From: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Date: Sat, 19 Nov 2011 16:08:56 +0000 (-0500)
Subject: Add missing patient_write.c
X-Git-Tag: v1.9.1~65
X-Git-Url: http://git.liburcu.org/?a=commitdiff_plain;h=f6da3aa6cc0915f48e849e1c2cad2ed872362754;p=lttng-ust.git

Add missing patient_write.c

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
---

diff --git a/snprintf/patient_write.c b/snprintf/patient_write.c
new file mode 100644
index 00000000..b6620cb2
--- /dev/null
+++ b/snprintf/patient_write.c
@@ -0,0 +1,81 @@
+/*
+ * Copyright (C) 2009  Pierre-Marc Fournier
+ * Copyright (C) 2011  Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301 USA
+ */
+
+/* write() */
+#include <unistd.h>
+
+/* send() */
+#include <sys/types.h>
+#include <sys/socket.h>
+
+#include <errno.h>
+
+#include <share.h>
+
+/*
+ * This write is patient because it restarts if it was incomplete.
+ */
+
+ssize_t patient_write(int fd, const void *buf, size_t count)
+{
+	const char *bufc = (const char *) buf;
+	int result;
+
+	for(;;) {
+		result = write(fd, bufc, count);
+		if (result == -1 && errno == EINTR) {
+			continue;
+		}
+		if (result <= 0) {
+			return result;
+		}
+		count -= result;
+		bufc += result;
+
+		if (count == 0) {
+			break;
+		}
+	}
+
+	return bufc-(const char *)buf;
+}
+
+ssize_t patient_send(int fd, const void *buf, size_t count, int flags)
+{
+	const char *bufc = (const char *) buf;
+	int result;
+
+	for(;;) {
+		result = send(fd, bufc, count, flags);
+		if (result == -1 && errno == EINTR) {
+			continue;
+		}
+		if (result <= 0) {
+			return result;
+		}
+		count -= result;
+		bufc += result;
+
+		if (count == 0) {
+			break;
+		}
+	}
+
+	return bufc - (const char *) buf;
+}