
SHGetFolderPath( NULL, CSIDL_APPDATA, NULL, 0, dir );
|
|
s = tr_buildPath( dir, "Transmission", "Web", NULL );
|
|
if( !isWebClientDir( s ) ) {
|
|
tr_free( s );
|
|
s = NULL;
|
|
}
|
|
}
|
|
|
|
if( s == NULL) {
|
|
/* check calling module place */
|
|
GetModuleFileName( GetModuleHandle( NULL ), dir, sizeof( dir ) );
|
|
s = tr_buildPath( dirname( dir ), "Web", NULL );
|
|
if( !isWebClientDir( s ) ) {
|
|
tr_free( s );
|
|
s = NULL;
|
|
}
|
|
}
|
|
|
|
#else /* everyone else, follow the XDG spec */
|
|
|
|
tr_list *candidates = NULL, *l;
|
|
const char * tmp;
|
|
|
|
/* XDG_DATA_HOME should be the first in the list of candidates */
|
|
tmp = getenv( "XDG_DATA_HOME" );
|
|
if( tmp && *tmp )
|
|
tr_list_append( &candidates, tr_strdup( tmp ) );
|
|
else {
|
|
char * dhome = tr_buildPath( getHomeDir( ), ".local", "share", NULL );
|
|
tr_list_append( &candidates, dhome );
|
|
}
|
|
|
|
/* XDG_DATA_DIRS are the backup directories */
|
|
{
|
|
const char * pkg = PACKAGE_DATA_DIR;
|
|
const char * xdg = getenv( "XDG_DATA_DIRS" );
|
|
const char * fallback = "/usr/local/share:/usr/share";
|
|
char * buf = tr_strdup_printf( "%s:%s:%s", (pkg?pkg:""), (xdg?xdg:""), fallback );
|
|
tmp = buf;
|
|
while( tmp && *tmp ) {
|
|
const char * end = strchr( tmp, ':' );
|
|
if( end ) {
|
|
if( ( end - tmp ) > 1 )
|
|
tr_list_append( &candidates, tr_strndup( tmp, end - tmp ) );
|
|
tmp = end + 1;
|
|
} else if( tmp && *tmp ) {
|
|
tr_list_append( &candidates, tr_strdup( tmp ) );
|
|
break;
|
|
}
|
|
}
|
|
tr_free( buf );
|
|
}
|
|
|
|
/* walk through the candidates & look for a match */
|
|
for( l=candidates; l; l=l->next ) {
|
|
char * path = tr_buildPath( l->data, "transmission", "web", NULL );
|
|
const int found = isWebClientDir( path );
|
|
if( found ) {
|
|
s = path;
|
|
break;
|
|
}
|
|
tr_free( path );
|
|
}
|
|
|
|
tr_list_free( &candidates, tr_free );
|
|
|
|
#endif
|
|
|
|
}
|
|
}
|
|
|
|
return s;
|
|
}
|
|
|
|
/***
|
|
****
|
|
***/
|
|
|
|
int64_t
|
|
tr_getFreeSpace( const char * path )
|
|
{
|
|
#ifdef WIN32
|
|
uint64_t freeBytesAvailable = 0;
|
|
return GetDiskFreeSpaceEx( path, &freeBytesAvailable, NULL, NULL)
|
|
? (int64_t)freeBytesAvailable
|
|
: -1;
|
|
#elif defined(HAVE_STATVFS)
|
|
struct statvfs buf;
|
|
return statvfs( path, &buf ) ? -1 : (int64_t)buf.f_bavail * (int64_t)buf.f_frsize;
|
|
#else
|
|
#warning FIXME: not implemented
|
|
return -1;
|
|
#endif
|
|
}
|
|
|
|
/***
|
|
****
|
|
***/
|
|
|
|
#ifdef WIN32
|
|
|
|
/* The following mmap functions are by Joerg Walter, and were taken from
|
|
* his paper at: http://www.genesys-e.de/jwalter/mix4win.htm
|
|
*/
|
|
|
|
#if defined(_MSC_VER)
|
|
__declspec( align( 4 ) ) static LONG volatile g_sl;
|
|
#else
|
|
static LONG volatile g_sl __attribute__ ( ( aligned ( 4 ) ) );
|
|
#endif
|
|
|
|
/* Wait for spin lock */
|
|
static int
|
|
slwait( LONG volatile *sl )
|
|
{
|
|
while( InterlockedCompareExchange ( sl, 1, 0 ) != 0 )
|
|
Sleep ( 0 );
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Release spin lock */
|
|
static int
|
|
slrelease( LONG volatile *sl )
|
|
{
|
|
InterlockedExchange ( sl, 0 );
|
|
return 0;
|
|
}
|
|
|
|
/* getpagesize for windows */
|
|
static long
|
|
getpagesize( void )
|
|
{
|
|
static long g_pagesize = 0;
|
|
|
|
if( !g_pagesize )
|
|
{
|
|
SYSTEM_INFO system_info;
|
|
GetSystemInfo ( &system_info );
|
|
g_pagesize = system_info.dwPageSize;
|
|
}
|
|
return g_pagesize;
|
|
}
|
|
|
|
static long
|
|
getregionsize( void )
|
|
{
|
|
static long g_regionsize = 0;
|
|
|
|
if( !g_regionsize )
|
|
{
|
|
SYSTEM_INFO system_info;
|
|
GetSystemInfo ( &system_info );
|
|
g_regionsize = system_info.dwAllocationGranularity;
|
|
}
|
|
return g_regionsize;
|
|
}
|
|
|
|
void *
|
|
mmap( void *ptr,
|
|
long size,
|
|
long prot,
|
|
long type,
|
|
long handle,
|
|
long arg )
|
|
{
|
|
static long g_pagesize;
|
|
static long g_regionsize;
|
|
|
|
/* Wait for spin lock */
|
|
slwait ( &g_sl );
|
|
/* First time initialization */
|
|
if( !g_pagesize )
|
|
g_pagesize = getpagesize ( );
|
|
if( !g_regionsize )
|
|
g_regionsize = getregionsize ( );
|
|
/* Allocate this */
|
|
ptr = VirtualAlloc ( ptr, size,
|
|
MEM_RESERVE | MEM_COMMIT | MEM_TOP_DOWN,
|
|
PAGE_READWRITE );
|
|
if( !ptr )
|
|
{
|
|
ptr = (void *) -1;
|
|
goto mmap_exit;
|
|
}
|
|
mmap_exit:
|
|
/* Release spin lock */
|
|
slrelease ( &g_sl );
|
|
return ptr;
|
|
}
|
|
|
|
long
|
|
munmap( void *ptr,
|
|
long size )
|
|
{
|
|
static long g_pagesize;
|
|
static long g_regionsize;
|
|
int rc = -1;
|
|
|
|
/* Wait for spin lock */
|
|
slwait ( &g_sl );
|
|
/* First time initialization */
|
|
if( !g_pagesize )
|
|
g_pagesize = getpagesize ( );
|
|
if( !g_regionsize )
|
|
g_regionsize = getregionsize ( );
|
|
/* Free this */
|
|
if( !VirtualFree ( ptr, 0,
|
|
MEM_RELEASE ) )
|
|
goto munmap_exit;
|
|
rc = 0;
|
|
munmap_exit:
|
|
/* Release spin lock */
|
|
slrelease ( &g_sl );
|
|
return rc;
|
|
}
|
|
|
|
#endif
|