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#include "tensorflow/core/framework/resource_mgr.h"
#include "tensorflow/core/framework/node_def_util.h"
#include "tensorflow/core/framework/op_kernel.h"
#include "tensorflow/core/lib/core/errors.h"
#include "tensorflow/core/lib/gtl/map_util.h"
#include "tensorflow/core/platform/regexp.h"
namespace tensorflow {
ResourceMgr::ResourceMgr() : default_container_("localhost") {}
ResourceMgr::ResourceMgr(const string& default_container)
: default_container_(default_container) {}
ResourceMgr::~ResourceMgr() { Clear(); }
void ResourceMgr::Clear() {
mutex_lock l(mu_);
for (const auto& p : containers_) {
for (const auto& q : *p.second) {
q.second->Unref();
}
delete p.second;
}
containers_.clear();
}
Status ResourceMgr::DoCreate(const string& container, std::type_index type,
const string& name, ResourceBase* resource) {
{
mutex_lock l(mu_);
Container** b = &containers_[container];
if (*b == nullptr) {
*b = new Container;
}
if ((*b)->insert({{type, name}, resource}).second) {
return Status::OK();
}
}
resource->Unref();
return errors::AlreadyExists("Resource ", container, "/", name, "/",
type.name());
}
Status ResourceMgr::DoLookup(const string& container, std::type_index type,
const string& name,
ResourceBase** resource) const {
mutex_lock l(mu_);
const Container* b = gtl::FindPtrOrNull(containers_, container);
if (b == nullptr) {
return errors::NotFound("Container ", container, " does not exist.");
}
auto r = gtl::FindPtrOrNull(*b, {type, name});
if (r == nullptr) {
return errors::NotFound("Resource ", container, "/", name, "/", type.name(),
" does not exist.");
}
*resource = const_cast<ResourceBase*>(r);
(*resource)->Ref();
return Status::OK();
}
Status ResourceMgr::DoDelete(const string& container, std::type_index type,
const string& name) {
ResourceBase* base = nullptr;
{
mutex_lock l(mu_);
Container* b = gtl::FindPtrOrNull(containers_, container);
if (b == nullptr) {
return errors::NotFound("Container ", container, " does not exist.");
}
auto iter = b->find({type, name});
if (iter == b->end()) {
return errors::NotFound("Resource ", container, "/", name, "/",
type.name(), " does not exist.");
}
base = iter->second;
b->erase(iter);
}
CHECK(base != nullptr);
base->Unref();
return Status::OK();
}
Status ResourceMgr::Cleanup(const string& container) {
Container* b = nullptr;
{
mutex_lock l(mu_);
auto iter = containers_.find(container);
if (iter == containers_.end()) {
return errors::NotFound("Container ", container, " does not exist.");
}
b = iter->second;
containers_.erase(iter);
}
CHECK(b != nullptr);
for (const auto& p : *b) {
p.second->Unref();
}
delete b;
return Status::OK();
}
Status ContainerInfo::Init(ResourceMgr* rmgr, const NodeDef& ndef,
bool use_node_name_as_default) {
CHECK(rmgr);
rmgr_ = rmgr;
string attr_container;
TF_RETURN_IF_ERROR(GetNodeAttr(ndef, "container", &attr_container));
static RE2 container_re("[A-Za-z0-9.][A-Za-z0-9_.\\-/]*");
if (!attr_container.empty() &&
!RE2::FullMatch(attr_container, container_re)) {
return errors::InvalidArgument("container contains invalid characters: ",
attr_container);
}
string attr_shared_name;
TF_RETURN_IF_ERROR(GetNodeAttr(ndef, "shared_name", &attr_shared_name));
if (!attr_shared_name.empty() && (attr_shared_name[0] == '_')) {
return errors::InvalidArgument("shared_name cannot start with '_':",
attr_shared_name);
}
if (!attr_container.empty()) {
container_ = attr_container;
} else {
container_ = rmgr_->default_container();
}
if (!attr_shared_name.empty()) {
name_ = attr_shared_name;
} else if (use_node_name_as_default) {
name_ = ndef.name();
} else {
resource_is_private_to_kernel_ = true;
static std::atomic<int64> counter(0);
name_ = strings::StrCat("_", counter.fetch_add(1), "_", ndef.name());
}
return Status::OK();
}
string ContainerInfo::DebugString() const {
return strings::StrCat("[", container(), ",", name(), ",",
resource_is_private_to_kernel() ? "private" : "public",
"]");
}
} // end namespace tensorflow
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