#define _PDCLIB_CONFIG_H
/* Internal PDCLib configuration <_PDCLIB_config.h>
- (Generic Template)
+ (POSIX platform)
This file is part of the Public Domain C Library (PDCLib).
Permission is granted to use, modify, and / or redistribute at will.
/* specific platforms, e.g. by swapping int instead of char. */
#define _PDCLIB_memswp( i, j, size ) char tmp; do { tmp = *i; *i++ = *j; *j++ = tmp; } while ( --size );
-/* Define this to some compiler directive that can be written after the */
-/* parameter list of a function declaration to indicate the function does */
-/* never return. If your compiler does not support such a directive, define */
-/* to nothing. (This is to avoid warnings with the exit functions under GCC.) */
-#define _PDCLIB_NORETURN __attribute__(( noreturn ))
-
/* The maximum value that errno can be set to. This is used to set the size */
/* of the array in struct lconv (<locale.h>) holding error messages for the */
/* strerror() and perror() functions. (If you change this value because you */
/* compiler manuals. */
#define _PDCLIB_SHRT_BYTES 2
#define _PDCLIB_INT_BYTES 4
-#define _PDCLIB_LONG_BYTES 4
+#if defined(_LP64) || defined(__ILP64__)
+ #define _PDCLIB_LONG_BYTES 8
+#else
+ #define _PDCLIB_LONG_BYTES 4
+#endif
#define _PDCLIB_LLONG_BYTES 8
+// Match Darwin headers
+#define _PDCLIB_INT64_IS_LLONG
+
/* <stdlib.h> defines the div() function family that allows taking quotient */
/* and remainder of an integer division in one operation. Many platforms */
/* support this in hardware / opcode, and the standard permits ordering of */
#define _PDCLIB_fast32 int
#define _PDCLIB_FAST32_CONV
+#ifdef __LP64__
+#define _PDCLIB_FAST64 LONG
+#define _PDCLIB_fast64 long
+#define _PDCLIB_FAST64_CONV l
+#else
#define _PDCLIB_FAST64 LLONG
#define _PDCLIB_fast64 long long
#define _PDCLIB_FAST64_CONV ll
+#endif
/* -------------------------------------------------------------------------- */
/* What follows are a couple of "special" typedefs and their limits. Again, */
/* -------------------------------------------------------------------------- */
/* The result type of substracting two pointers */
-#define _PDCLIB_ptrdiff int
-#define _PDCLIB_PTRDIFF INT
-#define _PDCLIB_PTR_CONV
+#define _PDCLIB_ptrdiff long
+#define _PDCLIB_PTRDIFF LONG
+#define _PDCLIB_PTR_CONV l
/* An integer type that can be accessed as atomic entity (think asynchronous
interrupts). The type itself is not defined in a freestanding environment,
#define _PDCLIB_SIG_ATOMIC INT
/* Result type of the 'sizeof' operator (must be unsigned) */
-#define _PDCLIB_size unsigned int
-#define _PDCLIB_SIZE UINT
+#define _PDCLIB_size unsigned long
+#define _PDCLIB_SIZE ULONG
/* Large enough an integer to hold all character codes of the largest supported
locale.
*/
-#define _PDCLIB_wchar unsigned short
-#define _PDCLIB_WCHAR USHRT
+#define _PDCLIB_wint int
+#define _PDCLIB_wchar int
+#define _PDCLIB_WCHAR INT
-#define _PDCLIB_intptr int
-#define _PDCLIB_INTPTR INT
+#define _PDCLIB_intptr long
+#define _PDCLIB_INTPTR LONG
/* Largest supported integer type. Implementation note: see _PDCLIB_atomax(). */
#define _PDCLIB_intmax long long int
_PDCLIB_intmax rem;
};
-/* <time.h>: time_t
- * The C standard doesn't define what representation of time is stored in
+/* <time.h>: time_t
+ * The C standard doesn't define what representation of time is stored in
* time_t when returned by time() , but POSIX defines it to be seconds since the
- * UNIX epoch and most appplications expect that.
+ * UNIX epoch and most appplications expect that.
*
- * time_t is also used as the tv_sec member of struct timespec, which *is*
+ * time_t is also used as the tv_sec member of struct timespec, which *is*
* defined as a linear count of seconds.
*
* time_t is defined as a "real type", so may be a floating point type, but with
* the presence of the nanosecond accurate struct timespec, and with the lack of
- * any functions for manipulating more accurate values of time_t, this is
+ * any functions for manipulating more accurate values of time_t, this is
* probably not useful.
*/
-#define _PDCLIB_time unsigned long long
+#define _PDCLIB_time long
/* <time.h>: clock_t
*
* A count of "clock ticks", where the length of a clock tick is unspecified by
- * the standard. The implementation is required to provide a macro,
+ * the standard. The implementation is required to provide a macro,
* CLOCKS_PER_SEC, which is the number of "clock ticks" which corresponds to one
* second.
*
* clock_t may be any real type (i.e. integral or floating), and its type on
- * various systems differs.
+ * various systems differs.
*
* On XSI systems, CLOCKS_PER_SEC must be defined to 1000000
*/
-#define _PDCLIB_clock double
+#define _PDCLIB_clock long
#define _PDCLIB_CLOCKS_PER_SEC 1000000
+/* <time.h>: TIME_UTC
+ *
+ * The TIME_UTC parameter is passed to the timespec_get function in order to get
+ * the system time in UTC since an implementation defined epoch (not necessarily
+ * the same as that used for time_t). That said, on POSIX the obvious
+ * implementation of timespec_get for TIME_UTC is to wrap
+ * clock_gettime(CLOCK_REALTIME, ...), which is defined as time in UTC since the
+ * same epoch.
+ *
+ * This may be any non-zero integer value.
+ */
+#define _PDCLIB_TIME_UTC 1
+
/* -------------------------------------------------------------------------- */
/* Floating Point */
/* -------------------------------------------------------------------------- */
*/
#define _PDCLIB_DECIMAL_DIG 17
+/* Floating point types
+ *
+ * PDCLib (at present) assumes IEEE 754 floating point formats
+ * The following names are used:
+ * SINGLE: IEEE 754 single precision (32-bit)
+ * DOUBLE: IEEE 754 double precision (64-bit)
+ * EXTENDED: IEEE 754 extended precision (80-bit, as x87)
+ */
+#define _PDCLIB_FLOAT_TYPE SINGLE
+#define _PDCLIB_DOUBLE_TYPE DOUBLE
+#define _PDCLIB_LDOUBLE_TYPE EXTENDED
+
/* -------------------------------------------------------------------------- */
/* Platform-dependent macros defined by the standard headers. */
/* -------------------------------------------------------------------------- */
takes the address of member. This is undefined behaviour but should work on
most compilers.
*/
-#define _PDCLIB_offsetof( type, member ) ( (size_t) &( ( (type *) 0 )->member ) )
+#ifdef __GNUC__
+ #define _PDCLIB_offsetof( type, member ) __builtin_offsetof( type, member )
+#else
+ #define _PDCLIB_offsetof( type, member ) ( (size_t) &( ( (type *) 0 )->member ) )
+#endif
/* Variable Length Parameter List Handling (<stdarg.h>)
The macros defined by <stdarg.h> are highly dependent on the calling
conventions used, and you probably have to replace them with builtins of
- your compiler. The following generic implementation works only for pure
- stack-based architectures, and only if arguments are aligned to pointer
- type. Credits to Michael Moody, who contributed this to the Public Domain.
+ your compiler.
*/
-/* Internal helper macro. va_round is not part of <stdarg.h>. */
-#define _PDCLIB_va_round( type ) ( (sizeof(type) + sizeof(void *) - 1) & ~(sizeof(void *) - 1) )
-
-typedef char * _PDCLIB_va_list;
-#define _PDCLIB_va_arg( ap, type ) ( (ap) += (_PDCLIB_va_round(type)), ( *(type*) ( (ap) - (_PDCLIB_va_round(type)) ) ) )
-#define _PDCLIB_va_copy( dest, src ) ( (dest) = (src), (void)0 )
-#define _PDCLIB_va_end( ap ) ( (ap) = (void *)0, (void)0 )
-#define _PDCLIB_va_start( ap, parmN ) ( (ap) = (char *) &parmN + ( _PDCLIB_va_round(parmN) ), (void)0 )
+#ifdef __GNUC__
+ typedef __builtin_va_list _PDCLIB_va_list;
+ #define _PDCLIB_va_arg( ap, type ) (__builtin_va_arg( (ap), type ))
+ #define _PDCLIB_va_copy( dest, src ) (__builtin_va_copy( (dest), (src) ))
+ #define _PDCLIB_va_end( ap ) (__builtin_va_end( ap ) )
+ #define _PDCLIB_va_start( ap, parmN ) (__builtin_va_start( (ap), (parmN) ))
+#elif (defined(__i386__) || defined(__i386) || defined(_M_IX86)) && !(defined(__amd64__) || defined(__x86_64__) || defined(_M_AMD64))
+ /* Internal helper macro. va_round is not part of <stdarg.h>. */
+ #define _PDCLIB_va_round( type ) ( (sizeof(type) + sizeof(void *) - 1) & ~(sizeof(void *) - 1) )
+
+ typedef char * _PDCLIB_va_list;
+ #define _PDCLIB_va_arg( ap, type ) ( (ap) += (_PDCLIB_va_round(type)), ( *(type*) ( (ap) - (_PDCLIB_va_round(type)) ) ) )
+ #define _PDCLIB_va_copy( dest, src ) ( (dest) = (src), (void)0 )
+ #define _PDCLIB_va_end( ap ) ( (ap) = (void *)0, (void)0 )
+ #define _PDCLIB_va_start( ap, parmN ) ( (ap) = (char *) &parmN + ( _PDCLIB_va_round(parmN) ), (void)0 )
+#else
+ #error Compiler/Architecture support please
+#endif
/* -------------------------------------------------------------------------- */
/* OS "glue", part 1 */
to an appropriate value. (Too small, and malloc() will call the kernel too
often. Too large, and you will waste memory.)
*/
-#define _PDCLIB_PAGESIZE 4096
+#define _PDCLIB_MALLOC_PAGESIZE 4096
+#define _PDCLIB_MALLOC_ALIGN 16
+#define _PDCLIB_MALLOC_GRANULARITY 64*1024
+#define _PDCLIB_MALLOC_TRIM_THRESHOLD 2*1024*1024
+#define _PDCLIB_MALLOC_MMAP_THRESHOLD 256*1024
+#define _PDCLIB_MALLOC_RELEASE_CHECK_RATE 4095
-/* Set this to the minimum memory node size. Any malloc() for a smaller size
- will be satisfied by a malloc() of this size instead (to avoid excessive
- fragmentation).
-*/
-#define _PDCLIB_MINALLOC 8
+/* TODO: Better document these */
-/* I/O ---------------------------------------------------------------------- */
+/* Locale --------------------------------------------------------------------*/
-/* The type of the file descriptor returned by _PDCLIB_open(). */
-typedef int _PDCLIB_fd_t;
+/* Locale method. See _PDCLIB_locale.h */
+#define _PDCLIB_LOCALE_METHOD _PDCLIB_LOCALE_METHOD_TSS
-/* The value (of type _PDCLIB_fd_t) returned by _PDCLIB_open() if the operation
- failed.
-*/
-#define _PDCLIB_NOHANDLE ( (_PDCLIB_fd_t) -1 )
+/* wchar_t encoding */
+#define _PDCLIB_WCHAR_ENCODING _PDCLIB_WCHAR_ENCODING_UCS4
+
+/* I/O ---------------------------------------------------------------------- */
/* The default size for file buffers. Must be at least 256. */
#define _PDCLIB_BUFSIZ 1024
#define _PDCLIB_FILENAME_MAX 128
/* Maximum length of filenames generated by tmpnam(). (See tmpfile.c.) */
-#define _PDCLIB_L_tmpnam 46
+#define _PDCLIB_L_tmpnam 128
/* Number of distinct file names that can be generated by tmpnam(). */
#define _PDCLIB_TMP_MAX 50
*/
#define _PDCLIB_UNGETCBUFSIZE 1
-/* errno -------------------------------------------------------------------- */
-
-/* These are the values that _PDCLIB_errno can be set to by the library.
-
- By keeping PDCLib's errno in the _PDCLIB_* namespace, the library is capable
- to "translate" between errno values used by the hosting operating system and
- those used and passed out by the library.
-
- Example: In the example platform, the remove() function uses the unlink()
- system call as backend. Linux sets its errno to EISDIR if you try to unlink()
- a directory, but POSIX demands EPERM. Within the remove() function, you can
- catch the 'errno == EISDIR', and set '_PDCLIB_errno = _PDCLIB_EPERM'. Anyone
- using PDCLib's <errno.h> will "see" EPERM instead of EISDIR (the _PDCLIB_*
- prefix removed by <errno.h> mechanics).
-
- If you do not want that kind of translation, you might want to "match" the
- values used by PDCLib with those used by the host OS, as to avoid confusion.
-
- The C standard only defines three distinct errno values: ERANGE, EDOM, and
- EILSEQ. The standard leaves it up to "the implementation" whether there are
- any more beyond those three. There is some controversy as to whether errno is
- such a good idea at all, so you might want to come up with a different error
- reporting facility for your platform.
-
- Things used to say "Since errno values beyond the three defined by the
- standard are not portable anyway (unless you look at POSIX), having your own
- error reporting facility would not hurt anybody either." at this point.
- However, then somebody birthed C++11 into the world, which copied POSIX's
- errno values into C++. Yes, even EINTR. Therefore, this library defines
- them. That said, thats nothing stopping you from using your own error
- reporting facility for things outside the C library.
-
- Sometimes the standard says to set errno to indicate an error, but does not
- prescribe a value. We will use a value from the following list. If POSIX
- defines a value, we use that; otherwise, we use as seems suitable.
-
- If porting to a system which uses an errno-like reporting system (e.g. a
- UNIX), you'll probably want to define them to match what the OS uses
-*/
-/* C errno values */
-#define _PDCLIB_ERANGE 1
-#define _PDCLIB_EDOM 2
-#define _PDCLIB_EILSEQ 3
-
-/* C++11/POSIX errno values */
-#define _PDCLIB_E2BIG 4
-#define _PDCLIB_ECONNRESET 5
-#define _PDCLIB_EISCONN 6
-#define _PDCLIB_ENOENT 7
-#define _PDCLIB_ENOTRECOVERABLE 8
-#define _PDCLIB_EROFS 9
-#define _PDCLIB_EACCES 10
-#define _PDCLIB_EDEADLK 11
-#define _PDCLIB_EISDIR 12
-#define _PDCLIB_ENOEXEC 13
-#define _PDCLIB_ENOTSOCK 14
-#define _PDCLIB_ESPIPE 15
-#define _PDCLIB_EADDRINUSE 16
-#define _PDCLIB_EDESTADDRREQ 17
-#define _PDCLIB_ELOOP 18
-#define _PDCLIB_ENOLCK 19
-#define _PDCLIB_ENOTSUPP 20
-#define _PDCLIB_ESRCH 21
-#define _PDCLIB_EADDRNOTAVAIL 22
-#define _PDCLIB_EMFILE 23
-#define _PDCLIB_ENOLINK 24
-#define _PDCLIB_ENOTTY 25
-#define _PDCLIB_ETIME 26
-#define _PDCLIB_EAFNOSUPPORT 27
-#define _PDCLIB_EEXIST 28
-#define _PDCLIB_EMLINK 29
-#define _PDCLIB_ENOMEM 30
-#define _PDCLIB_ENXIO 31
-#define _PDCLIB_ETIMEDOUT 32
-#define _PDCLIB_EAGAIN 33
-#define _PDCLIB_EFAULT 34
-#define _PDCLIB_EMSGSIZE 35
-#define _PDCLIB_ENOMSG 36
-#define _PDCLIB_EOPNOTSUPP 37
-#define _PDCLIB_ETXTBSY 38
-#define _PDCLIB_EALREADY 39
-#define _PDCLIB_EFBIG 40
-#define _PDCLIB_ENAMETOOLONG 41
-#define _PDCLIB_ENOPROTOOPT 42
-#define _PDCLIB_EOVERFLOW 43
-#define _PDCLIB_EWOULDBLOCK _PDCLIB_EAGAIN
-#define _PDCLIB_EBADF 44
-#define _PDCLIB_EHOSTUNREACH 45
-#define _PDCLIB_ENETDOWN 46
-#define _PDCLIB_ENOSPC 47
-#define _PDCLIB_EOWNERDEAD 48
-#define _PDCLIB_EXDEV 49
-#define _PDCLIB_EBADMSG 50
-#define _PDCLIB_EIDRM 51
-#define _PDCLIB_ENETRESET 52
-#define _PDCLIB_ENOSR 53
-#define _PDCLIB_EPERM 54
-#define _PDCLIB_EBUSY 55
-#define _PDCLIB_ENETUNREACH 56
-#define _PDCLIB_ENOSTR 57
-#define _PDCLIB_EPIPE 58
-#define _PDCLIB_ECANCELED 59
-#define _PDCLIB_EINPROGRESS 60
-#define _PDCLIB_ENFILE 61
-#define _PDCLIB_ENOSYS 62
-#define _PDCLIB_EPROTO 63
-#define _PDCLIB_ECHILD 64
-#define _PDCLIB_EINTR 65
-#define _PDCLIB_ENOBUFS 66
-#define _PDCLIB_ENOTCONN 67
-#define _PDCLIB_EPROTONOSUPPORT 68
-#define _PDCLIB_ECONNABORTED 69
-#define _PDCLIB_EINVAL 70
-#define _PDCLIB_ENODATA 71
-#define _PDCLIB_ENOTDIR 72
-#define _PDCLIB_EPROTOTYPE 73
-
#endif
projects / pdclib / blobdiff