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830 lines
20 KiB
C
830 lines
20 KiB
C
#undef PORTNAME
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#define PORTNAME OS2
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/*-------------------------------------------------------------------------
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*
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* c.h--
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* Fundamental C definitions. This is included by every .c file in
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* postgres.
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*
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*
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* Copyright (c) 1994, Regents of the University of California
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*
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* $Id: c.h,v 1.1 1998/10/31 04:10:53 scrappy Exp $
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*
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*-------------------------------------------------------------------------
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*/
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/*
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* TABLE OF CONTENTS
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*
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* When adding stuff to this file, please try and put stuff
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* into the relevant section, or add new sections as appropriate.
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*
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* section description
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* ------- ------------------------------------------------
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* 1) bool, true, false, TRUE, FALSE
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* 2) __STDC__, non-ansi C definitions:
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* Pointer typedef, NULL
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* cpp magic macros
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* type prefixes: const, signed, volatile, inline
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* 3) standard system types
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* 4) datum type
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* 5) IsValid macros for system types
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* 6) offsetof, lengthof, endof
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* 7) exception handling definitions, Assert, Trap, etc macros
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* 8) Min, Max, Abs, StrNCpy macros
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* 9) externs
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* 10) Berkeley-specific defs
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* 11) system-specific hacks
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*
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* NOTES
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*
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* This file is MACHINE AND COMPILER dependent!!! (For now.)
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*
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* ----------------------------------------------------------------
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*/
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#ifndef C_H
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#define C_H
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/* We have to include stdlib.h here because it defines many of these macros
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on some platforms, and we only want our definitions used if stdlib.h doesn't
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have its own.
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*/
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#include <stdlib.h>
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/* ----------------------------------------------------------------
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* Section 1: bool, true, false, TRUE, FALSE
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* ----------------------------------------------------------------
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*/
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/*
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* bool --
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* Boolean value, either true or false.
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*
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*/
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#define false ((char) 0)
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#define true ((char) 1)
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#ifndef __cplusplus
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#ifndef bool
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typedef char bool;
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#endif /* ndef bool */
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#endif /* not C++ */
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typedef bool *BoolPtr;
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#ifndef TRUE
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#define TRUE 1
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#endif /* TRUE */
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#ifndef FALSE
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#define FALSE 0
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#endif /* FALSE */
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/* ----------------------------------------------------------------
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* Section 2: __STDC__, non-ansi C definitions:
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*
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* cpp magic macros
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* Pointer typedef, NULL
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* type prefixes: const, signed, volatile, inline
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* ----------------------------------------------------------------
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*/
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#ifdef __STDC__ /* ANSI C */
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/*
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* Pointer --
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* Variable holding address of any memory resident object.
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*/
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/*
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* XXX Pointer arithmetic is done with this, so it can't be void *
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* under "true" ANSI compilers.
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*/
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typedef char *Pointer;
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#ifndef NULL
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/*
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* NULL --
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* Null pointer.
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*/
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#define NULL ((void *) 0)
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#endif /* !defined(NULL) */
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#define HAVE_ANSI_CPP /* all ANSI C compilers must have this! */
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#if defined(NEED_STD_HDRS)
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#undef NEED_STD_HDRS /* all ANSI systems must have
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* stddef/stdlib */
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#endif /* NEED_STD_HDRS */
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#else /* !defined(__STDC__) *//* NOT ANSI C */
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/*
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* Pointer --
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* Variable containing address of any memory resident object.
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*/
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typedef char *Pointer;
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#ifndef NULL
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/*
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* NULL --
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* Null pointer.
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*/
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#define NULL 0
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#endif /* !defined(NULL) */
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/*
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* const --
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* Type modifier. Identifies read only variables.
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*
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* Example:
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* extern const Version RomVersion;
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*/
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#ifndef WIN32
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#define const /* const */
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#endif
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/*
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* signed --
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* Type modifier. Identifies signed integral types.
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*/
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#define signed /* signed */
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/*
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* volatile --
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* Type modifier. Identifies variables which may change in ways not
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* noticeable by the compiler, e.g. via asynchronous interrupts.
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*
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* Example:
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* extern volatile unsigned int NumberOfInterrupts;
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*/
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#define volatile /* volatile */
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#endif /* !defined(__STDC__) */ /* NOT ANSI C */
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/*
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* CppAsString --
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* Convert the argument to a string, using the C preprocessor.
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* CppConcat --
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* Concatenate two arguments together, using the C preprocessor.
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*/
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#if defined(HAVE_ANSI_CPP)
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#define CppAsString(identifier) #identifier
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#define CppConcat(x, y) x##y
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#else /* !HAVE_ANSI_CPP */
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#define CppAsString(identifier) "identifier"
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/*
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* CppIdentity -- On Reiser based cpp's this is used to concatenate
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* two tokens. That is
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* CppIdentity(A)B ==> AB
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* We renamed it to _private_CppIdentity because it should not
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* be referenced outside this file. On other cpp's it
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* produces A B.
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*/
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#define _priv_CppIdentity(x)x
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#define CppConcat(x, y) _priv_CppIdentity(x)y
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#endif /* !HAVE_ANSI_CPP */
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#ifndef __GNUC__ /* GNU cc */
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#endif
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#ifndef __GNUC__ /* GNU cc */
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#define inline
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/*
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* dummyret is used to set return values in macros that use ?: to make
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* assignments. gcc wants these to be void, other compilers like char
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*/
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#define dummyret char
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#else
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#define dummyret void
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#endif
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#if defined(NEED_STD_HDRS)
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/*
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* You're doomed. We've removed almost all of our own C library
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* extern declarations because they conflict on the different
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* systems. You'll have to write your own stdlib.h.
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*/
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#include "stdlib.h"
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#else /* NEED_STD_HDRS */
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#include <stddef.h>
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#include <stdlib.h>
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#endif /* NEED_STD_HDRS */
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/* ----------------------------------------------------------------
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* Section 3: standard system types
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* ----------------------------------------------------------------
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*/
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/*
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* intN --
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* Signed integer, EXACTLY N BITS IN SIZE,
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* used for numerical computations and the
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* frontend/backend protocol.
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*/
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typedef signed char int8; /* == 8 bits */
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typedef signed short int16; /* == 16 bits */
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typedef signed int int32; /* == 32 bits */
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/*
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* uintN --
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* Unsigned integer, EXACTLY N BITS IN SIZE,
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* used for numerical computations and the
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* frontend/backend protocol.
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*/
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typedef unsigned char uint8; /* == 8 bits */
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typedef unsigned short uint16; /* == 16 bits */
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typedef unsigned int uint32; /* == 32 bits */
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/*
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* floatN --
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* Floating point number, AT LEAST N BITS IN SIZE,
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* used for numerical computations.
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*
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* Since sizeof(floatN) may be > sizeof(char *), always pass
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* floatN by reference.
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*/
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typedef float float32data;
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typedef double float64data;
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typedef float *float32;
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typedef double *float64;
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/*
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* boolN --
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* Boolean value, AT LEAST N BITS IN SIZE.
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*/
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typedef uint8 bool8; /* >= 8 bits */
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typedef uint16 bool16; /* >= 16 bits */
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typedef uint32 bool32; /* >= 32 bits */
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/*
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* bitsN --
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* Unit of bitwise operation, AT LEAST N BITS IN SIZE.
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*/
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typedef uint8 bits8; /* >= 8 bits */
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typedef uint16 bits16; /* >= 16 bits */
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typedef uint32 bits32; /* >= 32 bits */
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/*
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* wordN --
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* Unit of storage, AT LEAST N BITS IN SIZE,
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* used to fetch/store data.
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*/
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typedef uint8 word8; /* >= 8 bits */
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typedef uint16 word16; /* >= 16 bits */
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typedef uint32 word32; /* >= 32 bits */
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/*
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* Size --
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* Size of any memory resident object, as returned by sizeof.
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*/
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typedef unsigned int Size;
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/*
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* Index --
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* Index into any memory resident array.
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*
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* Note:
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* Indices are non negative.
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*/
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typedef unsigned int Index;
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#define MAXDIM 6
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typedef struct
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{
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int indx[MAXDIM];
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} IntArray;
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/*
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* Offset --
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* Offset into any memory resident array.
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*
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* Note:
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* This differs from an Index in that an Index is always
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* non negative, whereas Offset may be negative.
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*/
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typedef signed int Offset;
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/* ----------------------------------------------------------------
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* Section 4: datum type + support macros
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* ----------------------------------------------------------------
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*/
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/*
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* datum.h --
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* POSTGRES abstract data type datum representation definitions.
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*
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* Note:
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*
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* Port Notes:
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* Postgres makes the following assumption about machines:
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*
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* sizeof(Datum) == sizeof(long) >= sizeof(void *) >= 4
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*
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* Postgres also assumes that
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*
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* sizeof(char) == 1
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*
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* and that
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*
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* sizeof(short) == 2
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*
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* If your machine meets these requirements, Datums should also be checked
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* to see if the positioning is correct.
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*
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* This file is MACHINE AND COMPILER dependent!!!
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*/
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typedef unsigned long Datum; /* XXX sizeof(long) >= sizeof(void *) */
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typedef Datum *DatumPtr;
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#define GET_1_BYTE(datum) (((Datum) (datum)) & 0x000000ff)
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#define GET_2_BYTES(datum) (((Datum) (datum)) & 0x0000ffff)
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#define GET_4_BYTES(datum) (((Datum) (datum)) & 0xffffffff)
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#define SET_1_BYTE(value) (((Datum) (value)) & 0x000000ff)
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#define SET_2_BYTES(value) (((Datum) (value)) & 0x0000ffff)
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#define SET_4_BYTES(value) (((Datum) (value)) & 0xffffffff)
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/*
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* DatumGetChar --
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* Returns character value of a datum.
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*/
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#define DatumGetChar(X) ((char) GET_1_BYTE(X))
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/*
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* CharGetDatum --
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* Returns datum representation for a character.
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*/
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#define CharGetDatum(X) ((Datum) SET_1_BYTE(X))
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/*
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* Int8GetDatum --
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* Returns datum representation for an 8-bit integer.
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*/
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#define Int8GetDatum(X) ((Datum) SET_1_BYTE(X))
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/*
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* DatumGetUInt8 --
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* Returns 8-bit unsigned integer value of a datum.
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*/
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#define DatumGetUInt8(X) ((uint8) GET_1_BYTE(X))
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/*
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* UInt8GetDatum --
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* Returns datum representation for an 8-bit unsigned integer.
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*/
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#define UInt8GetDatum(X) ((Datum) SET_1_BYTE(X))
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/*
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* DatumGetInt16 --
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* Returns 16-bit integer value of a datum.
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*/
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#define DatumGetInt16(X) ((int16) GET_2_BYTES(X))
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/*
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* Int16GetDatum --
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* Returns datum representation for a 16-bit integer.
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*/
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#define Int16GetDatum(X) ((Datum) SET_2_BYTES(X))
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/*
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* DatumGetUInt16 --
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* Returns 16-bit unsigned integer value of a datum.
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*/
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#define DatumGetUInt16(X) ((uint16) GET_2_BYTES(X))
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/*
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* UInt16GetDatum --
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* Returns datum representation for a 16-bit unsigned integer.
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*/
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#define UInt16GetDatum(X) ((Datum) SET_2_BYTES(X))
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/*
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* DatumGetInt32 --
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* Returns 32-bit integer value of a datum.
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*/
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#define DatumGetInt32(X) ((int32) GET_4_BYTES(X))
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/*
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* Int32GetDatum --
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* Returns datum representation for a 32-bit integer.
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*/
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#define Int32GetDatum(X) ((Datum) SET_4_BYTES(X))
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/*
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* DatumGetUInt32 --
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* Returns 32-bit unsigned integer value of a datum.
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*/
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#define DatumGetUInt32(X) ((uint32) GET_4_BYTES(X))
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/*
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* UInt32GetDatum --
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* Returns datum representation for a 32-bit unsigned integer.
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*/
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#define UInt32GetDatum(X) ((Datum) SET_4_BYTES(X))
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/*
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* DatumGetObjectId --
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* Returns object identifier value of a datum.
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*/
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#define DatumGetObjectId(X) ((Oid) GET_4_BYTES(X))
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/*
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* ObjectIdGetDatum --
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* Returns datum representation for an object identifier.
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*/
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#define ObjectIdGetDatum(X) ((Datum) SET_4_BYTES(X))
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/*
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* DatumGetPointer --
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* Returns pointer value of a datum.
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*/
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#define DatumGetPointer(X) ((Pointer) X)
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/*
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* PointerGetDatum --
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* Returns datum representation for a pointer.
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*/
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#define PointerGetDatum(X) ((Datum) X)
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/*
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* DatumGetName --
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* Returns name value of a datum.
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*/
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#define DatumGetName(X) ((Name) DatumGetPointer((Datum) X))
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/*
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* NameGetDatum --
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* Returns datum representation for a name.
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*/
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#define NameGetDatum(X) PointerGetDatum((Pointer) X)
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/*
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* DatumGetFloat32 --
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* Returns 32-bit floating point value of a datum.
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* This is really a pointer, of course.
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*/
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#define DatumGetFloat32(X) ((float32) DatumGetPointer((Datum) X))
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/*
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* Float32GetDatum --
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* Returns datum representation for a 32-bit floating point number.
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* This is really a pointer, of course.
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*/
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#define Float32GetDatum(X) PointerGetDatum((Pointer) X)
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/*
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* DatumGetFloat64 --
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* Returns 64-bit floating point value of a datum.
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* This is really a pointer, of course.
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*/
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#define DatumGetFloat64(X) ((float64) DatumGetPointer(X))
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/*
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* Float64GetDatum --
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* Returns datum representation for a 64-bit floating point number.
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* This is really a pointer, of course.
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*/
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#define Float64GetDatum(X) PointerGetDatum((Pointer) X)
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/* ----------------------------------------------------------------
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* Section 5: IsValid macros for system types
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* ----------------------------------------------------------------
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*/
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/*
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* BoolIsValid --
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* True iff bool is valid.
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*/
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#define BoolIsValid(boolean) ((boolean) == false || (boolean) == true)
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/*
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* PointerIsValid --
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* True iff pointer is valid.
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*/
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#define PointerIsValid(pointer) (bool)((void*)(pointer) != NULL)
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/*
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* PointerIsInBounds --
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* True iff pointer is within given bounds.
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*
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* Note:
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* Assumes the bounded interval to be [min,max),
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* i.e. closed on the left and open on the right.
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*/
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#define PointerIsInBounds(pointer, min, max) \
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((min) <= (pointer) && (pointer) < (max))
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/*
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* PointerIsAligned --
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* True iff pointer is properly aligned to point to the given type.
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*/
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#define PointerIsAligned(pointer, type) \
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(((long)(pointer) % (sizeof (type))) == 0)
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/* ----------------------------------------------------------------
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* Section 6: offsetof, lengthof, endof
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* ----------------------------------------------------------------
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*/
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/*
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* offsetof --
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* Offset of a structure/union field within that structure/union.
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*
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* XXX This is supposed to be part of stddef.h, but isn't on
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* some systems (like SunOS 4).
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*/
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#ifndef offsetof
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#define offsetof(type, field) ((long) &((type *)0)->field)
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#endif /* offsetof */
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/*
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* lengthof --
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* Number of elements in an array.
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*/
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#define lengthof(array) (sizeof (array) / sizeof ((array)[0]))
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/*
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* endof --
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* Address of the element one past the last in an array.
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*/
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#define endof(array) (&array[lengthof(array)])
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/* ----------------------------------------------------------------
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* Section 7: exception handling definitions
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* Assert, Trap, etc macros
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* ----------------------------------------------------------------
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*/
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/*
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* Exception Handling definitions
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*/
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typedef char *ExcMessage;
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typedef struct Exception
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{
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ExcMessage message;
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} Exception;
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|
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/*
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* USE_ASSERT_CHECKING, if defined, turns on all the assertions.
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* - plai 9/5/90
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*
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* It should _NOT_ be defined in releases or in benchmark copies
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*/
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/*
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* Trap --
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* Generates an exception if the given condition is true.
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*
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*/
|
|
#define Trap(condition, exception) \
|
|
{ if ((assert_enabled) && (condition)) \
|
|
ExceptionalCondition(CppAsString(condition), &(exception), \
|
|
(char*)NULL, __FILE__, __LINE__); }
|
|
|
|
/*
|
|
* TrapMacro is the same as Trap but it's intended for use in macros:
|
|
*
|
|
* #define foo(x) (AssertM(x != 0) && bar(x))
|
|
*
|
|
* Isn't CPP fun?
|
|
*/
|
|
#define TrapMacro(condition, exception) \
|
|
((bool) ((! assert_enabled) || (! condition) || \
|
|
(ExceptionalCondition(CppAsString(condition), \
|
|
&(exception), \
|
|
(char*) NULL, __FILE__, __LINE__))))
|
|
|
|
#ifndef USE_ASSERT_CHECKING
|
|
#define Assert(condition)
|
|
#define AssertMacro(condition) (void)true
|
|
#define AssertArg(condition)
|
|
#define AssertState(condition)
|
|
#define assert_enabled 0
|
|
#else
|
|
#define Assert(condition) \
|
|
Trap(!(condition), FailedAssertion)
|
|
|
|
#define AssertMacro(condition) \
|
|
(void)TrapMacro(!(condition), FailedAssertion)
|
|
|
|
#define AssertArg(condition) \
|
|
Trap(!(condition), BadArg)
|
|
|
|
#define AssertState(condition) \
|
|
Trap(!(condition), BadState)
|
|
|
|
extern int assert_enabled;
|
|
|
|
#endif /* USE_ASSERT_CHECKING */
|
|
|
|
/*
|
|
* LogTrap --
|
|
* Generates an exception with a message if the given condition is true.
|
|
*
|
|
*/
|
|
#define LogTrap(condition, exception, printArgs) \
|
|
{ if ((assert_enabled) && (condition)) \
|
|
ExceptionalCondition(CppAsString(condition), &(exception), \
|
|
form printArgs, __FILE__, __LINE__); }
|
|
|
|
/*
|
|
* LogTrapMacro is the same as LogTrap but it's intended for use in macros:
|
|
*
|
|
* #define foo(x) (LogAssertMacro(x != 0, "yow!") && bar(x))
|
|
*/
|
|
#define LogTrapMacro(condition, exception, printArgs) \
|
|
((bool) ((! assert_enabled) || (! condition) || \
|
|
(ExceptionalCondition(CppAsString(condition), \
|
|
&(exception), \
|
|
form printArgs, __FILE__, __LINE__))))
|
|
|
|
#ifndef USE_ASSERT_CHECKING
|
|
#define LogAssert(condition, printArgs)
|
|
#define LogAssertMacro(condition, printArgs) true
|
|
#define LogAssertArg(condition, printArgs)
|
|
#define LogAssertState(condition, printArgs)
|
|
#else
|
|
#define LogAssert(condition, printArgs) \
|
|
LogTrap(!(condition), FailedAssertion, printArgs)
|
|
|
|
#define LogAssertMacro(condition, printArgs) \
|
|
LogTrapMacro(!(condition), FailedAssertion, printArgs)
|
|
|
|
#define LogAssertArg(condition, printArgs) \
|
|
LogTrap(!(condition), BadArg, printArgs)
|
|
|
|
#define LogAssertState(condition, printArgs) \
|
|
LogTrap(!(condition), BadState, printArgs)
|
|
|
|
extern int assertEnable(int val);
|
|
|
|
#ifdef ASSERT_CHECKING_TEST
|
|
extern int assertTest(int val);
|
|
|
|
#endif
|
|
#endif /* USE_ASSERT_CHECKING */
|
|
|
|
/* ----------------------------------------------------------------
|
|
* Section 8: Min, Max, Abs macros
|
|
* ----------------------------------------------------------------
|
|
*/
|
|
/*
|
|
* Max --
|
|
* Return the maximum of two numbers.
|
|
*/
|
|
#define Max(x, y) ((x) > (y) ? (x) : (y))
|
|
|
|
/*
|
|
* Min --
|
|
* Return the minimum of two numbers.
|
|
*/
|
|
#define Min(x, y) ((x) < (y) ? (x) : (y))
|
|
|
|
/*
|
|
* Abs --
|
|
* Return the absolute value of the argument.
|
|
*/
|
|
#define Abs(x) ((x) >= 0 ? (x) : -(x))
|
|
|
|
/*
|
|
* StrNCpy --
|
|
* Does string copy, and forces terminating NULL
|
|
*/
|
|
/* we do this so if the macro is used in an if action, it will work */
|
|
#define StrNCpy(dst,src,len) \
|
|
( \
|
|
((len) > 0) ? \
|
|
( \
|
|
strncpy((dst),(src),(len)-1), \
|
|
*((dst)+(len)-1)='\0' \
|
|
) \
|
|
: \
|
|
(dummyret)NULL,(void)(dst) \
|
|
)
|
|
|
|
/* Get a bit mask of the bits set in non-int32 aligned addresses */
|
|
#define INT_ALIGN_MASK (sizeof(int32) - 1)
|
|
|
|
/*
|
|
* This function gets call too often, so we inline it if we can.
|
|
* Are we aligned for int32?
|
|
* We have to cast the pointer to int so we can do the AND
|
|
* We got the 64 number by testing this against the stock memset() on
|
|
* BSD/OS 3.0. Larger values were slower.
|
|
*/
|
|
#define MemSet(start, val, len) do \
|
|
{ \
|
|
if (((long)(start) & INT_ALIGN_MASK) == 0 && \
|
|
((len) & INT_ALIGN_MASK) == 0 && \
|
|
(val) == 0 && \
|
|
(len) <= 64) \
|
|
{ \
|
|
int32 *_i = (int32 *)(start); \
|
|
int32 *_stop = (int32 *)((char *)(start) + (len)); \
|
|
\
|
|
while (_i < _stop) \
|
|
*_i++ = 0; \
|
|
} \
|
|
else \
|
|
memset((start), (val), (len)); \
|
|
} while (0)
|
|
|
|
/* ----------------------------------------------------------------
|
|
* Section 9: externs
|
|
* ----------------------------------------------------------------
|
|
*/
|
|
|
|
extern Exception FailedAssertion;
|
|
extern Exception BadArg;
|
|
extern Exception BadState;
|
|
|
|
/* in utils/error/assert.c */
|
|
extern int ExceptionalCondition(char *conditionName,
|
|
Exception *exceptionP, char *details,
|
|
char *fileName, int lineNumber);
|
|
|
|
|
|
/* ----------------
|
|
* form is used by assert and the exception handling stuff
|
|
* ----------------
|
|
*/
|
|
extern char *form(const char *fmt,...);
|
|
|
|
|
|
|
|
/* ----------------------------------------------------------------
|
|
* Section 10: berkeley-specific configuration
|
|
*
|
|
* this section contains settings which are only relevant to the UC Berkeley
|
|
* sites. Other sites can ignore this
|
|
* ----------------------------------------------------------------
|
|
*/
|
|
|
|
/* ----------------
|
|
* storage managers
|
|
*
|
|
* These are experimental and are not supported in the code that
|
|
* we distribute to other sites.
|
|
* ----------------
|
|
*/
|
|
#ifdef NOT_USED
|
|
#define STABLE_MEMORY_STORAGE
|
|
#endif
|
|
|
|
|
|
|
|
/* ----------------------------------------------------------------
|
|
* Section 11: system-specific hacks
|
|
*
|
|
* This should be limited to things that absolutely have to be
|
|
* included in every source file. The changes should be factored
|
|
* into a separate file so that changes to one port don't require
|
|
* changes to c.h (and everyone recompiling their whole system).
|
|
* ----------------------------------------------------------------
|
|
*/
|
|
|
|
#ifdef FIXADE
|
|
#if defined(hpux)
|
|
#include "port/hpux/fixade.h" /* for unaligned access fixup */
|
|
#endif /* hpux */
|
|
#endif
|
|
|
|
#if defined(sun) && defined(sparc) && !defined(__SVR4)
|
|
#define memmove(d, s, l) bcopy(s, d, l)
|
|
#include <unistd.h>
|
|
#endif
|
|
|
|
/* These are for things that are one way on Unix and another on NT */
|
|
#define NULL_DEV "/dev/null"
|
|
#define COPY_CMD "cp"
|
|
#define SEP_CHAR '/'
|
|
|
|
/* ----------------
|
|
* end of c.h
|
|
* ----------------
|
|
*/
|
|
#endif /* C_H */
|