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config.h
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/**************************************************************************/
/* */
/* OCaml */
/* */
/* Xavier Leroy and Damien Doligez, INRIA Rocquencourt */
/* */
/* Copyright 1996 Institut National de Recherche en Informatique et */
/* en Automatique. */
/* */
/* All rights reserved. This file is distributed under the terms of */
/* the GNU Lesser General Public License version 2.1, with the */
/* special exception on linking described in the file LICENSE. */
/* */
/**************************************************************************/
#ifndef CAML_CONFIG_H
#define CAML_CONFIG_H
/* CR ocaml 5 all-runtime5: remove this and all uses of it */
#define CAML_RUNTIME_5
/* CAML_NAME_SPACE was introduced in OCaml 3.08 to declare compatibility with
the newly caml_-prefixed names of C runtime functions and to disable the
definition of compatibility macros for the un-prefixed names. The
compatibility layer was removed in OCaml 5.0, so CAML_NAME_SPACE is the
default. */
#ifndef CAML_NAME_SPACE
#define CAML_NAME_SPACE
#endif
#include "m.h"
/* If supported, tell gcc that we can use 32-bit code addresses for
* threaded code, unless we are compiled for a shared library (-fPIC option) */
#ifdef HAS_ARCH_CODE32
#ifndef __PIC__
# define ARCH_CODE32
#endif /* __PIC__ */
#endif /* HAS_ARCH_CODE32 */
/* No longer used in the codebase, but kept because it was exported */
#define INT64_LITERAL(s) s ## LL
#if defined(_MSC_VER) && !defined(__cplusplus)
#define Caml_inline static __inline
#else
#define Caml_inline static inline
#endif
#include "s.h"
#ifndef CAML_CONFIG_H_NO_TYPEDEFS
#include <stddef.h>
#if defined(HAS_LOCALE_H) || defined(HAS_XLOCALE_H)
#define HAS_LOCALE
#endif
#ifdef HAS_STDINT_H
#include <stdint.h>
#endif
/* Disable the mingw-w64 *printf shims */
#if defined(CAML_INTERNALS) && defined(__MINGW32__)
/* Headers may have already included <_mingw.h>, so #undef if necessary. */
#ifdef __USE_MINGW_ANSI_STDIO
#undef __USE_MINGW_ANSI_STDIO
#endif
/* <stdio.h> must either be #include'd before this header or
__USE_MINGW_ANSI_STDIO needs to be 0 when <stdio.h> is processed. The final
effect will be the same - stdio.h will define snprintf and misc.h will make
snprintf a macro (referring to caml_snprintf). */
#define __USE_MINGW_ANSI_STDIO 0
#endif
#if defined(__MINGW32__) || (defined(_MSC_VER) && _MSC_VER < 1800)
#define ARCH_SIZET_PRINTF_FORMAT "I"
#else
#define ARCH_SIZET_PRINTF_FORMAT "z"
#endif
/* Types for 32-bit integers, 64-bit integers, and
native integers (as wide as a pointer type) */
#ifndef ARCH_INT32_TYPE
#if SIZEOF_INT == 4
#define ARCH_INT32_TYPE int
#define ARCH_UINT32_TYPE unsigned int
#define ARCH_INT32_PRINTF_FORMAT ""
#elif SIZEOF_LONG == 4
#define ARCH_INT32_TYPE long
#define ARCH_UINT32_TYPE unsigned long
#define ARCH_INT32_PRINTF_FORMAT "l"
#elif SIZEOF_SHORT == 4
#define ARCH_INT32_TYPE short
#define ARCH_UINT32_TYPE unsigned short
#define ARCH_INT32_PRINTF_FORMAT ""
#else
#error "No 32-bit integer type available"
#endif
#endif
#if defined(__MINGW32__) && !__USE_MINGW_ANSI_STDIO
#define ARCH_INT64_TYPE long long
#define ARCH_UINT64_TYPE unsigned long long
#define ARCH_INT64_PRINTF_FORMAT "I64"
#elif defined(_MSC_VER)
#define ARCH_INT64_TYPE __int64
#define ARCH_UINT64_TYPE unsigned __int64
#define ARCH_INT64_PRINTF_FORMAT "I64"
#else
#if SIZEOF_LONG == 8
#define ARCH_INT64_TYPE long
#define ARCH_UINT64_TYPE unsigned long
#define ARCH_INT64_PRINTF_FORMAT "l"
#elif SIZEOF_LONGLONG == 8
#define ARCH_INT64_TYPE long long
#define ARCH_UINT64_TYPE unsigned long long
#define ARCH_INT64_PRINTF_FORMAT "ll"
#else
#error "No 64-bit integer type available"
#endif
#endif
#ifndef HAS_STDINT_H
/* Not a C99 compiler, typically MSVC. Define the C99 types we use. */
typedef ARCH_INT32_TYPE int32_t;
typedef ARCH_UINT32_TYPE uint32_t;
typedef ARCH_INT64_TYPE int64_t;
typedef ARCH_UINT64_TYPE uint64_t;
#if SIZEOF_SHORT == 2
typedef short int16_t;
typedef unsigned short uint16_t;
#else
#error "No 16-bit integer type available"
#endif
typedef unsigned char uint8_t;
#endif
#if SIZEOF_PTR == SIZEOF_LONG
/* Standard models: ILP32 or I32LP64 */
typedef long intnat;
typedef unsigned long uintnat;
#define ARCH_INTNAT_PRINTF_FORMAT "l"
#elif SIZEOF_PTR == SIZEOF_INT
/* Hypothetical IP32L64 model */
typedef int intnat;
typedef unsigned int uintnat;
#define ARCH_INTNAT_PRINTF_FORMAT ""
#elif SIZEOF_PTR == 8
/* Win64 model: IL32P64 */
typedef int64_t intnat;
typedef uint64_t uintnat;
#define ARCH_INTNAT_PRINTF_FORMAT ARCH_INT64_PRINTF_FORMAT
#else
#error "No integer type available to represent pointers"
#endif
#define UINTNAT_MAX ((uintnat)-1)
#endif /* CAML_CONFIG_H_NO_TYPEDEFS */
/* Endianness of floats */
/* ARCH_FLOAT_ENDIANNESS encodes the byte order of doubles as follows:
the value [0xabcdefgh] means that the least significant byte of the
float is at byte offset [a], the next lsb at [b], ..., and the
most significant byte at [h]. */
#if defined(__arm__) && !defined(__ARM_EABI__)
#define ARCH_FLOAT_ENDIANNESS 0x45670123
#elif defined(ARCH_BIG_ENDIAN)
#define ARCH_FLOAT_ENDIANNESS 0x76543210
#else
#define ARCH_FLOAT_ENDIANNESS 0x01234567
#endif
/* We use threaded code interpretation if the compiler provides labels
as first-class values (GCC 2.x). */
#if defined(__GNUC__) && __GNUC__ >= 2 && !defined(DEBUG) \
&& !defined (SHRINKED_GNUC)
#define THREADED_CODE
#endif
/* Memory model parameters */
/* The size of a page for memory management (in bytes) is [1 << Page_log].
[Page_size] must be a multiple of [sizeof (value)].
[Page_log] must be be >= 8 and <= 20.
Do not change the definition of [Page_size]. */
#define Page_log 12 /* A page is 4 kilobytes. */
#define Page_size (1 << Page_log)
/* Initial size of stack (bytes). */
#ifdef DEBUG
#define Stack_init_bsize (64 * sizeof(value))
#else
#define Stack_init_bsize (4096 * sizeof(value))
#endif
/* Minimum free size of stack (bytes); below that, it is reallocated. */
#define Stack_threshold_words 32
#define Stack_threshold (Stack_threshold_words * sizeof(value))
/* Number of words used in the control structure at the start of a stack
(see fiber.h) */
#ifdef ARCH_SIXTYFOUR
#define Stack_ctx_words (6 + 1)
#else
#define Stack_ctx_words (6 + 2)
#endif
/* Default maximum size of the stack (words). */
/* (1 Gib for 64-bit platforms, 512 Mib for 32-bit platforms) */
#define Max_stack_def (128 * 1024 * 1024)
/* Maximum size of a block allocated in the young generation (words). */
/* Must be > 4 */
#define Max_young_wosize 256
#define Max_young_whsize (Whsize_wosize (Max_young_wosize))
/* Minimum size of the minor zone (words).
This must be at least [Max_young_wosize + 1]. */
#define Minor_heap_min (Max_young_wosize + 1)
/* Default size of the minor zone. (words) */
#define Minor_heap_def 1048576
/* Minimum size increment when growing the heap (words).
Must be a multiple of [Page_size / sizeof (value)]. */
#define Heap_chunk_min (15 * Page_size)
/* Default speed setting for the major GC. The heap will grow until
the dead objects and the free list represent this percentage of the
total size of live objects. */
#define Percent_free_def 160
/* Default setting for the major GC slice smoothing window: 1
(i.e. no smoothing)
*/
#define Major_window_def 1
/* Maximum size of the major GC slice smoothing window. */
#define Max_major_window 50
/* Default setting for the ratio of custom garbage to major heap size.
Documented in gc.mli */
#define Custom_major_ratio_def 44
/* Default setting for the ratio of custom garbage to minor heap size.
Documented in gc.mli */
#define Custom_minor_ratio_def 100
/* Default setting for maximum size of custom objects counted as garbage
in the minor heap.
Documented in gc.mli */
#define Custom_minor_max_bsz_def 8192
/* Minimum amount of work to do in a major GC slice. */
#define Major_slice_work_min 512
/* Default allocation policy. */
#define Allocation_policy_def caml_policy_best_fit
/* Default size of runtime_events ringbuffers, in words, in powers of two */
#define Default_runtime_events_log_wsize 16
/* Assumed size of cache line. This value can be bigger than the actual L1
cache line size. Atomics allocated with aligned constructor are
memory-aligned this value to avoid false sharing of cache line. */
#if defined(TARGET_s390x)
#define Cache_line_bsize 256
#elif defined(TARGET_arm64) || defined(TARGET_power)
#define Cache_line_bsize 128
#elif defined(TARGET_amd64) || defined(TARGET_riscv)
#define Cache_line_bsize 64
#elif (!defined(NATIVE_CODE))
#define Cache_line_bsize 64
#endif
#endif /* CAML_CONFIG_H */