stew

commit e0f2a2ec14bd86f158061c82b76ccfa30b7455f0
parent e008618784c381cb217148b22a8f0a7b3577a298
Author: glenda <glenda@device>
Date:   Mon, 24 Oct 2022 21:31:22 +0000

add src/bench

Diffstat:
A
src/bench/mkfile
 | 
5
+++++
A
src/bench/reader.c
 | 
13
+++++++++++++
A
src/bench/writer.c
 | 
18
++++++++++++++++++

3 files changed, 36 insertions(+), 0 deletions(-)
diff --git a/src/bench/mkfile b/src/bench/mkfile
@@ -0,0 +1,5 @@
+</$objtype/mkfile
+BIN=.
+TARG=reader writer
+
+</sys/src/cmd/mkmany
diff --git a/src/bench/reader.c b/src/bench/reader.c
@@ -0,0 +1,13 @@
+#include <u.h>
+#include <libc.h>
+#define BSize (1024 * 1024 * 64)
+void
+main(void)
+{
+	long n;
+	char *buf = malloc(BSize);
+	while ((n = read(0, buf, BSize)) > 0) {
+		fprint(2, "reader: %ld/%d\n", n, BSize);
+	}
+	if (n < 0) sysfatal("%r");
+}
diff --git a/src/bench/writer.c b/src/bench/writer.c
@@ -0,0 +1,18 @@
+#include <u.h>
+#include <libc.h>
+#define BSize (1024 * 1024 * 64)
+void
+main(void)
+{
+	int i;
+	long n;
+	n = 1;
+	char *buf = malloc(BSize);
+	fprint(2, "writer begin\n");
+	for (i = 0; (i < 8) && (n > 0); i++) {
+		n = write(1, buf, BSize);
+		fprint(2, "writer: %ld/%d\n", n, BSize);
+	}
+	if (n < 0) sysfatal("%r");
+	fprint(2, "writer end, %d\n", i);
+}