/****************************************************************************
- * Copyright 2018-2019,2020 Thomas E. Dickey *
+ * Copyright 2018-2021,2022 Thomas E. Dickey *
* Copyright 1998-2016,2017 Free Software Foundation, Inc. *
* *
* Permission is hereby granted, free of charge, to any person obtaining a *
/*
* lib_trace.c - Tracing/Debugging routines
*
- * The _tracef() function is originally from pcurses (by Pavel Curtis) in 1982.
+ * The _tracef() function is originally from pcurses (by Pavel Curtis) in 1982.
* pcurses allowed one to enable/disable tracing using traceon() and traceoff()
* functions. ncurses provides a trace() function which allows one to
* selectively enable or disable several tracing features.
#include <ctype.h>
-MODULE_ID("$Id: lib_trace.c,v 1.97 2020/08/29 16:22:03 juergen Exp $")
+MODULE_ID("$Id: lib_trace.c,v 1.101 2022/09/17 14:57:02 tom Exp $")
NCURSES_EXPORT_VAR(unsigned) _nc_tracing = 0; /* always define this */
#define MyNested _nc_globals.nested_tracef
#endif /* TRACE */
+#if USE_REENTRANT
+#define Locked(statement) { \
+ _nc_lock_global(tst_tracef); \
+ statement; \
+ _nc_unlock_global(tst_tracef); \
+ }
+#else
+#define Locked(statement) statement
+#endif
+
NCURSES_EXPORT(unsigned)
curses_trace(unsigned tracelevel)
{
unsigned result;
+
#if defined(TRACE)
- result = _nc_tracing;
+ int bit;
+
+#define DATA(name) { name, #name }
+ static struct {
+ unsigned mask;
+ const char *name;
+ } trace_names[] = {
+ DATA(TRACE_TIMES),
+ DATA(TRACE_TPUTS),
+ DATA(TRACE_UPDATE),
+ DATA(TRACE_MOVE),
+ DATA(TRACE_CHARPUT),
+ DATA(TRACE_CALLS),
+ DATA(TRACE_VIRTPUT),
+ DATA(TRACE_IEVENT),
+ DATA(TRACE_BITS),
+ DATA(TRACE_ICALLS),
+ DATA(TRACE_CCALLS),
+ DATA(TRACE_DATABASE),
+ DATA(TRACE_ATTRS)
+ };
+#undef DATA
+
+ Locked(result = _nc_tracing);
+
if ((MyFP == 0) && tracelevel) {
MyInit = TRUE;
if (MyFD >= 0) {
_nc_STRCAT(MyPath, ".log", sizeof(MyPath));
}
}
+#define SAFE_MODE (O_CREAT | O_EXCL | O_RDWR)
if (_nc_access(MyPath, W_OK) < 0
- || (MyFD = open(MyPath, O_CREAT | O_EXCL | O_RDWR, 0600)) < 0
+ || (MyFD = safe_open3(MyPath, SAFE_MODE, 0600)) < 0
|| (MyFP = fdopen(MyFD, BIN_W)) == 0) {
; /* EMPTY */
}
}
- _nc_tracing = tracelevel;
+ Locked(_nc_tracing = tracelevel);
/* Try to set line-buffered mode, or (failing that) unbuffered,
* so that the trace-output gets flushed automatically at the
- * end of each line. This is useful in case the program dies.
+ * end of each line. This is useful in case the program dies.
*/
if (MyFP != 0) {
#if HAVE_SETVBUF /* ANSI */
NCURSES_VERSION,
NCURSES_VERSION_PATCH,
tracelevel);
+
+#define SPECIAL_MASK(mask) \
+ if ((tracelevel & mask) == mask) \
+ _tracef("- %s (%u)", #mask, mask)
+
+ for (bit = 0; bit < TRACE_SHIFT; ++bit) {
+ unsigned mask = (1U << bit) & tracelevel;
+ if ((mask & trace_names[bit].mask) != 0) {
+ _tracef("- %s (%u)", trace_names[bit].name, mask);
+ }
+ }
+ SPECIAL_MASK(TRACE_MAXIMUM);
+ else
+ SPECIAL_MASK(TRACE_ORDINARY);
+
+ if (tracelevel > TRACE_MAXIMUM) {
+ _tracef("- DEBUG_LEVEL(%u)", tracelevel >> TRACE_SHIFT);
+ }
} else if (tracelevel == 0) {
if (MyFP != 0) {
MyFD = dup(MyFD); /* allow reopen of same file */
fclose(MyFP);
MyFP = 0;
}
- _nc_tracing = tracelevel;
+ Locked(_nc_tracing = tracelevel);
} else if (_nc_tracing != tracelevel) {
- _nc_tracing = tracelevel;
+ Locked(_nc_tracing = tracelevel);
_tracef("tracelevel=%#x", tracelevel);
}
#else