From: Michael Vrable <mvrable@cs.ucsd.edu>
Date: Wed, 7 Apr 2010 22:36:58 +0000 (-0700)
Subject: Cleanups while workign on Samba code.
X-Git-Url: https://git.vrable.net/?a=commitdiff_plain;h=ebdb5ef23b8e152a4793d5927b5d92d7e7b2cc4f;p=bluesky.git

Cleanups while workign on Samba code.
---

diff --git a/bluesky/bluesky.h b/bluesky/bluesky.h
index ff2bf23..29d9a62 100644
--- a/bluesky/bluesky.h
+++ b/bluesky/bluesky.h
@@ -264,6 +264,8 @@ typedef struct {
 BlueSkyFS *bluesky_init_fs(gchar *name, BlueSkyStore *store);
 void bluesky_superblock_flush(BlueSkyFS *fs);
 
+gboolean bluesky_inode_is_ready(BlueSkyInode *inode);
+
 int64_t bluesky_get_current_time();
 void bluesky_inode_update_ctime(BlueSkyInode *inode, gboolean update_mtime);
 uint64_t bluesky_fs_alloc_inode(BlueSkyFS *fs);
@@ -298,6 +300,7 @@ gint bluesky_dirent_compare(gconstpointer a, gconstpointer b,
 void bluesky_flushd_invoke(BlueSkyFS *fs);
 void bluesky_flushd_invoke_conditional(BlueSkyFS *fs);
 void bluesky_inode_do_sync(BlueSkyInode *inode);
+void bluesky_flushd_thread_launch(BlueSkyFS *fs);
 
 void bluesky_debug_dump(BlueSkyFS *fs);
 
diff --git a/bluesky/cache.c b/bluesky/cache.c
index 72c181a..00d0fec 100644
--- a/bluesky/cache.c
+++ b/bluesky/cache.c
@@ -295,3 +295,22 @@ void bluesky_flushd_invoke_conditional(BlueSkyFS *fs)
 
     bluesky_flushd_invoke(fs);
 }
+
+/* Start a perpetually-running thread that flushes the cache occasionally. */
+static gpointer flushd_thread(BlueSkyFS *fs)
+{
+    while (TRUE) {
+        bluesky_flushd_invoke(fs);
+        struct timespec delay;
+        delay.tv_sec = 2;
+        delay.tv_nsec = 0;
+        nanosleep(&delay, NULL);
+    }
+
+    return NULL;
+}
+
+void bluesky_flushd_thread_launch(BlueSkyFS *fs)
+{
+    g_thread_create((GThreadFunc)flushd_thread, fs, FALSE, NULL);
+}
diff --git a/bluesky/util.c b/bluesky/util.c
index bd5ddd3..3ac6596 100644
--- a/bluesky/util.c
+++ b/bluesky/util.c
@@ -36,6 +36,20 @@ gchar *bluesky_lowercase(const gchar *s)
     return g_ascii_strdown(s, -1);
 }
 
+gboolean bluesky_inode_is_ready(BlueSkyInode *inode)
+{
+    if (inode == NULL)
+        return FALSE;
+
+    g_mutex_lock(inode->lock);
+    gboolean valid = (inode->type != BLUESKY_PENDING
+                      && inode->type != BLUESKY_INVALID);
+
+    g_mutex_unlock(inode->lock);
+
+    return valid;
+}
+
 /**** Reference-counted strings. ****/
 
 /* Create and return a new reference-counted string.  The reference count is
diff --git a/s3bench/results/readlatency/repeated-reads.cdf b/s3bench/results/readlatency/repeated-reads.cdf
new file mode 100644
index 0000000..258bee5
--- /dev/null
+++ b/s3bench/results/readlatency/repeated-reads.cdf
@@ -0,0 +1,184 @@
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