153 lines
4.8 KiB
C++
153 lines
4.8 KiB
C++
/*
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*
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* @APPLE_LICENSE_HEADER_START@
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*
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* Copyright (c) 1999-2008 Apple Inc. All Rights Reserved.
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*
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* This file contains Original Code and/or Modifications of Original Code
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* as defined in and that are subject to the Apple Public Source License
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* Version 2.0 (the 'License'). You may not use this file except in
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* compliance with the License. Please obtain a copy of the License at
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* http://www.opensource.apple.com/apsl/ and read it before using this
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* file.
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*
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* The Original Code and all software distributed under the License are
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* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
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* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
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* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
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* Please see the License for the specific language governing rights and
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* limitations under the License.
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*
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* @APPLE_LICENSE_HEADER_END@
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*
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*/
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/*
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File: OSCodeFragment.cpp
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Contains: Implementation of object defined in OSCodeFragment.h
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*/
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#include <stdlib.h>
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#include "SafeStdLib.h"
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#include <stdio.h>
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#include "MyAssert.h"
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#if __Win32__
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// Win32 includes here
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#elif __MacOSX__
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#include <CoreFoundation/CFString.h>
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#include <CoreFoundation/CFBundle.h>
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#else
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#include <dlfcn.h>
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#endif
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#include "OSCodeFragment.h"
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void OSCodeFragment::Initialize()
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{
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// does nothing...should do any CFM initialization here
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}
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OSCodeFragment::OSCodeFragment(const char* inPath)
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: fFragmentP(NULL)
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{
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#if defined(HPUX) || defined(HPUX10)
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shl_t handle;
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fFragmentP = shl_load(inPath, BIND_IMMEDIATE|BIND_VERBOSE|BIND_NOSTART, 0L);
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#elif defined(OSF1) ||\
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(defined(__FreeBSD_version) && (__FreeBSD_version >= 220000))
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fFragmentP = dlopen((char *)inPath, RTLD_NOW | RTLD_GLOBAL);
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#elif defined(__FreeBSD__)
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fFragmentP = dlopen(inPath, RTLD_NOW);
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#elif defined(__sgi__)
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fFragmentP = dlopen(inPath, RTLD_NOW); // not sure this should be either RTLD_NOW or RTLD_LAZY
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#elif defined(__Win32__)
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fFragmentP = ::LoadLibrary(inPath);
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#elif defined(__MacOSX__)
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CFStringRef theString = CFStringCreateWithCString( kCFAllocatorDefault, inPath, kCFStringEncodingASCII);
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//
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// In MacOSX, our "fragments" are CF bundles, which are really
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// directories, so our paths are paths to a directory
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CFURLRef bundleURL = CFURLCreateWithFileSystemPath( kCFAllocatorDefault,
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theString,
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kCFURLPOSIXPathStyle,
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true);
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//
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// I figure CF is safe about having NULL passed
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// into its functions (if fBundle failed to get created).
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// So, I won't worry about error checking myself
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fFragmentP = CFBundleCreate( kCFAllocatorDefault, bundleURL );
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Boolean success = false;
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if (fFragmentP != NULL)
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success = CFBundleLoadExecutable( fFragmentP );
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if (!success && fFragmentP != NULL)
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{
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CFRelease( fFragmentP );
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fFragmentP = NULL;
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}
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CFRelease(bundleURL);
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CFRelease(theString);
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#else
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fFragmentP = dlopen(inPath, RTLD_NOW | RTLD_GLOBAL);
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//fprintf (stderr, "%s\n", dlerror());
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#endif
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}
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OSCodeFragment::~OSCodeFragment()
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{
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if (fFragmentP == NULL)
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return;
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#if defined(HPUX) || defined(HPUX10)
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shl_unload((shl_t)fFragmentP);
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#elif defined(__Win32__)
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BOOL theErr = ::FreeLibrary(fFragmentP);
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Assert(theErr);
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#elif defined(__MacOSX__)
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CFBundleUnloadExecutable( fFragmentP );
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CFRelease( fFragmentP );
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#else
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dlclose(fFragmentP);
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#endif
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}
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void* OSCodeFragment::GetSymbol(const char* inSymbolName)
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{
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if (fFragmentP == NULL)
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return NULL;
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#if defined(HPUX) || defined(HPUX10)
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void *symaddr = NULL;
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int status;
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errno = 0;
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status = shl_findsym((shl_t *)&fFragmentP, symname, TYPE_PROCEDURE, &symaddr);
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if (status == -1 && errno == 0) /* try TYPE_DATA instead */
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status = shl_findsym((shl_t *)&fFragmentP, inSymbolName, TYPE_DATA, &symaddr);
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return (status == -1 ? NULL : symaddr);
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#elif defined(DLSYM_NEEDS_UNDERSCORE)
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char *symbol = (char*)malloc(sizeof(char)*(strlen(inSymbolName)+2));
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void *retval;
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qtss_sprintf(symbol, "_%s", inSymbolName);
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retval = dlsym(fFragmentP, symbol);
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free(symbol);
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return retval;
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#elif defined(__Win32__)
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return ::GetProcAddress(fFragmentP, inSymbolName);
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#elif defined(__MacOSX__)
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CFStringRef theString = CFStringCreateWithCString( kCFAllocatorDefault, inSymbolName, kCFStringEncodingASCII);
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void* theSymbol = (void*)CFBundleGetFunctionPointerForName( fFragmentP, theString );
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CFRelease(theString);
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return theSymbol;
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#else
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return dlsym(fFragmentP, inSymbolName);
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#endif
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}
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