/*
 * This file Copyright (C) 2009-2010 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.
 *
 * $Id$
 */

#ifndef __TRANSMISSION__
 #error only libtransmission should #include this header.
#endif

#ifndef TR_PLATFORM_H
#define TR_PLATFORM_H

#define TR_PATH_DELIMITER '/'
#define TR_PATH_DELIMITER_STR "/"

#ifdef WIN32
 #include <windef.h> /* MAX_PATH */
 #define TR_PATH_MAX (MAX_PATH + 1)
#else
 #include <limits.h> /* PATH_MAX */
 #ifdef PATH_MAX
  #define TR_PATH_MAX PATH_MAX
 #else
  #define TR_PATH_MAX 4096
 #endif
#endif

/**
 * @addtogroup tr_session Session
 * @{
 */

/**
 * @brief invoked by tr_sessionInit() to set up the locations of the resume, torrent, and clutch directories.
 * @see tr_getResumeDir()
 * @see tr_getTorrentDir()
 * @see tr_getWebClientDir()
 */
void tr_setConfigDir( tr_session * session, const char * configDir );

/** @brief return the directory where .resume files are stored */
const char * tr_getResumeDir( const tr_session * );

/** @brief return the directory where .torrent files are stored */
const char * tr_getTorrentDir( const tr_session * );

/** @brief return the directory where the Web Client's web ui files are kept */
const char * tr_getWebClientDir( const tr_session * );

/** @brief return the number of bytes available for use in the specified path, or -1 on error */
int64_t tr_getFreeSpace( const char * path );


/** @} */


/**
 * @addtogroup utils Utilities
 * @{
 */

typedef struct tr_thread tr_thread;

/** @brief Instantiate a new process thread */
tr_thread* tr_threadNew( void ( *func )(void *), void * arg );

/** @brief Return nonzero if this function is being called from `thread'
    @param thread the thread being tested */
tr_bool tr_amInThread( const tr_thread * );

/***
****
***/

typedef struct tr_lock tr_lock;

/** @brief Create a new thread mutex object */
tr_lock * tr_lockNew( void );

/** @brief Destroy a thread mutex object */
void tr_lockFree( tr_lock * );

/** @brief Attempt to lock a thread mutex object */
void tr_lockLock( tr_lock * );

/** @brief Unlock a thread mutex object */
void tr_lockUnlock( tr_lock * );

/** @brief return nonzero if the specified lock is locked */
int tr_lockHave( const tr_lock * );

#ifdef WIN32
void * mmap( void *ptr, long  size, long  prot, long  type, long  handle, long  arg );

long munmap( void *ptr, long  size );
#endif

/* @} */

#endif