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Rename `MRB_WORDBOX_USE_HEAP_FLOAT` to `MRB_WORDBOX_NO_FLOAT_TRUNCATE'.
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- `MRB_USE_ETEXT_RO_DATA_P`: use `etext` and `edata`
- `MRB_NO_DEFAULT_RO_DATA_P`: not use the default `mrb_ro_data_p()`
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`MRB_WORDBOX_USE_HEAP_FLOAT` instead of `MRB_USE_FLOAT_FULL_PRECISION`.
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* use predefined `mrb_ro_data_p()` for user-mode Linux and macOS
* define `MRB_LINK_TIME_RO_DATA_P` if predefined one is used
* configure macro `MRB_USE_LINK_TIME_RO_DATA_P` is no longer used
* contributions for new platforms are welcome
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Embedding reduce memory consumption, sacrificing precision. It clips least
significant 2 bits from `mrb_float`, so if you need to keep float precision,
define `MRB_USE_FLOAT_FULL_PRECISION`.
`MRB_WORD_BOXING` and `MRB_INT64`:
`mrb_float` (`double`) is embedded in `mrb_value` clipped last 2 bits.
`MRB_WORD_BOXING` and `MRB_INT64` and `MRB_USE_FLOAT_FULL_PRECISION`:
`mrb_float` is allocated in the heaps wrapped by `struct RFloat`.
`MRB_WORD_BOXING` and `MRB_INT32` and `MRB_USE_FLOAT32`:
`mrb_float` (`float`) is embedded in `mrb_value` clipped last 2 bits.
In addition, to reserve bit space in the `mrb_value`, maximum inline
symbol length become 4 (instead of 5) in the configuration.
`MRB_WORD_BOXING` and `MRB_INT32`:
Assume `MRB_USE_FLOAT_FULL_PRECISION` and allocate Float values in heap.
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- stdlib.h
- stddef.h
- stdint.h
- stdarg.h
- limits.h
- float.h
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- move `TRUE/FALSE` definition from `mrbconf.h` (not configurable)
- use C/C++ definition of boolean type for `mrb_bool`
The fix is originally written by @take-cheeze.
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The GitHub Super Linter is a more robust and better supported
tool than the current GitHub Actions we are using.
Running these checks:
ERROR_ON_MISSING_EXEC_BIT: true
VALIDATE_BASH: true
VALIDATE_BASH_EXEC: true
VALIDATE_EDITORCONFIG: true
VALIDATE_MARKDOWN: true
VALIDATE_SHELL_SHFMT: true
VALIDATE_YAML: true
https://github.com/marketplace/actions/super-linter
https://github.com/github/super-linter
Added the GitHub Super Linter badge to the README.
Also updated the pre-commit framework and added
more documentation on pre-commit.
Added one more pre-commit check: check-executables-have-shebangs
Added one extra check for merge conflicts to our
GitHub Actions.
EditorConfig and Markdown linting.
Minor grammar and spelling fixes.
Update linter.yml
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| Previous Name | New Name |
|------------------------------|-------------------------|
| MRB_ENABLE_ALL_SYMBOLS | MRB_USE_ALL_SYMBOLS |
| MRB_ENABLE_SYMBOLL_ALL | MRB_USE_ALL_SYMBOLS |
| MRB_ENABLE_CXX_ABI | MRB_USE_CXX_ABI |
| MRB_ENABLE_CXX_EXCEPTION | MRB_USE_CXX_EXCEPTION |
| MRB_ENABLE_DEBUG_HOOK | MRB_USE_DEBUG_HOOK |
| MRB_DISABLE_DIRECT_THREADING | MRB_NO_DIRECT_THREADING |
| MRB_DISABLE_STDIO | MRB_NO_STDIO |
| ENABLE_LINENOISE | MRB_USE_LINENOISE |
| ENABLE_READLINE | MRB_USE_READLINE |
| DISABLE_MIRB_UNDERSCORE | MRB_NO_MIRB_UNDERSCORE |
| DISABLE_GEMS | MRB_NO_GEMS |
* `MRB_ENABLE_SYMBOLL_ALL` seems to be a typo, so it is fixed.
* `MRB_` prefix is added to those without.
* The previous names can also be used for compatibility.
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They are not used from the beginning.
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- `MRB_WITHOUT_FLOAT` => `MRB_NO_FLOAT`
- `MRB_USE_FLOAT` => `MRB_USE_FLOAT32`
The former is to use `USE_XXX` naming convention. The latter is to make
sure `float` is 32bit float and not floating point number in general.
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It's the first change of renaming configuration options to `MRB_XXX` to
`MRB_USE_XXX` or `MRB_NO_XXX`.
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On 64bit platforms: `MRB_NAN_BOXING`
On 32bit platforms: `MRB_WORD_BOXING`
On debugging: `MRB_NO_BOXING`
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Introduced `MRB_NO_METHOD_CACHE` which is inverse of `MRB_METHOD_CACHE`
that should be enabled intestinally. In addition, the default cache is
made bigger (128 -> 256).
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Because we can't use the highest 2 bits of function pointers.
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Because we can't use the highest 2 bits of function pointers.
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I think they can always be enabled because the regular expression literal is
always enabled.
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linked programs
In lld linked programs, .rodata comes before .text, thus mrb_ro_data_p
will return false for strings in .rodata. Change the lower bound from
_etext to __ehdr_start to catch these cases. This works for ld.bfd, gold
and lld, and it does not have false positives even if .init_array does
not exist.
Remove the branch that uses _edata: strings in .data can be modified so
this is semantically incorrect. Delete the __APPLE__ branch (its
manpages say get_etext() and get_edata() are strongly discouraged).
.init_array has been adopted by most ELF platforms to supersede .ctors.
Neither _etext nor _edata is used, so rename MRB_USE_ETEXT_EDATA to
MRB_USE_EHDR_START.
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`MRB_METHOD_TABLE_INLINE` was fragile. It requires `-falign-functions=n`.
On platform that uses higher bits of function pointers, you can use new
`MRB_METHOD_T_STRUCT` configuration macro.
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Not only mruby, it is one of the difficult things to adjust the performance vs. memory efficiency of the software.
If the approximate target device is divided and the adjustment value for it is prepared by default, it is a good indicator to do fine adjustment.
This PR divides into four profiles.
***Caution: There is no basis for the definitions in the patch.***
- `MRB_CONSTRAINED_BASELINE_PROFILE` - for microprocessors. Reduce memory consumption.
- `MRB_BASELINE_PROFILE` - Default value of mruby.
- `MRB_MAIN_PROFILE` - For desktop computers. Assume that a huge amount of RAM, 10 MiB or more, is on board.
- `MRB_HIGH_PROFILE` - for servers. Assume that mruby VM has a long life.
As you can see the profile name has been ~~stolen~~ imitated from H.264.
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- (Modify) `MRB_INT16`
- (Add) `MRB_INT32`
- (Modify) `MRB_INT64`
- (Add) `MRB_USE_ETEXT_EDATA`
- (Add) `MRB_NO_INIT_ARRAY_START
- (Add) `MRB_WITHOUT_FLOAT`
- (Add) `MRB_METHOD_CACHE`
- (Add) `MRB_METHOD_CACHE_SIZE`
- (Add) `MRB_METHOD_TABLE_INLINE
- (Add) `MRB_ENABLE_ALL_SYMBOLS`
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`cpp` does not raise error on undefined macro access in condition.
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You had to define this macro on big endian platforms, but it is very
error-prone. So define the macro automatically if possible.
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It was default on Linux. Abandoned for 2 reasons:
* some cross-platform compiler defines `__linux__` even on bare metal
environment (RTL8196 (MIPS big endian soc) for example).
* some compilers do not align functions pointers so that we need to
specify `-falign-functions=n` (where n>1). It's not suitable for
default configuration.
By our measurement, `mrbtest` consumes 400KB less memory. So if your
target machine is memory tight, add the following command-line options
to `GCC` (unfortunately `clang` does not support `-falign-functions`).
`-falign-functions=2 -DMRB_METHOD_TABLE_INLINE`
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Now the method tables (in classes/modules and caches) keeps C function
pointers without wrapping in `struct RProc` objects. For the sake of
portability, `mrb_method_t` is represented by the struct and union, but
if the most significant bit of the pointer is not used by the platform,
`mrb_method_t` should be packed in `uintptr_t` to reduce memory usage.
`MRB_METHOD_TABLE_INLINE` is turned on by default for linux.
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Unless `MRB_NAN_BOXING` is specified.
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changes:
* rename DISABLE_STDIO -> MRB_DISABLE_STDIO
* rename ENABLE_DEBUG -> MRB_ENABLE_DEBUG_HOOK
* no more opposite macro definitions (e.g. ENABLE_STDIO, DISABLE_DEBUG).
* rewrite above macro references throughout the code.
* update documents
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define MRB_UTF8_STRING (in mrbconf.h) to enable UTF-8 support.
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