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/* env.h (GLPK environment) */
/***********************************************************************
* This code is part of GLPK (GNU Linear Programming Kit).
*
* Copyright (C) 2000-2017 Andrew Makhorin, Department for Applied
* Informatics, Moscow Aviation Institute, Moscow, Russia. All rights
* reserved. E-mail: <mao@gnu.org>.
*
* GLPK is free software: you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* GLPK is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
* License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GLPK. If not, see <http://www.gnu.org/licenses/>.
***********************************************************************/
#ifndef ENV_H
#define ENV_H
#include "stdc.h"
typedef struct ENV ENV;
typedef struct MBD MBD;
#define SIZE_T_MAX (~(size_t)0)
/* largest value of size_t type */
#define TBUF_SIZE 4096
/* terminal output buffer size, in bytes */
#define EBUF_SIZE 1024
/* error message buffer size, in bytes */
/* enable/disable flag: */
#define GLP_ON 1
#define GLP_OFF 0
struct ENV
{ /* GLPK environment block */
#if 0 /* 14/I-2007 */
char version[7+1];
/* version string returned by the routine glp_version */
#endif
ENV *self;
/* pointer to this block to check its validity */
/*--------------------------------------------------------------*/
/* terminal output */
char *term_buf; /* char term_buf[TBUF_SIZE]; */
/* terminal output buffer */
int term_out;
/* flag to enable/disable terminal output */
int (*term_hook)(void *info, const char *s);
/* user-defined routine to intercept terminal output */
void *term_info;
/* transit pointer (cookie) passed to the routine term_hook */
FILE *tee_file;
/* output stream used to copy terminal output */
/*--------------------------------------------------------------*/
/* error handling */
#if 1 /* 07/XI-2015 */
int err_st;
/* error state flag; set on entry to glp_error */
#endif
const char *err_file;
/* value of the __FILE__ macro passed to glp_error */
int err_line;
/* value of the __LINE__ macro passed to glp_error */
void (*err_hook)(void *info);
/* user-defined routine to intercept abnormal termination */
void *err_info;
/* transit pointer (cookie) passed to the routine err_hook */
char *err_buf; /* char err_buf[EBUF_SIZE]; */
/* buffer to store error messages (used by I/O routines) */
/*--------------------------------------------------------------*/
/* dynamic memory allocation */
size_t mem_limit;
/* maximal amount of memory, in bytes, available for dynamic
* allocation */
MBD *mem_ptr;
/* pointer to the linked list of allocated memory blocks */
int mem_count;
/* total number of currently allocated memory blocks */
int mem_cpeak;
/* peak value of mem_count */
size_t mem_total;
/* total amount of currently allocated memory, in bytes; it is
* the sum of the size field over all memory block descriptors */
size_t mem_tpeak;
/* peak value of mem_total */
#if 1 /* 23/XI-2015 */
/*--------------------------------------------------------------*/
/* bignum module working area */
void *gmp_pool; /* DMP *gmp_pool; */
/* working memory pool */
int gmp_size;
/* size of working array */
unsigned short *gmp_work; /* ushort gmp_work[gmp_size]; */
/* working array */
#endif
/*--------------------------------------------------------------*/
/* dynamic linking support (optional) */
void *h_odbc;
/* handle to ODBC shared library */
void *h_mysql;
/* handle to MySQL shared library */
};
struct MBD
{ /* memory block descriptor */
size_t size;
/* size of block, in bytes, including descriptor */
MBD *self;
/* pointer to this descriptor to check its validity */
MBD *prev;
/* pointer to previous memory block descriptor */
MBD *next;
/* pointer to next memory block descriptor */
};
#define get_env_ptr _glp_get_env_ptr
ENV *get_env_ptr(void);
/* retrieve pointer to environment block */
#define tls_set_ptr _glp_tls_set_ptr
void tls_set_ptr(void *ptr);
/* store global pointer in TLS */
#define tls_get_ptr _glp_tls_get_ptr
void *tls_get_ptr(void);
/* retrieve global pointer from TLS */
#define xputs glp_puts
void glp_puts(const char *s);
/* write string on terminal */
#define xprintf glp_printf
void glp_printf(const char *fmt, ...);
/* write formatted output on terminal */
#define xvprintf glp_vprintf
void glp_vprintf(const char *fmt, va_list arg);
/* write formatted output on terminal */
int glp_term_out(int flag);
/* enable/disable terminal output */
void glp_term_hook(int (*func)(void *info, const char *s), void *info);
/* install hook to intercept terminal output */
int glp_open_tee(const char *fname);
/* start copying terminal output to text file */
int glp_close_tee(void);
/* stop copying terminal output to text file */
#ifndef GLP_ERRFUNC_DEFINED
#define GLP_ERRFUNC_DEFINED
typedef void (*glp_errfunc)(const char *fmt, ...);
#endif
#define xerror glp_error_(__FILE__, __LINE__)
glp_errfunc glp_error_(const char *file, int line);
/* display fatal error message and terminate execution */
#define xassert(expr) \
((void)((expr) || (glp_assert_(#expr, __FILE__, __LINE__), 1)))
void glp_assert_(const char *expr, const char *file, int line);
/* check for logical condition */
void glp_error_hook(void (*func)(void *info), void *info);
/* install hook to intercept abnormal termination */
#define put_err_msg _glp_put_err_msg
void put_err_msg(const char *msg);
/* provide error message string */
#define get_err_msg _glp_get_err_msg
const char *get_err_msg(void);
/* obtain error message string */
#define xmalloc(size) glp_alloc(1, size)
/* allocate memory block (obsolete) */
#define xcalloc(n, size) glp_alloc(n, size)
/* allocate memory block (obsolete) */
#define xalloc(n, size) glp_alloc(n, size)
#define talloc(n, type) ((type *)glp_alloc(n, sizeof(type)))
void *glp_alloc(int n, int size);
/* allocate memory block */
#define xrealloc(ptr, n, size) glp_realloc(ptr, n, size)
#define trealloc(ptr, n, type) ((type *)glp_realloc(ptr, n, \
sizeof(type)))
void *glp_realloc(void *ptr, int n, int size);
/* reallocate memory block */
#define xfree(ptr) glp_free(ptr)
#define tfree(ptr) glp_free(ptr)
void glp_free(void *ptr);
/* free memory block */
void glp_mem_limit(int limit);
/* set memory usage limit */
void glp_mem_usage(int *count, int *cpeak, size_t *total,
size_t *tpeak);
/* get memory usage information */
typedef struct glp_file glp_file;
/* sequential stream descriptor */
#define glp_open _glp_open
glp_file *glp_open(const char *name, const char *mode);
/* open stream */
#define glp_eof _glp_eof
int glp_eof(glp_file *f);
/* test end-of-file indicator */
#define glp_ioerr _glp_ioerr
int glp_ioerr(glp_file *f);
/* test I/O error indicator */
#define glp_read _glp_read
int glp_read(glp_file *f, void *buf, int nnn);
/* read data from stream */
#define glp_getc _glp_getc
int glp_getc(glp_file *f);
/* read character from stream */
#define glp_write _glp_write
int glp_write(glp_file *f, const void *buf, int nnn);
/* write data to stream */
#define glp_format _glp_format
int glp_format(glp_file *f, const char *fmt, ...);
/* write formatted data to stream */
#define glp_close _glp_close
int glp_close(glp_file *f);
/* close stream */
#define xtime glp_time
double glp_time(void);
/* determine current universal time */
#define xdifftime glp_difftime
double glp_difftime(double t1, double t0);
/* compute difference between two time values */
#define xdlopen _glp_dlopen
void *xdlopen(const char *module);
/* open dynamically linked library */
#define xdlsym _glp_dlsym
void *xdlsym(void *h, const char *symbol);
/* obtain address of symbol from dynamically linked library */
#define xdlclose _glp_dlclose
void xdlclose(void *h);
/* close dynamically linked library */
#endif
/* eof */
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