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/* (C) Copyright 1993-7, Fred Hutchinson Cancer Research Center */
/* Use, modification or distribution of these programs is subject to */
/* the terms of the non-commercial licensing agreement in license.h. */
/* errors.h: error reporting functions */
/* Written by: Bill Alford */
/* Change log information is at the end of the file. */
#ifndef ERRORS_H_
#define ERRORS_H_
/*
* Exported variables and data structures
*/
#define INFO_ERR_LVL 1 /* General information. */
#define WARNING_ERR_LVL 2 /* Probable user error. */
/* Generally recoverable. */
#define SERIOUS_ERR_LVL 3 /* Probable user error. */
/* Difficult to recover from. */
#define PROGRAM_ERR_LVL 4 /* Programing error, problem should have */
/* been caught before it arose. */
/* Recoverability varies. */
#define FATAL_ERR_LVL 5 /* Various causes, user or programmer. */
/* Unable to recover from. */
/* Exits program with FATAL_ERR_LVL value. */
extern char ErrorBuffer[LARGE_BUFF_LENGTH+SMALL_BUFF_LENGTH];
extern int ErrorLevelReport;
/*
* Exported functions
*/
/*
* set_error_file_name
* Sets the name of the error output file to use.
* Parameters:
* char *error_file: the name of the file.
* Error codes: None
*/
extern void set_error_file_name();
/*
* ErrorReport
* ErrorReport prints out the error message in the ErrorBuffer to stderr and
* the ErrorFile if it can be opened.
* Note: The error message must be placed in ErrorBuffer before ErrorReport
* is called.
* Parameters:
* int err_level: The error level reporting at. If the error level is
* >= FATAL_ERR_LVL, exit() is called with the error level.
* Error codes: None
*/
extern void ErrorReport();
/*
* ABRT_signal_handler
* Catches the SIGABRT signal and announces the probable cause that was
* seen in testing. It appears that when there is very little memory
* left free() has a hard time deallocating memory. I'm guessing that it
* is when it is trying to put the free memory block into a list, the
* error that occurs is: "getfreehdr: out of memory". The error seems to
* have only occured in the function call free() after many small blocks
* of memory have been freed. It probably cannot handle as many free
* blocks of memory as it is getting.
* NOTE: The memory recover functions "should" work. The only
* problem appears to be in the function free(). The function is
* always called with a valid pointer to a busy block, allocated
* previously by a malloc function, when the error occurs. And for
* about 10 calls before the error the pointer is OK too. The
* problem I'm having with free() may be particular to this
* development system (SunOS Release 4.1.3) or I might have done
* something that causes this side effect.
* NOTE: The function recover_memory() in memory.c handles the recovery
* of memory when there is no more allocatable memory. See the macro
* CheckMem(A) in memory.h to see how the function is called.
* Parameters: none
* Error codes: none, aborts the program.
*/
extern void ABRT_signal_handler();
#endif /* ERRORS_H_ */
/* Change log information follows. */
/*
* Revision 0.20 1993/06/23 16:46:49 billa
* creation, error reporting to stderr and to the error file from
* ErrorReport()
*
*/
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