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File: [Pegasus] / pegasus / src / Pegasus / Common / Attic / DynamicLibraryHPUX.cpp
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Revision: 1.19, Wed Aug 16 18:36:10 2006 UTC (17 years, 10 months ago) by kumpf Branch: MAIN CVS Tags: TASK-TASK-BUG4011_WinLocalConnect-branch-New-root, TASK-TASK-BUG4011_WinLocalConnect-branch-New-merged_out_to_branch, TASK-TASK-BUG4011_WinLocalConnect-branch-New-merged_out_from_trunk, TASK-TASK-BUG4011_WinLocalConnect-branch-New-merged_in_to_trunk, TASK-TASK-BUG4011_WinLocalConnect-branch-New-merged_in_from_branch, TASK-TASK-BUG4011_WinLocalConnect-branch-New-branch, TASK-PEP268_SSLClientCertificatePropagation-root, TASK-PEP268_SSLClientCertificatePropagation-merged_out_to_branch, TASK-PEP268_SSLClientCertificatePropagation-merged_out_from_trunk, TASK-PEP268_SSLClientCertificatePropagation-merged_in_to_trunk, TASK-PEP268_SSLClientCertificatePropagation-merged_in_from_branch, TASK-PEP268_SSLClientCertificatePropagation-branch, TASK-PEP267_SLPReregistrationSupport-root, TASK-PEP267_SLPReregistrationSupport-merging_out_to_branch, TASK-PEP267_SLPReregistrationSupport-merging_out_from_trunk, TASK-PEP267_SLPReregistrationSupport-merged_out_to_branch, TASK-PEP267_SLPReregistrationSupport-merged_out_from_trunk, TASK-PEP267_SLPReregistrationSupport-merged_in_to_trunk, TASK-PEP267_SLPReregistrationSupport-merged_in_from_branch, TASK-PEP267_SLPReregistrationSupport-branch, TASK-Bugs5690_3913_RemoteCMPI-root, TASK-Bugs5690_3913_RemoteCMPI-merged_out_to_branch, TASK-Bugs5690_3913_RemoteCMPI-merged_out_from_trunk, TASK-Bugs5690_3913_RemoteCMPI-merged_in_to_trunk, TASK-Bugs5690_3913_RemoteCMPI-merged_in_from_branch, TASK-Bugs5690_3913_RemoteCMPI-branch, TASK-Bug2021_RemoteCMPIonWindows-root, TASK-Bug2021_RemoteCMPIonWindows-merged_out_to_branch, TASK-Bug2021_RemoteCMPIonWindows-merged_out_from_trunk, TASK-Bug2021_RemoteCMPIonWindows-merged_in_to_trunk, TASK-Bug2021_RemoteCMPIonWindows-merged_in_from_branch, TASK-Bug2021_RemoteCMPIonWindows-branch, TASK-Bug2021_RCMPIonWindows-root, TASK-Bug2021_RCMPIonWindows-merged_out_to_branch, TASK-Bug2021_RCMPIonWindows-merged_out_from_trunk, TASK-Bug2021_RCMPIonWindows-merged_in_to_trunk, TASK-Bug2021_RCMPIonWindows-merged_in_from_branch, TASK-Bug2021_RCMPIonWindows-branch, TASK-BUG4011_WinLocalConnect-branch-New Changes since 1.18: +7 -6 lines BUG#: 5388 TITLE: Use conventional names in DynamicLibrary typedefs DESCRIPTION: Rename the LIBRARY_HANDLE and LIBRARY_SYMBOL typedefs. |
//%2006//////////////////////////////////////////////////////////////////////// // // Copyright (c) 2000, 2001, 2002 BMC Software; Hewlett-Packard Development // Company, L.P.; IBM Corp.; The Open Group; Tivoli Systems. // Copyright (c) 2003 BMC Software; Hewlett-Packard Development Company, L.P.; // IBM Corp.; EMC Corporation, The Open Group. // Copyright (c) 2004 BMC Software; Hewlett-Packard Development Company, L.P.; // IBM Corp.; EMC Corporation; VERITAS Software Corporation; The Open Group. // Copyright (c) 2005 Hewlett-Packard Development Company, L.P.; IBM Corp.; // EMC Corporation; VERITAS Software Corporation; The Open Group. // Copyright (c) 2006 Hewlett-Packard Development Company, L.P.; IBM Corp.; // EMC Corporation; Symantec Corporation; The Open Group. // // Permission is hereby granted, free of charge, to any person obtaining a copy // of this software and associated documentation files (the "Software"), to // deal in the Software without restriction, including without limitation the // rights to use, copy, modify, merge, publish, distribute, sublicense, and/or // sell copies of the Software, and to permit persons to whom the Software is // furnished to do so, subject to the following conditions: // // THE ABOVE COPYRIGHT NOTICE AND THIS PERMISSION NOTICE SHALL BE INCLUDED IN // ALL COPIES OR SUBSTANTIAL PORTIONS OF THE SOFTWARE. THE SOFTWARE IS PROVIDED // "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT // LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR // PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT // HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN // ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. // //============================================================================== // //%///////////////////////////////////////////////////////////////////////////// #include "DynamicLibrary.h" #include <Pegasus/Common/ArrayInternal.h> #include <Pegasus/Common/Pair.h> #include <Pegasus/Common/System.h> #include <Pegasus/Common/Tracer.h> #include <dl.h> PEGASUS_NAMESPACE_BEGIN // the HPUX dynamic library load and unload routines do not keep a reference // count. this implies that if a library were loaded multiple times, a single // unload will release the library from the process thereby potentially leaving // dangling references behind. this is a tenative implementation that // encapsulates this behavior from users of the DynamicLibrary object. the goal // release the library only after an equal number of loads and unloads have // occured. static Array<Pair<DynamicLibrary::DynamicLibraryHandle, int> > _references; static Mutex _mutex; static Uint32 _increment_handle(DynamicLibrary::DynamicLibraryHandle handle) { AutoMutex autoMutex(_mutex); // seek and increment for (Uint32 i = 0, n = _references.size(); i < n; i++) { if (handle == _references[i].first) { Uint32 n = ++_references[i].second; return n; } } // not found, append and set at 1 _references.append( Pair<DynamicLibrary::DynamicLibraryHandle, int>(handle, 1)); return 1; } static Uint32 _decrement_handle(DynamicLibrary::DynamicLibraryHandle handle) { AutoMutex autoMutex(_mutex); // seek and decrement for (Uint32 i = 0, n = _references.size(); i < n; i++) { if (handle == _references[i].first) { Uint32 n = --_references[i].second; if(n == 0) { _references.remove(i); } return n; } } // not found, must be 0 return 0; } Boolean DynamicLibrary::_load() { PEG_METHOD_ENTER(TRC_OS_ABSTRACTION, "DynamicLibrary::_load()"); CString cstr = _fileName.getCString(); Tracer::trace(TRC_OS_ABSTRACTION, Tracer::LEVEL2, "Attempting to load library %s", (const char*)cstr); if (System::bindVerbose) { _handle = shl_load(cstr, BIND_IMMEDIATE | DYNAMIC_PATH | BIND_VERBOSE, 0L); } else { _handle = shl_load(cstr, BIND_IMMEDIATE | DYNAMIC_PATH, 0L); } Tracer::trace(TRC_OS_ABSTRACTION, Tracer::LEVEL2, "After loading lib %s, error code is %d", (const char*)cstr, (_handle == (void *)0)?errno:0); if (_handle != 0) { // increment handle if valid _increment_handle(_handle); } else { // If shl_load() returns NULL, errno is set to indicate the error _loadErrorMessage = strerror(errno); } PEG_METHOD_EXIT(); return(isLoaded()); } void DynamicLibrary::_unload() { // decrement handle and unload the library only if the reference count is 0 if (_decrement_handle(_handle) == 0) { shl_unload(reinterpret_cast<shl_t>(_handle)); } } DynamicLibrary::DynamicSymbolHandle DynamicLibrary::getSymbol( const String & symbolName) { PEGASUS_ASSERT(isLoaded()); DynamicSymbolHandle func = 0; CString cstr = symbolName.getCString(); if (shl_findsym((shl_t *)&_handle, cstr, TYPE_UNDEFINED, &func) == 0) { return func; } // NOTE: should the underscore be prepended by the caller or should // this be a compile time option? cstr = String(String("_") + symbolName).getCString(); if (shl_findsym((shl_t *)_handle, cstr, TYPE_UNDEFINED, &func) == 0) { return func; } return 0; } PEGASUS_NAMESPACE_END
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