#include <alloca.h>
#include "lib/unaligned.h"
-#include "lib/bbuf.h"
/*
* Generic buffered I/O. You supply hooks to be called for low-level operations
struct fastbuf *bopen_mm(byte *name, uns mode);
+/* FastIO on files opened with O_DIRECT (see fb-direct.c for description) */
+
+struct asio_queue;
+struct fastbuf *fbdir_open(byte *name, uns mode, struct asio_queue *io_queue);
+struct fastbuf *fbdir_open_try(byte *name, uns mode, struct asio_queue *io_queue);
+struct fastbuf *fbdir_open_fd(int fd, struct asio_queue *io_queue);
+struct fastbuf *fbdir_open_tmp(int fd, struct asio_queue *io_queue);
+
/* FastI on file descriptors with limit */
struct fastbuf *bopen_limited_fd(int fd, uns bufsize, uns limit);
void fbgrow_reset(struct fastbuf *b); /* Reset stream and prepare for writing */
void fbgrow_rewind(struct fastbuf *b); /* Prepare for reading */
+/* FastO with atomic writes for multi-threaded programs */
+
+struct fb_atomic {
+ struct fastbuf fb;
+ struct fb_atomic_file *af;
+ byte *expected_max_bptr;
+ uns slack_size;
+};
+#define FB_ATOMIC(f) ((struct fb_atomic *)(f)->is_fastbuf)
+
+struct fastbuf *fbatomic_open(byte *name, struct fastbuf *master, uns bufsize, int record_len);
+void fbatomic_internal_write(struct fastbuf *b);
+
+static inline void
+fbatomic_commit(struct fastbuf *b)
+{
+ if (b->bptr >= ((struct fb_atomic *)b)->expected_max_bptr)
+ fbatomic_internal_write(b);
+}
+
/* Configuring stream parameters */
int bconfig(struct fastbuf *f, uns type, int data);
byte *bgets0(struct fastbuf *f, byte *b, uns l);
struct mempool;
-uns bgets_bb(struct fastbuf *f, bb_t *b);
+struct bb_t;
+uns bgets_bb(struct fastbuf *f, struct bb_t *b, uns limit);
byte *bgets_mp(struct fastbuf *f, struct mempool *mp);
struct bgets_stk_struct {