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Dll abstraction
This commit is contained in:
dp%netscape.com
parent
9540122668
commit
c1ff8cabbd
110
xpcom/components/xcDll.cpp
Normal file
110
xpcom/components/xcDll.cpp
Normal file
@ -0,0 +1,110 @@
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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/*
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* The contents of this file are subject to the Netscape Public License
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* Version 1.0 (the "NPL"); you may not use this file except in
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* compliance with the NPL. You may obtain a copy of the NPL at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the NPL is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
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* for the specific language governing rights and limitations under the
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* NPL.
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*
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* The Initial Developer of this code under the NPL is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All Rights
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* Reserved.
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*/
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/* Dll
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*
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* Abstraction of a Dll. Stores modifiedTime and size for easy detection of
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* change in dll.
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*
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* dp Suresh <dp@netscape.com>
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*/
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#include "xcDll.h"
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#include "plstr.h" // strdup and strfree
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Dll::Dll(const char *libFullPath) : m_instance(NULL), m_status(DLL_OK),
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m_fullpath(NULL), m_lastModTime(0), m_size(0)
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{
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if (libFullPath == NULL)
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{
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m_status == DLL_INVALID_PARAM;
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return;
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}
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m_fullpath = PL_strdup(libFullPath);
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if (m_fullpath == NULL)
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{
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// No more memory
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m_status = DLL_NO_MEM;
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return;
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}
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PRFileInfo64 statinfo;
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if (PR_GetFileInfo64(m_fullpath, &statinfo) != PR_SUCCESS)
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{
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m_status = DLL_STAT_ERROR;
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return;
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}
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if (statinfo.type != PR_FILE_FILE)
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{
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// Not a file. Cant work with it.
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m_status = DLL_NOT_FILE;
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return;
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}
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m_size = statinfo.size;
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m_lastModTime = statinfo.modifyTime;
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m_status = DLL_OK;
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}
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Dll::~Dll(void)
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{
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if (m_instance != NULL)
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Unload();
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if (m_fullpath != NULL) PL_strfree(m_fullpath);
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m_fullpath = NULL;
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}
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PRBool Dll::Load(void)
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{
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if (m_status != DLL_OK)
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{
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return (PR_FALSE);
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}
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if (m_instance != NULL)
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{
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// Already loaded
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return (PR_TRUE);
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}
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m_instance = PR_LoadLibrary(m_fullpath);
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return ((m_instance == NULL) ? PR_FALSE : PR_TRUE);
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}
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PRBool Dll::Unload(void)
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{
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if (m_status != DLL_OK || m_instance == NULL)
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return (PR_FALSE);
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PRStatus ret = PR_UnloadLibrary(m_instance);
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if (ret == PR_SUCCESS)
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{
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m_instance = NULL;
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return (PR_TRUE);
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}
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else
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return (PR_FALSE);
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}
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void * Dll::FindSymbol(const char *symbol)
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{
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if (symbol == NULL)
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return (NULL);
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// If not already loaded, load it now.
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if (Load() != PR_TRUE)
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return (NULL);
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return (PR_FindSymbol(m_instance, symbol));
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}
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69
xpcom/components/xcDll.h
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69
xpcom/components/xcDll.h
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@ -0,0 +1,69 @@
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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/*
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* The contents of this file are subject to the Netscape Public License
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* Version 1.0 (the "NPL"); you may not use this file except in
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* compliance with the NPL. You may obtain a copy of the NPL at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the NPL is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
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* for the specific language governing rights and limitations under the
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* NPL.
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*
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* The Initial Developer of this code under the NPL is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All Rights
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* Reserved.
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*/
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/* Dll
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*
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* Programmatic representation of a dll. Stores modifiedTime and size for
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* easy detection of change in dll.
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*
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* dp Suresh <dp@netscape.com>
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*/
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#include "prio.h"
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#include "prlink.h"
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typedef enum DllStatus
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{
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DLL_OK = 0,
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DLL_NO_MEM = 1,
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DLL_STAT_ERROR = 2,
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DLL_NOT_FILE = 3,
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DLL_INVALID_PARAM = 4
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} DllStatus;
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class Dll
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{
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private:
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char *m_fullpath; // system format full filename of dll
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PRTime m_lastModTime; // last modified time
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PRUint64 m_size; // size of the dynamic library
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PRLibrary *m_instance; // Load instance
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DllStatus m_status; // holds current status
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public:
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Dll(const char *libFullPath);
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//DllEntry(const char *library, PRTime modTime, PR_Uint32 size);
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~Dll(void);
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// Status checking on oprations
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DllStatus GetStatus(void) { return (m_status); }
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// Dll Loading
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PRBool Load(void);
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PRBool Unload(void);
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PRBool IsLoaded(void)
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{
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return ((m_instance != 0) ? PR_TRUE : PR_FALSE);
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}
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void *FindSymbol(const char *symbol);
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PRTime GetLastModifiedTime(void) { return(m_lastModTime); }
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PRUint64 GetSize(void) { return(m_size); }
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PRLibrary *GetInstance(void) { return (m_instance); }
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};
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110
xpcom/src/xcDll.cpp
Normal file
110
xpcom/src/xcDll.cpp
Normal file
@ -0,0 +1,110 @@
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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/*
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* The contents of this file are subject to the Netscape Public License
|
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* Version 1.0 (the "NPL"); you may not use this file except in
|
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* compliance with the NPL. You may obtain a copy of the NPL at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the NPL is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
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* for the specific language governing rights and limitations under the
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* NPL.
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*
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* The Initial Developer of this code under the NPL is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All Rights
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* Reserved.
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*/
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/* Dll
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*
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* Abstraction of a Dll. Stores modifiedTime and size for easy detection of
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* change in dll.
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*
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* dp Suresh <dp@netscape.com>
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*/
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#include "xcDll.h"
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#include "plstr.h" // strdup and strfree
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Dll::Dll(const char *libFullPath) : m_instance(NULL), m_status(DLL_OK),
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m_fullpath(NULL), m_lastModTime(0), m_size(0)
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{
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if (libFullPath == NULL)
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{
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m_status == DLL_INVALID_PARAM;
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return;
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}
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m_fullpath = PL_strdup(libFullPath);
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if (m_fullpath == NULL)
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{
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// No more memory
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m_status = DLL_NO_MEM;
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return;
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}
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PRFileInfo64 statinfo;
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if (PR_GetFileInfo64(m_fullpath, &statinfo) != PR_SUCCESS)
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{
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m_status = DLL_STAT_ERROR;
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return;
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}
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if (statinfo.type != PR_FILE_FILE)
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{
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// Not a file. Cant work with it.
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m_status = DLL_NOT_FILE;
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return;
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}
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m_size = statinfo.size;
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m_lastModTime = statinfo.modifyTime;
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m_status = DLL_OK;
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}
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Dll::~Dll(void)
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{
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if (m_instance != NULL)
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Unload();
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if (m_fullpath != NULL) PL_strfree(m_fullpath);
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m_fullpath = NULL;
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}
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PRBool Dll::Load(void)
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{
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if (m_status != DLL_OK)
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{
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return (PR_FALSE);
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}
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if (m_instance != NULL)
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{
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// Already loaded
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return (PR_TRUE);
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}
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m_instance = PR_LoadLibrary(m_fullpath);
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return ((m_instance == NULL) ? PR_FALSE : PR_TRUE);
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}
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PRBool Dll::Unload(void)
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{
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if (m_status != DLL_OK || m_instance == NULL)
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return (PR_FALSE);
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PRStatus ret = PR_UnloadLibrary(m_instance);
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if (ret == PR_SUCCESS)
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{
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m_instance = NULL;
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return (PR_TRUE);
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}
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else
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return (PR_FALSE);
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}
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void * Dll::FindSymbol(const char *symbol)
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{
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if (symbol == NULL)
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return (NULL);
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// If not already loaded, load it now.
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if (Load() != PR_TRUE)
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return (NULL);
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return (PR_FindSymbol(m_instance, symbol));
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}
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69
xpcom/src/xcDll.h
Normal file
69
xpcom/src/xcDll.h
Normal file
@ -0,0 +1,69 @@
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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/*
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* The contents of this file are subject to the Netscape Public License
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* Version 1.0 (the "NPL"); you may not use this file except in
|
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* compliance with the NPL. You may obtain a copy of the NPL at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the NPL is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
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* for the specific language governing rights and limitations under the
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* NPL.
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*
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* The Initial Developer of this code under the NPL is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All Rights
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* Reserved.
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*/
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/* Dll
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*
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* Programmatic representation of a dll. Stores modifiedTime and size for
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* easy detection of change in dll.
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*
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* dp Suresh <dp@netscape.com>
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*/
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#include "prio.h"
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#include "prlink.h"
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typedef enum DllStatus
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{
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DLL_OK = 0,
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DLL_NO_MEM = 1,
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DLL_STAT_ERROR = 2,
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DLL_NOT_FILE = 3,
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DLL_INVALID_PARAM = 4
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} DllStatus;
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class Dll
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{
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private:
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char *m_fullpath; // system format full filename of dll
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PRTime m_lastModTime; // last modified time
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PRUint64 m_size; // size of the dynamic library
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PRLibrary *m_instance; // Load instance
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DllStatus m_status; // holds current status
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public:
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Dll(const char *libFullPath);
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//DllEntry(const char *library, PRTime modTime, PR_Uint32 size);
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~Dll(void);
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// Status checking on oprations
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DllStatus GetStatus(void) { return (m_status); }
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// Dll Loading
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PRBool Load(void);
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PRBool Unload(void);
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PRBool IsLoaded(void)
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{
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return ((m_instance != 0) ? PR_TRUE : PR_FALSE);
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}
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void *FindSymbol(const char *symbol);
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PRTime GetLastModifiedTime(void) { return(m_lastModTime); }
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PRUint64 GetSize(void) { return(m_size); }
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PRLibrary *GetInstance(void) { return (m_instance); }
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};
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