From 77a7d13b3954c7953a1df841bbf4c5398423df8a Mon Sep 17 00:00:00 2001
From: rakshasa <sundell.software@gmail.com>
Date: Tue, 1 Jan 2008 14:13:14 +0000
Subject: [PATCH] * Automatically prune the file status cache every day.

git-svn-id: svn://rakshasa.no/libtorrent/trunk/rtorrent@1025 e378c898-3ddf-0310-93e7-cc216c733640
---
 src/command_local.cc           |  4 ++++
 src/main.cc                    |  1 +
 src/utils/file_status_cache.cc | 13 +++++++++++++
 src/utils/file_status_cache.h  |  7 +++----
 4 files changed, 21 insertions(+), 4 deletions(-)

diff --git a/src/command_local.cc b/src/command_local.cc
index 45bd0f7d..679dbb2f 100644
--- a/src/command_local.cc
+++ b/src/command_local.cc
@@ -51,6 +51,7 @@
 #include "rpc/command_slot.h"
 #include "rpc/command_variable.h"
 #include "rpc/parse_commands.h"
+#include "utils/file_status_cache.h"
 
 #include "globals.h"
 #include "control.h"
@@ -127,6 +128,9 @@ initialize_command_local() {
   ADD_COMMAND_VOID("system.hostname",            rak::ptr_fun(&system_hostname));
   ADD_COMMAND_VOID("system.pid",                 rak::ptr_fun(&getpid));
 
+  ADD_COMMAND_VOID("system.file_status_cache.size",  rak::make_mem_fun((utils::FileStatusCache::base_type*)control->core()->file_status_cache(), &utils::FileStatusCache::size));
+  ADD_COMMAND_VOID("system.file_status_cache.prune", rak::make_mem_fun(control->core()->file_status_cache(), &utils::FileStatusCache::prune));
+
   ADD_COMMAND_VALUE_SET_OCT("system.", "umask",  std::ptr_fun(&umask));
   ADD_COMMAND_STRING_PREFIX("system.", "cwd",    std::ptr_fun(system_set_cwd), rak::ptr_fun(&system_get_cwd));
 
diff --git a/src/main.cc b/src/main.cc
index 78079d93..db60207a 100644
--- a/src/main.cc
+++ b/src/main.cc
@@ -236,6 +236,7 @@ main(int argc, char** argv) {
 
        "schedule = session_save,1800,1800,session_save=\n"
        "schedule = low_diskspace,5,60,close_low_diskspace=500M\n"
+       "schedule = prune_file_status,3600,86400,system.file_status_cache.prune=\n"
 
        "encryption=allow_incoming,prefer_plaintext,enable_retry\n"
     );
diff --git a/src/utils/file_status_cache.cc b/src/utils/file_status_cache.cc
index d8fd3009..92c550ac 100644
--- a/src/utils/file_status_cache.cc
+++ b/src/utils/file_status_cache.cc
@@ -68,4 +68,17 @@ FileStatusCache::insert(const std::string& path, int flags) {
   return true;
 }
 
+void
+FileStatusCache::prune() {
+  iterator itr = begin();
+
+  while (itr != end()) {
+    rak::file_stat fs;
+    iterator tmp = itr++;
+
+    if (!fs.update(rak::path_expand(tmp->first)) || tmp->second.m_mtime != (uint32_t)fs.modified_time())
+      base_type::erase(tmp);
+  }
+}
+
 }
diff --git a/src/utils/file_status_cache.h b/src/utils/file_status_cache.h
index b9ecf2ab..a2a33e8c 100644
--- a/src/utils/file_status_cache.h
+++ b/src/utils/file_status_cache.h
@@ -73,10 +73,9 @@ public:
 
   // Add a function for pruning a sorted list of paths.
 
-  // Function for removing entries in a container that shouldn't be
-  // there based on some parameters.
-
-  // Function for pruning entries with different mtime or not existing.
+  // Function for pruning entries that no longer points to a file, or
+  // has a different mtime.
+  void                prune();
 };
 
 }