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ruby--ruby/ext/fiddle/fiddle.c

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#include <fiddle.h>
VALUE mFiddle;
VALUE rb_eFiddleDLError;
VALUE rb_eFiddleError;
void Init_fiddle_pointer(void);
void Init_fiddle_pinned(void);
#ifdef HAVE_RUBY_MEMORY_VIEW_H
void Init_fiddle_memory_view(void);
#endif
/*
* call-seq: Fiddle.malloc(size)
*
* Allocate +size+ bytes of memory and return the integer memory address
* for the allocated memory.
*/
static VALUE
rb_fiddle_malloc(VALUE self, VALUE size)
{
void *ptr;
ptr = (void*)ruby_xcalloc(1, NUM2SIZET(size));
return PTR2NUM(ptr);
}
/*
* call-seq: Fiddle.realloc(addr, size)
*
* Change the size of the memory allocated at the memory location +addr+ to
* +size+ bytes. Returns the memory address of the reallocated memory, which
* may be different than the address passed in.
*/
static VALUE
rb_fiddle_realloc(VALUE self, VALUE addr, VALUE size)
{
void *ptr = NUM2PTR(addr);
ptr = (void*)ruby_xrealloc(ptr, NUM2SIZET(size));
return PTR2NUM(ptr);
}
/*
* call-seq: Fiddle.free(addr)
*
* Free the memory at address +addr+
*/
VALUE
rb_fiddle_free(VALUE self, VALUE addr)
{
void *ptr = NUM2PTR(addr);
ruby_xfree(ptr);
return Qnil;
}
/*
* call-seq: Fiddle.dlunwrap(addr)
*
* Returns the hexadecimal representation of a memory pointer address +addr+
*
* Example:
*
* lib = Fiddle.dlopen('/lib64/libc-2.15.so')
* => #<Fiddle::Handle:0x00000001342460>
*
* lib['strcpy'].to_s(16)
* => "7f59de6dd240"
*
* Fiddle.dlunwrap(Fiddle.dlwrap(lib['strcpy'].to_s(16)))
* => "7f59de6dd240"
*/
VALUE
rb_fiddle_ptr2value(VALUE self, VALUE addr)
{
return (VALUE)NUM2PTR(addr);
}
/*
* call-seq: Fiddle.dlwrap(val)
*
* Returns a memory pointer of a function's hexadecimal address location +val+
*
* Example:
*
* lib = Fiddle.dlopen('/lib64/libc-2.15.so')
* => #<Fiddle::Handle:0x00000001342460>
*
* Fiddle.dlwrap(lib['strcpy'].to_s(16))
* => 25522520
*/
static VALUE
rb_fiddle_value2ptr(VALUE self, VALUE val)
{
return PTR2NUM((void*)val);
}
void Init_fiddle_handle(void);
void
Init_fiddle(void)
{
/*
* Document-module: Fiddle
*
* A libffi wrapper for Ruby.
*
* == Description
*
* Fiddle is an extension to translate a foreign function interface (FFI)
* with ruby.
*
* It wraps {libffi}[http://sourceware.org/libffi/], a popular C library
* which provides a portable interface that allows code written in one
* language to call code written in another language.
*
* == Example
*
* Here we will use Fiddle::Function to wrap {floor(3) from
* libm}[http://linux.die.net/man/3/floor]
*
* require 'fiddle'
*
* libm = Fiddle.dlopen('/lib/libm.so.6')
*
* floor = Fiddle::Function.new(
* libm['floor'],
* [Fiddle::TYPE_DOUBLE],
* Fiddle::TYPE_DOUBLE
* )
*
* puts floor.call(3.14159) #=> 3.0
*
*
*/
mFiddle = rb_define_module("Fiddle");
/*
* Document-class: Fiddle::Error
*
* Generic error class for Fiddle
*/
rb_eFiddleError = rb_define_class_under(mFiddle, "Error", rb_eStandardError);
/*
* Ruby installed by RubyInstaller for Windows always require
* bundled Fiddle because ruby_installer/runtime/dll_directory.rb
* requires Fiddle. It's used by
* rubygems/defaults/operating_system.rb. It means that the
* bundled Fiddle is always required on initialization.
*
* We just remove existing Fiddle::DLError here to override
* the bundled Fiddle.
*/
if (rb_const_defined(mFiddle, rb_intern("DLError"))) {
rb_const_remove(mFiddle, rb_intern("DLError"));
}
/*
* Document-class: Fiddle::DLError
*
* standard dynamic load exception
*/
rb_eFiddleDLError = rb_define_class_under(mFiddle, "DLError", rb_eFiddleError);
/* Document-const: TYPE_VOID
*
* C type - void
*/
rb_define_const(mFiddle, "TYPE_VOID", INT2NUM(TYPE_VOID));
/* Document-const: TYPE_VOIDP
*
* C type - void*
*/
rb_define_const(mFiddle, "TYPE_VOIDP", INT2NUM(TYPE_VOIDP));
/* Document-const: TYPE_CHAR
*
* C type - char
*/
rb_define_const(mFiddle, "TYPE_CHAR", INT2NUM(TYPE_CHAR));
/* Document-const: TYPE_SHORT
*
* C type - short
*/
rb_define_const(mFiddle, "TYPE_SHORT", INT2NUM(TYPE_SHORT));
/* Document-const: TYPE_INT
*
* C type - int
*/
rb_define_const(mFiddle, "TYPE_INT", INT2NUM(TYPE_INT));
/* Document-const: TYPE_LONG
*
* C type - long
*/
rb_define_const(mFiddle, "TYPE_LONG", INT2NUM(TYPE_LONG));
#if HAVE_LONG_LONG
/* Document-const: TYPE_LONG_LONG
*
* C type - long long
*/
rb_define_const(mFiddle, "TYPE_LONG_LONG", INT2NUM(TYPE_LONG_LONG));
#endif
#ifdef TYPE_INT8_T
/* Document-const: TYPE_INT8_T
*
* C type - int8_t
*/
rb_define_const(mFiddle, "TYPE_INT8_T", INT2NUM(TYPE_INT8_T));
#endif
#ifdef TYPE_INT16_T
/* Document-const: TYPE_INT16_T
*
* C type - int16_t
*/
rb_define_const(mFiddle, "TYPE_INT16_T", INT2NUM(TYPE_INT16_T));
#endif
#ifdef TYPE_INT32_T
/* Document-const: TYPE_INT32_T
*
* C type - int32_t
*/
rb_define_const(mFiddle, "TYPE_INT32_T", INT2NUM(TYPE_INT32_T));
#endif
#ifdef TYPE_INT64_T
/* Document-const: TYPE_INT64_T
*
* C type - int64_t
*/
rb_define_const(mFiddle, "TYPE_INT64_T", INT2NUM(TYPE_INT64_T));
#endif
/* Document-const: TYPE_FLOAT
*
* C type - float
*/
rb_define_const(mFiddle, "TYPE_FLOAT", INT2NUM(TYPE_FLOAT));
/* Document-const: TYPE_DOUBLE
*
* C type - double
*/
rb_define_const(mFiddle, "TYPE_DOUBLE", INT2NUM(TYPE_DOUBLE));
#ifdef HAVE_FFI_PREP_CIF_VAR
/* Document-const: TYPE_VARIADIC
*
* C type - ...
*/
rb_define_const(mFiddle, "TYPE_VARIADIC", INT2NUM(TYPE_VARIADIC));
#endif
/* Document-const: TYPE_CONST_STRING
*
* C type - const char* ('\0' terminated const char*)
*/
rb_define_const(mFiddle, "TYPE_CONST_STRING", INT2NUM(TYPE_CONST_STRING));
/* Document-const: TYPE_SIZE_T
*
* C type - size_t
*/
rb_define_const(mFiddle, "TYPE_SIZE_T", INT2NUM(TYPE_SIZE_T));
/* Document-const: TYPE_SSIZE_T
*
* C type - ssize_t
*/
rb_define_const(mFiddle, "TYPE_SSIZE_T", INT2NUM(TYPE_SSIZE_T));
/* Document-const: TYPE_PTRDIFF_T
*
* C type - ptrdiff_t
*/
rb_define_const(mFiddle, "TYPE_PTRDIFF_T", INT2NUM(TYPE_PTRDIFF_T));
/* Document-const: TYPE_INTPTR_T
*
* C type - intptr_t
*/
rb_define_const(mFiddle, "TYPE_INTPTR_T", INT2NUM(TYPE_INTPTR_T));
/* Document-const: TYPE_UINTPTR_T
*
* C type - uintptr_t
*/
rb_define_const(mFiddle, "TYPE_UINTPTR_T", INT2NUM(TYPE_UINTPTR_T));
/* Document-const: ALIGN_VOIDP
*
* The alignment size of a void*
*/
rb_define_const(mFiddle, "ALIGN_VOIDP", INT2NUM(ALIGN_VOIDP));
/* Document-const: ALIGN_CHAR
*
* The alignment size of a char
*/
rb_define_const(mFiddle, "ALIGN_CHAR", INT2NUM(ALIGN_CHAR));
/* Document-const: ALIGN_SHORT
*
* The alignment size of a short
*/
rb_define_const(mFiddle, "ALIGN_SHORT", INT2NUM(ALIGN_SHORT));
/* Document-const: ALIGN_INT
*
* The alignment size of an int
*/
rb_define_const(mFiddle, "ALIGN_INT", INT2NUM(ALIGN_INT));
/* Document-const: ALIGN_LONG
*
* The alignment size of a long
*/
rb_define_const(mFiddle, "ALIGN_LONG", INT2NUM(ALIGN_LONG));
#if HAVE_LONG_LONG
/* Document-const: ALIGN_LONG_LONG
*
* The alignment size of a long long
*/
rb_define_const(mFiddle, "ALIGN_LONG_LONG", INT2NUM(ALIGN_LONG_LONG));
#endif
/* Document-const: ALIGN_INT8_T
*
* The alignment size of a int8_t
*/
rb_define_const(mFiddle, "ALIGN_INT8_T", INT2NUM(ALIGN_INT8_T));
/* Document-const: ALIGN_INT16_T
*
* The alignment size of a int16_t
*/
rb_define_const(mFiddle, "ALIGN_INT16_T", INT2NUM(ALIGN_INT16_T));
/* Document-const: ALIGN_INT32_T
*
* The alignment size of a int32_t
*/
rb_define_const(mFiddle, "ALIGN_INT32_T", INT2NUM(ALIGN_INT32_T));
/* Document-const: ALIGN_INT64_T
*
* The alignment size of a int64_t
*/
rb_define_const(mFiddle, "ALIGN_INT64_T", INT2NUM(ALIGN_INT64_T));
/* Document-const: ALIGN_FLOAT
*
* The alignment size of a float
*/
rb_define_const(mFiddle, "ALIGN_FLOAT", INT2NUM(ALIGN_FLOAT));
/* Document-const: ALIGN_DOUBLE
*
* The alignment size of a double
*/
rb_define_const(mFiddle, "ALIGN_DOUBLE",INT2NUM(ALIGN_DOUBLE));
/* Document-const: ALIGN_SIZE_T
*
* The alignment size of a size_t
*/
rb_define_const(mFiddle, "ALIGN_SIZE_T", INT2NUM(ALIGN_OF(size_t)));
/* Document-const: ALIGN_SSIZE_T
*
* The alignment size of a ssize_t
*/
rb_define_const(mFiddle, "ALIGN_SSIZE_T", INT2NUM(ALIGN_OF(size_t))); /* same as size_t */
/* Document-const: ALIGN_PTRDIFF_T
*
* The alignment size of a ptrdiff_t
*/
rb_define_const(mFiddle, "ALIGN_PTRDIFF_T", INT2NUM(ALIGN_OF(ptrdiff_t)));
/* Document-const: ALIGN_INTPTR_T
*
* The alignment size of a intptr_t
*/
rb_define_const(mFiddle, "ALIGN_INTPTR_T", INT2NUM(ALIGN_OF(intptr_t)));
/* Document-const: ALIGN_UINTPTR_T
*
* The alignment size of a uintptr_t
*/
rb_define_const(mFiddle, "ALIGN_UINTPTR_T", INT2NUM(ALIGN_OF(uintptr_t)));
/* Document-const: WINDOWS
*
* Returns a boolean regarding whether the host is WIN32
*/
#if defined(_WIN32)
rb_define_const(mFiddle, "WINDOWS", Qtrue);
#else
rb_define_const(mFiddle, "WINDOWS", Qfalse);
#endif
/* Document-const: SIZEOF_VOIDP
*
* size of a void*
*/
rb_define_const(mFiddle, "SIZEOF_VOIDP", INT2NUM(sizeof(void*)));
/* Document-const: SIZEOF_CHAR
*
* size of a char
*/
rb_define_const(mFiddle, "SIZEOF_CHAR", INT2NUM(sizeof(char)));
/* Document-const: SIZEOF_SHORT
*
* size of a short
*/
rb_define_const(mFiddle, "SIZEOF_SHORT", INT2NUM(sizeof(short)));
/* Document-const: SIZEOF_INT
*
* size of an int
*/
rb_define_const(mFiddle, "SIZEOF_INT", INT2NUM(sizeof(int)));
/* Document-const: SIZEOF_LONG
*
* size of a long
*/
rb_define_const(mFiddle, "SIZEOF_LONG", INT2NUM(sizeof(long)));
#if HAVE_LONG_LONG
/* Document-const: SIZEOF_LONG_LONG
*
* size of a long long
*/
rb_define_const(mFiddle, "SIZEOF_LONG_LONG", INT2NUM(sizeof(LONG_LONG)));
#endif
/* Document-const: SIZEOF_INT8_T
*
* size of a int8_t
*/
rb_define_const(mFiddle, "SIZEOF_INT8_T", INT2NUM(sizeof(int8_t)));
/* Document-const: SIZEOF_INT16_T
*
* size of a int16_t
*/
rb_define_const(mFiddle, "SIZEOF_INT16_T", INT2NUM(sizeof(int16_t)));
/* Document-const: SIZEOF_INT32_T
*
* size of a int32_t
*/
rb_define_const(mFiddle, "SIZEOF_INT32_T", INT2NUM(sizeof(int32_t)));
/* Document-const: SIZEOF_INT64_T
*
* size of a int64_t
*/
rb_define_const(mFiddle, "SIZEOF_INT64_T", INT2NUM(sizeof(int64_t)));
/* Document-const: SIZEOF_FLOAT
*
* size of a float
*/
rb_define_const(mFiddle, "SIZEOF_FLOAT", INT2NUM(sizeof(float)));
/* Document-const: SIZEOF_DOUBLE
*
* size of a double
*/
rb_define_const(mFiddle, "SIZEOF_DOUBLE",INT2NUM(sizeof(double)));
/* Document-const: SIZEOF_SIZE_T
*
* size of a size_t
*/
rb_define_const(mFiddle, "SIZEOF_SIZE_T", INT2NUM(sizeof(size_t)));
/* Document-const: SIZEOF_SSIZE_T
*
* size of a ssize_t
*/
rb_define_const(mFiddle, "SIZEOF_SSIZE_T", INT2NUM(sizeof(size_t))); /* same as size_t */
/* Document-const: SIZEOF_PTRDIFF_T
*
* size of a ptrdiff_t
*/
rb_define_const(mFiddle, "SIZEOF_PTRDIFF_T", INT2NUM(sizeof(ptrdiff_t)));
/* Document-const: SIZEOF_INTPTR_T
*
* size of a intptr_t
*/
rb_define_const(mFiddle, "SIZEOF_INTPTR_T", INT2NUM(sizeof(intptr_t)));
/* Document-const: SIZEOF_UINTPTR_T
*
* size of a uintptr_t
*/
rb_define_const(mFiddle, "SIZEOF_UINTPTR_T", INT2NUM(sizeof(uintptr_t)));
/* Document-const: SIZEOF_CONST_STRING
*
* size of a const char*
*/
rb_define_const(mFiddle, "SIZEOF_CONST_STRING", INT2NUM(sizeof(const char*)));
/* Document-const: RUBY_FREE
*
* Address of the ruby_xfree() function
*/
rb_define_const(mFiddle, "RUBY_FREE", PTR2NUM(ruby_xfree));
/* Document-const: BUILD_RUBY_PLATFORM
*
* Platform built against (i.e. "x86_64-linux", etc.)
*
* See also RUBY_PLATFORM
*/
rb_define_const(mFiddle, "BUILD_RUBY_PLATFORM", rb_str_new2(RUBY_PLATFORM));
rb_define_module_function(mFiddle, "dlwrap", rb_fiddle_value2ptr, 1);
rb_define_module_function(mFiddle, "dlunwrap", rb_fiddle_ptr2value, 1);
rb_define_module_function(mFiddle, "malloc", rb_fiddle_malloc, 1);
rb_define_module_function(mFiddle, "realloc", rb_fiddle_realloc, 2);
rb_define_module_function(mFiddle, "free", rb_fiddle_free, 1);
Init_fiddle_function();
Init_fiddle_closure();
Init_fiddle_handle();
Init_fiddle_pointer();
Init_fiddle_pinned();
#ifdef HAVE_RUBY_MEMORY_VIEW_H
Init_fiddle_memory_view();
#endif
}
/* vim: set noet sws=4 sw=4: */
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