mirror of
https://github.com/mozilla/gecko-dev.git
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265 lines
7.6 KiB
C++
265 lines
7.6 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: NPL 1.1/GPL 2.0/LGPL 2.1
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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 1.1 (the "License"); you may not use this file except in
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* compliance with the License. You may obtain a copy of the License at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the NPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the NPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#include "nspr.h"
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#include "prlink.h"
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#include "nsMemory.h"
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#include "nsXPCOMPrivate.h"
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#if defined(XP_WIN32)
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#include <windows.h> // for SetProcessWorkingSetSize()
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#include <malloc.h> // for _heapmin()
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#endif
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static PRLibrary *xpcomLib = nsnull;
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static XPCOMFunctions *xpcomFunctions = nsnull;
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#ifdef DEBUG_dougt
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#define XPCOM_GLUE_FLUSH_HEAP
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#endif
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//#define XPCOM_GLUE_NO_DYNAMIC_LOADING
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// seawood tells me there isn't a better way...
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#ifdef XP_PC
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#define XPCOM_DLL "xpcom.dll"
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#else
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#ifdef XP_MAC
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#define XPCOM_DLL "XPCOM_DLL"
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#else
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#define XPCOM_DLL "libxpcom.so"
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#endif
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#endif
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extern "C"
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nsresult NS_COM XPCOMGlueStartup(const char* xpcomFile)
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{
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#ifdef XPCOM_GLUE_NO_DYNAMIC_LOADING
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return NS_OK;
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#else
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nsresult rv;
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const char* libFile;
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if (!xpcomFile)
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libFile = XPCOM_DLL;
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else
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libFile = xpcomFile;
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xpcomLib = PR_LoadLibrary(libFile);
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if (!xpcomLib)
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return NS_ERROR_FAILURE;
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GetFrozenFunctionsFunc function =
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(GetFrozenFunctionsFunc)PR_FindSymbol(xpcomLib, "NS_GetFrozenFunctions");
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if (!function) {
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PR_UnloadLibrary(xpcomLib);
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xpcomLib = nsnull;
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return NS_ERROR_FAILURE;
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}
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xpcomFunctions = (XPCOMFunctions*) calloc(1, sizeof(XPCOMFunctions));
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if (!xpcomFunctions){
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PR_UnloadLibrary(xpcomLib);
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xpcomLib = nsnull;
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return NS_ERROR_FAILURE;
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}
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xpcomFunctions->version = XPCOM_GLUE_VERSION;
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xpcomFunctions->size = sizeof(XPCOMFunctions);
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rv = (*function)(xpcomFunctions);
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if (NS_FAILED(rv)) {
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free(xpcomFunctions);
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xpcomFunctions = nsnull;
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PR_UnloadLibrary(xpcomLib);
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xpcomLib = nsnull;
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return NS_ERROR_FAILURE;
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}
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return NS_OK;
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#endif
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}
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#ifdef XPCOM_GLUE_FLUSH_HEAP
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static void FlushHeap()
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{
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#if defined(XP_WIN32)
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// Heap compaction and shrink working set now
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#ifdef DEBUG_dougt
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PRIntervalTime start = PR_IntervalNow();
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int ret =
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#endif
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_heapmin();
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#ifdef DEBUG_dougt
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printf("DEBUG: HeapCompact() %s - %d ms\n", (!ret ? "success" : "FAILED"),
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PR_IntervalToMilliseconds(PR_IntervalNow()-start));
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#endif
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// shrink working set if we can
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// This function call is available only on winnt and above.
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typedef BOOL WINAPI SetProcessWorkingSetProc(HANDLE hProcess, SIZE_T dwMinimumWorkingSetSize,
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SIZE_T dwMaximumWorkingSetSize);
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SetProcessWorkingSetProc *setProcessWorkingSetSizeP = NULL;
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HMODULE kernel = GetModuleHandle("kernel32.dll");
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if (kernel) {
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setProcessWorkingSetSizeP = (SetProcessWorkingSetProc *)
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GetProcAddress(kernel, "SetProcessWorkingSetSize");
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}
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if (setProcessWorkingSetSizeP) {
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// shrink working set
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#ifdef DEBUG_dougt
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start = PR_IntervalNow();
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#endif
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(*setProcessWorkingSetSizeP)(GetCurrentProcess(), -1, -1);
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#ifdef DEBUG_dougt
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printf("DEBUG: Honey! I shrunk the resident-set! - %d ms\n",
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PR_IntervalToMilliseconds(PR_IntervalNow() - start));
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#endif
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}
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#endif
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}
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#endif
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extern "C"
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nsresult NS_COM XPCOMGlueShutdown()
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{
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#ifdef XPCOM_GLUE_NO_DYNAMIC_LOADING
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return NS_OK;
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#else
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if (xpcomFunctions) {
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free ((void*)xpcomFunctions);
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xpcomFunctions = nsnull;
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}
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if (xpcomLib) {
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PR_UnloadLibrary(xpcomLib);
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xpcomLib = nsnull;
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}
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#ifdef XPCOM_GLUE_FLUSH_HEAP
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// should the application do this instead of us?
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FlushHeap();
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#endif
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return NS_OK;
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#endif
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}
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#ifndef XPCOM_GLUE_NO_DYNAMIC_LOADING
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extern "C" NS_COM nsresult
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NS_InitXPCOM2(nsIServiceManager* *result,
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nsIFile* binDirectory,
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nsIDirectoryServiceProvider* appFileLocationProvider)
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{
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if (!xpcomFunctions)
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return NS_ERROR_NOT_INITIALIZED;
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return xpcomFunctions->init(result, binDirectory, appFileLocationProvider);
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}
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extern "C" NS_COM nsresult
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NS_ShutdownXPCOM(nsIServiceManager* servMgr)
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{
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if (!xpcomFunctions)
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return NS_ERROR_NOT_INITIALIZED;
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return xpcomFunctions->shutdown(servMgr);
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}
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extern "C" NS_COM nsresult
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NS_GetServiceManager(nsIServiceManager* *result)
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{
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if (!xpcomFunctions)
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return NS_ERROR_NOT_INITIALIZED;
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return xpcomFunctions->getServiceManager(result);
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}
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extern "C" NS_COM nsresult
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NS_GetComponentManager(nsIComponentManager* *result)
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{
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if (!xpcomFunctions)
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return NS_ERROR_NOT_INITIALIZED;
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return xpcomFunctions->getComponentManager(result);
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}
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extern "C" NS_COM nsresult
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NS_GetComponentRegistrar(nsIComponentRegistrar* *result)
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{
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if (!xpcomFunctions)
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return NS_ERROR_NOT_INITIALIZED;
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return xpcomFunctions->getComponentRegistrar(result);
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}
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extern "C" NS_COM nsresult
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NS_GetMemoryManager(nsIMemory* *result)
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{
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if (!xpcomFunctions)
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return NS_ERROR_NOT_INITIALIZED;
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return xpcomFunctions->getMemoryManager(result);
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}
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extern "C" NS_COM nsresult
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NS_NewLocalFile(const nsAString &path, PRBool followLinks, nsILocalFile* *result)
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{
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if (!xpcomFunctions)
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return NS_ERROR_NOT_INITIALIZED;
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return xpcomFunctions->newLocalFile(path, followLinks, result);
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}
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extern "C" NS_COM nsresult
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NS_NewNativeLocalFile(const nsACString &path, PRBool followLinks, nsILocalFile* *result)
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{
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if (!xpcomFunctions)
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return NS_ERROR_NOT_INITIALIZED;
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return xpcomFunctions->newNativeLocalFile(path, followLinks, result);
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}
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extern "C" NS_COM nsresult
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NS_RegisterXPCOMExitRoutine(XPCOMExitRoutine exitRoutine, PRUint32 priority)
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{
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if (!xpcomFunctions)
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return NS_ERROR_NOT_INITIALIZED;
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return xpcomFunctions->registerExitRoutine(exitRoutine, priority);
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}
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extern "C" NS_COM nsresult
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NS_UnregisterXPCOMExitRoutine(XPCOMExitRoutine exitRoutine)
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{
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if (!xpcomFunctions)
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return NS_ERROR_NOT_INITIALIZED;
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return xpcomFunctions->unregisterExitRoutine(exitRoutine);
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}
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#endif // #ifndef XPCOM_GLUE_NO_DYNAMIC_LOADING
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