//
// File defining fields in the Yap_GLOBAL global structure
//
// these fields used to spread all over the place, because they must be used in 3 ways:
//  - they must be defined somewhere
//  - they have an #ifdef to get a shorter name
//  - they must be initialised somewhere
//  - they may be of interest to restore
//
// The defs include 4+ components:
//   Type
//   name in structured
//   global name
//   init code (optional)
//   restore code (optional)
//

// Stuff that must be shared by all threads or workers
START_GLOBAL_DATA

// initialization: tell whether the system has been initialised and by whom.
int		initialised		Yap_Initialised		=FALSE
int		initialised_from_pl	Yap_InitialisedFromPL	=FALSE
int		pl_argc			Yap_PL_Argc		=0
char	      **pl_argv			Yap_PL_Argv		=NULL

// halt hooks
struct halt_hook *yap_halt_hook		Yap_HaltHooks		=NULL

// stack overflow expansion/gc control
int		allow_local_expansion	Yap_AllowLocalExpansion =TRUE
int		allow_global_expansion	Yap_AllowGlobalExpansion =TRUE
int		allow_trail_expansion	Yap_AllowTrailExpansion =TRUE
UInt		size_of_overflow	Yap_SizeOfOverflow		=0
// amount of space recovered in all garbage collections
UInt		agc_last_call		Yap_AGcLastCall		=0
// amount of space recovered in all garbage collections
UInt		agc_threshold		Yap_AGcThreshold		=10000
Agc_hook	agc_hook		Yap_AGCHook			=NULL

/* multi-thread support */
#if THREADS
/* number of threads and processes in system */
UInt		n_of_threads		Yap_NOfThreads	=1
/* number of threads created since start */
UInt		n_of_threads_created	Yap_NOfThreadsCreated =1
/* total run time for dead threads */
UInt  threads_total_time		Yap_ThreadsTotalTime =0L
#endif

// multi-thread/ORP support
#if defined(YAPOR) || defined(THREADS)
// protect long critical regions
lockvar		bgl			Yap_BGL		MkLock
#endif

// Threads Array
#ifdef THREADS
lockvar		thread_handles_lock	Yap_ThreadHandlesLock	MkLock
#endif 

#if defined(YAPOR) || defined(TABLING)
struct global_optyap_data	optyap_data	Yap_optyap_data	void	
#endif /* YAPOR || TABLING */

END_GLOBAL_DATA