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author | Daniel Wilhelm <daniel@wili.li> | 2014-04-18 17:26:50 +0200 |
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committer | Daniel Wilhelm <daniel@wili.li> | 2014-04-18 17:26:50 +0200 |
commit | 669df123648aaa6aeccc70206b5417bc48b4e9ae (patch) | |
tree | 463c107a8d6405020bb304f7a7253e6b64afeee0 /RealtimeSync/watcher.cpp | |
parent | 5.18 (diff) | |
download | FreeFileSync-669df123648aaa6aeccc70206b5417bc48b4e9ae.tar.gz FreeFileSync-669df123648aaa6aeccc70206b5417bc48b4e9ae.tar.bz2 FreeFileSync-669df123648aaa6aeccc70206b5417bc48b4e9ae.zip |
5.19
Diffstat (limited to 'RealtimeSync/watcher.cpp')
-rw-r--r-- | RealtimeSync/watcher.cpp | 202 |
1 files changed, 0 insertions, 202 deletions
diff --git a/RealtimeSync/watcher.cpp b/RealtimeSync/watcher.cpp deleted file mode 100644 index 6ef5e924..00000000 --- a/RealtimeSync/watcher.cpp +++ /dev/null @@ -1,202 +0,0 @@ -// ************************************************************************** -// * This file is part of the FreeFileSync project. It is distributed under * -// * GNU General Public License: http://www.gnu.org/licenses/gpl.html * -// * Copyright (C) Zenju (zenju AT gmx DOT de) - All Rights Reserved * -// ************************************************************************** - -#include "watcher.h" -#include <set> -#include <zen/tick_count.h> -#include <zen/file_handling.h> -#include <zen/stl_tools.h> -#include <zen/dir_watcher.h> -#include <zen/thread.h> -#include <zen/assert_static.h> -#include <zen/tick_count.h> -#include <wx+/string_conv.h> -#include "../lib/resolve_path.h" -//#include "../library/db_file.h" //SYNC_DB_FILE_ENDING -> complete file too much of a dependency; file ending too little to decouple into single header -//#include "../library/lock_holder.h" //LOCK_FILE_ENDING - -using namespace zen; - - -namespace -{ -const std::int64_t TICKS_UPDATE_INTERVAL = rts::UI_UPDATE_INTERVAL* ticksPerSec() / 1000; -TickVal lastExec = getTicks(); -}; - -bool rts::updateUiIsAllowed() -{ - const TickVal now = getTicks(); //0 on error - if (dist(lastExec, now) >= TICKS_UPDATE_INTERVAL) //perform ui updates not more often than necessary - { - lastExec = now; - return true; - } - return false; -} - - -namespace -{ -const int CHECK_DIR_INTERVAL = 1; //unit: [s] - - -std::vector<Zstring> getFormattedDirs(const std::vector<Zstring>& dirs) //throw FileError -{ - std::set<Zstring, LessFilename> tmp; //make unique - - std::transform(dirs.begin(), dirs.end(), std::inserter(tmp, tmp.end()), - [](const Zstring& dirnameNonFmt) { return getFormattedDirectoryName(dirnameNonFmt); }); - - return std::vector<Zstring>(tmp.begin(), tmp.end()); -} -} - - -rts::WaitResult rts::waitForChanges(const std::vector<Zstring>& dirNamesNonFmt, WaitCallback& statusHandler) //throw FileError -{ - const std::vector<Zstring> dirNamesFmt = getFormattedDirs(dirNamesNonFmt); //throw FileError - if (dirNamesFmt.empty()) //pathological case, but we have to check else this function will wait endlessly - throw zen::FileError(_("A folder input field is empty.")); //should have been checked by caller! - - //detect when volumes are removed/are not available anymore - std::vector<std::pair<Zstring, std::shared_ptr<DirWatcher>>> watches; - - for (auto it = dirNamesFmt.begin(); it != dirNamesFmt.end(); ++it) - { - const Zstring& dirnameFmt = *it; - try - { - //a non-existent network path may block, so check existence asynchronously! - auto ftDirExists = async([=] { return zen::dirExists(dirnameFmt); }); - while (!ftDirExists.timed_wait(boost::posix_time::milliseconds(UI_UPDATE_INTERVAL / 2))) - statusHandler.requestUiRefresh(); //may throw! - if (!ftDirExists.get()) - return WaitResult(dirnameFmt); - - watches.push_back(std::make_pair(dirnameFmt, std::make_shared<DirWatcher>(dirnameFmt))); //throw FileError, ErrorNotExisting - } - catch (ErrorNotExisting&) //nice atomic behavior: *no* second directory existence check!!! - { - return WaitResult(dirnameFmt); - } - catch (FileError&) //play safe: remedy potential FileErrors that should have been ErrorNotExisting (e.g. Linux: errors during directory traversing) - { - if (!dirExists(dirnameFmt)) //file system race condition!! - return WaitResult(dirnameFmt); - throw; - } - } - - const std::int64_t TICKS_DIR_CHECK_INTERVAL = CHECK_DIR_INTERVAL * ticksPerSec(); //0 on error - TickVal lastCheck = getTicks(); //0 on error - while (true) - { - const bool checkDirExistNow = [&]() -> bool //checking once per sec should suffice - { - const TickVal now = getTicks(); //0 on error - if (dist(lastCheck, now) >= TICKS_DIR_CHECK_INTERVAL) - { - lastCheck = now; - return true; - } - return false; - }(); - - - for (auto it = watches.begin(); it != watches.end(); ++it) - { - const Zstring& dirname = it->first; - DirWatcher& watcher = *(it->second); - - //IMPORTANT CHECK: dirwatcher has problems detecting removal of top watched directories! - if (checkDirExistNow) - if (!dirExists(dirname)) //catch errors related to directory removal, e.g. ERROR_NETNAME_DELETED - return WaitResult(dirname); - - try - { - std::vector<DirWatcher::Entry> changedItems = watcher.getChanges([&] { statusHandler.requestUiRefresh(); }); //throw FileError, ErrorNotExisting - - //remove to be ignored changes - vector_remove_if(changedItems, [](const DirWatcher::Entry& e) - { - return endsWith(e.filename_, Zstr(".ffs_lock")) || //sync.ffs_lock, sync.Del.ffs_lock - endsWith(e.filename_, Zstr(".ffs_db")); //sync.ffs_db, .sync.tmp.ffs_db - //no need to ignore temporal recycle bin directory: this must be caused by a file deletion anyway - }); - - if (!changedItems.empty()) - { - /* - std::for_each(changedItems.begin(), changedItems.end(), - [](const Zstring& fn) { wxMessageBox(toWx(fn));}); - */ - return WaitResult(changedItems[0]); //directory change detected - } - - } - catch (ErrorNotExisting&) //nice atomic behavior: *no* second directory existence check!!! - { - return WaitResult(dirname); - } - catch (FileError&) //play safe: remedy potential FileErrors that should have been ErrorNotExisting (e.g. Linux: errors during directory traversing) - { - if (!dirExists(dirname)) //file system race condition!! - return WaitResult(dirname); - throw; - } - } - - boost::this_thread::sleep(boost::posix_time::milliseconds(rts::UI_UPDATE_INTERVAL / 2)); - statusHandler.requestUiRefresh(true); //throw ?: may start sync at this presumably idle time - } -} - - -//support for monitoring newly connected directories volumes (e.g.: USB-sticks) -void rts::waitForMissingDirs(const std::vector<Zstring>& dirNamesNonFmt, WaitCallback& statusHandler) //throw FileError -{ - while (true) - { - //support specifying volume by name => call getFormattedDirectoryName() repeatedly - const std::vector<Zstring>& dirNamesFmt = getFormattedDirs(dirNamesNonFmt); //throw FileError - - bool allExisting = true; - for (auto it = dirNamesFmt.begin(); it != dirNamesFmt.end(); ++it) - { - const Zstring dirnameFmt = *it; - auto ftDirExisting = async([=]() -> bool - { -#ifdef ZEN_WIN - //1. login to network share, if necessary -> we probably do NOT want multiple concurrent runs: GUI!? - loginNetworkShare(dirnameFmt, false); //login networks shares, no PW prompt -> is this really RTS's job? -#endif - //2. check dir existence - return zen::dirExists(dirnameFmt); - }); - while (!ftDirExisting.timed_wait(boost::posix_time::milliseconds(rts::UI_UPDATE_INTERVAL / 2))) - statusHandler.requestUiRefresh(); //may throw! - - if (!ftDirExisting.get()) - { - allExisting = false; - break; - } - } - if (allExisting) - return; - - //wait some time... - const int refreshInterval = UI_UPDATE_INTERVAL / 2; - assert_static(1000 * CHECK_DIR_INTERVAL % refreshInterval == 0); - for (int i = 0; i < 1000 * CHECK_DIR_INTERVAL / refreshInterval; ++i) - { - boost::this_thread::sleep(boost::posix_time::milliseconds(refreshInterval)); - statusHandler.requestUiRefresh(); - } - } -} |