https://github.com/matsumotory/mruby-pointer

Provide mruby C API which shared pointer between two mrb_states
https://github.com/matsumotory/mruby-pointer

Last synced: about 2 months ago
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Provide mruby C API which shared pointer between two mrb_states

• Host: GitHub
• URL: https://github.com/matsumotory/mruby-pointer
• Owner: matsumotory
• License: other
• Created: 2016-12-19T08:35:03.000Z (about 8 years ago)
• Default Branch: master
• Last Pushed: 2016-12-20T12:17:34.000Z (about 8 years ago)
• Last Synced: 2024-10-18T18:22:41.272Z (3 months ago)
• Language: C
• Size: 18.6 KB
• Stars: 3
• Watchers: 4
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# mruby-pointer   [![Build Status](https://travis-ci.org/matsumotory/mruby-pointer.svg?branch=master)](https://travis-ci.org/matsumotory/mruby-pointer)

Provide mruby C-API which shared pointer between two mrb_states

## install by mrbgems

- add conf.gem line to `build_config.rb`

```ruby

MRuby::Build.new do |conf|

    # ... (snip) ...

    conf.gem :github => 'matsumotory/mruby-pointer'

end

```

## Test

```

rake

```

## example

Please see [bintest/shared_ptr.c](bintest/shared_ptr.c)

```c

#include 

#include 

#include 

#include "mrb_pointer.h"

#include "mruby.h"

#include "mruby/compile.h"

static mrb_value mrb_pter_set(mrb_state *mrb, mrb_value self)

{ 

  char *str;

  mrb_get_args(mrb, "z", &str);

  mrb_udptr_set(mrb, (void *)strdup(str));

  return self;

}

static mrb_value mrb_pter_get(mrb_state *mrb, mrb_value self)

{ 

  char *str;

  str = (char *)mrb_udptr_get(mrb);

  return mrb_str_new_cstr(mrb, str);

}

const char *pter_set_code = "Pter.set('I am pter')";

const char *pter_get_code = "puts Pter.get";

int main(int argc, char *argv[])

{ 

  mrb_state *mrb_src = mrb_open();

  mrb_state *mrb_dst = mrb_open();

  struct RClass *pter_src = mrb_define_class(mrb_src, "Pter", mrb_src->object_class);

  struct RClass *pter_dst = mrb_define_class(mrb_dst, "Pter", mrb_dst->object_class);

  mrb_define_class_method(mrb_src, pter_src, "set", mrb_pter_set, MRB_ARGS_REQ(1));

  mrb_define_class_method(mrb_dst, pter_dst, "get", mrb_pter_get, MRB_ARGS_NONE());

  /* create a shared ptr object */

  mrb_udptr_init(mrb_src);

  /* set ptr on mrb_src into the shared ptr object */

  mrb_load_string(mrb_src, pter_set_code);

  /* copy the shared ptr object from mrb_src to mrb_dst */

  mrb_udptr_copy(mrb_src, mrb_dst);

  /* get ptr on mrb_src from shared ptr object on mrb_dst */

  mrb_load_string(mrb_dst, pter_get_code);

  mrb_udptr_free(mrb_src);

  mrb_close(mrb_src);

  mrb_close(mrb_dst);

  return 0;

}

```

- run

```

$ ./bintest/shared_ptr 

I am pter

```

### More example for redis

```c

#include 

#include "mrb_pointer.h"

#include "mruby.h"

#include "mruby/compile.h"

int main(int argc, char *argv[])

{

  mrb_state *mrb_src = mrb_open();

  mrb_state *mrb_dst = mrb_open();

  /* create a shared ptr object */

  mrb_udptr_init(mrb_src);

  /* set ptr on mrb_src into the shared ptr object */

  mrb_load_string(mrb_src, "Redis.connect_set_raw '127.0.0.1', 6379");

  /* copy the shared ptr object from mrb_src to mrb_dst */

  mrb_udptr_copy(mrb_src, mrb_dst);

  /* get ptr on mrb_src from shared ptr object on mrb_dst */

  mrb_load_string(mrb_dst, "redis = Redis.new; redis['hoge'] = 'foo'; p redis['hoge']");

  mrb_udptr_free(mrb_src);

  mrb_close(mrb_src);

  mrb_close(mrb_dst);

  return 0;

```

## License

under the MIT License:

- see LICENSE file