From 1eac1cb21ebb095886393ee71acd0ed8f6dedab8 Mon Sep 17 00:00:00 2001 From: tenderlove Date: Tue, 27 Nov 2012 05:59:34 +0000 Subject: reverting r37881 git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@37891 b2dd03c8-39d4-4d8f-98ff-823fe69b080e --- ext/dl/lib/dl/struct.rb | 2 +- ext/fiddle/extconf.rb | 14 - ext/fiddle/fiddle.c | 198 ----------- ext/fiddle/fiddle.h | 27 -- ext/fiddle/function.c | 12 - ext/fiddle/handle.c | 465 ------------------------- ext/fiddle/lib/fiddle.rb | 16 +- ext/fiddle/lib/fiddle/function.rb | 7 - ext/fiddle/pointer.c | 691 -------------------------------------- 9 files changed, 6 insertions(+), 1426 deletions(-) delete mode 100644 ext/fiddle/handle.c delete mode 100644 ext/fiddle/pointer.c (limited to 'ext') diff --git a/ext/dl/lib/dl/struct.rb b/ext/dl/lib/dl/struct.rb index e2d91a6d14..9359ca4fcc 100644 --- a/ext/dl/lib/dl/struct.rb +++ b/ext/dl/lib/dl/struct.rb @@ -76,7 +76,7 @@ module DL end # A C struct wrapper - class CStructEntity < (DL.fiddle? ? Fiddle::Pointer : CPtr) + class CStructEntity < CPtr include PackInfo include ValueUtil diff --git a/ext/fiddle/extconf.rb b/ext/fiddle/extconf.rb index 9b9803f65b..a9cdcc251f 100644 --- a/ext/fiddle/extconf.rb +++ b/ext/fiddle/extconf.rb @@ -19,20 +19,6 @@ end have_header 'sys/mman.h' -if have_header "dlfcn.h" - have_library "dl" - - %w{ dlopen dlclose dlsym }.each do |func| - abort "missing function #{func}" unless have_func(func) - end - - have_func "dlerror" -elsif have_header "windows.h" - %w{ LoadLibrary FreeLibrary GetProcAddress }.each do |func| - abort "missing function #{func}" unless have_func(func) - end -end - config = File.read(RbConfig.expand(File.join($arch_hdrdir, "ruby/config.h"))) types = {"SIZE_T"=>"SSIZE_T", "PTRDIFF_T"=>nil, "INTPTR_T"=>nil} types.each do |type, signed| diff --git a/ext/fiddle/fiddle.c b/ext/fiddle/fiddle.c index 85a362cb04..3006bbeb77 100644 --- a/ext/fiddle/fiddle.c +++ b/ext/fiddle/fiddle.c @@ -1,7 +1,6 @@ #include VALUE mFiddle; -VALUE rb_eFiddleError; #ifndef TYPE_SSIZE_T # if SIZEOF_SIZE_T == SIZEOF_INT @@ -35,100 +34,6 @@ VALUE rb_eFiddleError; #endif #define TYPE_UINTPTR_T (-TYPE_INTPTR_T) -void Init_fiddle_pointer(void); - -/* - * 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; - - rb_secure(4); - ptr = (void*)ruby_xmalloc(NUM2INT(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); - - rb_secure(4); - ptr = (void*)ruby_xrealloc(ptr, NUM2INT(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); - - rb_secure(4); - 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') - * => # - * - * lib['strcpy'].to_s(16) - * => "7f59de6dd240" - * - * Fiddle.dlunwrap(Fiddle.dlwrap(lib['strcpy'].to_s(16))) - * => "7f59de6dd240" - */ -VALUE -rb_fiddle_ptr2value(VALUE self, VALUE addr) -{ - rb_secure(4); - 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.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) { @@ -142,13 +47,6 @@ Init_fiddle(void) */ mFiddle = rb_define_module("Fiddle"); - /* - * Document-class: Fiddle::DLError - * - * standard dynamic load exception - */ - rb_eFiddleError = rb_define_class_under(mFiddle, "DLError", rb_eStandardError); - /* Document-const: TYPE_VOID * * C type - void @@ -245,103 +143,7 @@ Init_fiddle(void) 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_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))); - - rb_define_module_function(mFiddle, "dlwrap", rb_fiddle_value2ptr, 1); - - /* Document-const: RUBY_FREE - * - * Address of the ruby_xfree() function - */ - rb_define_const(mFiddle, "RUBY_FREE", PTR2NUM(ruby_xfree)); - - 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(); } /* vim: set noet sws=4 sw=4: */ diff --git a/ext/fiddle/fiddle.h b/ext/fiddle/fiddle.h index 8c8a93425b..3a829fe433 100644 --- a/ext/fiddle/fiddle.h +++ b/ext/fiddle/fiddle.h @@ -12,30 +12,6 @@ #include #endif -#if defined(HAVE_DLFCN_H) -# include -# /* some stranger systems may not define all of these */ -#ifndef RTLD_LAZY -#define RTLD_LAZY 0 -#endif -#ifndef RTLD_GLOBAL -#define RTLD_GLOBAL 0 -#endif -#ifndef RTLD_NOW -#define RTLD_NOW 0 -#endif -#else -# if defined(_WIN32) -# include -# define dlopen(name,flag) ((void*)LoadLibrary(name)) -# define dlerror() strerror(rb_w32_map_errno(GetLastError())) -# define dlsym(handle,name) ((void*)GetProcAddress((handle),(name))) -# define RTLD_LAZY -1 -# define RTLD_NOW -1 -# define RTLD_GLOBAL -1 -# endif -#endif - #ifdef USE_HEADER_HACKS #include #else @@ -122,9 +98,6 @@ #define TYPE_DOUBLE 8 extern VALUE mFiddle; -extern VALUE rb_eFiddleError; - -VALUE rb_fiddle_new_function(VALUE address, VALUE arg_types, VALUE ret_type); #endif /* vim: set noet sws=4 sw=4: */ diff --git a/ext/fiddle/function.c b/ext/fiddle/function.c index 7fc5127f9f..6e8909991a 100644 --- a/ext/fiddle/function.c +++ b/ext/fiddle/function.c @@ -38,18 +38,6 @@ allocate(VALUE klass) return TypedData_Make_Struct(klass, ffi_cif, &function_data_type, cif); } -VALUE -rb_fiddle_new_function(VALUE address, VALUE arg_types, VALUE ret_type) -{ - VALUE argv[3]; - - argv[0] = address; - argv[1] = arg_types; - argv[2] = ret_type; - - return rb_class_new_instance(3, argv, cFiddleFunction); -} - static VALUE initialize(int argc, VALUE argv[], VALUE self) { diff --git a/ext/fiddle/handle.c b/ext/fiddle/handle.c deleted file mode 100644 index 7031f5f77c..0000000000 --- a/ext/fiddle/handle.c +++ /dev/null @@ -1,465 +0,0 @@ -#include -#include - -VALUE rb_cHandle; - -struct dl_handle { - void *ptr; - int open; - int enable_close; -}; - -#ifdef _WIN32 -# ifndef _WIN32_WCE -static void * -w32_coredll(void) -{ - MEMORY_BASIC_INFORMATION m; - memset(&m, 0, sizeof(m)); - if( !VirtualQuery(_errno, &m, sizeof(m)) ) return NULL; - return m.AllocationBase; -} -# endif - -static int -w32_dlclose(void *ptr) -{ -# ifndef _WIN32_WCE - if( ptr == w32_coredll() ) return 0; -# endif - if( FreeLibrary((HMODULE)ptr) ) return 0; - return errno = rb_w32_map_errno(GetLastError()); -} -#define dlclose(ptr) w32_dlclose(ptr) -#endif - -static void -dlhandle_free(void *ptr) -{ - struct dl_handle *dlhandle = ptr; - if( dlhandle->ptr && dlhandle->open && dlhandle->enable_close ){ - dlclose(dlhandle->ptr); - } -} - -static size_t -dlhandle_memsize(const void *ptr) -{ - return ptr ? sizeof(struct dl_handle) : 0; -} - -static const rb_data_type_t dlhandle_data_type = { - "dl/handle", - {0, dlhandle_free, dlhandle_memsize,}, -}; - -/* - * call-seq: close - * - * Close this Fiddle::Handle. Calling close more than once will raise a - * Fiddle::DLError exception. - */ -VALUE -rb_dlhandle_close(VALUE self) -{ - struct dl_handle *dlhandle; - - TypedData_Get_Struct(self, struct dl_handle, &dlhandle_data_type, dlhandle); - if(dlhandle->open) { - int ret = dlclose(dlhandle->ptr); - dlhandle->open = 0; - - /* Check dlclose for successful return value */ - if(ret) { -#if defined(HAVE_DLERROR) - rb_raise(rb_eFiddleError, "%s", dlerror()); -#else - rb_raise(rb_eFiddleError, "could not close handle"); -#endif - } - return INT2NUM(ret); - } - rb_raise(rb_eFiddleError, "dlclose() called too many times"); - - UNREACHABLE; -} - -VALUE -rb_dlhandle_s_allocate(VALUE klass) -{ - VALUE obj; - struct dl_handle *dlhandle; - - obj = TypedData_Make_Struct(rb_cHandle, struct dl_handle, &dlhandle_data_type, dlhandle); - dlhandle->ptr = 0; - dlhandle->open = 0; - dlhandle->enable_close = 0; - - return obj; -} - -static VALUE -predefined_dlhandle(void *handle) -{ - VALUE obj = rb_dlhandle_s_allocate(rb_cHandle); - struct dl_handle *dlhandle = DATA_PTR(obj); - - dlhandle->ptr = handle; - dlhandle->open = 1; - OBJ_FREEZE(obj); - return obj; -} - -/* - * call-seq: - * initialize(lib = nil, flags = Fiddle::RTLD_LAZY | Fiddle::RTLD_GLOBAL) - * - * Create a new handler that opens library named +lib+ with +flags+. If no - * library is specified, RTLD_DEFAULT is used. - */ -VALUE -rb_dlhandle_initialize(int argc, VALUE argv[], VALUE self) -{ - void *ptr; - struct dl_handle *dlhandle; - VALUE lib, flag; - char *clib; - int cflag; - const char *err; - - switch( rb_scan_args(argc, argv, "02", &lib, &flag) ){ - case 0: - clib = NULL; - cflag = RTLD_LAZY | RTLD_GLOBAL; - break; - case 1: - clib = NIL_P(lib) ? NULL : StringValuePtr(lib); - cflag = RTLD_LAZY | RTLD_GLOBAL; - break; - case 2: - clib = NIL_P(lib) ? NULL : StringValuePtr(lib); - cflag = NUM2INT(flag); - break; - default: - rb_bug("rb_dlhandle_new"); - } - - rb_secure(2); - -#if defined(_WIN32) - if( !clib ){ - HANDLE rb_libruby_handle(void); - ptr = rb_libruby_handle(); - } - else if( STRCASECMP(clib, "libc") == 0 -# ifdef RUBY_COREDLL - || STRCASECMP(clib, RUBY_COREDLL) == 0 - || STRCASECMP(clib, RUBY_COREDLL".dll") == 0 -# endif - ){ -# ifdef _WIN32_WCE - ptr = dlopen("coredll.dll", cflag); -# else - ptr = w32_coredll(); -# endif - } - else -#endif - ptr = dlopen(clib, cflag); -#if defined(HAVE_DLERROR) - if( !ptr && (err = dlerror()) ){ - rb_raise(rb_eFiddleError, "%s", err); - } -#else - if( !ptr ){ - err = dlerror(); - rb_raise(rb_eFiddleError, "%s", err); - } -#endif - TypedData_Get_Struct(self, struct dl_handle, &dlhandle_data_type, dlhandle); - if( dlhandle->ptr && dlhandle->open && dlhandle->enable_close ){ - dlclose(dlhandle->ptr); - } - dlhandle->ptr = ptr; - dlhandle->open = 1; - dlhandle->enable_close = 0; - - if( rb_block_given_p() ){ - rb_ensure(rb_yield, self, rb_dlhandle_close, self); - } - - return Qnil; -} - -/* - * call-seq: enable_close - * - * Enable a call to dlclose() when this Fiddle::Handle is garbage collected. - */ -VALUE -rb_dlhandle_enable_close(VALUE self) -{ - struct dl_handle *dlhandle; - - TypedData_Get_Struct(self, struct dl_handle, &dlhandle_data_type, dlhandle); - dlhandle->enable_close = 1; - return Qnil; -} - -/* - * call-seq: disable_close - * - * Disable a call to dlclose() when this Fiddle::Handle is garbage collected. - */ -VALUE -rb_dlhandle_disable_close(VALUE self) -{ - struct dl_handle *dlhandle; - - TypedData_Get_Struct(self, struct dl_handle, &dlhandle_data_type, dlhandle); - dlhandle->enable_close = 0; - return Qnil; -} - -/* - * call-seq: close_enabled? - * - * Returns +true+ if dlclose() will be called when this Fiddle::Handle is - * garbage collected. - */ -static VALUE -rb_dlhandle_close_enabled_p(VALUE self) -{ - struct dl_handle *dlhandle; - - TypedData_Get_Struct(self, struct dl_handle, &dlhandle_data_type, dlhandle); - - if(dlhandle->enable_close) return Qtrue; - return Qfalse; -} - -/* - * call-seq: to_i - * - * Returns the memory address for this handle. - */ -VALUE -rb_dlhandle_to_i(VALUE self) -{ - struct dl_handle *dlhandle; - - TypedData_Get_Struct(self, struct dl_handle, &dlhandle_data_type, dlhandle); - return PTR2NUM(dlhandle); -} - -static VALUE dlhandle_sym(void *handle, const char *symbol); - -/* - * Document-method: sym - * Document-method: [] - * - * call-seq: sym(name) - * - * Get the address as an Integer for the function named +name+. - */ -VALUE -rb_dlhandle_sym(VALUE self, VALUE sym) -{ - struct dl_handle *dlhandle; - - TypedData_Get_Struct(self, struct dl_handle, &dlhandle_data_type, dlhandle); - if( ! dlhandle->open ){ - rb_raise(rb_eFiddleError, "closed handle"); - } - - return dlhandle_sym(dlhandle->ptr, StringValueCStr(sym)); -} - -#ifndef RTLD_NEXT -#define RTLD_NEXT NULL -#endif -#ifndef RTLD_DEFAULT -#define RTLD_DEFAULT NULL -#endif - -/* - * Document-method: sym - * Document-method: [] - * - * call-seq: sym(name) - * - * Get the address as an Integer for the function named +name+. The function - * is searched via dlsym on RTLD_NEXT. See man(3) dlsym() for more info. - */ -VALUE -rb_dlhandle_s_sym(VALUE self, VALUE sym) -{ - return dlhandle_sym(RTLD_NEXT, StringValueCStr(sym)); -} - -static VALUE -dlhandle_sym(void *handle, const char *name) -{ -#if defined(HAVE_DLERROR) - const char *err; -# define CHECK_DLERROR if( err = dlerror() ){ func = 0; } -#else -# define CHECK_DLERROR -#endif - void (*func)(); - - rb_secure(2); -#ifdef HAVE_DLERROR - dlerror(); -#endif - func = (void (*)())(VALUE)dlsym(handle, name); - CHECK_DLERROR; -#if defined(FUNC_STDCALL) - if( !func ){ - int i; - int len = (int)strlen(name); - char *name_n; -#if defined(__CYGWIN__) || defined(_WIN32) || defined(__MINGW32__) - { - char *name_a = (char*)xmalloc(len+2); - strcpy(name_a, name); - name_n = name_a; - name_a[len] = 'A'; - name_a[len+1] = '\0'; - func = dlsym(handle, name_a); - CHECK_DLERROR; - if( func ) goto found; - name_n = xrealloc(name_a, len+6); - } -#else - name_n = (char*)xmalloc(len+6); -#endif - memcpy(name_n, name, len); - name_n[len++] = '@'; - for( i = 0; i < 256; i += 4 ){ - sprintf(name_n + len, "%d", i); - func = dlsym(handle, name_n); - CHECK_DLERROR; - if( func ) break; - } - if( func ) goto found; - name_n[len-1] = 'A'; - name_n[len++] = '@'; - for( i = 0; i < 256; i += 4 ){ - sprintf(name_n + len, "%d", i); - func = dlsym(handle, name_n); - CHECK_DLERROR; - if( func ) break; - } - found: - xfree(name_n); - } -#endif - if( !func ){ - rb_raise(rb_eFiddleError, "unknown symbol \"%s\"", name); - } - - return PTR2NUM(func); -} - -void -Init_fiddle_handle(void) -{ - /* - * Document-class: Fiddle::Handle - * - * The Fiddle::Handle is the manner to access the dynamic library - * - * == Example - * - * === Setup - * - * libc_so = "/lib64/libc.so.6" - * => "/lib64/libc.so.6" - * @handle = Fiddle::Handle.new(libc_so) - * => # - * - * === Setup, with flags - * - * libc_so = "/lib64/libc.so.6" - * => "/lib64/libc.so.6" - * @handle = Fiddle::Handle.new(libc_so, Fiddle::RTLD_LAZY | Fiddle::RTLD_GLOBAL) - * => # - * - * === Addresses to symbols - * - * strcpy_addr = @handle['strcpy'] - * => 140062278451968 - * - * or - * - * strcpy_addr = @handle.sym('strcpy') - * => 140062278451968 - * - */ - rb_cHandle = rb_define_class_under(mFiddle, "Handle", rb_cObject); - rb_define_alloc_func(rb_cHandle, rb_dlhandle_s_allocate); - rb_define_singleton_method(rb_cHandle, "sym", rb_dlhandle_s_sym, 1); - rb_define_singleton_method(rb_cHandle, "[]", rb_dlhandle_s_sym, 1); - - /* Document-const: NEXT - * - * A predefined pseudo-handle of RTLD_NEXT - * - * Which will find the next occurrence of a function in the search order - * after the current library. - */ - rb_define_const(rb_cHandle, "NEXT", predefined_dlhandle(RTLD_NEXT)); - - /* Document-const: DEFAULT - * - * A predefined pseudo-handle of RTLD_DEFAULT - * - * Which will find the first occurrence of the desired symbol using the - * default library search order - */ - rb_define_const(rb_cHandle, "DEFAULT", predefined_dlhandle(RTLD_DEFAULT)); - - /* Document-const: RTLD_GLOBAL - * - * rtld Fiddle::Handle flag. - * - * The symbols defined by this library will be made available for symbol - * resolution of subsequently loaded libraries. - */ - rb_define_const(rb_cHandle, "RTLD_GLOBAL", INT2NUM(RTLD_GLOBAL)); - - /* Document-const: RTLD_LAZY - * - * rtld Fiddle::Handle flag. - * - * Perform lazy binding. Only resolve symbols as the code that references - * them is executed. If the symbol is never referenced, then it is never - * resolved. (Lazy binding is only performed for function references; - * references to variables are always immediately bound when the library - * is loaded.) - */ - rb_define_const(rb_cHandle, "RTLD_LAZY", INT2NUM(RTLD_LAZY)); - - /* Document-const: RTLD_NOW - * - * rtld Fiddle::Handle flag. - * - * If this value is specified or the environment variable LD_BIND_NOW is - * set to a nonempty string, all undefined symbols in the library are - * resolved before dlopen() returns. If this cannot be done an error is - * returned. - */ - rb_define_const(rb_cHandle, "RTLD_NOW", INT2NUM(RTLD_NOW)); - - rb_define_method(rb_cHandle, "initialize", rb_dlhandle_initialize, -1); - rb_define_method(rb_cHandle, "to_i", rb_dlhandle_to_i, 0); - rb_define_method(rb_cHandle, "close", rb_dlhandle_close, 0); - rb_define_method(rb_cHandle, "sym", rb_dlhandle_sym, 1); - rb_define_method(rb_cHandle, "[]", rb_dlhandle_sym, 1); - rb_define_method(rb_cHandle, "disable_close", rb_dlhandle_disable_close, 0); - rb_define_method(rb_cHandle, "enable_close", rb_dlhandle_enable_close, 0); - rb_define_method(rb_cHandle, "close_enabled?", rb_dlhandle_close_enabled_p, 0); -} - -/* vim: set noet sws=4 sw=4: */ diff --git a/ext/fiddle/lib/fiddle.rb b/ext/fiddle/lib/fiddle.rb index 1c68b7b0ec..7d55a1f7ad 100644 --- a/ext/fiddle/lib/fiddle.rb +++ b/ext/fiddle/lib/fiddle.rb @@ -1,8 +1,13 @@ require 'fiddle.so' require 'fiddle/function' require 'fiddle/closure' +require 'dl' unless Object.const_defined?(:DL) module Fiddle + + # A reference to DL::CPtr + Pointer = DL::CPtr + if WINDOWS # Returns the last win32 +Error+ of the current executing +Thread+ or nil # if none @@ -26,15 +31,4 @@ module Fiddle Thread.current[:__DL2_LAST_ERROR__] = error Thread.current[:__FIDDLE_LAST_ERROR__] = error end - - def dlopen library - Fiddle::Handle.new library - end - module_function :dlopen - - # Add constants for backwards compat - - RTLD_GLOBAL = Handle::RTLD_GLOBAL # :nodoc: - RTLD_LAZY = Handle::RTLD_LAZY # :nodoc: - RTLD_NOW = Handle::RTLD_NOW # :nodoc: end diff --git a/ext/fiddle/lib/fiddle/function.rb b/ext/fiddle/lib/fiddle/function.rb index f4d41e6a82..1657682498 100644 --- a/ext/fiddle/lib/fiddle/function.rb +++ b/ext/fiddle/lib/fiddle/function.rb @@ -2,12 +2,5 @@ module Fiddle class Function # The ABI of the Function. attr_reader :abi - - # The address of this function - attr_reader :ptr - - def to_i - ptr.to_i - end end end diff --git a/ext/fiddle/pointer.c b/ext/fiddle/pointer.c deleted file mode 100644 index a06f60ca79..0000000000 --- a/ext/fiddle/pointer.c +++ /dev/null @@ -1,691 +0,0 @@ -/* -*- C -*- - * $Id$ - */ - -#include -#include -#include -#include - -VALUE rb_cPointer; - -typedef void (*freefunc_t)(void*); - -struct ptr_data { - void *ptr; - long size; - freefunc_t free; - VALUE wrap[2]; -}; - -#define RPTR_DATA(obj) ((struct ptr_data *)(DATA_PTR(obj))) - -static inline freefunc_t -get_freefunc(VALUE func, volatile VALUE *wrap) -{ - VALUE addrnum; - if (NIL_P(func)) { - *wrap = 0; - return NULL; - } - addrnum = rb_Integer(func); - *wrap = (addrnum != func) ? func : 0; - return (freefunc_t)(VALUE)NUM2PTR(addrnum); -} - -static ID id_to_ptr; - -static void -dlptr_mark(void *ptr) -{ - struct ptr_data *data = ptr; - if (data->wrap[0]) { - rb_gc_mark(data->wrap[0]); - } - if (data->wrap[1]) { - rb_gc_mark(data->wrap[1]); - } -} - -static void -dlptr_free(void *ptr) -{ - struct ptr_data *data = ptr; - if (data->ptr) { - if (data->free) { - (*(data->free))(data->ptr); - } - } -} - -static size_t -dlptr_memsize(const void *ptr) -{ - const struct ptr_data *data = ptr; - return data ? sizeof(*data) + data->size : 0; -} - -static const rb_data_type_t dlptr_data_type = { - "fiddle/pointer", - {dlptr_mark, dlptr_free, dlptr_memsize,}, -}; - -VALUE -rb_dlptr_new2(VALUE klass, void *ptr, long size, freefunc_t func) -{ - struct ptr_data *data; - VALUE val; - - rb_secure(4); - val = TypedData_Make_Struct(klass, struct ptr_data, &dlptr_data_type, data); - data->ptr = ptr; - data->free = func; - data->size = size; - OBJ_TAINT(val); - - return val; -} - -VALUE -rb_dlptr_new(void *ptr, long size, freefunc_t func) -{ - return rb_dlptr_new2(rb_cPointer, ptr, size, func); -} - -VALUE -rb_dlptr_malloc(long size, freefunc_t func) -{ - void *ptr; - - rb_secure(4); - ptr = ruby_xmalloc((size_t)size); - memset(ptr,0,(size_t)size); - return rb_dlptr_new(ptr, size, func); -} - -void * -rb_dlptr2cptr(VALUE val) -{ - struct ptr_data *data; - void *ptr; - - if (rb_obj_is_kind_of(val, rb_cPointer)) { - TypedData_Get_Struct(val, struct ptr_data, &dlptr_data_type, data); - ptr = data->ptr; - } - else if (val == Qnil) { - ptr = NULL; - } - else{ - rb_raise(rb_eTypeError, "DL::PtrData was expected"); - } - - return ptr; -} - -static VALUE -rb_dlptr_s_allocate(VALUE klass) -{ - VALUE obj; - struct ptr_data *data; - - rb_secure(4); - obj = TypedData_Make_Struct(klass, struct ptr_data, &dlptr_data_type, data); - data->ptr = 0; - data->size = 0; - data->free = 0; - - return obj; -} - -/* - * call-seq: - * DL::CPtr.new(address) => dl_cptr - * DL::CPtr.new(address, size) => dl_cptr - * DL::CPtr.new(address, size, freefunc) => dl_cptr - * - * Create a new pointer to +address+ with an optional +size+ and +freefunc+. - * +freefunc+ will be called when the instance is garbage collected. - */ -static VALUE -rb_dlptr_initialize(int argc, VALUE argv[], VALUE self) -{ - VALUE ptr, sym, size, wrap = 0, funcwrap = 0; - struct ptr_data *data; - void *p = NULL; - freefunc_t f = NULL; - long s = 0; - - if (rb_scan_args(argc, argv, "12", &ptr, &size, &sym) >= 1) { - VALUE addrnum = rb_Integer(ptr); - if (addrnum != ptr) wrap = ptr; - p = NUM2PTR(addrnum); - } - if (argc >= 2) { - s = NUM2LONG(size); - } - if (argc >= 3) { - f = get_freefunc(sym, &funcwrap); - } - - if (p) { - TypedData_Get_Struct(self, struct ptr_data, &dlptr_data_type, data); - if (data->ptr && data->free) { - /* Free previous memory. Use of inappropriate initialize may cause SEGV. */ - (*(data->free))(data->ptr); - } - data->wrap[0] = wrap; - data->wrap[1] = funcwrap; - data->ptr = p; - data->size = s; - data->free = f; - } - - return Qnil; -} - -/* - * call-seq: - * - * Fiddle::Pointer.malloc(size, freefunc = nil) => fiddle pointer instance - * - * Allocate +size+ bytes of memory and associate it with an optional - * +freefunc+ that will be called when the pointer is garbage collected. - * +freefunc+ must be an address pointing to a function or an instance of - * Fiddle::Function - */ -static VALUE -rb_dlptr_s_malloc(int argc, VALUE argv[], VALUE klass) -{ - VALUE size, sym, obj, wrap = 0; - long s; - freefunc_t f; - - switch (rb_scan_args(argc, argv, "11", &size, &sym)) { - case 1: - s = NUM2LONG(size); - f = NULL; - break; - case 2: - s = NUM2LONG(size); - f = get_freefunc(sym, &wrap); - break; - default: - rb_bug("rb_dlptr_s_malloc"); - } - - obj = rb_dlptr_malloc(s,f); - if (wrap) RPTR_DATA(obj)->wrap[1] = wrap; - - return obj; -} - -/* - * call-seq: to_i - * - * Returns the integer memory location of this DL::CPtr. - */ -static VALUE -rb_dlptr_to_i(VALUE self) -{ - struct ptr_data *data; - - TypedData_Get_Struct(self, struct ptr_data, &dlptr_data_type, data); - return PTR2NUM(data->ptr); -} - -/* - * call-seq: to_value - * - * Cast this CPtr to a ruby object. - */ -static VALUE -rb_dlptr_to_value(VALUE self) -{ - struct ptr_data *data; - TypedData_Get_Struct(self, struct ptr_data, &dlptr_data_type, data); - return (VALUE)(data->ptr); -} - -/* - * call-seq: ptr - * - * Returns a DL::CPtr that is a dereferenced pointer for this DL::CPtr. - * Analogous to the star operator in C. - */ -VALUE -rb_dlptr_ptr(VALUE self) -{ - struct ptr_data *data; - - TypedData_Get_Struct(self, struct ptr_data, &dlptr_data_type, data); - return rb_dlptr_new(*((void**)(data->ptr)),0,0); -} - -/* - * call-seq: ref - * - * Returns a DL::CPtr that is a reference pointer for this DL::CPtr. - * Analogous to the ampersand operator in C. - */ -VALUE -rb_dlptr_ref(VALUE self) -{ - struct ptr_data *data; - - TypedData_Get_Struct(self, struct ptr_data, &dlptr_data_type, data); - return rb_dlptr_new(&(data->ptr),0,0); -} - -/* - * call-seq: null? - * - * Returns true if this is a null pointer. - */ -VALUE -rb_dlptr_null_p(VALUE self) -{ - struct ptr_data *data; - - TypedData_Get_Struct(self, struct ptr_data, &dlptr_data_type, data); - return data->ptr ? Qfalse : Qtrue; -} - -/* - * call-seq: free=(function) - * - * Set the free function for this pointer to the DL::CFunc in +function+. - */ -static VALUE -rb_dlptr_free_set(VALUE self, VALUE val) -{ - struct ptr_data *data; - - TypedData_Get_Struct(self, struct ptr_data, &dlptr_data_type, data); - data->free = get_freefunc(val, &data->wrap[1]); - - return Qnil; -} - -/* - * call-seq: free - * - * Get the free function for this pointer. Returns Fiddle::Function. - */ -static VALUE -rb_dlptr_free_get(VALUE self) -{ - struct ptr_data *pdata; - VALUE address; - VALUE arg_types; - VALUE ret_type; - - TypedData_Get_Struct(self, struct ptr_data, &dlptr_data_type, pdata); - - if (!pdata->free) - return Qnil; - - address = PTR2NUM(pdata->free); - ret_type = INT2NUM(TYPE_VOID); - arg_types = rb_ary_new(); - rb_ary_push(arg_types, INT2NUM(TYPE_VOIDP)); - - return rb_fiddle_new_function(address, arg_types, ret_type); -} - -/* - * call-seq: - * - * ptr.to_s => string - * ptr.to_s(len) => string - * - * Returns the pointer contents as a string. When called with no arguments, - * this method will return the contents until the first NULL byte. When - * called with +len+, a string of +len+ bytes will be returned. - */ -static VALUE -rb_dlptr_to_s(int argc, VALUE argv[], VALUE self) -{ - struct ptr_data *data; - VALUE arg1, val; - int len; - - TypedData_Get_Struct(self, struct ptr_data, &dlptr_data_type, data); - switch (rb_scan_args(argc, argv, "01", &arg1)) { - case 0: - val = rb_tainted_str_new2((char*)(data->ptr)); - break; - case 1: - len = NUM2INT(arg1); - val = rb_tainted_str_new((char*)(data->ptr), len); - break; - default: - rb_bug("rb_dlptr_to_s"); - } - - return val; -} - -/* - * call-seq: - * - * ptr.to_str => string - * ptr.to_str(len) => string - * - * Returns the pointer contents as a string. When called with no arguments, - * this method will return the contents with the length of this pointer's - * +size+. When called with +len+, a string of +len+ bytes will be returned. - */ -static VALUE -rb_dlptr_to_str(int argc, VALUE argv[], VALUE self) -{ - struct ptr_data *data; - VALUE arg1, val; - int len; - - TypedData_Get_Struct(self, struct ptr_data, &dlptr_data_type, data); - switch (rb_scan_args(argc, argv, "01", &arg1)) { - case 0: - val = rb_tainted_str_new((char*)(data->ptr),data->size); - break; - case 1: - len = NUM2INT(arg1); - val = rb_tainted_str_new((char*)(data->ptr), len); - break; - default: - rb_bug("rb_dlptr_to_str"); - } - - return val; -} - -/* - * call-seq: inspect - * - * Returns a string formatted with an easily readable representation of the - * internal state of the DL::CPtr - */ -static VALUE -rb_dlptr_inspect(VALUE self) -{ - struct ptr_data *data; - char str[1024]; - - TypedData_Get_Struct(self, struct ptr_data, &dlptr_data_type, data); - snprintf(str, 1023, "#<%s:%p ptr=%p size=%ld free=%p>", - rb_class2name(CLASS_OF(self)), data, data->ptr, data->size, data->free); - return rb_str_new2(str); -} - -/* - * call-seq: - * ptr == other => true or false - * ptr.eql?(other) => true or false - * - * Returns true if +other+ wraps the same pointer, otherwise returns - * false. - */ -VALUE -rb_dlptr_eql(VALUE self, VALUE other) -{ - void *ptr1, *ptr2; - - if(!rb_obj_is_kind_of(other, rb_cPointer)) return Qfalse; - - ptr1 = rb_dlptr2cptr(self); - ptr2 = rb_dlptr2cptr(other); - - return ptr1 == ptr2 ? Qtrue : Qfalse; -} - -/* - * call-seq: - * ptr <=> other => -1, 0, 1, or nil - * - * Returns -1 if less than, 0 if equal to, 1 if greater than +other+. Returns - * nil if +ptr+ cannot be compared to +other+. - */ -static VALUE -rb_dlptr_cmp(VALUE self, VALUE other) -{ - void *ptr1, *ptr2; - SIGNED_VALUE diff; - - if(!rb_obj_is_kind_of(other, rb_cPointer)) return Qnil; - - ptr1 = rb_dlptr2cptr(self); - ptr2 = rb_dlptr2cptr(other); - diff = (SIGNED_VALUE)ptr1 - (SIGNED_VALUE)ptr2; - if (!diff) return INT2FIX(0); - return diff > 0 ? INT2NUM(1) : INT2NUM(-1); -} - -/* - * call-seq: - * ptr + n => new cptr - * - * Returns a new DL::CPtr that has been advanced +n+ bytes. - */ -static VALUE -rb_dlptr_plus(VALUE self, VALUE other) -{ - void *ptr; - long num, size; - - ptr = rb_dlptr2cptr(self); - size = RPTR_DATA(self)->size; - num = NUM2LONG(other); - return rb_dlptr_new((char *)ptr + num, size - num, 0); -} - -/* - * call-seq: - * ptr - n => new cptr - * - * Returns a new DL::CPtr that has been moved back +n+ bytes. - */ -static VALUE -rb_dlptr_minus(VALUE self, VALUE other) -{ - void *ptr; - long num, size; - - ptr = rb_dlptr2cptr(self); - size = RPTR_DATA(self)->size; - num = NUM2LONG(other); - return rb_dlptr_new((char *)ptr - num, size + num, 0); -} - -/* - * call-seq: - * ptr[index] -> an_integer - * ptr[start, length] -> a_string - * - * Returns integer stored at _index_. If _start_ and _length_ are given, - * a string containing the bytes from _start_ of length _length_ will be - * returned. - */ -VALUE -rb_dlptr_aref(int argc, VALUE argv[], VALUE self) -{ - VALUE arg0, arg1; - VALUE retval = Qnil; - size_t offset, len; - struct ptr_data *data; - - TypedData_Get_Struct(self, struct ptr_data, &dlptr_data_type, data); - if (!data->ptr) rb_raise(rb_eFiddleError, "NULL pointer dereference"); - switch( rb_scan_args(argc, argv, "11", &arg0, &arg1) ){ - case 1: - offset = NUM2ULONG(arg0); - retval = INT2NUM(*((char *)data->ptr + offset)); - break; - case 2: - offset = NUM2ULONG(arg0); - len = NUM2ULONG(arg1); - retval = rb_tainted_str_new((char *)data->ptr + offset, len); - break; - default: - rb_bug("rb_dlptr_aref()"); - } - return retval; -} - -/* - * call-seq: - * ptr[index] = int -> int - * ptr[start, length] = string or cptr or addr -> string or dl_cptr or addr - * - * Set the value at +index+ to +int+. Or, set the memory at +start+ until - * +length+ with the contents of +string+, the memory from +dl_cptr+, or the - * memory pointed at by the memory address +addr+. - */ -VALUE -rb_dlptr_aset(int argc, VALUE argv[], VALUE self) -{ - VALUE arg0, arg1, arg2; - VALUE retval = Qnil; - size_t offset, len; - void *mem; - struct ptr_data *data; - - TypedData_Get_Struct(self, struct ptr_data, &dlptr_data_type, data); - if (!data->ptr) rb_raise(rb_eFiddleError, "NULL pointer dereference"); - switch( rb_scan_args(argc, argv, "21", &arg0, &arg1, &arg2) ){ - case 2: - offset = NUM2ULONG(arg0); - ((char*)data->ptr)[offset] = NUM2UINT(arg1); - retval = arg1; - break; - case 3: - offset = NUM2ULONG(arg0); - len = NUM2ULONG(arg1); - if (RB_TYPE_P(arg2, T_STRING)) { - mem = StringValuePtr(arg2); - } - else if( rb_obj_is_kind_of(arg2, rb_cPointer) ){ - mem = rb_dlptr2cptr(arg2); - } - else{ - mem = NUM2PTR(arg2); - } - memcpy((char *)data->ptr + offset, mem, len); - retval = arg2; - break; - default: - rb_bug("rb_dlptr_aset()"); - } - return retval; -} - -/* - * call-seq: size=(size) - * - * Set the size of this pointer to +size+ - */ -static VALUE -rb_dlptr_size_set(VALUE self, VALUE size) -{ - RPTR_DATA(self)->size = NUM2LONG(size); - return size; -} - -/* - * call-seq: size - * - * Get the size of this pointer. - */ -static VALUE -rb_dlptr_size_get(VALUE self) -{ - return LONG2NUM(RPTR_DATA(self)->size); -} - -/* - * call-seq: - * Fiddle::Pointer.to_ptr(val) => cptr - * Fiddle::Pointer[val] => cptr - * - * Get the underlying pointer for ruby object +val+ and return it as a - * Fiddle::Pointer object. - */ -static VALUE -rb_dlptr_s_to_ptr(VALUE self, VALUE val) -{ - VALUE ptr, wrap = val, vptr; - - if (RTEST(rb_obj_is_kind_of(val, rb_cIO))){ - rb_io_t *fptr; - FILE *fp; - GetOpenFile(val, fptr); - fp = rb_io_stdio_file(fptr); - ptr = rb_dlptr_new(fp, 0, NULL); - } - else if (RTEST(rb_obj_is_kind_of(val, rb_cString))){ - char *str = StringValuePtr(val); - ptr = rb_dlptr_new(str, RSTRING_LEN(val), NULL); - } - else if ((vptr = rb_check_funcall(val, id_to_ptr, 0, 0)) != Qundef){ - if (rb_obj_is_kind_of(vptr, rb_cPointer)){ - ptr = vptr; - wrap = 0; - } - else{ - rb_raise(rb_eFiddleError, "to_ptr should return a Fiddle::Pointer object"); - } - } - else{ - VALUE num = rb_Integer(val); - if (num == val) wrap = 0; - ptr = rb_dlptr_new(NUM2PTR(num), 0, NULL); - } - OBJ_INFECT(ptr, val); - if (wrap) RPTR_DATA(ptr)->wrap[0] = wrap; - return ptr; -} - -void -Init_fiddle_pointer(void) -{ - id_to_ptr = rb_intern("to_ptr"); - - /* Document-class: Fiddle::Pointer - * - * Fiddle::Pointer is a class to handle C pointers - * - */ - rb_cPointer = rb_define_class_under(mFiddle, "Pointer", rb_cObject); - rb_define_alloc_func(rb_cPointer, rb_dlptr_s_allocate); - rb_define_singleton_method(rb_cPointer, "malloc", rb_dlptr_s_malloc, -1); - rb_define_singleton_method(rb_cPointer, "to_ptr", rb_dlptr_s_to_ptr, 1); - rb_define_singleton_method(rb_cPointer, "[]", rb_dlptr_s_to_ptr, 1); - rb_define_method(rb_cPointer, "initialize", rb_dlptr_initialize, -1); - rb_define_method(rb_cPointer, "free=", rb_dlptr_free_set, 1); - rb_define_method(rb_cPointer, "free", rb_dlptr_free_get, 0); - rb_define_method(rb_cPointer, "to_i", rb_dlptr_to_i, 0); - rb_define_method(rb_cPointer, "to_int", rb_dlptr_to_i, 0); - rb_define_method(rb_cPointer, "to_value", rb_dlptr_to_value, 0); - rb_define_method(rb_cPointer, "ptr", rb_dlptr_ptr, 0); - rb_define_method(rb_cPointer, "+@", rb_dlptr_ptr, 0); - rb_define_method(rb_cPointer, "ref", rb_dlptr_ref, 0); - rb_define_method(rb_cPointer, "-@", rb_dlptr_ref, 0); - rb_define_method(rb_cPointer, "null?", rb_dlptr_null_p, 0); - rb_define_method(rb_cPointer, "to_s", rb_dlptr_to_s, -1); - rb_define_method(rb_cPointer, "to_str", rb_dlptr_to_str, -1); - rb_define_method(rb_cPointer, "inspect", rb_dlptr_inspect, 0); - rb_define_method(rb_cPointer, "<=>", rb_dlptr_cmp, 1); - rb_define_method(rb_cPointer, "==", rb_dlptr_eql, 1); - rb_define_method(rb_cPointer, "eql?", rb_dlptr_eql, 1); - rb_define_method(rb_cPointer, "+", rb_dlptr_plus, 1); - rb_define_method(rb_cPointer, "-", rb_dlptr_minus, 1); - rb_define_method(rb_cPointer, "[]", rb_dlptr_aref, -1); - rb_define_method(rb_cPointer, "[]=", rb_dlptr_aset, -1); - rb_define_method(rb_cPointer, "size", rb_dlptr_size_get, 0); - rb_define_method(rb_cPointer, "size=", rb_dlptr_size_set, 1); - - /* Document-const: NULL - * - * A NULL pointer - */ - rb_define_const(mFiddle, "NULL", rb_dlptr_new(0, 0, 0)); -} -- cgit v1.2.3