traceonoff.c

来自「操作系统SunOS 4.1.3版本的源码」· C语言 代码 · 共 31 行

#ifndef lint
static	char sccsid[] = "@(#)traceonoff.c 1.1 92/07/30 SMI"; /* from S5R2 1.1 */
#endif

#include "curses.ext"

traceon()
{
#ifdef DEBUG
	if (outf == NULL) {
		outf = fopen("trace", "a");
		if (outf == NULL) {
			perror("trace");
			exit(-1);
		}
		fprintf(outf, "trace turned on\n");
	}
#endif
}

traceoff()
{
#ifdef DEBUG
	if (outf != NULL) {
		fprintf(outf, "trace turned off\n");
		fclose(outf);
		outf = NULL;
	}
#endif
}