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//////////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////
//
// copyright : (C) 2014 Eran Ifrah
// file name : clangpch_cache.cpp
//
// -------------------------------------------------------------------------
// A
// _____ _ _ _ _
// / __ \ | | | | (_) |
// | / \/ ___ __| | ___| | _| |_ ___
// | | / _ \ / _ |/ _ \ | | | __/ _ )
// | \__/\ (_) | (_| | __/ |___| | || __/
// \____/\___/ \__,_|\___\_____/_|\__\___|
//
// F i l e
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
//
//////////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////
#if HAS_LIBCLANG
#include "clangpch_cache.h"
#include "file_logger.h"
#include "fileutils.h"
#include <wx/dir.h>
#include <wx/log.h>
#include <wx/stdpaths.h>
ClangTUCache::ClangTUCache()
: m_maxItems(10)
{
}
ClangTUCache::~ClangTUCache() {}
ClangCacheEntry ClangTUCache::GetPCH(const wxString& filename)
{
std::map<wxString, ClangCacheEntry>::iterator iter = m_cache.find(filename);
if(iter == m_cache.end()) { return ClangCacheEntry(); }
// Remove this entry from the cache. It is up to the caller to place it back!
ClangCacheEntry entry = iter->second;
m_cache.erase(iter);
return entry;
}
void ClangTUCache::AddPCH(ClangCacheEntry entry)
{
// See if we already have a cache entry for this file name
std::map<wxString, ClangCacheEntry>::iterator iter = m_cache.find(entry.sourceFile);
if(iter != m_cache.end() && iter->second.TU == entry.TU) {
// the entry in the cache is the same as this one
// Just update the access-time
iter->second.lastAccessed = time(NULL);
return;
}
entry.lastAccessed = time(NULL);
m_cache.insert(std::make_pair(entry.sourceFile, entry));
if(m_cache.size() > m_maxItems) {
CL_DEBUG1(wxT("clang PCH cache size reached its maximum size, removing last accessed entry"));
time_t oldest_timestamp = time(NULL);
// iterate over the cache and remove the oldest item from the cache
std::map<wxString, ClangCacheEntry>::iterator it = m_cache.begin();
wxString key_to_remove;
for(; it != m_cache.end(); it++) {
if(it->second.lastAccessed <= oldest_timestamp) {
key_to_remove = it->first;
oldest_timestamp = it->second.lastAccessed;
}
}
if(key_to_remove.IsEmpty() == false) {
CL_DEBUG(wxT("Removing entry for key: %s"), key_to_remove.c_str());
RemoveEntry(key_to_remove);
}
}
}
void ClangTUCache::Clear()
{
CL_DEBUG(wxT("clang PCH cache cleared!"));
std::map<wxString, ClangCacheEntry>::iterator it = m_cache.begin();
for(; it != m_cache.end(); it++) {
if(it->second.TU) {
CL_DEBUG(wxT("Deleting TU: %p"), (void*)it->second.TU);
clang_disposeTranslationUnit(it->second.TU);
}
}
m_cache.clear();
// Clear the TU from the file system
// if(WorkspaceST::Get()->IsOpen()) {
// wxString clangFileSystemCacheDir;
// clangFileSystemCacheDir << WorkspaceST::Get()->GetWorkspaceFileName().GetPath()
// << wxFileName::GetPathSeparator()
// << wxT(".clang");
// DeleteDirectoryContent(clangFileSystemCacheDir);
//}
}
void ClangTUCache::RemoveEntry(const wxString& filename)
{
std::map<wxString, ClangCacheEntry>::iterator iter = m_cache.find(filename);
if(iter != m_cache.end()) {
CL_DEBUG(wxT("clang_disposeTranslationUnit for TU: %p"), (void*)iter->second.TU);
clang_disposeTranslationUnit(iter->second.TU);
{
wxLogNull nolog;
clRemoveFile(iter->second.fileTU);
}
// it is now safe to erase the iter
m_cache.erase(iter);
}
}
bool ClangTUCache::Contains(const wxString& filename) const { return m_cache.find(filename) != m_cache.end(); }
wxString ClangTUCache::GetTuFileName(const wxString& sourceFile) const
{
std::map<wxString, ClangCacheEntry>::const_iterator iter = m_cache.find(sourceFile);
if(iter != m_cache.end()) return iter->second.fileTU;
return wxT("");
}
void ClangTUCache::DeleteDirectoryContent(const wxString& directory)
{
wxArrayString files;
wxDir::GetAllFiles(directory, &files, wxT("*.TU"));
wxLogNull nolog;
CL_DEBUG(wxT("Clearing clang TU cache from %s"), directory.c_str());
CL_DEBUG(wxT("Total of %d files"), (int)files.GetCount());
for(size_t i = 0; i < files.GetCount(); i++) {
clRemoveFile(files.Item(i));
CL_DEBUG(wxT("Deleting .. %s"), files.Item(i).c_str());
}
}
#endif // HAS_LIBCLANG
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