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46acd0075d
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.
40 lines
966 B
C
40 lines
966 B
C
#include "internal.h"
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#include "vm_core.h"
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#include "iseq.h"
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#include "builtin.h"
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#include "builtin_binary.inc"
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static const unsigned char*
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builtin_lookup(const char *feature, size_t *psize)
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{
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for (int i=0; i<BUILTIN_BINARY_SIZE; i++) {
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if (strcmp(builtin_binary[i].feature, feature) == 0) {
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*psize = builtin_binary[i].bin_size;
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return builtin_binary[i].bin;
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}
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}
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rb_bug("builtin_lookup: can not find %s\n", feature);
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}
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void
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rb_load_with_builtin_functions(const char *feature_name, const char *fname, const struct rb_builtin_function *table)
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{
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// search binary
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size_t size;
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const unsigned char *bin = builtin_lookup(feature_name, &size);
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// load binary
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GET_VM()->builtin_function_table = table;
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const rb_iseq_t *iseq = rb_iseq_ibf_load_cstr((const char *)bin, size);
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GET_VM()->builtin_function_table = NULL;
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// exec
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rb_iseq_eval(iseq);
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}
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void
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Init_builtin(void)
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{
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//
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}
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