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Improve `mruby-os-memsize`
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If it qualify a return type that is not a pointer with `const`, the
compiler ignores it.
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And, in the calculation of the instance variable size, the fraction was
always rounded down because of division of integers, so fix it.
At the same time, test items that are no longer passed due to this
change are deleted.
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It happens when a hash made empty calls `rehash`.
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To make debugging easy, and to improve the performance little bit.
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The responsibility moved to caller to avoid confusion. Currently the
function is called from only 2 places, so it is relatively easy to
ensure not to update `gray_list` in the caller. But the assumption
may change in the future.
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`mrb_ary_modify` calls `mrb_write_barrier`, so can cause the same
problem of the past `push`. It is provided for use-level API.
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When the array is very big, the simpler `mrb_write_barrier` causes
calling `gc_mark_children` for big arrays repeatedly. That would hinder
performance very badly.
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`C` retrieves a `mrb_value` that refers a class/module.
`c` retrieves a `struct RClass*` pointer to a class/module.
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This bug has been there since mruby 1.4.0 (2018-04).
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Add ObjectSpace.memsize_of
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This function is removed by 9644ad5.
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Should not free the pointer in `realloc` since it can cause
use-after-free problem.
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The POSIX `realloc` keep the original pointer untouched, so it can
easily leads to memory leakage. `mrb_realloc()` should handle those
bookkeeping, while `mrb_realloc_simple()` keeps the original `realloc`
behavior.
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Use simpler `mrb_get_argc()` and `mrb_get_arg1()` instead.
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C implementation used `mrb_funcall()` that bypassed many optimization.
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`mrb_get_arg1()` raises `ArgumentError` if the method does not receive one
argument.
And replaces all `mrb_get_args(mrb, "o", &arg)` by the new function.
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commit 2d7d545c4c4bfce7fdcbcbe9baaeb437915742f0
Merge: 625a1249 b178914b
Author: Yukihiro "Matz" Matsumoto <[email protected]>
Date: Fri Jun 5 14:35:13 2020 +0900
Merge branch 'fix-mrb_open-with-nomem' of https://github.com/dearblue/mruby into dearblue-fix-mrb_open-with-nomem
commit b178914b111dda79a8f36ec4eb3e9d37b76f982e
Author: dearblue <[email protected]>
Date: Sat Jan 19 22:22:44 2019 +0900
Fix invalid pointer free inside other heap's block
1. `e = mrb_obj_alloc(...)`
2. `e->stack = mrb->c->stack` (`mrb->c->stack` is anywhere in the range `stbase...stend`)
3. And raised exception by `mrb_malloc()`!
4. `mrb_free(e->stack)` by GC part (wrong free)
commit 52e3d5d8585daf86af3ed12db5ab0efefbc9b956
Author: dearblue <[email protected]>
Date: Sat Jan 19 21:55:36 2019 +0900
Fix memory leak for temporary symbols when out of memory
commit 4c5499b88e47cc6012ad7d7379cb6bc74c6a0b60
Author: dearblue <[email protected]>
Date: Sun Jan 20 11:42:07 2019 +0900
Fix uninitialized pointer dereference for debug section
commit 8e993167dec62a9709d6faacd517729ddcedf4f9
Author: dearblue <[email protected]>
Date: Sun Jan 20 11:41:09 2019 +0900
Fix memory leak for temporary filenames when out of memory
commit 8b422577e6eae68a28121b88421d937e8707b487
Author: dearblue <[email protected]>
Date: Sun Jan 20 10:57:51 2019 +0900
Fix memory leak for irep when out of memory
commit 6b35ebf49a0aa3edb6bbda770ed58681e9c2e6af
Author: dearblue <[email protected]>
Date: Sun Jan 20 10:55:50 2019 +0900
Fix uninitialized pointer dereference when do not finished initializing irep
commit 2531f2631e67e0462749618e2344c733a29238f0
Author: dearblue <[email protected]>
Date: Sun Jan 20 10:48:15 2019 +0900
Fix NULL pointer dereference when do not finished initializing irep
commit e2d6896ebad13694800af49c2625e106b8440ddf
Author: dearblue <[email protected]>
Date: Sat Jan 19 12:54:19 2019 +0900
Fix memory leak for irep when out of memory by `mrb_proc_new()`
commit b6214ff8a0a1c73bc9554e39053878ac50bb683f
Author: dearblue <[email protected]>
Date: Sat Jan 19 12:53:07 2019 +0900
Fix memory leak for `khash_t` in `kh_init_size()` when out of memory by `kh_alloc()`
commit 19162dd6c11f0093d0011e7cab83b8f9e84c2c07
Author: dearblue <[email protected]>
Date: Sun Jan 20 02:15:07 2019 +0900
Fix memory leak for symbol string when out of memory in `kh_put()`
commit 15e67297ff54bc14ef359d6d1e745d760a4a255a
Author: dearblue <[email protected]>
Date: Sun Jan 20 02:12:24 2019 +0900
Fix keep wrong symbol index when out of memory
commit 3f8e2b375244f5441e8d62efa13c6e6a9afecb14
Author: dearblue <[email protected]>
Date: Sun Jan 20 02:08:13 2019 +0900
Fix keep wrong symbol capacity when out of memory
commit a3cfe755ab3e758046c3f4e30938ac8d567ed046
Author: dearblue <[email protected]>
Date: Sat Jan 19 10:11:37 2019 +0900
Fix NULL pointer dereference `mrb->c` by `mark_context()`
commit d9c7b6be6eb54630b64eea5c35be241e551676e5
Author: dearblue <[email protected]>
Date: Sun Jan 20 15:25:09 2019 +0900
Fix protect exception for print error message
commit 100642750e4d549f2e8050f8d6cabdf8825d4495
Author: dearblue <[email protected]>
Date: Sun Jan 20 11:59:02 2019 +0900
Protect exception for mruby core initialization
commit 7a0418304ec70764fa215bef3599f5f735222075
Author: dearblue <[email protected]>
Date: Fri Jan 18 20:38:27 2019 +0900
Fix memory leak for string object when out of memory
The `mrb_str_pool()` function has a path to call `malloc()` twice.
If occurs `NoMemoryError` exception in second `malloc()`,
first `malloc()` pointer is not freed.
commit fef1c152ce4e52b9e4a34dc23aca5b02907ac639
Author: dearblue <[email protected]>
Date: Sat Jan 19 13:05:09 2019 +0900
Fix stack overflow when out of memory
As a result of this change, no backtrace information is set
for NoMemoryError (`mrb->nomem_err`).
Detailes:
When generating a backtrace, called `mrb_intern_lit()`,
`mrb_str_new_cstr()` and `mrb_obj_iv_set()` function with
`exc_debug_info()` function in `src/error.c`.
If a `NoMemoryError` exception occurs at this time,
the `exc_debug_info()` function will be called again,
and in the same way `NoMemoryError` exception raised will result
in an infinite loop to occurs stack overflow (and SIGSEGV).
commit da7d7f881bbbad9988a3a2b7bad8f2b72ff06bc6
Author: dearblue <[email protected]>
Date: Sun Jan 20 12:00:38 2019 +0900
Fix NULL pointer dereference `mrb->nomem_err` when not initialized
Add internal functions (not `static`):
* `mrb_raise_nomemory()`
* `mrb_core_init_abort()`
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shuujii/set-MRB_STR_ASCII-flag-to-some-stringize-methods
Set `MRB_STR_ASCII` flag to some stringize methods
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Formerly, `__send__(*args)` modified `args` with `Array#shift`.
This bug affects optcarrot.
This changeset avoids the array destruction by using
`args = args[1, len-1]`.
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### Example
```ruby
# example.rb
class A
def eql?(o)
p self.class
super
end
def hash
1
end
end
class B < A; end
h = {A.new => 1}
h[B.new]
```
#### Before this patch:
```console
$ bin/mruby example.rb
A
```
#### After this patch (same as Ruby)
```console
$ bin/mruby example.rb
B
```
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The `FLAG_BYTEORDER_NATIVE` and `FLAG_BYTEORDER_NONATIVE` are no longer
needed.
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`cmpnum` function may return `nil` on error.
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Since `mruby 2.0`, compiled bytecode no longer depends on the
endian of the machine.
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Which loads 16bit integer to the register. The instruction number should
be reorder on massive instruction refactoring. The instruction is added
for `mruby/c` which had performance issue with `OP_EXT`. With this
instruction, `mruby/c` VM can just raise errors on `OP_EXT` extension
instructions.
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`mrb_run` requires to push callinfo stack before calling, which is very
hard from outside of `vm.c`. So there should be virtually no correct
usage of the function, hence the cause of #4488. We removed it.
You can use `mrb_top_run(mrb, proc, self, 0)` instead of
`mrb_run(mrb, proc self)`.
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When using `mrb_any_to_s()` for debugging purposes, giving an object
whose class is `NULL` no longer causes a SIGSEGV and no crash.
This is achieved by making `mrb_class_name()` and `mrb_str_cat_cstr()`
null safe.
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