From 7475fd7f960ccae454d7d6cd7489b72fe6400466 Mon Sep 17 00:00:00 2001
From: randomdan <randomdan@localhost>
Date: Mon, 19 May 2014 13:36:41 +0000
Subject: Asynchronously call getattr for directory entries on readdir and
 cache them for likely client getattr call

---
 netfs/fuse/fuse.cpp     |  4 ++++
 netfs/fuse/fuse.h       |  4 ++++
 netfs/fuse/fuseDirs.cpp | 13 ++++++++++++-
 netfs/fuse/fuseMisc.cpp |  8 +++++++-
 4 files changed, 27 insertions(+), 2 deletions(-)

diff --git a/netfs/fuse/fuse.cpp b/netfs/fuse/fuse.cpp
index d9d49fc..3d14d1c 100644
--- a/netfs/fuse/fuse.cpp
+++ b/netfs/fuse/fuse.cpp
@@ -3,6 +3,10 @@
 #include <boost/foreach.hpp>
 #include "fuse.h"
 #include "lockHelpers.h"
+#include "cache.impl.h"
+
+template class Cache<struct stat, std::string, IceUtil::Shared, IceUtil::Handle<Cacheable<struct stat, std::string, IceUtil::Shared>>>;
+template class OptimisticCallCacheable<struct stat, std::string, IceUtil::Shared>;
 
 NetFS::FuseApp::FuseApp(int & argc, char ** argv) :
 	_argc(argc),
diff --git a/netfs/fuse/fuse.h b/netfs/fuse/fuse.h
index a271630..d95dec4 100644
--- a/netfs/fuse/fuse.h
+++ b/netfs/fuse/fuse.h
@@ -7,6 +7,7 @@
 #include "fuseapp.h"
 #include "fuseConfig.h"
 #include "entCache.h"
+#include "cache.h"
 
 namespace NetFS {
 	class FuseApp : public FuseAppBase {
@@ -107,6 +108,9 @@ namespace NetFS {
 			int openDirID;
 			OpenFiles openFiles;
 			int openFileID;
+
+			typedef Cache<struct stat, std::string, IceUtil::Shared, IceUtil::Handle<Cacheable<struct stat, std::string, IceUtil::Shared>>> StatCache;
+			StatCache statCache;
 	};
 }
 
diff --git a/netfs/fuse/fuseDirs.cpp b/netfs/fuse/fuseDirs.cpp
index e09b68b..35aad94 100644
--- a/netfs/fuse/fuseDirs.cpp
+++ b/netfs/fuse/fuseDirs.cpp
@@ -2,6 +2,7 @@
 #include "fuse.h"
 #include "misc.h"
 #include "lockHelpers.h"
+#include <typeConvert.h>
 
 NetFS::FuseApp::OpenDir::OpenDir(DirectoryPrx r, const std::string & p) :
 	remote(r),
@@ -63,13 +64,23 @@ NetFS::FuseApp::releasedir(const char *, struct fuse_file_info * fi)
 }
 
 int
-NetFS::FuseApp::readdir(const char *, void * buf, fuse_fill_dir_t filler, off_t, struct fuse_file_info * fi)
+NetFS::FuseApp::readdir(const char * p, void * buf, fuse_fill_dir_t filler, off_t, struct fuse_file_info * fi)
 {
 	try {
 		auto remote = getDirProxy(fi->fh)->remote;
 		NetFS::NameList ds = remote->readdir();
+		std::string path(p);
+		NetFS::VolumePrx vc = volume;
 		BOOST_FOREACH(const auto & e, ds) {
 			filler(buf, e.c_str(), NULL, 0);
+			std::string epath = path + "/" + e;
+			auto asga = volume->begin_getattr(reqEnv(), epath);
+			statCache.Add(new OptimisticCallCacheable<struct stat, std::string, IceUtil::Shared>(
+						[asga,this]() {
+							struct stat s;
+							s << AttrSource { volume->end_getattr(asga), boost::bind(&UserEntCache::getID, &uentries, _1), boost::bind(&GroupEntCache::getID, &gentries, _1) };
+							return s;
+						}, epath, time_t(NULL) + 2));
 		}
 		return 0;
 	}
diff --git a/netfs/fuse/fuseMisc.cpp b/netfs/fuse/fuseMisc.cpp
index 568cf52..1eecdd4 100644
--- a/netfs/fuse/fuseMisc.cpp
+++ b/netfs/fuse/fuseMisc.cpp
@@ -13,7 +13,13 @@ int
 NetFS::FuseApp::getattr(const char * p, struct stat * s)
 {
 	try {
-		*s << AttrSource { volume->getattr(reqEnv(), p), boost::bind(&UserEntCache::getID, &uentries, _1), boost::bind(&GroupEntCache::getID, &gentries, _1) };
+		auto cacehedStat = statCache.Get(p);
+		if (cacehedStat) {
+			*s = *cacehedStat;
+		}
+		else {
+			*s << AttrSource { volume->getattr(reqEnv(), p), boost::bind(&UserEntCache::getID, &uentries, _1), boost::bind(&GroupEntCache::getID, &gentries, _1) };
+		}
 		return 0;
 	}
 	catch (NetFS::SystemError & e) {
-- 
cgit v1.2.3