From f596f1356cc523ace9ae6d2f91f08f982bae455b Mon Sep 17 00:00:00 2001
From: Michael Vrable <mvrable@cs.ucsd.edu>
Date: Sun, 28 Nov 2010 16:21:36 -0800
Subject: [PATCH] More work on request profiling.

---
 bluesky/cloudlog.c |  8 ++++----
 bluesky/file.c     | 34 +++++++++-------------------------
 2 files changed, 13 insertions(+), 29 deletions(-)

diff --git a/bluesky/cloudlog.c b/bluesky/cloudlog.c
index b6ee07f..fb83e02 100644
--- a/bluesky/cloudlog.c
+++ b/bluesky/cloudlog.c
@@ -340,6 +340,10 @@ void bluesky_cloudlog_fetch(BlueSkyCloudLog *log)
     if (log->data != NULL)
         return;
 
+    BlueSkyProfile *profile = bluesky_profile_get();
+    if (profile != NULL)
+        bluesky_profile_add_event(profile, g_strdup_printf("Fetch log entry"));
+
     /* There are actually two cases: a full deserialization if we have not ever
      * read the object before, and a partial deserialization where the metadata
      * is already in memory and we just need to remap the data.  If the object
@@ -353,10 +357,6 @@ void bluesky_cloudlog_fetch(BlueSkyCloudLog *log)
         bluesky_string_unref(raw);
     }
 
-    BlueSkyProfile *profile = bluesky_profile_get();
-    if (profile != NULL)
-        bluesky_profile_add_event(profile, g_strdup_printf("Fetch log entry"));
-
     /* At this point all metadata should be available and we need only remap
      * the object data. */
     log->data = bluesky_log_map_object(log, TRUE);
diff --git a/bluesky/file.c b/bluesky/file.c
index a4a8108..5c4b157 100644
--- a/bluesky/file.c
+++ b/bluesky/file.c
@@ -166,32 +166,10 @@ void bluesky_file_read(BlueSkyInode *inode, uint64_t offset,
     g_return_if_fail(offset < inode->size);
     g_return_if_fail(len <= inode->size - offset);
 
-#if 0
-    /* Start fetches on any data blocks that we will need for this read. */
-    BlueSkyStoreAsync *barrier = bluesky_store_async_new(inode->fs->store);
-    barrier->op = STORE_OP_BARRIER;
-    uint64_t start_block, end_block;
-    start_block = offset / BLUESKY_BLOCK_SIZE;
-    end_block = (offset + len - 1) / BLUESKY_BLOCK_SIZE;
-    if (bluesky_verbose) {
-        g_log("bluesky/file", G_LOG_LEVEL_DEBUG,
-              "Start prefetch on blocks %"PRIi64" .. %"PRIi64,
-              start_block, end_block);
-    }
-    for (uint64_t i = start_block; i <= end_block; i++) {
-        BlueSkyBlock *b = &g_array_index(inode->blocks, BlueSkyBlock,
-                                         i);
-        if (b->type == BLUESKY_BLOCK_REF)
-            bluesky_block_fetch(inode, b, barrier);
-    }
-    bluesky_store_async_submit(barrier);
-    bluesky_store_async_wait(barrier);
-    bluesky_store_async_unref(barrier);
-    if (bluesky_verbose) {
-        g_log("bluesky/file", G_LOG_LEVEL_DEBUG, "Prefetch complete.");
-    }
-#endif
+    BlueSkyProfile *profile = bluesky_profile_get();
 
+    bluesky_profile_add_event(profile,
+                              g_strdup_printf("Start file read prefetch"));
     uint64_t start_block, end_block;
     start_block = offset / BLUESKY_BLOCK_SIZE;
     end_block = (offset + len - 1) / BLUESKY_BLOCK_SIZE;
@@ -202,6 +180,9 @@ void bluesky_file_read(BlueSkyInode *inode, uint64_t offset,
             bluesky_cloudlog_prefetch(b->ref);
     }
 
+    bluesky_profile_add_event(profile,
+                              g_strdup_printf("End file read prefetch"));
+
     while (len > 0) {
         uint64_t block_num = offset / BLUESKY_BLOCK_SIZE;
         gint block_offset = offset % BLUESKY_BLOCK_SIZE;
@@ -226,6 +207,9 @@ void bluesky_file_read(BlueSkyInode *inode, uint64_t offset,
         buf += bytes;
         len -= bytes;
     }
+
+    bluesky_profile_add_event(profile,
+                              g_strdup_printf("BlueSky read complete"));
 }
 
 void bluesky_block_fetch(BlueSkyInode *inode, BlueSkyBlock *block,
-- 
2.20.1