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dbug.h
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/*
* dbug.h -- definitions for re-implementation of Fred Fish's DBUG package
*
* Copyright 1992-1995,2008 Dale Schumacher, ALL RIGHTS RESERVED.
*/
#ifndef DBUG_H_
#define DBUG_H_
#include <stdio.h> /* for FILE, stderr, etc... */
#include <unistd.h> /* for getpid() */
struct dbug_cfg_t { /* runtime information */
int mode; /* dbug mode settings */
char * process; /* process name */
int proc_id; /* process id */
FILE * output; /* output stream */
int indent; /* indent depth */
int maxdepth; /* trace depth limit */
int line_cnt; /* output line counter */
char * proc_list; /* enabled process list */
char * unit_list; /* enabled unit list */
char * fn_list; /* enabled function list */
char * kw_list; /* enabled keyword list */
struct dbug_ctx_t * ctx; /* current context pointer */
struct dbug_cfg_t * prev; /* previous configuration */
};
struct dbug_unit_t { /* file-level information */
char * name; /* source file name */
char * unit; /* unit name */
};
struct dbug_ctx_t { /* function-level information */
char * name; /* function name */
int depth; /* call-nesting depth */
int line; /* source line number */
char * keyword; /* activation keyword */
struct dbug_unit_t * unit; /* current unit pointer */
struct dbug_ctx_t * caller; /* calling context pointer */
};
extern int dbug_on; /* TRUE if debug currently enabled */
#ifdef DBUG_OFF
#define DBUG_ENTER(NAME)
#define DBUG_LEAVE
#define DBUG_RETURN return
#define DBUG_EXECUTE(KW,CODE)
#define DBUG_PRINT(KW,ARGS)
#define DBUG_PUSH(CFG)
#define DBUG_POP()
#define DBUG_PROCESS(NAME)
#define DBUG_UNIT(NAME)
#define DBUG_FILE (stderr)
#define DBUG_HEXDUMP(PTR,CNT)
#else /* DBUG_OFF */
extern struct dbug_cfg_t * dbug_cfg; /* current configuration */
int dbug_keyword(char *); /* accept/reject keyword */
void dbug_push(char *); /* push state, set new state */
void dbug_pop(void); /* pop previous debug state */
void dbug_enter(struct dbug_ctx_t *ctx); /* user function entered */
void dbug_return(struct dbug_ctx_t *ctx); /* user function return */
void dbug_print(char *, ...); /* print debug output */
void dbug_hexdump(void *p, int n); /* hexdump buffer contents */
#define DBUG_ENTER(NAME) struct dbug_ctx_t dbug_ctx;\
dbug_ctx.name = (NAME);\
dbug_ctx.depth = dbug_cfg->ctx->depth;\
dbug_ctx.line = __LINE__;\
dbug_ctx.keyword = "";\
dbug_ctx.unit = &dbug_unit;\
dbug_ctx.caller = dbug_cfg->ctx;\
dbug_enter (&dbug_ctx)
#define DBUG_RETURN \
dbug_ctx.line = __LINE__;\
dbug_return (&dbug_ctx);\
return
#define DBUG_EXECUTE(KW,CODE) do{\
if(dbug_on && dbug_keyword (KW)){\
CODE;\
}}while(0)
#define DBUG_PRINT(KW,ARGS) do{\
if(dbug_on && dbug_keyword (dbug_cfg->ctx->keyword = (KW))){\
dbug_cfg->ctx->line = __LINE__;\
dbug_print ARGS;\
}}while(0)
#define DBUG_PUSH(CFG) do{\
dbug_cfg->ctx->line = __LINE__;\
dbug_push (CFG);\
}while(0)
#define DBUG_POP() do{\
dbug_cfg->ctx->line = __LINE__;\
dbug_pop ();\
}while(0)
#define DBUG_PROCESS(NAME) (\
dbug_cfg->output = (dbug_cfg->output ? dbug_cfg->output : stderr),\
dbug_cfg->proc_id = (int)getpid(),\
dbug_cfg->process = (NAME))
#define DBUG_UNIT(NAME) static struct dbug_unit_t dbug_unit =\
{__FILE__, (NAME)}
#define DBUG_FILE (dbug_cfg->output)
#define DBUG_HEXDUMP(PTR,CNT) do{\
if(dbug_on){\
dbug_hexdump (PTR,CNT);\
}}while(0)
#endif /* DBUG_OFF */
#ifdef XDBUG
#define XDBUG_ENTER(NAME) DBUG_ENTER(NAME)
#define XDBUG_PRINT(KW,ARGS) DBUG_PRINT(KW,ARGS)
#define XDBUG_RETURN DBUG_RETURN
#else /* XDBUG */
#define XDBUG_ENTER(NAME)
#define XDBUG_PRINT(KW,ARGS)
#define XDBUG_RETURN return
#endif /* XDBUG */
#endif /* DBUG_H_ */