- Add libthr but don't hook it up to the regular build yet. This is an

   adaptation of libc_r for the thr system call interface.  This is beta
   quality code.

1 files changed, 124 insertions, 0 deletions

diff --git a/lib/libthr/thread/thr_printf.c b/lib/libthr/thread/thr_printf.c
new file mode 100644
index 0000000..0da9ae5
--- /dev/null
+++ b/lib/libthr/thread/thr_printf.c
@@ -0,0 +1,124 @@
+/*-
+ * Copyright (c) 2002 Jonathan Mini <mini@freebsd.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <sys/types.h>
+#include <sys/fcntl.h>
+#include <sys/uio.h>
+#include <errno.h>
+#include <stdarg.h>
+#include <unistd.h>
+#include <pthread.h>
+
+#include "thr_private.h"
+
+static void	pchar(int fd, char c);
+static void	pstr(int fd, const char *s);
+
+/*
+ * Write formatted output to stdout, in a thread-safe manner.
+ *
+ * Recognises the following conversions:
+ *	%c	-> char
+ *	%d	-> signed int (base 10)
+ *	%s	-> string
+ *	%u	-> unsigned int (base 10)
+ *	%x	-> unsigned int (base 16)
+ *	%p	-> unsigned int (base 16)
+ */
+void
+_thread_printf(int fd, const char *fmt, ...)
+{
+	static const char digits[16] = "0123456789abcdef";
+	va_list	 ap;
+	char buf[10];
+	char *s;
+	unsigned r, u;
+	int c, d;
+
+	va_start(ap, fmt);
+	while ((c = *fmt++)) {
+		if (c == '%') {
+			c = *fmt++;
+			switch (c) {
+			case 'c':
+				pchar(fd, va_arg(ap, int));
+				continue;
+			case 's':
+				pstr(fd, va_arg(ap, char *));
+				continue;
+			case 'd':
+			case 'u':
+			case 'p':
+			case 'x':
+				r = ((c == 'u') || (c == 'd')) ? 10 : 16;
+				if (c == 'd') {
+					d = va_arg(ap, unsigned);
+					if (d < 0) {
+						pchar(fd, '-');
+						u = (unsigned)(d * -1);
+					} else
+						u = (unsigned)d;
+				} else
+					u = va_arg(ap, unsigned);
+				s = buf;
+				do {
+					*s++ = digits[u % r];
+				} while (u /= r);
+				while (--s >= buf)
+					pchar(fd, *s);
+				continue;
+			}
+		}
+		pchar(fd, c);
+	}
+	va_end(ap);
+}
+
+/*
+ * Write a single character to stdout, in a thread-safe manner.
+ */
+static void
+pchar(int fd, char c)
+{
+
+	write(fd, &c, 1);
+}
+
+/*
+ * Write a string to stdout, in a thread-safe manner.
+ */
+static void
+pstr(int fd, const char *s)
+{
+
+	write(fd, s, strlen(s));
+}
+