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- /*
- * DL.h - support for logging (printf...) style debugging using gdb.
- *
- * Copyright (c) 1997 Phil Maker
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * Id: DL.h,v 1.1.1.1 1997/11/23 11:45:50 pjm Exp
- */
-
- #ifndef _DL_h_
- #define _DL_h_ 1
-
- #ifdef __cplusplus
- extern "C" {
- #endif
-
- #ifndef WITHOUT_NANA
-
- /*
- * nana-config.h - the system wide configuration file; we put the ifndef
- * around it to avoid the file 5 million times during a compile.
- */
-
- #ifndef _nana_config_h_
- #include <nana-config.h>
- #endif
-
- /*
- * DL_MAKE_VALID_BREAKPOINT() - used to make sure that we can put a
- * breakpoint at this location. We default to a portable C expression
- * which simply does an assignment. The configure script may override
- * this (on an architecture basis) and replace it with something
- * like asm("nop");
- */
-
- #ifndef DL_MAKE_VALID_BREAKPOINT
- static volatile int _dl_target;
-
- #define DL_MAKE_VALID_BREAKPOINT() _dl_target = 0
- #endif
-
- /*
- * DL_LEVEL sets the level of logging analogously to NDEBUG in assert.h
- *
- * DL_LEVEL == 2: always print.
- * DL_LEVEL == 1: print iff the guard is true.
- * DL_LEVEL == 0: never print.
- */
-
- #ifndef DL_LEVEL /* define DEFAULT for DL_LEVEL */
- #define DL_LEVEL 1
- #endif
-
- /*
- * DL_DEFAULT_HANDLER - the default print handler; by default we just
- * the debugger printf.
- *
- * @@call (void) printf(f)@@
- */
-
- #ifndef DL_DEFAULT_HANDLER /* define default handler */
- #define DL_DEFAULT_HANDLER(g,h,p,f...) @@printf f@@
- #endif /* DL_DEFAULT_HANDLER */
-
- /*
- * DL_DEFAULT_GUARD - the default guard expression; a message is printed
- * iff the guard is true. By default its always true.
- */
-
- #ifndef DL_DEFAULT_GUARD
- #define DL_DEFAULT_GUARD (1)
- #endif
-
- /*
- * DL_DEFAULT_PARAMS - the default value to be passed as the second argument
- * to the handler macro when an invariant fails.
- */
-
-
- #ifndef DL_DEFAULT_PARAMS
- #define DL_DEFAULT_PARAMS stderr
- #endif
-
- /*
- * DL_SHOW_TIME - if its defined then each message gets a timestamp in front.
- */
-
- #ifdef DL_SHOW_TIME
-
- unsigned long _L_gettime(void); /* returns the current time */
-
- #define _DL_SHOWTIME(h,p) @@call (void) h (p, "%-8ld ", _L_gettime())@@
- #else
-
- #define _DL_SHOWTIME(h,p) /* nothing */
-
- #endif /* DL_SHOWTIME */
-
- /*
- * DLGHP(g,h,p,f...) - print a log message.
- *
- * g - the guard; print the message iff this is true
- * h - the handler function that does the actual printing
- * p - a parameter for the handler function; e.g. a file descriptor.
- * f - the format and the data...
- */
-
- #if DL_LEVEL == 2 /* always log the message */
- #ifdef _NANA_FILTER_
- #define DLGHP(g,h,p,f...) \
- do { \
- @@break @__FILE__:__LINE__@@ \
- @@command $bpnum@@ \
- @@silent@@ \
- _DL_SHOWTIME(h,p); \
- DL_DEFAULT_HANDLER(g,h,p,##f); \
- @@cont@@ \
- @@end@@ \
- } while(0)
- #else
- #define DLGHP(g,h,p,f...) DL_MAKE_VALID_BREAKPOINT()
- #endif
-
- #elif DL_LEVEL == 1 /* log it iff the guard is true */
-
- #ifdef _NANA_FILTER_
- #define DLGHP(g,h,p,f...) \
- do { \
- if(g) { \
- @@break @__FILE__:__LINE__@@ \
- @@condition $bpnum g@@ \
- @@command $bpnum@@ \
- @@silent@@ \
- _DL_SHOWTIME(h,p); \
- DL_DEFAULT_HANDLER(g,h,p,##f); \
- @@cont@@ \
- @@end@@ \
- } \
- } while(0)
- #else
- #define DLGHP(g,h,p,f...) DL_MAKE_VALID_BREAKPOINT()
- #endif
-
- #elif DL_LEVEL == 0 /* no logging so ignore them */
- #define DLGHP(g,h,p,f...) /* nothing */
- #endif /* DL_LEVEL */
-
- /*
- * And the user routines.
- */
-
- #define DL(f...) \
- DLGHP(DL_DEFAULT_GUARD,DL_DEFAULT_HANDLER,DL_DEFAULT_PARAMS,##f)
- #define DLG(g,f...) \
- DLGHP(g,DL_DEFAULT_HANDLER,DL_DEFAULT_PARAMS,##f)
- #define DLH(h,f...) \
- DLGHP(DL_DEFAULT_GUARD,h,DL_DEFAULT_PARAMS,##f)
- #define DLP(p,f...) \
- DLGHP(DL_DEFAULT_GUARD,DL_DEFAULT_HANDLER,p,##f)
- #define DLGP(g,p,f...) \
- DLGHP(g,DL_DEFAULT_HANDLER,p,##f)
- #define DLHP(h,p,f...) \
- DLGHP(DL_DEFAULT_GUARD,h,p,##f)
-
-
- /*
- * V* - since the DL* macros take a variable numbers of arguments we
- * have problems compiling calls to L with C preprocessors other
- * than GNU cccp. The V* macros are called using a bracketed arglist, e.g.
- * VDL((s,x,y))
- *
- * if we are compiling with GNU C then they simply call the normal
- * varargs macros. if we are not using GNU C then they map to empty.
- */
-
- #define VDL(a) DL a
- #define VDLG(a) DLG a
- #define VDLH(a) DLH a
- #define VDLP(a) DLP a
- #define VDLGP(a) DLGP a
- #define VDLHP(a) DLHP a
- #define VDLGHP(a) DLGHP a
-
- #else /* defined(WITHOUT_NANA) */
-
- #define VDL(a) /* empty */
- #define VDLG(a) /* empty */
- #define VDLH(a) /* empty */
- #define VDLP(a) /* empty */
- #define VDLGP(a) /* empty */
- #define VDLHP(a) /* empty */
- #define VDLGHP(a) /* empty */
-
- #endif /* !defined(WITHOUT_NANA) */
-
-
- #ifdef __cplusplus
- }
- #endif
-
- #endif /* _DL_h_ */
-
-
-
-
-
-