better filedata ref debug messages

The idea is this:
with --debug=2 geeqie writes log with pointers. If it crashes on
fd->magick, it writes the invalid pointer as a hex value before
the crash. Then the log can be grepped for this value to see
what happened with this fd in the past.

diff --git a/src/filedata.c b/src/filedata.c
index 0038d0e..60ad952 100644 (file)
--- a/src/filedata.c
+++ b/src/filedata.c
@@ -515,17 +515,19 @@ FileData *file_data_ref(FileData *fd)
 #endif
 {
        if (fd == NULL) return NULL;
-#ifdef DEBUG_FILEDATA
        if (fd->magick != 0x12345678)
-               DEBUG_0("fd magick mismatch at %s:%d", file, line);
+#ifdef DEBUG_FILEDATA
+               DEBUG_0("fd magick mismatch @ %s:%d  fd=%p", file, line, fd);
+#else
+               DEBUG_0("fd magick mismatch fd=%p", fd);
 #endif
        g_assert(fd->magick == 0x12345678);
        fd->ref++;
 
 #ifdef DEBUG_FILEDATA
-       DEBUG_2("file_data_ref (%d): '%s' @ %s:%d", fd->ref, fd->path, file, line);
+       DEBUG_2("file_data_ref fd=%p (%d): '%s' @ %s:%d", fd, fd->ref, fd->path, file, line);
 #else
-       DEBUG_2("file_data_ref (%d): '%s'", fd->ref, fd->path);
+       DEBUG_2("file_data_ref fd=%p (%d): '%s'", fd, fd->ref, fd->path);
 #endif
        return fd;
 }
@@ -558,17 +560,19 @@ void file_data_unref(FileData *fd)
 #endif
 {
        if (fd == NULL) return;
-#ifdef DEBUG_FILEDATA
        if (fd->magick != 0x12345678)
-               DEBUG_0("fd magick mismatch @ %s:%d", file, line);
+#ifdef DEBUG_FILEDATA
+               DEBUG_0("fd magick mismatch @ %s:%d  fd=%p", file, line, fd);
+#else
+               DEBUG_0("fd magick mismatch fd=%p", fd);
 #endif
        g_assert(fd->magick == 0x12345678);
        
        fd->ref--;
 #ifdef DEBUG_FILEDATA
-       DEBUG_2("file_data_unref (%d): '%s' @ %s:%d", fd->ref, fd->path, file, line);
+       DEBUG_2("file_data_unref fd=%p (%d): '%s' @ %s:%d", fd, fd->ref, fd->path, file, line);
 #else
-       DEBUG_2("file_data_unref (%d): '%s'", fd->ref, fd->path);
+       DEBUG_2("file_data_unref fd=%p (%d): '%s'", fd, fd->ref, fd->path);
 #endif
        if (fd->ref == 0)
                {