/* .+

.identifier   : $Id: ChfPriv.h,v 2.2 2001/01/25 11:57:57 cibrario Exp $
.context      : CHF, Condition Handling Facility
.title	      : $RCSfile: ChfPriv.h,v $, main header
.kind	      : C header
.author	      : Ivan Cibrario B.
.site	      : CSTV-CNR
.creation     :	 2-May-1996
.keywords     : *
.description  :
  This is the private header of the Condition Handling Facility

.include      : *

.notes	      :
  $Log: ChfPriv.h,v $
  Revision 2.2  2001/01/25 11:57:57  cibrario
  Added partial Win32 support (Windows CE only).

  Revision 2.1  2000/05/26  14:14:36  cibrario
  - Defined new abort codes: CHF_ABORT_GET_CONTEXT, CHF_ABORT_PTHREAD
  - Redefined .unwind_context field of ChfHandlerDescriptor
  - Conditional retarget of chf_context for multithreading support
  - Declared new private function: _ChfGetContext() (mt support only)

  Revision 1.6  1997/01/15  13:38:24  cibrario
  Added the new field .handler_context to struct ChfHandlerDescriptor_S, to
  store, for each condition handler, the private handler context pointer.

  Revision 1.5  1996/10/04  09:43:51  cibrario
  Updated the condition message format to improve internationalization

  Revision 1.1  1996/05/28  12:56:37  cibrario
  Initial revision


.- */


/* -------------------------------------------------------------------------
   Macros
   ------------------------------------------------------------------------- */

#define CHF_MODULE_ID		CHF_SET
#define CHF_TMP_MESSAGE_LENGTH	(2*CHF_MAX_MESSAGE_LENGTH)
#define CHF_DEF_MESSAGE_LENGTH	40
#define CHF_DEF_PARTIAL_MSG_FMT	ChfText("Code <%d>d")
#define CHF_DEF_MID_MSG_FMT	ChfText("Mid <%d>d")
#define CHF_EXTENDED_INFO_FMT	ChfText("(%s,%d)")
#define CHF_SEVERITY_NAMES	\
{ ChfText("S"), ChfText("I"), ChfText("W"), ChfText("E"), ChfText("F") }
#define CHF_UNKNOWN_SEVERITY	ChfText("?")
#define CHF_MESSAGE_SEPARATOR	ChfText("-")
#define CHF_MESSAGE_TERMINATOR	ChfText("\n")
#define CHF_ABORT_HEADER	ChfText("ChfAbort-F-")
#define CHF_ABORT_BAD_CODE_FMT	ChfText("Bad abort code <%d>d\n")
#define CHF_ABORT_GOOD_CODE_FMT	ChfText("%s\n")


/* -------------------------------------------------------------------------
   Abort codes used with ChfAbort() 
   ------------------------------------------------------------------------- */

#define CHF_ABORT_SILENT		0
#define CHF_ABORT_INIT			1
#define CHF_ABORT_MSG_OVF		2
#define CHF_ABORT_INVALID_ACTION	3
#define CHF_ABORT_DUP_INIT		4
#define CHF_ABORT_ALREADY_UNWINDING	5
#define CHF_ABORT_IMPROPERLY_HANDLED	6
#define CHF_ABORT_FATAL_UNWINDING	7
#define CHF_ABORT_COND_STACK_OVF	8
#define CHF_ABORT_GET_CONTEXT		9
#define CHF_ABORT_PTHREAD		10



/* -------------------------------------------------------------------------
   Type definitions
   ------------------------------------------------------------------------- */

typedef struct ChfHandlerDescriptor_S
{
  ChfHandler handler;
  void *unwind_context;
  ChfPointer handler_context;
}
  ChfHandlerDescriptor;

typedef struct ChfContext_S	/* CHF Context */
{
  ChfState state;			/* Current CHF state */
  const ChfChar *app_name;		/* Application's name */
  ChfOptions options;			/* Options */
  void *mrs_data;			/* Message retrieval private data */
  ChfMrsGet mrs_get;			/* 'GetMessage' function */
  ChfMrsExit mrs_exit;			/* 'Exit' function */
  int condition_stack_size;		/* Size of the condition stack */
  int handler_stack_size;		/* Size of the handler stack */
  int exit_code;			/* Abnormal exit code */
  ChfDescriptor *condition_stack;	/* Condition stack */
  ChfDescriptor *condition_base;	/* Current condition stack base */
  ChfDescriptor *condition_sp;		/* Current condition stack pointer */
  ChfHandlerDescriptor *handler_stack;	/* Handler stack */
  ChfHandlerDescriptor *handler_sp;	/* Current handler stack pointer */
  ChfChar *message_buffer;		/* Message buffer */
}
  ChfContext;


/* -------------------------------------------------------------------------
   Multithreading support
 ------------------------------------------------------------------------- */
#ifdef _REENTRANT
#define chf_context (*_ChfGetContext())
#else
#define chf_context _chf_context
#endif


/* -------------------------------------------------------------------------
   Global variables
 ------------------------------------------------------------------------- */

extern ChfContext _chf_context;		/* CHF Context */


/* -------------------------------------------------------------------------
   Private function prototypes
 ------------------------------------------------------------------------- */
#ifdef _REENTRANT
ChfContext *_ChfGetContext(void);
#endif


/* -------------------------------------------------------------------------
   Private redirection of stdlib functions needed by Win32
 ------------------------------------------------------------------------- */

#ifdef _WIN32
#define ChfStrlen	  _tcslen
#define ChfStrcpy	  _tcscpy
#define ChfStrcat	  _tcscat
#define ChfStrncpy	  _tcsncpy
#define ChfSprintf	  _stprintf
#define ChfVsprintf	  _vstprintf
#else
#define ChfStrlen	  strlen
#define ChfStrcpy	  strcpy
#define ChfStrcat	  strcat
#define ChfStrncpy	  strncpy
#define ChfSprintf	  sprintf
#define ChfVsprintf	  vsprintf
#endif