- /* A log-entry has usually 50 bytes, so we take 64 bytes.
- Because files are wrapped (log.0, log.1, ...) every 100
- lines, we don't need more than 100 * 64 bytes. */
- char *buffer = malloc(sizeof(char) * 64 * 100);
- char filename[8];
- int read = 0;
- unsigned int c;
-
- if (buffer == NULL) {
- cprintf("No memory available\n");
- exit(1);
- }
-
- buffer[0] = '\0';
- if (((++log_lines_written) % 100) == 0)
- log_num++;
- sprintf(filename, "log-%d", log_num);
- /* Don't read log if there were no lines written before */
- if (log_lines_written != 1) {
- if ((c = cbm_open((BYTE)8, (BYTE)8, (BYTE)0, filename)) != 0) {
- c128_perror(c, "cbm_open(log)");
- exit(1);
- }
- read = cbm_read((BYTE)8, buffer, sizeof(char) * 64 * 100);
- cbm_close((BYTE)8);
- _sysremove(filename);
- }
- if ((c = cbm_open((BYTE)8, (BYTE)8, (BYTE)1, filename)) != 0) {
- c128_perror(c, "cbm_open(log)");
- exit(1);
- }
- if (read < 0) {
- cprintf("Could not read existing logfile (read returned %d)\n", read);
- exit(1);
- }
- strcpy(buffer+read, s);
- c = cbm_write((BYTE)8, buffer, read+strlen(s));
- if (c != (read+strlen(s))) {
- cprintf("Could not save logfile (wrote %d bytes, wanted %d bytes), please make sure the floppy is not full!\n", c, (read+strlen(s)));
- exit(1);
- }
- cbm_close((BYTE)8);
- free(buffer);
+ strcpy(log_heap_buf + log_heap_offset, s);
+ log_heap_offset += strlen(s);
+
+ /* Force a flush when there are only five lines left */
+ if (log_heap_offset > (LOG_SIZE - (5 * 80))) {
+ log_flush();
+ log_num++;
+ log_heap_offset = 0;
+ log_heap_flushed = 0;
+ }