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HTTPRepo: Fix ownership of HTTPDirectory

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This commit is contained in:
James Turner 2020-08-22 21:27:38 +01:00
parent 3298260f11
commit 8b14e56f88
1 changed files with 13 additions and 24 deletions
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37
simgear/io/HTTPRepository.cxx
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@ -49,6 +49,7 @@ namespace simgear
{
class HTTPDirectory;
using HTTPDirectory_ptr = std::unique_ptr<HTTPDirectory>;
class HTTPRepoGetRequest : public HTTP::Request
{
@ -137,7 +138,7 @@ public:
SGPath basePath;
bool isUpdating;
HTTPRepository::ResultCode status;
HTTPDirectory* rootDir;
HTTPDirectory_ptr rootDir;
size_t totalDownloaded;
HTTP::Request_ptr updateFile(HTTPDirectory* dir, const std::string& name,
@ -165,7 +166,7 @@ public:
HTTPDirectory* getOrCreateDirectory(const std::string& path);
bool deleteDirectory(const std::string& relPath, const SGPath& absPath);
typedef std::vector<HTTPDirectory*> DirectoryVector;
typedef std::vector<HTTPDirectory_ptr> DirectoryVector;
DirectoryVector directories;
SGPath installedCopyPath;
@ -597,7 +598,7 @@ private:
void removeChild(SGPath path)
{
bool ok;
SG_LOG(SG_TERRASYNC, SG_WARN, "Removing:" << path);
SG_LOG(SG_TERRASYNC, SG_INFO, "Removing:" << path);
std::string fpath = _relativePath + "/" + path.file();
if (path.isDir()) {
@ -631,14 +632,7 @@ HTTPRepository::HTTPRepository(const SGPath& base, HTTP::Client *cl) :
{
_d->http = cl;
_d->basePath = base;
// REVIEW: Memory Leak - 885,598 (3,072 direct, 882,526 indirect) bytes in 48 blocks are definitely lost
// _d->rootDir should be changed to a shared_ptr
// this object is passed to several chained methods, so destruction within ~HTTPRepoPrivate may be
// an easier fix assuming sole ownership would apply
// REVIEW: _d is only partially initialized when it is being passed to the HTTPDirectory ctor.
// The HTTPDirectory object is taking ownership of the shared HTTPRepoPrivate object.
// Mismatch between _d being a unique_ptr, yet also cloned into HTTPDirectory.
_d->rootDir = new HTTPDirectory(_d.get(), "");
_d->rootDir.reset(new HTTPDirectory(_d.get(), ""));
_d->parseHashCache();
}
@ -675,7 +669,7 @@ void HTTPRepository::update()
_d->status = REPO_NO_ERROR;
_d->isUpdating = true;
_d->failures.clear();
_d->updateDir(_d->rootDir, std::string(), 0);
_d->updateDir(_d->rootDir.get(), {}, 0);
}
bool HTTPRepository::isDoingSync() const
@ -943,10 +937,7 @@ HTTPRepository::failure() const
http->cancelRequest(*rq, "Repository object deleted");
}
DirectoryVector::iterator it;
for (it=directories.begin(); it != directories.end(); ++it) {
delete *it;
}
directories.clear(); // wil delete them all
}
HTTP::Request_ptr HTTPRepoPrivate::updateFile(HTTPDirectory* dir, const std::string& name, size_t sz)
@ -1109,7 +1100,7 @@ HTTPRepository::failure() const
{
public:
DirectoryWithPath(const std::string& p) : path(p) {}
bool operator()(const HTTPDirectory* entry) const
bool operator()(const HTTPDirectory_ptr& entry) const
{ return entry->relativePath() == path; }
private:
std::string path;
@ -1118,14 +1109,13 @@ HTTPRepository::failure() const
HTTPDirectory* HTTPRepoPrivate::getOrCreateDirectory(const std::string& path)
{
DirectoryWithPath p(path);
DirectoryVector::iterator it = std::find_if(directories.begin(), directories.end(), p);
auto it = std::find_if(directories.begin(), directories.end(), p);
if (it != directories.end()) {
return *it;
return it->get();
}
HTTPDirectory* d = new HTTPDirectory(this, path);
directories.push_back(d);
return d;
directories.emplace_back(new HTTPDirectory(this, path));
return directories.back().get();
}
bool HTTPRepoPrivate::deleteDirectory(const std::string& relPath, const SGPath& absPath)
@ -1133,10 +1123,9 @@ HTTPRepository::failure() const
DirectoryWithPath p(relPath);
auto it = std::find_if(directories.begin(), directories.end(), p);
if (it != directories.end()) {
HTTPDirectory* d = *it;
HTTPDirectory* d = it->get();
assert(d->absolutePath() == absPath);
directories.erase(it);
delete d;
} else {
// we encounter this code path when deleting an orphaned directory
}