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author | Koichi Sasada <ko1@atdot.net> | 2019-11-07 16:58:00 +0900 |
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committer | Koichi Sasada <ko1@atdot.net> | 2019-11-08 09:09:29 +0900 |
commit | 46acd0075d80c2f886498f089fde1e9d795d50c4 (patch) | |
tree | a00dfbf124cd7e158e125549efa65cbfba394416 /builtin.c | |
parent | dddf5afb7947f5aba1ff875e9f5eb163f8c3d6c7 (diff) |
support builtin features with Ruby and C.
Support loading builtin features written in Ruby, which implement
with C builtin functions.
[Feature #16254]
Several features:
(1) Load .rb file at boottime with native binary.
Now, prelude.rb is loaded at boottime. However, this file is contained
into the interpreter as a text format and we need to compile it.
This patch contains a feature to load from binary format.
(2) __builtin_func() in Ruby call func() written in C.
In Ruby file, we can write `__builtin_func()` like method call.
However this is not a method call, but special syntax to call
a function `func()` written in C. C functions should be defined
in a file (same compile unit) which load this .rb file.
Functions (`func` in above example) should be defined with
(a) 1st parameter: rb_execution_context_t *ec
(b) rest parameters (0 to 15).
(c) VALUE return type.
This is very similar requirements for functions used by
rb_define_method(), however `rb_execution_context_t *ec`
is new requirement.
(3) automatic C code generation from .rb files.
tool/mk_builtin_loader.rb creates a C code to load .rb files
needed by miniruby and ruby command. This script is run by
BASERUBY, so *.rb should be written in BASERUBY compatbile
syntax. This script load a .rb file and find all of __builtin_
prefix method calls, and generate a part of C code to export
functions.
tool/mk_builtin_binary.rb creates a C code which contains
binary compiled Ruby files needed by ruby command.
Notes
Notes:
Merged: https://github.com/ruby/ruby/pull/2655
Diffstat (limited to 'builtin.c')
-rw-r--r-- | builtin.c | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/builtin.c b/builtin.c new file mode 100644 index 0000000000..44471f01e8 --- /dev/null +++ b/builtin.c @@ -0,0 +1,40 @@ +#include "internal.h" +#include "vm_core.h" +#include "iseq.h" +#include "builtin.h" + +#include "builtin_binary.inc" + +static const unsigned char* +builtin_lookup(const char *feature, size_t *psize) +{ + for (int i=0; i<BUILTIN_BINARY_SIZE; i++) { + if (strcmp(builtin_binary[i].feature, feature) == 0) { + *psize = builtin_binary[i].bin_size; + return builtin_binary[i].bin; + } + } + rb_bug("builtin_lookup: can not find %s\n", feature); +} + +void +rb_load_with_builtin_functions(const char *feature_name, const char *fname, const struct rb_builtin_function *table) +{ + // search binary + size_t size; + const unsigned char *bin = builtin_lookup(feature_name, &size); + + // load binary + GET_VM()->builtin_function_table = table; + const rb_iseq_t *iseq = rb_iseq_ibf_load_cstr((const char *)bin, size); + GET_VM()->builtin_function_table = NULL; + + // exec + rb_iseq_eval(iseq); +} + +void +Init_builtin(void) +{ + // +} |