Added macros for hinting branch predictor.

[libucw.git] / lib / config.h

diff --git a/lib/config.h b/lib/config.h
index 68d688a8b5776405c3e2916b1b1dd24cb5358c3d..cc2d86da15ac5f3ec43f2dd11b6dfb5ae938f4a5 100644 (file)
--- a/lib/config.h
+++ b/lib/config.h
@@ -1,21 +1,26 @@
 /*
- *     Sherlock Library -- Configuration-Dependent Definitions
+ *     Sherlock -- Configuration-Dependent Definitions
  *
- *     (c) 1997--2000 Martin Mares <mj@ucw.cz>
+ *     (c) 1997--2003 Martin Mares <mj@ucw.cz>
+ *
+ *     This software may be freely distributed and used according to the terms
+ *     of the GNU Lesser General Public License.
  */
 
 #ifndef _SHERLOCK_CONFIG_H
 #define _SHERLOCK_CONFIG_H
 
+/* Configuration switches */
+
+#include "lib/autoconf.h"
+
 /* Version */
 
-#define SHER_VER "2.0-alpha"
+#define SHER_VER "2.5" SHERLOCK_VERSION_SUFFIX
 
-/* Features */
+/* Paths */
 
-#define SHERLOCK_CONFIG_LARGE_DB       /* Support for DB files >4GB */
-#define SHERLOCK_CONFIG_LFS            /* Large files on 32-bit systems */
-#undef  SHERLOCK_CONFIG_LFS_LIBC       /* LFS supported directly by libc */
+#define DEFAULT_CONFIG "cf/sherlock"
 
 /* Types */
 
@@ -31,6 +36,7 @@ typedef unsigned int uns;             /* at least 32 bits */
 typedef unsigned long long int u64;    /* exactly 64 bits, unsigned */
 typedef long long int s64;             /* exactly 64 bits, signed */
 typedef unsigned long addr_int_t;      /* Both integer and address */
+typedef unsigned int sh_time_t;                /* Timestamp */
 
 #ifndef NULL
 #define NULL (void *)0
@@ -38,28 +44,34 @@ typedef unsigned long addr_int_t;   /* Both integer and address */
 
 typedef u32 oid_t;                     /* Object ID */
 
-#ifdef SHERLOCK_CONFIG_LFS             /* off_t as passed to file functions */
-typedef s64 sh_off_t;
-#define BYTES_PER_FILE_POINTER 5
-#else
-typedef int sh_off_t;
-#define BYTES_PER_FILE_POINTER 4
-#endif
+/* Data types and functions for accessing file positions */
 
-#ifdef SHERLOCK_CONFIG_LARGE_DB                /* off_t as present in database files */
-typedef s64 sh_foff_t;
+#ifdef CONFIG_LARGE_DB
+typedef s64 sh_off_t;
+#define BYTES_PER_O 5
+#define BYTES_PER_P 8
+#define bgeto(f) bget5(f)
+#define bputo(f,l) bput5(f,l)
+#define bgetp(f) bgetq(f)
+#define bputp(f,l) bputq(f,l)
+#define GET_O(p) GET_U40(p)
+#define GET_P(p) GET_U64(p)
+#define PUT_O(p,x) PUT_U40(p,x)
+#define PUT_P(p,x) PUT_U64(p,x)
 #else
-typedef s32 sh_foff_t;
+typedef s32 sh_off_t;
+#define BYTES_PER_O 4
+#define BYTES_PER_P 4
+#define bgeto(f) bgetl(f)
+#define bputo(f,l) bputl(f,l)
+#define bgetp(f) bgetl(f)
+#define bputp(f,l) bputl(f,l)
+#define GET_O(p) GET_U32(p)
+#define GET_P(p) GET_U32(p)
+#define PUT_O(p,x) PUT_U32(p,x)
+#define PUT_P(p,x) PUT_U32(p,x)
 #endif
 
-/* CPU characteristics */
-
-#define CPU_LITTLE_ENDIAN
-#undef CPU_BIG_ENDIAN
-#define CPU_CAN_DO_UNALIGNED_WORDS
-#define CPU_CAN_DO_UNALIGNED_LONGS
-#define CPU_STRUCT_ALIGN 4
-
 /* Misc */
 
 #ifdef __GNUC__
@@ -67,13 +79,15 @@ typedef s32 sh_foff_t;
 #undef inline
 #define NONRET __attribute__((noreturn))
 #define UNUSED __attribute__((unused))
+#define CONSTRUCTOR __attribute__((constructor))
+#define PACKED __attribute__((packed))
+#define CONST __attribute__((const))
+#define PURE __attribute__((const))
+#define likely(x) __builtin_expect((x),1)
+#define unlikely(x) __builtin_expect((x),0)
 
 #else
-
-#define inline
-#define NONRET
-#define UNUSED
-
+#error This program requires the GNU C compiler.
 #endif
 
 #endif