/* Configuration, some of the variables are used by the old sorter, too. */
extern uns sorter_trace, sorter_presort_bufsize, sorter_stream_bufsize;
+extern uns sorter_debug;
extern u64 sorter_bufsize;
#define SORT_TRACE(x...) do { if (sorter_trace) log(L_DEBUG, x); } while(0)
-#define SORT_XTRACE(x...) do { if (sorter_trace > 1) log(L_DEBUG, x); } while(0)
+#define SORT_XTRACE(level, x...) do { if (sorter_trace >= level) log(L_DEBUG, x); } while(0)
-struct sort_bucket {
- cnode n;
- uns flags;
- struct fastbuf *fb;
- byte *name;
- u64 size; // Size in bytes
- uns runs; // Number of runs, 0 if not sorted
- uns hash_bits; // Remaining bits of the hash function
- byte *ident; // Identifier used in debug messages
+enum sort_debug {
+ SORT_DEBUG_NO_PRESORT = 1,
+ SORT_DEBUG_NO_JOIN = 2,
+ SORT_DEBUG_KEEP_BUCKETS = 4,
};
-enum sort_bucket_flags {
- SBF_FINAL = 1, // This bucket corresponds to the final output file (always 1 run)
- SBF_SOURCE = 2, // Contains the source file (always 0 runs)
- SBF_CUSTOM_PRESORT = 4, // Contains source to read via custom presorter
-};
+struct sort_bucket;
struct sort_context {
struct fastbuf *in_fb;
void *big_buf, *big_buf_half;
size_t big_buf_size, big_buf_half_size;
- int (*custom_presort)(struct fastbuf *dest, byte *buf, size_t bufsize);
+ int (*custom_presort)(struct fastbuf *dest, void *buf, size_t bufsize);
// Take as much as possible from the source bucket, sort it in memory and dump to destination bucket.
// Return 1 if there is more data available in the source bucket.
int (*internal_sort)(struct sort_context *ctx, struct sort_bucket *in, struct sort_bucket *out, struct sort_bucket *out_only);
void sorter_run(struct sort_context *ctx);
+/* Buffers */
+
void *sorter_alloc(struct sort_context *ctx, uns size);
void sorter_alloc_buf(struct sort_context *ctx);
void sorter_free_buf(struct sort_context *ctx);
-// Operations on buckets
+/* Buckets */
+
+struct sort_bucket {
+ cnode n;
+ struct sort_context *ctx;
+ uns flags;
+ struct fastbuf *fb;
+ byte *filename;
+ u64 size; // Size in bytes (not valid when writing)
+ uns runs; // Number of runs, 0 if not sorted
+ uns hash_bits; // Remaining bits of the hash function
+ byte *ident; // Identifier used in debug messages
+};
+
+enum sort_bucket_flags {
+ SBF_FINAL = 1, // This bucket corresponds to the final output file (always 1 run)
+ SBF_SOURCE = 2, // Contains the source file (always 0 runs)
+ SBF_CUSTOM_PRESORT = 4, // Contains source to read via custom presorter
+ SBF_OPEN_WRITE = 256, // We are currently writing to the fastbuf
+ SBF_OPEN_READ = 512, // We are reading from the fastbuf
+ SBF_DESTROYED = 1024, // Already done with, no further references allowed
+ SBF_SWAPPED_OUT = 2048, // Swapped out to a named file
+};
+
struct sort_bucket *sbuck_new(struct sort_context *ctx);
void sbuck_drop(struct sort_bucket *b);
-int sbuck_can_read(struct sort_bucket *b);
-struct fastbuf *sbuck_open_read(struct sort_bucket *b);
-struct fastbuf *sbuck_open_write(struct sort_bucket *b);
-void sbuck_close_read(struct sort_bucket *b);
-void sbuck_close_write(struct sort_bucket *b);
+int sbuck_have(struct sort_bucket *b);
+int sbuck_has_file(struct sort_bucket *b);
+sh_off_t sbuck_size(struct sort_bucket *b);
+struct fastbuf *sbuck_read(struct sort_bucket *b);
+struct fastbuf *sbuck_write(struct sort_bucket *b);
+void sbuck_swap_out(struct sort_bucket *b);
+
+#define F_SIZE(x) ({ byte buf[16]; format_size(buf, x); buf; })
+#define F_BSIZE(b) F_SIZE(sbuck_size(b))
+void format_size(byte *buf, u64 x);
#endif