Add src/core/bpf_perf_buffer

src/core/bpf_perf_buffer.h

@@ -0,0 +1,28 @@
+#ifndef PYLIBBPF_BPF_PERF_BUFFER_H
+#define PYLIBBPF_BPF_PERF_BUFFER_H
+
+#include <libbpf.h>
+#include <pybind11/pybind11.h>
+#include <pybind11/functional.h>
+
+namespace py = pybind11;
+
+class BpfPerfBuffer {
+private:
+    struct perf_buffer *pb_;
+    py::function callback_;
+    py::function lost_callback_;
+
+    // Static callback wrappers for C API
+    static void sample_callback_wrapper(void *ctx, int cpu, void *data, unsigned int size);
+    static void lost_callback_wrapper(void *ctx, int cpu, unsigned long long cnt);
+
+public:
+    BpfPerfBuffer(int map_fd, int page_cnt, py::function callback, py::object lost_callback);
+    ~BpfPerfBuffer();
+
+    int poll(int timeout_ms);
+    int consume();
+};
+
+#endif // PYLIBBPF_BPF_PERF_BUFFER_H