#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.
/* 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
/* <stdlib.h> defines the div() function family that allows taking quotient */
/* -------------------------------------------------------------------------- */
/* 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 signed int
+#define _PDCLIB_wchar unsigned int
+#define _PDCLIB_WCHAR UINT
-#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
*
* 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 ---------------------------------------------------------------------- */
-/* The type of the file descriptor returned by _PDCLIB_open(). */
-typedef int _PDCLIB_fd_t;
-
-/* The value (of type _PDCLIB_fd_t) returned by _PDCLIB_open() if the operation
- failed.
-*/
-#define _PDCLIB_NOHANDLE ( (_PDCLIB_fd_t) -1 )
-
/* 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
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