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authorArtem Bityutskiy <Artem.Bityutskiy@nokia.com>2008-02-19 14:54:17 +0200
committerArtem Bityutskiy <Artem.Bityutskiy@nokia.com>2008-02-19 16:41:16 +0200
commit86dd9696d3a1acb036d65909d93d73455b8aed3a (patch)
tree9e8bb6797b3bebd0bf83ae1fab2151a6dfeafe6a /ubi-utils/tests/io_paral.c
parentef644090223e5983ca2492850354c1390e3368d1 (diff)
Revert ubi-tools changes
Restore ubi tools to their "original" state, which means to the state they were before I stareted cleaning them up. Instead, create a "new-utils" subdirectory and move my work there. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Diffstat (limited to 'ubi-utils/tests/io_paral.c')
-rw-r--r--ubi-utils/tests/io_paral.c251
1 files changed, 251 insertions, 0 deletions
diff --git a/ubi-utils/tests/io_paral.c b/ubi-utils/tests/io_paral.c
new file mode 100644
index 0000000..4857bf8
--- /dev/null
+++ b/ubi-utils/tests/io_paral.c
@@ -0,0 +1,251 @@
+/*
+ * Copyright (c) International Business Machines Corp., 2006
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ * Author: Artem B. Bityutskiy
+ *
+ * This test does a lot of I/O to volumes in parallel.
+ */
+
+#include <stdio.h>
+#include <errno.h>
+#include <string.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <pthread.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include "libubi.h"
+#define TESTNAME "io_paral"
+#include "common.h"
+
+#define THREADS_NUM 3
+#define ITERATIONS 100
+
+static libubi_t libubi;
+static struct ubi_dev_info dev_info;
+const char *node;
+static int iterations = ITERATIONS;
+int total_bytes;
+
+static void * the_thread(void *ptr);
+
+static long long memory_limit(void)
+{
+ long long result = 0;
+ FILE *f;
+
+ f = fopen("/proc/meminfo", "r");
+ if (!f)
+ return 0;
+ fscanf(f, "%*s %lld", &result);
+ fclose(f);
+ return result * 1024 / 4;
+}
+
+int main(int argc, char * const argv[])
+{
+ int i, ret;
+ pthread_t threads[THREADS_NUM];
+ struct ubi_mkvol_request req;
+ long long mem_limit;
+
+ if (initial_check(argc, argv))
+ return 1;
+
+ node = argv[1];
+
+ libubi = libubi_open();
+ if (libubi == NULL) {
+ failed("libubi_open");
+ return 1;
+ }
+
+ if (ubi_get_dev_info(libubi, node, &dev_info)) {
+ failed("ubi_get_dev_info");
+ goto close;
+ }
+
+ req.alignment = 1;
+ mem_limit = memory_limit();
+ if (mem_limit && mem_limit < dev_info.avail_bytes)
+ total_bytes = req.bytes =
+ (mem_limit / dev_info.eb_size / THREADS_NUM)
+ * dev_info.eb_size;
+ else
+ total_bytes = req.bytes =
+ ((dev_info.avail_ebs - 3) / THREADS_NUM)
+ * dev_info.eb_size;
+ for (i = 0; i < THREADS_NUM; i++) {
+ char name[100];
+
+ req.vol_id = i;
+ sprintf(&name[0], TESTNAME":%d", i);
+ req.name = &name[0];
+ req.vol_type = (i & 1) ? UBI_STATIC_VOLUME : UBI_DYNAMIC_VOLUME;
+
+ if (ubi_mkvol(libubi, node, &req)) {
+ failed("ubi_mkvol");
+ goto remove;
+ }
+ }
+
+ /* Create one volume with static data to make WL work more */
+ req.vol_id = THREADS_NUM;
+ req.name = TESTNAME ":static";
+ req.vol_type = UBI_DYNAMIC_VOLUME;
+ req.bytes = 3*dev_info.eb_size;
+ if (ubi_mkvol(libubi, node, &req)) {
+ failed("ubi_mkvol");
+ goto remove;
+ }
+
+ for (i = 0; i < THREADS_NUM; i++) {
+ ret = pthread_create(&threads[i], NULL, &the_thread, (void*)i);
+ if (ret) {
+ failed("pthread_create");
+ goto remove;
+ }
+ }
+
+ for (i = 0; i < THREADS_NUM; i++)
+ pthread_join(threads[i], NULL);
+
+ for (i = 0; i <= THREADS_NUM; i++) {
+ if (ubi_rmvol(libubi, node, i)) {
+ failed("ubi_rmvol");
+ goto remove;
+ }
+ }
+
+ libubi_close(libubi);
+ return 0;
+
+remove:
+ for (i = 0; i <= THREADS_NUM; i++)
+ ubi_rmvol(libubi, node, i);
+
+close:
+ libubi_close(libubi);
+ return 1;
+}
+
+/**
+ * the_thread - the testing thread.
+ *
+ * @ptr thread number
+ */
+static void * the_thread(void *ptr)
+{
+ int fd, iter = iterations, vol_id = (int)ptr;
+ unsigned char *wbuf, *rbuf;
+ char vol_node[strlen(UBI_VOLUME_PATTERN) + 100];
+
+ wbuf = malloc(total_bytes);
+ rbuf = malloc(total_bytes);
+ if (!wbuf || !rbuf) {
+ failed("malloc");
+ goto free;
+ }
+
+ sprintf(&vol_node[0], UBI_VOLUME_PATTERN, dev_info.dev_num, vol_id);
+
+ while (iter--) {
+ int i, ret, written = 0, rd = 0;
+ int bytes = (random() % (total_bytes - 1)) + 1;
+
+ fd = open(vol_node, O_RDWR);
+ if (fd == -1) {
+ failed("open");
+ err_msg("cannot open \"%s\"\n", node);
+ goto free;
+ }
+
+ for (i = 0; i < bytes; i++)
+ wbuf[i] = random() % 255;
+ memset(rbuf, '\0', bytes);
+
+ do {
+ ret = ubi_update_start(libubi, fd, bytes);
+ if (ret && errno != EBUSY) {
+ failed("ubi_update_start");
+ err_msg("vol_id %d", vol_id);
+ goto close;
+ }
+ } while (ret);
+
+ while (written < bytes) {
+ int to_write = random() % (bytes - written);
+
+ if (to_write == 0)
+ to_write = 1;
+
+ ret = write(fd, wbuf, to_write);
+ if (ret != to_write) {
+ failed("write");
+ err_msg("failed to write %d bytes at offset %d "
+ "of volume %d", to_write, written,
+ vol_id);
+ err_msg("update: %d bytes", bytes);
+ goto close;
+ }
+
+ written += to_write;
+ }
+
+ close(fd);
+
+ fd = open(vol_node, O_RDONLY);
+ if (fd == -1) {
+ failed("open");
+ err_msg("cannot open \"%s\"\n", node);
+ goto free;
+ }
+
+ /* read data back and check */
+ while (rd < bytes) {
+ int to_read = random() % (bytes - rd);
+
+ if (to_read == 0)
+ to_read = 1;
+
+ ret = read(fd, rbuf, to_read);
+ if (ret != to_read) {
+ failed("read");
+ err_msg("failed to read %d bytes at offset %d "
+ "of volume %d", to_read, rd, vol_id);
+ goto close;
+ }
+
+ rd += to_read;
+ }
+
+ close(fd);
+
+ }
+
+ free(wbuf);
+ free(rbuf);
+ return NULL;
+
+close:
+ close(fd);
+free:
+ free(wbuf);
+ free(rbuf);
+ return NULL;
+}