Inital commit

src/llama-mmap.h

@@ -0,0 +1,76 @@
+#pragma once
+
+#include <cstdint>
+#include <memory>
+#include <vector>
+#include <cstdio>
+
+struct llama_file;
+struct llama_mmap;
+struct llama_mlock;
+
+using llama_files  = std::vector<std::unique_ptr<llama_file>>;
+using llama_mmaps  = std::vector<std::unique_ptr<llama_mmap>>;
+using llama_mlocks = std::vector<std::unique_ptr<llama_mlock>>;
+
+struct llama_file {
+    llama_file(const char * fname, const char * mode, bool use_direct_io = false);
+    llama_file(FILE * file);
+    ~llama_file();
+
+    size_t tell() const;
+    size_t size() const;
+
+    int file_id() const; // fileno overload
+
+    void seek(size_t offset, int whence) const;
+
+    void read_raw(void * ptr, size_t len);
+    void read_raw_unsafe(void * ptr, size_t len);
+    void read_at(void * ptr, size_t len, size_t offset);
+    void set_no_cache() const;
+    void read_aligned_chunk(void * dest, size_t size);
+    uint32_t read_u32();
+
+    void write_raw(const void * ptr, size_t len) const;
+    void write_u32(uint32_t val) const;
+
+    size_t read_alignment() const;
+    bool has_direct_io() const;
+private:
+    struct impl;
+    std::unique_ptr<impl> pimpl;
+};
+
+struct llama_mmap {
+    llama_mmap(const llama_mmap &) = delete;
+    llama_mmap(struct llama_file * file, size_t prefetch = (size_t) -1, bool numa = false);
+    ~llama_mmap();
+
+    size_t size() const;
+    void * addr() const;
+
+    void unmap_fragment(size_t first, size_t last);
+
+    static const bool SUPPORTED;
+
+private:
+    struct impl;
+    std::unique_ptr<impl> pimpl;
+};
+
+struct llama_mlock {
+    llama_mlock();
+    ~llama_mlock();
+
+    void init(void * ptr);
+    void grow_to(size_t target_size);
+
+    static const bool SUPPORTED;
+
+private:
+    struct impl;
+    std::unique_ptr<impl> pimpl;
+};
+
+size_t llama_path_max();