| 0,0 → 1,106 |
|---|
| /* PDCurses */ |
| |
| #include <curspriv.h> |
| |
| /*man-start************************************************************** |
| |
| debug |
| ----- |
| |
| ### Synopsis |
| |
| void traceon(void); |
| void traceoff(void); |
| void PDC_debug(const char *, ...); |
| |
| ### Description |
| |
| traceon() and traceoff() toggle the recording of debugging |
| information to the file "trace". Although not standard, similar |
| functions are in some other curses implementations. |
| |
| PDC_debug() is the function that writes to the file, based on whether |
| traceon() has been called. It's used from the PDC_LOG() macro. |
| |
| The environment variable PDC_TRACE_FLUSH controls whether the trace |
| file contents are fflushed after each write. The default is not. Set |
| it to enable this (may affect performance). |
| |
| ### Portability |
| X/Open ncurses NetBSD |
| traceon - - - |
| traceoff - - - |
| PDC_debug - - - |
| |
| **man-end****************************************************************/ |
| |
| #include <stdlib.h> |
| #include <string.h> |
| #include <sys/types.h> |
| #include <time.h> |
| |
| static bool want_fflush = FALSE; |
| |
| void PDC_debug(const char *fmt, ...) |
| { |
| va_list args; |
| char hms[9]; |
| time_t now; |
| |
| if (!SP || !SP->dbfp) |
| return; |
| |
| time(&now); |
| strftime(hms, 9, "%H:%M:%S", localtime(&now)); |
| fprintf(SP->dbfp, "At: %8.8ld - %s ", (long) clock(), hms); |
| |
| va_start(args, fmt); |
| vfprintf(SP->dbfp, fmt, args); |
| va_end(args); |
| |
| /* If you are crashing and losing debugging information, enable this |
| by setting the environment variable PDC_TRACE_FLUSH. This may |
| impact performance. */ |
| |
| if (want_fflush) |
| fflush(SP->dbfp); |
| |
| /* If with PDC_TRACE_FLUSH enabled you are still losing logging in |
| crashes, you may need to add a platform-dependent mechanism to |
| flush the OS buffers as well (such as fsync() on POSIX) -- but |
| expect terrible performance. */ |
| } |
| |
| void traceon(void) |
| { |
| if (!SP) |
| return; |
| |
| if (SP->dbfp) |
| fclose(SP->dbfp); |
| |
| /* open debug log file append */ |
| SP->dbfp = fopen("trace", "a"); |
| if (!SP->dbfp) |
| { |
| fprintf(stderr, "PDC_debug(): Unable to open debug log file\n"); |
| return; |
| } |
| |
| if (getenv("PDC_TRACE_FLUSH")) |
| want_fflush = TRUE; |
| |
| PDC_LOG(("traceon() - called\n")); |
| } |
| |
| void traceoff(void) |
| { |
| if (!SP || !SP->dbfp) |
| return; |
| |
| PDC_LOG(("traceoff() - called\n")); |
| |
| fclose(SP->dbfp); |
| SP->dbfp = NULL; |
| want_fflush = FALSE; |
| } |