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circuitpython/py/mpconfig.h

1490 lines
46 KiB

/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2013, 2014 Damien P. George
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#ifndef MICROPY_INCLUDED_PY_MPCONFIG_H
#define MICROPY_INCLUDED_PY_MPCONFIG_H
// This file contains default configuration settings for MicroPython.
// You can override any of the options below using mpconfigport.h file
// located in a directory of your port.
// mpconfigport.h is a file containing configuration settings for a
// particular port. mpconfigport.h is actually a default name for
// such config, and it can be overridden using MP_CONFIGFILE preprocessor
// define (you can do that by passing CFLAGS_EXTRA='-DMP_CONFIGFILE="<file.h>"'
// argument to make when using standard MicroPython makefiles).
// This is useful to have more than one config per port, for example,
// release vs debug configs, etc. Note that if you switch from one config
// to another, you must rebuild from scratch using "-B" switch to make.
#ifdef MP_CONFIGFILE
#include "mpconfigport_coverage.h"
#else
#include <mpconfigport.h>
#endif
// Is this a CircuitPython build?
#ifndef CIRCUITPY
#define CIRCUITPY 0
#endif
// Any options not explicitly set in mpconfigport.h will get default
// values below.
/*****************************************************************************/
/* Object representation */
// A MicroPython object is a machine word having the following form:
// - xxxx...xxx1 : a small int, bits 1 and above are the value
// - xxxx...xx10 : a qstr, bits 2 and above are the value
// - xxxx...xx00 : a pointer to an mp_obj_base_t (unless a fake object)
#define MICROPY_OBJ_REPR_A (0)
// A MicroPython object is a machine word having the following form:
// - xxxx...xx01 : a small int, bits 2 and above are the value
// - xxxx...xx11 : a qstr, bits 2 and above are the value
// - xxxx...xxx0 : a pointer to an mp_obj_base_t (unless a fake object)
#define MICROPY_OBJ_REPR_B (1)
// A MicroPython object is a machine word having the following form (called R):
// - iiiiiiii iiiiiiii iiiiiiii iiiiiii1 small int with 31-bit signed value
// - 01111111 1qqqqqqq qqqqqqqq qqqqq110 str with 20-bit qstr value
// - s1111111 10000000 00000000 00000010 +/- inf
// - s1111111 1xxxxxxx xxxxxxxx xxxxx010 nan, x != 0
// - seeeeeee efffffff ffffffff ffffff10 30-bit fp, e != 0xff
// - pppppppp pppppppp pppppppp pppppp00 ptr (4 byte alignment)
// Str and float stored as O = R + 0x80800000, retrieved as R = O - 0x80800000.
// This makes strs easier to encode/decode as they have zeros in the top 9 bits.
// This scheme only works with 32-bit word size and float enabled.
#define MICROPY_OBJ_REPR_C (2)
// A MicroPython object is a 64-bit word having the following form (called R):
// - seeeeeee eeeeffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff 64-bit fp, e != 0x7ff
// - s1111111 11110000 00000000 00000000 00000000 00000000 00000000 00000000 +/- inf
// - 01111111 11111000 00000000 00000000 00000000 00000000 00000000 00000000 normalised nan
// - 01111111 11111101 iiiiiiii iiiiiiii iiiiiiii iiiiiiii iiiiiiii iiiiiii1 small int
// - 01111111 11111110 00000000 00000000 qqqqqqqq qqqqqqqq qqqqqqqq qqqqqqq1 str
// - 01111111 11111100 00000000 00000000 pppppppp pppppppp pppppppp pppppp00 ptr (4 byte alignment)
// Stored as O = R + 0x8004000000000000, retrieved as R = O - 0x8004000000000000.
// This makes pointers have all zeros in the top 32 bits.
// Small-ints and strs have 1 as LSB to make sure they don't look like pointers
// to the garbage collector.
#define MICROPY_OBJ_REPR_D (3)
#ifndef MICROPY_OBJ_REPR
#define MICROPY_OBJ_REPR (MICROPY_OBJ_REPR_A)
#endif
/*****************************************************************************/
/* Memory allocation policy */
// Number of bytes in memory allocation/GC block. Any size allocated will be
// rounded up to be multiples of this.
#ifndef MICROPY_BYTES_PER_GC_BLOCK
#define MICROPY_BYTES_PER_GC_BLOCK (4 * BYTES_PER_WORD)
#endif
// Number of words allocated (in BSS) to the GC stack (minimum is 1)
#ifndef MICROPY_ALLOC_GC_STACK_SIZE
#define MICROPY_ALLOC_GC_STACK_SIZE (64)
#endif
// Be conservative and always clear to zero newly (re)allocated memory in the GC.
// This helps eliminate stray pointers that hold on to memory that's no longer
// used. It decreases performance due to unnecessary memory clearing.
// A memory manager which always clears memory can set this to 0.
// TODO Do analysis to understand why some memory is not properly cleared and
// find a more efficient way to clear it.
#ifndef MICROPY_GC_CONSERVATIVE_CLEAR
#define MICROPY_GC_CONSERVATIVE_CLEAR (MICROPY_ENABLE_GC)
#endif
py/gc: Implement GC running by allocation threshold. Currently, MicroPython runs GC when it could not allocate a block of memory, which happens when heap is exhausted. However, that policy can't work well with "inifinity" heaps, e.g. backed by a virtual memory - there will be a lot of swap thrashing long before VM will be exhausted. Instead, in such cases "allocation threshold" policy is used: a GC is run after some number of allocations have been made. Details vary, for example, number or total amount of allocations can be used, threshold may be self-adjusting based on GC outcome, etc. This change implements a simple variant of such policy for MicroPython. Amount of allocated memory so far is used for threshold, to make it useful to typical finite-size, and small, heaps as used with MicroPython ports. And such GC policy is indeed useful for such types of heaps too, as it allows to better control fragmentation. For example, if a threshold is set to half size of heap, then for an application which usually makes big number of small allocations, that will (try to) keep half of heap memory in a nice defragmented state for an occasional large allocation. For an application which doesn't exhibit such behavior, there won't be any visible effects, except for GC running more frequently, which however may affect performance. To address this, the GC threshold is configurable, and by default is off so far. It's configured with gc.threshold(amount_in_bytes) call (can be queries without an argument).
6 years ago
// Support automatic GC when reaching allocation threshold,
// configurable by gc.threshold().
#ifndef MICROPY_GC_ALLOC_THRESHOLD
#define MICROPY_GC_ALLOC_THRESHOLD (1)
#endif
// Number of bytes to allocate initially when creating new chunks to store
// interned string data. Smaller numbers lead to more chunks being needed
// and more wastage at the end of the chunk. Larger numbers lead to wasted
// space at the end when no more strings need interning.
#ifndef MICROPY_ALLOC_QSTR_CHUNK_INIT
#define MICROPY_ALLOC_QSTR_CHUNK_INIT (128)
#endif
// Max number of entries in newly allocated QSTR pools. Smaller numbers may make QSTR lookups
// slightly slower but reduce the waste of unused spots.
#ifndef MICROPY_QSTR_POOL_MAX_ENTRIES
#define MICROPY_QSTR_POOL_MAX_ENTRIES (64)
#endif
// Initial amount for lexer indentation level
#ifndef MICROPY_ALLOC_LEXER_INDENT_INIT
#define MICROPY_ALLOC_LEXER_INDENT_INIT (10)
#endif
// Increment for lexer indentation level
#ifndef MICROPY_ALLOC_LEXEL_INDENT_INC
#define MICROPY_ALLOC_LEXEL_INDENT_INC (8)
#endif
// Initial amount for parse rule stack
#ifndef MICROPY_ALLOC_PARSE_RULE_INIT
#define MICROPY_ALLOC_PARSE_RULE_INIT (64)
#endif
// Increment for parse rule stack
#ifndef MICROPY_ALLOC_PARSE_RULE_INC
#define MICROPY_ALLOC_PARSE_RULE_INC (16)
#endif
// Initial amount for parse result stack
#ifndef MICROPY_ALLOC_PARSE_RESULT_INIT
#define MICROPY_ALLOC_PARSE_RESULT_INIT (32)
#endif
// Increment for parse result stack
#ifndef MICROPY_ALLOC_PARSE_RESULT_INC
#define MICROPY_ALLOC_PARSE_RESULT_INC (16)
#endif
// Strings this length or less will be interned by the parser
#ifndef MICROPY_ALLOC_PARSE_INTERN_STRING_LEN
#define MICROPY_ALLOC_PARSE_INTERN_STRING_LEN (10)
#endif
// Number of bytes to allocate initially when creating new chunks to store
// parse nodes. Small leads to fragmentation, large leads to excess use.
#ifndef MICROPY_ALLOC_PARSE_CHUNK_INIT
#define MICROPY_ALLOC_PARSE_CHUNK_INIT (128)
#endif
// Initial amount for ids in a scope
#ifndef MICROPY_ALLOC_SCOPE_ID_INIT
#define MICROPY_ALLOC_SCOPE_ID_INIT (4)
#endif
// Increment for ids in a scope
#ifndef MICROPY_ALLOC_SCOPE_ID_INC
#define MICROPY_ALLOC_SCOPE_ID_INC (6)
#endif
// Maximum length of a path in the filesystem
// So we can allocate a buffer on the stack for path manipulation in import
#ifndef MICROPY_ALLOC_PATH_MAX
#define MICROPY_ALLOC_PATH_MAX (512)
#endif
// Initial size of module dict
#ifndef MICROPY_MODULE_DICT_SIZE
#define MICROPY_MODULE_DICT_SIZE (1)
#endif
// Whether realloc/free should be passed allocated memory region size
// You must enable this if MICROPY_MEM_STATS is enabled
#ifndef MICROPY_MALLOC_USES_ALLOCATED_SIZE
#define MICROPY_MALLOC_USES_ALLOCATED_SIZE (0)
#endif
// Number of bytes used to store qstr length
// Dictates hard limit on maximum Python identifier length, but 1 byte
// (limit of 255 bytes in an identifier) should be enough for everyone
#ifndef MICROPY_QSTR_BYTES_IN_LEN
#define MICROPY_QSTR_BYTES_IN_LEN (1)
#endif
// Number of bytes used to store qstr hash
#ifndef MICROPY_QSTR_BYTES_IN_HASH
#define MICROPY_QSTR_BYTES_IN_HASH (2)
#endif
// Avoid using C stack when making Python function calls. C stack still
// may be used if there's no free heap.
#ifndef MICROPY_STACKLESS
#define MICROPY_STACKLESS (0)
#endif
// Never use C stack when making Python function calls. This may break
// testsuite as will subtly change which exception is thrown in case
// of too deep recursion and other similar cases.
#ifndef MICROPY_STACKLESS_STRICT
#define MICROPY_STACKLESS_STRICT (0)
#endif
// Don't use alloca calls. As alloca() is not part of ANSI C, this
// workaround option is provided for compilers lacking this de-facto
// standard function. The way it works is allocating from heap, and
// relying on garbage collection to free it eventually. This is of
// course much less optimal than real alloca().
#if defined(MICROPY_NO_ALLOCA) && MICROPY_NO_ALLOCA
#undef alloca
#define alloca(x) m_malloc(x)
#endif
// Number of atb indices to cache. Allocations of fewer blocks will be faster
// because the search will be accelerated by the index cache. This only applies
// to short lived allocations because we assume the long lived allocations are
// contiguous.
#ifndef MICROPY_ATB_INDICES
#define MICROPY_ATB_INDICES (8)
#endif
/*****************************************************************************/
/* MicroPython emitters */
// Whether to support loading of persistent code
#ifndef MICROPY_PERSISTENT_CODE_LOAD
#define MICROPY_PERSISTENT_CODE_LOAD (0)
#endif
// Whether to support saving of persistent code
#ifndef MICROPY_PERSISTENT_CODE_SAVE
#define MICROPY_PERSISTENT_CODE_SAVE (0)
#endif
// Whether generated code can persist independently of the VM/runtime instance
// This is enabled automatically when needed by other features
#ifndef MICROPY_PERSISTENT_CODE
#define MICROPY_PERSISTENT_CODE (MICROPY_PERSISTENT_CODE_LOAD || MICROPY_PERSISTENT_CODE_SAVE || MICROPY_MODULE_FROZEN_MPY)
#endif
// Whether to emit x64 native code
#ifndef MICROPY_EMIT_X64
#define MICROPY_EMIT_X64 (0)
#endif
// Whether to emit x86 native code
#ifndef MICROPY_EMIT_X86
#define MICROPY_EMIT_X86 (0)
#endif
// Whether to emit thumb native code
#ifndef MICROPY_EMIT_THUMB
#define MICROPY_EMIT_THUMB (0)
#endif
// Whether to enable the thumb inline assembler
#ifndef MICROPY_EMIT_INLINE_THUMB
#define MICROPY_EMIT_INLINE_THUMB (0)
#endif
// Whether to enable ARMv7-M instruction support in the Thumb2 inline assembler
#ifndef MICROPY_EMIT_INLINE_THUMB_ARMV7M
#define MICROPY_EMIT_INLINE_THUMB_ARMV7M (1)
#endif
// Whether to enable float support in the Thumb2 inline assembler
#ifndef MICROPY_EMIT_INLINE_THUMB_FLOAT
#define MICROPY_EMIT_INLINE_THUMB_FLOAT (1)
#endif
// Whether to emit ARM native code
#ifndef MICROPY_EMIT_ARM
#define MICROPY_EMIT_ARM (0)
#endif
// Whether to emit Xtensa native code
#ifndef MICROPY_EMIT_XTENSA
#define MICROPY_EMIT_XTENSA (0)
#endif
// Whether to enable the Xtensa inline assembler
#ifndef MICROPY_EMIT_INLINE_XTENSA
#define MICROPY_EMIT_INLINE_XTENSA (0)
#endif
// Convenience definition for whether any native emitter is enabled
#define MICROPY_EMIT_NATIVE (MICROPY_EMIT_X64 || MICROPY_EMIT_X86 || MICROPY_EMIT_THUMB || MICROPY_EMIT_ARM || MICROPY_EMIT_XTENSA)
// Convenience definition for whether any inline assembler emitter is enabled
#define MICROPY_EMIT_INLINE_ASM (MICROPY_EMIT_INLINE_THUMB || MICROPY_EMIT_INLINE_XTENSA)
/*****************************************************************************/
/* Compiler configuration */
// Whether to include the compiler
#ifndef MICROPY_ENABLE_COMPILER
#define MICROPY_ENABLE_COMPILER (1)
#endif
// Whether the compiler is dynamically configurable (ie at runtime)
#ifndef MICROPY_DYNAMIC_COMPILER
#define MICROPY_DYNAMIC_COMPILER (0)
#endif
// Configure dynamic compiler macros
#if MICROPY_DYNAMIC_COMPILER
#define MICROPY_OPT_CACHE_MAP_LOOKUP_IN_BYTECODE_DYNAMIC (mp_dynamic_compiler.opt_cache_map_lookup_in_bytecode)
#define MICROPY_PY_BUILTINS_STR_UNICODE_DYNAMIC (mp_dynamic_compiler.py_builtins_str_unicode)
#else
#define MICROPY_OPT_CACHE_MAP_LOOKUP_IN_BYTECODE_DYNAMIC MICROPY_OPT_CACHE_MAP_LOOKUP_IN_BYTECODE
#define MICROPY_PY_BUILTINS_STR_UNICODE_DYNAMIC MICROPY_PY_BUILTINS_STR_UNICODE
#endif
// Whether to enable constant folding; eg 1+2 rewritten as 3
#ifndef MICROPY_COMP_CONST_FOLDING
#define MICROPY_COMP_CONST_FOLDING (1)
#endif
// Whether to enable lookup of constants in modules; eg module.CONST
#ifndef MICROPY_COMP_MODULE_CONST
#define MICROPY_COMP_MODULE_CONST (0)
#endif
// Whether to enable constant optimisation; id = const(value)
#ifndef MICROPY_COMP_CONST
#define MICROPY_COMP_CONST (1)
#endif
// Whether to enable optimisation of: a, b = c, d
// Costs 124 bytes (Thumb2)
#ifndef MICROPY_COMP_DOUBLE_TUPLE_ASSIGN
#define MICROPY_COMP_DOUBLE_TUPLE_ASSIGN (1)
#endif
// Whether to enable optimisation of: a, b, c = d, e, f
// Requires MICROPY_COMP_DOUBLE_TUPLE_ASSIGN and costs 68 bytes (Thumb2)
#ifndef MICROPY_COMP_TRIPLE_TUPLE_ASSIGN
#define MICROPY_COMP_TRIPLE_TUPLE_ASSIGN (0)
#endif
// Whether to enable optimisation of: return a if b else c
// Costs about 80 bytes (Thumb2) and saves 2 bytes of bytecode for each use
#ifndef MICROPY_COMP_RETURN_IF_EXPR
#define MICROPY_COMP_RETURN_IF_EXPR (0)
#endif
// Whether to include parsing of f-string literals
#ifndef MICROPY_COMP_FSTRING_LITERAL
#define MICROPY_COMP_FSTRING_LITERAL (1)
#endif
/*****************************************************************************/
/* Internal debugging stuff */
// Whether to collect memory allocation stats
#ifndef MICROPY_MEM_STATS
#define MICROPY_MEM_STATS (0)
#endif
// Whether to build functions that print debugging info:
// mp_bytecode_print
// mp_parse_node_print
#ifndef MICROPY_DEBUG_PRINTERS
#define MICROPY_DEBUG_PRINTERS (0)
#endif
// Whether to enable all debugging outputs (it will be extremely verbose)
#ifndef MICROPY_DEBUG_VERBOSE
#define MICROPY_DEBUG_VERBOSE (0)
#endif
/*****************************************************************************/
/* Optimisations */
// Whether to use computed gotos in the VM, or a switch
// Computed gotos are roughly 10% faster, and increase VM code size by a little
// Note: enabling this will use the gcc-specific extensions of ranged designated
// initialisers and addresses of labels, which are not part of the C99 standard.
#ifndef MICROPY_OPT_COMPUTED_GOTO
#define MICROPY_OPT_COMPUTED_GOTO (0)
#endif
// Whether to cache result of map lookups in LOAD_NAME, LOAD_GLOBAL, LOAD_ATTR,
// STORE_ATTR bytecodes. Uses 1 byte extra RAM for each of these opcodes and
// uses a bit of extra code ROM, but greatly improves lookup speed.
#ifndef MICROPY_OPT_CACHE_MAP_LOOKUP_IN_BYTECODE
#define MICROPY_OPT_CACHE_MAP_LOOKUP_IN_BYTECODE (0)
#endif
// Whether to use fast versions of bitwise operations (and, or, xor) when the
// arguments are both positive. Increases Thumb2 code size by about 250 bytes.
#ifndef MICROPY_OPT_MPZ_BITWISE
#define MICROPY_OPT_MPZ_BITWISE (0)
#endif
/*****************************************************************************/
/* Python internal features */
// Whether to enable import of external modules
// When disabled, only importing of built-in modules is supported
// When enabled, a port must implement mp_import_stat (among other things)
#ifndef MICROPY_ENABLE_EXTERNAL_IMPORT
#define MICROPY_ENABLE_EXTERNAL_IMPORT (1)
#endif
// Whether to use the POSIX reader for importing files
#ifndef MICROPY_READER_POSIX
#define MICROPY_READER_POSIX (0)
#endif
// Whether to use the VFS reader for importing files
#ifndef MICROPY_READER_VFS
#define MICROPY_READER_VFS (0)
#endif
// Number of VFS mounts to persist across soft-reset.
#ifndef MICROPY_FATFS_NUM_PERSISTENT
#define MICROPY_FATFS_NUM_PERSISTENT (0)
#endif
// Hook for the VM at the start of the opcode loop (can contain variable
// definitions usable by the other hook functions)
#ifndef MICROPY_VM_HOOK_INIT
#define MICROPY_VM_HOOK_INIT
#endif
// Hook for the VM during the opcode loop (but only after jump opcodes)
#ifndef MICROPY_VM_HOOK_LOOP
#define MICROPY_VM_HOOK_LOOP
#endif
// Hook for the VM just before return opcode is finished being interpreted
#ifndef MICROPY_VM_HOOK_RETURN
#define MICROPY_VM_HOOK_RETURN
#endif
// Whether to include the garbage collector
#ifndef MICROPY_ENABLE_GC
#define MICROPY_ENABLE_GC (0)
#endif
// Whether to enable finalisers in the garbage collector (ie call __del__)
#ifndef MICROPY_ENABLE_FINALISER
#define MICROPY_ENABLE_FINALISER (0)
#endif
py: Introduce a Python stack for scoped allocation. This patch introduces the MICROPY_ENABLE_PYSTACK option (disabled by default) which enables a "Python stack" that allows to allocate and free memory in a scoped, or Last-In-First-Out (LIFO) way, similar to alloca(). A new memory allocation API is introduced along with this Py-stack. It includes both "local" and "nonlocal" LIFO allocation. Local allocation is intended to be equivalent to using alloca(), whereby the same function must free the memory. Nonlocal allocation is where another function may free the memory, so long as it's still LIFO. Follow-up patches will convert all uses of alloca() and VLA to the new scoped allocation API. The old behaviour (using alloca()) will still be available, but when MICROPY_ENABLE_PYSTACK is enabled then alloca() is no longer required or used. The benefits of enabling this option are (or will be once subsequent patches are made to convert alloca()/VLA): - Toolchains without alloca() can use this feature to obtain correct and efficient scoped memory allocation (compared to using the heap instead of alloca(), which is slower). - Even if alloca() is available, enabling the Py-stack gives slightly more efficient use of stack space when calling nested Python functions, due to the way that compilers implement alloca(). - Enabling the Py-stack with the stackless mode allows for even more efficient stack usage, as well as retaining high performance (because the heap is no longer used to build and destroy stackless code states). - With Py-stack and stackless enabled, Python-calling-Python is no longer recursive in the C mp_execute_bytecode function. The micropython.pystack_use() function is included to measure usage of the Python stack.
5 years ago
// Whether to enable a separate allocator for the Python stack.
// If enabled then the code must call mp_pystack_init before mp_init.
#ifndef MICROPY_ENABLE_PYSTACK
#define MICROPY_ENABLE_PYSTACK (0)
#endif
// Number of bytes that memory returned by mp_pystack_alloc will be aligned by.
#ifndef MICROPY_PYSTACK_ALIGN
#define MICROPY_PYSTACK_ALIGN (8)
#endif
// Whether to check C stack usage. C stack used for calling Python functions,
// etc. Not checking means segfault on overflow.
#ifndef MICROPY_STACK_CHECK
#define MICROPY_STACK_CHECK (0)
#endif
// Whether to measure maximum stack excursion
#ifndef MICROPY_MAX_STACK_USAGE
#define MICROPY_MAX_STACK_USAGE (0)
#endif
// Whether to have an emergency exception buffer
#ifndef MICROPY_ENABLE_EMERGENCY_EXCEPTION_BUF
#define MICROPY_ENABLE_EMERGENCY_EXCEPTION_BUF (0)
#endif
#if MICROPY_ENABLE_EMERGENCY_EXCEPTION_BUF
# ifndef MICROPY_EMERGENCY_EXCEPTION_BUF_SIZE
# define MICROPY_EMERGENCY_EXCEPTION_BUF_SIZE (0) // 0 - implies dynamic allocation
# endif
#endif
// Whether to provide the mp_kbd_exception object, and micropython.kbd_intr function
#ifndef MICROPY_KBD_EXCEPTION
#define MICROPY_KBD_EXCEPTION (0)
#endif
// Prefer to raise KeyboardInterrupt asynchronously (from signal or interrupt
// handler) - if supported by a particular port.
#ifndef MICROPY_ASYNC_KBD_INTR
#define MICROPY_ASYNC_KBD_INTR (0)
#endif
// Whether to include REPL helper function
#ifndef MICROPY_HELPER_REPL
#define MICROPY_HELPER_REPL (0)
#endif
// Whether to include emacs-style readline behavior in REPL
#ifndef MICROPY_REPL_EMACS_KEYS
#define MICROPY_REPL_EMACS_KEYS (0)
#endif
// Whether to implement auto-indent in REPL
#ifndef MICROPY_REPL_AUTO_INDENT
#define MICROPY_REPL_AUTO_INDENT (0)
#endif
// Whether port requires event-driven REPL functions
#ifndef MICROPY_REPL_EVENT_DRIVEN
#define MICROPY_REPL_EVENT_DRIVEN (0)
#endif
// Whether to include lexer helper function for unix
#ifndef MICROPY_HELPER_LEXER_UNIX
#define MICROPY_HELPER_LEXER_UNIX (0)
#endif
// Long int implementation
#define MICROPY_LONGINT_IMPL_NONE (0)
#define MICROPY_LONGINT_IMPL_LONGLONG (1)
#define MICROPY_LONGINT_IMPL_MPZ (2)
#ifndef MICROPY_LONGINT_IMPL
#define MICROPY_LONGINT_IMPL (MICROPY_LONGINT_IMPL_NONE)
#endif
#if MICROPY_LONGINT_IMPL == MICROPY_LONGINT_IMPL_LONGLONG
typedef long long mp_longint_impl_t;
#endif
// Whether to include information in the byte code to determine source
// line number (increases RAM usage, but doesn't slow byte code execution)
#ifndef MICROPY_ENABLE_SOURCE_LINE
#define MICROPY_ENABLE_SOURCE_LINE (0)
#endif
// Whether to include doc strings (increases RAM usage)
#ifndef MICROPY_ENABLE_DOC_STRING
#define MICROPY_ENABLE_DOC_STRING (0)
#endif
// Exception messages are short static strings
#define MICROPY_ERROR_REPORTING_TERSE (1)
// Exception messages provide basic error details
#define MICROPY_ERROR_REPORTING_NORMAL (2)
// Exception messages provide full info, e.g. object names
#define MICROPY_ERROR_REPORTING_DETAILED (3)
#ifndef MICROPY_ERROR_REPORTING
#define MICROPY_ERROR_REPORTING (MICROPY_ERROR_REPORTING_NORMAL)
#endif
// Whether issue warnings during compiling/execution
#ifndef MICROPY_WARNINGS
#define MICROPY_WARNINGS (0)
#endif
// This macro is used when printing runtime warnings and errors
#ifndef MICROPY_ERROR_PRINTER
#define MICROPY_ERROR_PRINTER (&mp_plat_print)
#endif
// Float and complex implementation
#define MICROPY_FLOAT_IMPL_NONE (0)
#define MICROPY_FLOAT_IMPL_FLOAT (1)
#define MICROPY_FLOAT_IMPL_DOUBLE (2)
#ifndef MICROPY_FLOAT_IMPL
#define MICROPY_FLOAT_IMPL (MICROPY_FLOAT_IMPL_NONE)
#endif
#if MICROPY_FLOAT_IMPL == MICROPY_FLOAT_IMPL_FLOAT
#define MICROPY_PY_BUILTINS_FLOAT (1)
#define MICROPY_FLOAT_CONST(x) x##F
#define MICROPY_FLOAT_C_FUN(fun) fun##f
typedef float mp_float_t;
#elif MICROPY_FLOAT_IMPL == MICROPY_FLOAT_IMPL_DOUBLE
#define MICROPY_PY_BUILTINS_FLOAT (1)
#define MICROPY_FLOAT_CONST(x) x
#define MICROPY_FLOAT_C_FUN(fun) fun
typedef double mp_float_t;
#else
#define MICROPY_PY_BUILTINS_FLOAT (0)
#endif
#ifndef MICROPY_PY_BUILTINS_COMPLEX
#define MICROPY_PY_BUILTINS_COMPLEX (MICROPY_PY_BUILTINS_FLOAT)
#endif
// Whether to provide a high-quality hash for float and complex numbers.
// Otherwise the default is a very simple but correct hashing function.
#ifndef MICROPY_FLOAT_HIGH_QUALITY_HASH
#define MICROPY_FLOAT_HIGH_QUALITY_HASH (0)
#endif
// Enable features which improve CPython compatibility
// but may lead to more code size/memory usage.
// TODO: Originally intended as generic category to not
// add bunch of once-off options. May need refactoring later
#ifndef MICROPY_CPYTHON_COMPAT
#define MICROPY_CPYTHON_COMPAT (1)
#endif
// Perform full checks as done by CPython. Disabling this
// may produce incorrect results, if incorrect data is fed,
// but should not lead to MicroPython crashes or similar
// grave issues (in other words, only user app should be,
// affected, not system).
#ifndef MICROPY_FULL_CHECKS
#define MICROPY_FULL_CHECKS (1)
#endif
// Whether POSIX-semantics non-blocking streams are supported
#ifndef MICROPY_STREAMS_NON_BLOCK
#define MICROPY_STREAMS_NON_BLOCK (0)
#endif
// Whether to provide stream functions with POSIX-like signatures
// (useful for porting existing libraries to MicroPython).
#ifndef MICROPY_STREAMS_POSIX_API
#define MICROPY_STREAMS_POSIX_API (0)
#endif
// Whether to call __init__ when importing builtin modules for the first time
#ifndef MICROPY_MODULE_BUILTIN_INIT
#define MICROPY_MODULE_BUILTIN_INIT (0)
#endif
// Whether module weak links are supported
#ifndef MICROPY_MODULE_WEAK_LINKS
#define MICROPY_MODULE_WEAK_LINKS (0)
#endif
// Whether frozen modules are supported in the form of strings
#ifndef MICROPY_MODULE_FROZEN_STR
#define MICROPY_MODULE_FROZEN_STR (0)
#endif
// Whether frozen modules are supported in the form of .mpy files
#ifndef MICROPY_MODULE_FROZEN_MPY
#define MICROPY_MODULE_FROZEN_MPY (0)
#endif
// Convenience macro for whether frozen modules are supported
#ifndef MICROPY_MODULE_FROZEN
#define MICROPY_MODULE_FROZEN (MICROPY_MODULE_FROZEN_STR || MICROPY_MODULE_FROZEN_MPY)
#endif
// Whether you can override builtins in the builtins module
#ifndef MICROPY_CAN_OVERRIDE_BUILTINS
#define MICROPY_CAN_OVERRIDE_BUILTINS (0)
#endif
// Whether to check that the "self" argument of a builtin method has the
// correct type. Such an explicit check is only needed if a builtin
// method escapes to Python land without a first argument, eg
// list.append([], 1). Without this check such calls will have undefined
// behaviour (usually segfault) if the first argument is the wrong type.
#ifndef MICROPY_BUILTIN_METHOD_CHECK_SELF_ARG
#define MICROPY_BUILTIN_METHOD_CHECK_SELF_ARG (1)
#endif
// Whether to use internally defined errno's (otherwise system provided ones)
#ifndef MICROPY_USE_INTERNAL_ERRNO
#define MICROPY_USE_INTERNAL_ERRNO (0)
#endif
// Whether to use internally defined *printf() functions (otherwise external ones)
#ifndef MICROPY_USE_INTERNAL_PRINTF
#define MICROPY_USE_INTERNAL_PRINTF (1)
#endif
// Support for internal scheduler
#ifndef MICROPY_ENABLE_SCHEDULER
#define MICROPY_ENABLE_SCHEDULER (0)
#endif
// Maximum number of entries in the scheduler
#ifndef MICROPY_SCHEDULER_DEPTH
#define MICROPY_SCHEDULER_DEPTH (4)
#endif
// Support for generic VFS sub-system
#ifndef MICROPY_VFS
#define MICROPY_VFS (0)
#endif
// Support for VFS POSIX component, to mount a POSIX filesystem within VFS
#ifndef MICROPY_VFS
#define MICROPY_VFS_POSIX (0)
#endif
// Support for VFS FAT component, to mount a FAT filesystem within VFS
#ifndef MICROPY_VFS
#define MICROPY_VFS_FAT (0)
#endif
/*****************************************************************************/
/* Fine control over Python builtins, classes, modules, etc */
// Whether to support multiple inheritance of Python classes. Multiple
// inheritance makes some C functions inherently recursive, and adds a bit of
// code overhead.
#ifndef MICROPY_MULTIPLE_INHERITANCE
#define MICROPY_MULTIPLE_INHERITANCE (1)
#endif
// Whether to implement attributes on functions
#ifndef MICROPY_PY_FUNCTION_ATTRS
#define MICROPY_PY_FUNCTION_ATTRS (0)
#endif
py/objtype: Optimise instance get/set/del by skipping special accessors. This patch is a code optimisation, trading text bytes for speed. On pyboard it's an increase of 0.06% in code size for a gain (in pystone performance) of roughly 6.5%. The patch optimises load/store/delete of attributes in user defined classes by not looking up special accessors (@property, __get__, __delete__, __set__, __setattr__ and __getattr_) if they are guaranteed not to exist in the class. Currently, if you do my_obj.foo() then the runtime has to do a few checks to see if foo is a property or has __get__, and if so delegate the call. And for stores things like my_obj.foo = 1 has to first check if foo is a property or has __set__ defined on it. Doing all those checks each and every time the attribute is accessed has a performance penalty. This patch eliminates all those checks for cases when it's guaranteed that the checks will always fail, ie no attributes are properties nor have any special accessor methods defined on them. To make this guarantee it checks all attributes of a user-defined class when it is first created. If any of the attributes of the user class are properties or have special accessors, or any of the base classes of the user class have them, then it sets a flag in the class to indicate that special accessors must be checked for. Then in the load/store/delete code it checks this flag to see if it can take the shortcut and optimise the lookup. It's an optimisation that's pretty widely applicable because it improves lookup performance for all methods of user defined classes, and stores of attributes, at least for those that don't have special accessors. And, it allows to enable descriptors with minimal additional runtime overhead if they are not used for a particular user class. There is one restriction on dynamic class creation that has been introduced by this patch: a user-defined class cannot go from zero special accessors to one special accessor (or more) after that class has been subclassed. If the script attempts this an AttributeError is raised (see addition to tests/misc/non_compliant.py for an example of this case). The cost in code space bytes for the optimisation in this patch is: unix x64: +528 unix nanbox: +508 stm32: +192 cc3200: +200 esp8266: +332 esp32: +244 Performance tests that were done: - on unix x86-64, pystone improved by about 5% - on pyboard, pystone improved by about 6.5%, from 1683 up to 1794 - on pyboard, bm_chaos (from CPython benchmark suite) improved by about 5% - on esp32, pystone improved by about 30% (but there are caching effects) - on esp32, bm_chaos improved by about 11%
5 years ago
// Whether to support the descriptors __get__, __set__, __delete__
// This costs some code size and makes load/store/delete of instance
// attributes slower for the classes that use this feature
#ifndef MICROPY_PY_DESCRIPTORS
#define MICROPY_PY_DESCRIPTORS (0)
#endif
// Whether to support class __delattr__ and __setattr__ methods
py/objtype: Optimise instance get/set/del by skipping special accessors. This patch is a code optimisation, trading text bytes for speed. On pyboard it's an increase of 0.06% in code size for a gain (in pystone performance) of roughly 6.5%. The patch optimises load/store/delete of attributes in user defined classes by not looking up special accessors (@property, __get__, __delete__, __set__, __setattr__ and __getattr_) if they are guaranteed not to exist in the class. Currently, if you do my_obj.foo() then the runtime has to do a few checks to see if foo is a property or has __get__, and if so delegate the call. And for stores things like my_obj.foo = 1 has to first check if foo is a property or has __set__ defined on it. Doing all those checks each and every time the attribute is accessed has a performance penalty. This patch eliminates all those checks for cases when it's guaranteed that the checks will always fail, ie no attributes are properties nor have any special accessor methods defined on them. To make this guarantee it checks all attributes of a user-defined class when it is first created. If any of the attributes of the user class are properties or have special accessors, or any of the base classes of the user class have them, then it sets a flag in the class to indicate that special accessors must be checked for. Then in the load/store/delete code it checks this flag to see if it can take the shortcut and optimise the lookup. It's an optimisation that's pretty widely applicable because it improves lookup performance for all methods of user defined classes, and stores of attributes, at least for those that don't have special accessors. And, it allows to enable descriptors with minimal additional runtime overhead if they are not used for a particular user class. There is one restriction on dynamic class creation that has been introduced by this patch: a user-defined class cannot go from zero special accessors to one special accessor (or more) after that class has been subclassed. If the script attempts this an AttributeError is raised (see addition to tests/misc/non_compliant.py for an example of this case). The cost in code space bytes for the optimisation in this patch is: unix x64: +528 unix nanbox: +508 stm32: +192 cc3200: +200 esp8266: +332 esp32: +244 Performance tests that were done: - on unix x86-64, pystone improved by about 5% - on pyboard, pystone improved by about 6.5%, from 1683 up to 1794 - on pyboard, bm_chaos (from CPython benchmark suite) improved by about 5% - on esp32, pystone improved by about 30% (but there are caching effects) - on esp32, bm_chaos improved by about 11%
5 years ago
// This costs some code size and makes store/delete of instance