Create bpf_object.h as a container for the object file having bpf progs and maps

src/core/bpf_object.h

@@ -0,0 +1,76 @@
+#ifndef PYLIBBPF_BPF_OBJECT_H
+#define PYLIBBPF_BPF_OBJECT_H
+
+#include <libbpf.h>
+#include <pybind11/pybind11.h>
+#include <memory>
+#include <string>
+#include <unordered_map>
+#include <vector>
+
+namespace py = pybind11;
+
+class BpfProgram;
+class BpfMap;
+
+/**
+ * BpfObject - Represents a loaded BPF object file.
+ * 
+ * This is the main entry point for loading BPF programs.
+ * Owns the bpf_object* and manages all programs and maps within it.
+ */
+class BpfObject {
+private:
+    struct bpf_object *obj_;
+    std::string object_path_;
+    bool loaded_;
+
+    mutable std::unordered_map<std::string, std::shared_ptr<BpfMap>> maps_cache_;
+    mutable std::unordered_map<std::string, std::shared_ptr<BpfProgram>> prog_cache_;
+
+public:
+    explicit BpfObject(std::string object_path);
+    ~BpfObject();
+    
+    // Disable copy, allow move
+    BpfObject(const BpfObject&) = delete;
+    BpfObject& operator=(const BpfObject&) = delete;
+    BpfObject(BpfObject&&) noexcept;
+    BpfObject& operator=(BpfObject&&) noexcept;
+    
+    /**
+     * Load the BPF object into the kernel.
+     * Must be called before accessing programs or maps.
+     */
+    void load();
+    
+    /**
+     * Check if object is loaded.
+     */
+    [[nodiscard]] bool is_loaded() const { return loaded_; }
+    
+    /**
+     * Get the underlying bpf_object pointer.
+     * Only for internal use by BpfProgram and BpfMap.
+     */
+    [[nodiscard]] struct bpf_object* get_obj() const { return obj_; }
+
+    /**
+     * Attach all programs in the object.
+     */
+    py::dict attach_all();
+    
+    // Program access
+    [[nodiscard]] py::list get_program_names() const;
+    [[nodiscard]] std::shared_ptr<BpfProgram> get_program(const std::string& name);
+    [[nodiscard]] struct bpf_program* find_program_by_name(const std::string& name) const;
+    [[nodiscard]] py::dict get_programs() const;
+    
+    // Map access
+    [[nodiscard]] py::list get_map_names() const;
+    [[nodiscard]] std::shared_ptr<BpfMap> get_map(const std::string& name);
+    [[nodiscard]] struct bpf_map* find_map_by_name(const std::string& name) const;
+    [[nodiscard]] py::dict get_maps() const;
+};
+
+#endif // PYLIBBPF_BPF_OBJECT_H