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#pragma once
#include <mbgl/storage/file_source.hpp>
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wunused-parameter"
#pragma GCC diagnostic ignored "-Wshadow"
#pragma GCC diagnostic ignored "-Wnested-anon-types"
#include <nan.h>
#pragma GCC diagnostic pop
#include <unordered_map>
#include <mutex>
namespace mbgl {
namespace util { template <typename T> class AsyncQueue; }
class NodeFileSource : public FileSource {
public:
NodeFileSource(v8::Local<v8::Object>);
~NodeFileSource() override;
// FileSource API
Request* request(const Resource&, uv_loop_t*, Callback) override;
void cancel(Request*) override;
void notify(const Resource&, const std::shared_ptr<const Response>&);
private:
Nan::Persistent<v8::Object> options;
struct Action;
using Queue = util::AsyncQueue<Action>;
Queue *queue = nullptr;
void processAdd(const Resource&);
void processCancel(const Resource&);
std::unordered_map<Resource, Nan::Persistent<v8::Object>, Resource::Hash> pending;
// The observers list will hold pointers to all the requests waiting
// for a particular resource. The access must be guarded by a mutex
// because the list is also accessed by a thread from the Map
// object and from the main thread when notifying requests of
// completion. Concurrent access is specially needed when
// canceling a request to avoid a deadlock
// (see https://github.com/mapbox/node-mapbox-gl-native/issues/129).
std::unordered_map<Resource, Request*, Resource::Hash> observers;
std::mutex observersMutex;
};
}
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