Return to Memory.h CVS log | Up to [Pegasus] / pegasus / src / Pegasus / Common |
File: [Pegasus] / pegasus / src / Pegasus / Common / Memory.h
(download)
Revision: 1.23, Wed Jul 12 20:10:58 2006 UTC (17 years, 11 months ago) by kumpf Branch: MAIN CVS Tags: TASK_BUG_5314_IPC_REFACTORING_ROOT, TASK_BUG_5314_IPC_REFACTORING_BRANCH, TASK_BUG_5314_IPC_REFACTORING-V1, 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 1.22: +10 -0 lines BUG#: 5215 TITLE: Array destruction has suboptimal performance DESCRIPTION: Reverse the order of destruction of Array elements on HP-UX for better memory allocator performance. |
//%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. // //============================================================================== // // Author: Mike Brasher (mbrasher@bmc.com) // // Modified By: David Dillard, VERITAS Software Corp. // (david.dillard@veritas.com) // //%///////////////////////////////////////////////////////////////////////////// //////////////////////////////////////////////////////////////////////////////// // // Memory.h // // This file contains assorted memory-oriented routines: // // Zeros(): fills memory with zeros. // Destroy(): destructs multiple objects in contiguous memory. // CopyToRaw(): copies multiple objects to raw memory. // InitializeRaw(): default constructs mulitple object over raw memory. // // Each of these is a template but specializations are provide for // efficiency (which in some cases removes uncessary loops). // //////////////////////////////////////////////////////////////////////////////// #ifndef Pegasus_Memory_h #define Pegasus_Memory_h #include <cstring> #include <memory.h> #include <Pegasus/Common/Config.h> #include <Pegasus/Common/CIMType.h> #include <Pegasus/Common/Char16.h> PEGASUS_NAMESPACE_BEGIN template<class T> inline void Zeros(T* items, Uint32 size) { memset(items, 0, sizeof(T) * size); } template<class T> inline void Destroy(T* items, Uint32 size) { #ifdef PEGASUS_OS_HPUX // Empirical evidence shows that the memory allocator on HP-UX performs // better when deallocating more recently allocated memory first (LIFO). // Since most arrays are built up by appending elements to the end, it is // advantageous to destruct the elements in reverse order. items += size-1; while (size--) (items--)->~T(); #else while (size--) items++->~T(); #endif } template<class T> inline void CopyToRaw(T* to, const T* from, Uint32 size) { while (size--) { // The following fails on TRU64: // new(to++) T(*from++); // Probably a compiler error so I changed it to this: // Mike Brasher new(to) T(*from); to++; from++; } } inline void CopyToRaw(char* to, const char* from, Uint32 size) { memcpy(to, from, sizeof(char) * size); } inline void CopyToRaw(Boolean* to, const Boolean* from, Uint32 size) { memcpy(to, from, sizeof(Boolean) * size); } inline void CopyToRaw(Uint8* to, const Uint8* from, Uint32 size) { memcpy(to, from, sizeof(Uint8) * size); } inline void CopyToRaw(Sint8* to, const Sint8* from, Uint32 size) { memcpy(to, from, sizeof(Sint8) * size); } inline void CopyToRaw(Uint16* to, const Uint16* from, Uint32 size) { memcpy(to, from, sizeof(Uint16) * size); } inline void CopyToRaw(Sint16* to, const Sint16* from, Uint32 size) { memcpy(to, from, sizeof(Sint16) * size); } inline void CopyToRaw(Uint32* to, const Uint32* from, Uint32 size) { memcpy(to, from, sizeof(Uint32) * size); } inline void CopyToRaw(Sint32* to, const Sint32* from, Uint32 size) { memcpy(to, from, sizeof(Sint32) * size); } inline void CopyToRaw(Uint64* to, const Uint64* from, Uint32 size) { memcpy(to, from, sizeof(Uint64) * size); } inline void CopyToRaw(Sint64* to, const Sint64* from, Uint32 size) { memcpy(to, from, sizeof(Sint64) * size); } inline void CopyToRaw(Real32* to, const Real32* from, Uint32 size) { memcpy(to, from, sizeof(Real32) * size); } inline void CopyToRaw(Real64* to, const Real64* from, Uint32 size) { memcpy(to, from, sizeof(Real64) * size); } inline void CopyToRaw(Char16* to, const Char16* from, Uint32 size) { memcpy(to, from, sizeof(Char16) * size); } template<class T> inline void InitializeRaw(T* items, Uint32 size) { while (size--) { new(items) T(); items++; } } #define PEGASUS_MEMORY_FUNCTIONS(T) \ inline void Destroy(T*, Uint32) { } \ inline void InitializeRaw(T* items, Uint32 size) { Zeros(items, size); } PEGASUS_MEMORY_FUNCTIONS(char*) PEGASUS_MEMORY_FUNCTIONS(const char*) PEGASUS_MEMORY_FUNCTIONS(Boolean) PEGASUS_MEMORY_FUNCTIONS(Uint8) PEGASUS_MEMORY_FUNCTIONS(Sint8) PEGASUS_MEMORY_FUNCTIONS(Uint16) PEGASUS_MEMORY_FUNCTIONS(Sint16) PEGASUS_MEMORY_FUNCTIONS(Uint32) PEGASUS_MEMORY_FUNCTIONS(Sint32) PEGASUS_MEMORY_FUNCTIONS(Uint64) PEGASUS_MEMORY_FUNCTIONS(Sint64) PEGASUS_MEMORY_FUNCTIONS(Real32) PEGASUS_MEMORY_FUNCTIONS(Real64) PEGASUS_MEMORY_FUNCTIONS(Char16) PEGASUS_NAMESPACE_END #endif /* Pegasus_Memory_h */
No CVS admin address has been configured |
Powered by ViewCVS 0.9.2 |