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Provide a maintainer-only debug method
Generating debug logs to stdout or stderr makes it impossible to run tests etc. so create a dumb DBG facility to log to a temp file. This exists only in maintainer mode and the DBG macro gives a compile error if it's used in non-maintainer mode. * src/makeint.h (DBG): Call dbg() in maintainer mode, else error. (dbg): Define it in maintainer mode. * src/misc.c (dbg): Open a log file for append, write, then close.
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@ -658,8 +658,12 @@ int unload_file (const char *name);
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#ifdef MAKE_MAINTAINER_MODE
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# define SPIN(_s) spin (_s)
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void spin (const char* suffix);
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# define DBG(_f) dbg _f
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void dbg (const char *fmt, ...);
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#else
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# define SPIN(_s)
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/* Never put this code into Git or a release. */
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# define DBG(_f) compile-error
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#endif
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/* We omit these declarations on non-POSIX systems which define _POSIX_VERSION,
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16
src/misc.c
16
src/misc.c
@ -530,6 +530,22 @@ spin (const char* type)
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}
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}
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void
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dbg (const char *fmt, ...)
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{
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FILE *fp = fopen ("/tmp/gmkdebug.log", "a+");
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va_list args;
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char buf[4096];
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va_start (args, fmt);
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vsprintf (buf, fmt, args);
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va_end (args);
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fprintf(fp, "%u: %s\n", (unsigned) make_pid (), buf);
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fflush (fp);
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fclose (fp);
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}
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#endif
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