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nsComponentManager.cpp
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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 1998
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
*
* Alternatively, the contents of this file may be used under the terms of
* either of the GNU General Public License Version 2 or later (the "GPL"),
* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK *****
*
* This Original Code has been modified by IBM Corporation.
* Modifications made by IBM described herein are
* Copyright (c) International Business Machines
* Corporation, 2000
*
* Modifications to Mozilla code or documentation
* identified per MPL Section 3.3
*
* Date Modified by Description of modification
* 04/20/2000 IBM Corp. Added PR_CALLBACK for Optlink use in OS2
*/
#include <stdlib.h>
#include "nscore.h"
#include "nsISupports.h"
#include "nspr.h"
#include "nsCRT.h" // for atoll
// Arena used by component manager for storing contractid string, dll
// location strings and small objects
// CAUTION: Arena align mask needs to be defined before including plarena.h
// currently from nsComponentManager.h
#define PL_ARENA_CONST_ALIGN_MASK 7
#define NS_CM_BLOCK_SIZE (1024 * 8)
#include "nsAutoLock.h"
#include "nsCOMPtr.h"
#include "nsComponentManager.h"
#include "nsDirectoryService.h"
#include "nsDirectoryServiceDefs.h"
#include "nsCategoryManager.h"
#include "nsCategoryManagerUtils.h"
#include "nsIEnumerator.h"
#include "xptiprivate.h"
#include "nsIConsoleService.h"
#include "nsIModule.h"
#include "nsIObserverService.h"
#include "nsISimpleEnumerator.h"
#include "nsIStringEnumerator.h"
#include "nsXPCOM.h"
#include "nsXPCOMPrivate.h"
#include "nsISupportsPrimitives.h"
#include "nsIClassInfo.h"
#include "nsLocalFile.h"
#include "nsReadableUtils.h"
#include "nsString.h"
#include "nsXPIDLString.h"
#include "prcmon.h"
#include "xptinfo.h" // this after nsISupports, to pick up IID so that xpt stuff doesn't try to define it itself...
#include "nsInt64.h"
#include "nsManifestLineReader.h"
#include NEW_H // for placement new
#ifdef XP_BEOS
#include <FindDirectory.h>
#include <Path.h>
#endif
#include "prlog.h"
NS_COM PRLogModuleInfo* nsComponentManagerLog = nsnull;
#if 0 || defined (DEBUG_timeless)
#define SHOW_DENIED_ON_SHUTDOWN
#define SHOW_CI_ON_EXISTING_SERVICE
#define XPCOM_CHECK_PENDING_CIDS
#endif
// Bloated registry buffer size to improve startup performance -- needs to
// be big enough to fit the entire file into memory or it'll thrash.
// 512K is big enough to allow for some future growth in the registry.
#define BIG_REGISTRY_BUFLEN (512*1024)
// Common Key Names
const char classIDKeyName[]="classID";
const char classesKeyName[]="contractID";
const char componentsKeyName[]="components";
const char xpcomComponentsKeyName[]="software/mozilla/XPCOM/components";
const char xpcomKeyName[]="software/mozilla/XPCOM";
// Common Value Names
const char classIDValueName[]="ClassID";
const char classNameValueName[]="ClassName";
const char componentCountValueName[]="ComponentsCount";
const char componentTypeValueName[]="ComponentType";
const char contractIDValueName[]="ContractID";
const char fileSizeValueName[]="FileSize";
const char inprocServerValueName[]="InprocServer";
const char lastModValueName[]="LastModTimeStamp";
const char nativeComponentType[]="application/x-mozilla-native";
const char staticComponentType[]="application/x-mozilla-static";
const char versionValueName[]="VersionString";
const static char XPCOM_ABSCOMPONENT_PREFIX[] = "abs:";
const static char XPCOM_RELCOMPONENT_PREFIX[] = "rel:";
const static char XPCOM_GRECOMPONENT_PREFIX[] = "gre:";
static const char gIDFormat[] =
"{%08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x}";
#define NS_EMPTY_IID \
{ \
0x00000000, \
0x0000, \
0x0000, \
{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00} \
}
NS_DEFINE_CID(kEmptyCID, NS_EMPTY_IID);
NS_DEFINE_CID(kCategoryManagerCID, NS_CATEGORYMANAGER_CID);
#define UID_STRING_LENGTH 39
// Set to true from NS_ShutdownXPCOM.
extern PRBool gXPCOMShuttingDown;
static void GetIDString(const nsID& aCID, char buf[UID_STRING_LENGTH])
{
PR_snprintf(buf, UID_STRING_LENGTH, gIDFormat,
aCID.m0, (PRUint32) aCID.m1, (PRUint32) aCID.m2,
(PRUint32) aCID.m3[0], (PRUint32) aCID.m3[1],
(PRUint32) aCID.m3[2], (PRUint32) aCID.m3[3],
(PRUint32) aCID.m3[4], (PRUint32) aCID.m3[5],
(PRUint32) aCID.m3[6], (PRUint32) aCID.m3[7]);
}
nsresult
nsCreateInstanceFromCategory::operator()(const nsIID& aIID, void** aInstancePtr) const
{
/*
* If I were a real man, I would consolidate this with
* nsGetServiceFromContractID::operator().
*/
nsresult rv;
nsXPIDLCString value;
nsCOMPtr<nsIComponentManager> compMgr;
nsCOMPtr<nsICategoryManager> catman =
do_GetService(kCategoryManagerCID, &rv);
if (NS_FAILED(rv)) goto error;
if (!mCategory || !mEntry) {
// when categories have defaults, use that for null mEntry
rv = NS_ERROR_NULL_POINTER;
goto error;
}
/* find the contractID for category.entry */
rv = catman->GetCategoryEntry(mCategory, mEntry,
getter_Copies(value));
if (NS_FAILED(rv)) goto error;
if (!value) {
rv = NS_ERROR_SERVICE_NOT_AVAILABLE;
goto error;
}
NS_GetComponentManager(getter_AddRefs(compMgr));
if (!compMgr)
return NS_ERROR_FAILURE;
rv = compMgr->CreateInstanceByContractID(value, mOuter, aIID, aInstancePtr);
if (NS_FAILED(rv)) {
error:
*aInstancePtr = 0;
}
if (mErrorPtr)
*mErrorPtr = rv;
return rv;
}
nsresult
nsGetServiceFromCategory::operator()(const nsIID& aIID, void** aInstancePtr) const
{
nsresult rv;
nsXPIDLCString value;
nsCOMPtr<nsICategoryManager> catman;
nsComponentManagerImpl *compMgr = nsComponentManagerImpl::gComponentManager;
if (!compMgr) {
rv = NS_ERROR_NOT_INITIALIZED;
goto error;
}
if (!mCategory || !mEntry) {
// when categories have defaults, use that for null mEntry
rv = NS_ERROR_NULL_POINTER;
goto error;
}
rv = compMgr->nsComponentManagerImpl::GetService(kCategoryManagerCID,
NS_GET_IID(nsICategoryManager),
getter_AddRefs(catman));
if (NS_FAILED(rv)) goto error;
/* find the contractID for category.entry */
rv = catman->GetCategoryEntry(mCategory, mEntry,
getter_Copies(value));
if (NS_FAILED(rv)) goto error;
if (!value) {
rv = NS_ERROR_SERVICE_NOT_AVAILABLE;
goto error;
}
rv = compMgr->
nsComponentManagerImpl::GetServiceByContractID(value,
aIID, aInstancePtr);
if (NS_FAILED(rv)) {
error:
*aInstancePtr = 0;
}
if (mErrorPtr)
*mErrorPtr = rv;
return rv;
}
////////////////////////////////////////////////////////////////////////////////
// Arena helper functions
////////////////////////////////////////////////////////////////////////////////
char *
ArenaStrndup(const char *s, PRUint32 len, PLArenaPool *arena)
{
void *mem;
// Include trailing null in the len
PL_ARENA_ALLOCATE(mem, arena, len+1);
if (mem)
memcpy(mem, s, len+1);
return static_cast<char *>(mem);
}
char*
ArenaStrdup(const char *s, PLArenaPool *arena)
{
return ArenaStrndup(s, strlen(s), arena);
}
////////////////////////////////////////////////////////////////////////////////
// Hashtable Callbacks
////////////////////////////////////////////////////////////////////////////////
PRBool PR_CALLBACK
nsFactoryEntry_Destroy(nsHashKey *aKey, void *aData, void* closure);
PR_STATIC_CALLBACK(PLDHashNumber)
factory_HashKey(PLDHashTable *aTable, const void *aKey)
{
const nsCID *cidp = reinterpret_cast<const nsCID*>(aKey);
return cidp->m0;
}
PR_STATIC_CALLBACK(PRBool)
factory_MatchEntry(PLDHashTable *aTable, const PLDHashEntryHdr *aHdr,
const void *aKey)
{
const nsFactoryTableEntry* entry =
static_cast<const nsFactoryTableEntry*>(aHdr);
const nsCID *cidp = reinterpret_cast<const nsCID*>(aKey);
return (entry->mFactoryEntry->mCid).Equals(*cidp);
}
PR_STATIC_CALLBACK(void)
factory_ClearEntry(PLDHashTable *aTable, PLDHashEntryHdr *aHdr)
{
nsFactoryTableEntry* entry = static_cast<nsFactoryTableEntry*>(aHdr);
// nsFactoryEntry is arena allocated. So we don't delete it.
// We call the destructor by hand.
entry->mFactoryEntry->~nsFactoryEntry();
PL_DHashClearEntryStub(aTable, aHdr);
}
static const PLDHashTableOps factory_DHashTableOps = {
PL_DHashAllocTable,
PL_DHashFreeTable,
factory_HashKey,
factory_MatchEntry,
PL_DHashMoveEntryStub,
factory_ClearEntry,
PL_DHashFinalizeStub,
};
PR_STATIC_CALLBACK(void)
contractID_ClearEntry(PLDHashTable *aTable, PLDHashEntryHdr *aHdr)
{
nsContractIDTableEntry* entry = static_cast<nsContractIDTableEntry*>(aHdr);
if (entry->mFactoryEntry->mLoaderType == NS_LOADER_TYPE_INVALID &&
entry->mFactoryEntry->mCid.Equals(kEmptyCID)) {
// this object is owned by the hash.
// nsFactoryEntry is arena allocated. So we don't delete it.
// We call the destructor by hand.
entry->mFactoryEntry->~nsFactoryEntry();
}
// contractIDs are arena allocated. No need to free them.
PL_DHashClearEntryStub(aTable, aHdr);
}
static const PLDHashTableOps contractID_DHashTableOps = {
PL_DHashAllocTable,
PL_DHashFreeTable,
PL_DHashStringKey,
PL_DHashMatchStringKey,
PL_DHashMoveEntryStub,
contractID_ClearEntry,
PL_DHashFinalizeStub,
};
////////////////////////////////////////////////////////////////////////////////
// Hashtable Enumeration
////////////////////////////////////////////////////////////////////////////////
typedef NS_CALLBACK(EnumeratorConverter)(PLDHashTable *table,
const PLDHashEntryHdr *hdr,
void *data,
nsISupports **retval);
class PLDHashTableEnumeratorImpl : public nsIBidirectionalEnumerator,
public nsISimpleEnumerator
{
public:
NS_DECL_ISUPPORTS
NS_DECL_NSIENUMERATOR
NS_DECL_NSIBIDIRECTIONALENUMERATOR
NS_DECL_NSISIMPLEENUMERATOR
PLDHashTableEnumeratorImpl(PLDHashTable *table,
EnumeratorConverter converter,
void *converterData);
PRInt32 Count() { return mCount; }
private:
PLDHashTableEnumeratorImpl(); /* no implementation */
~PLDHashTableEnumeratorImpl();
void ReleaseElements();
nsVoidArray mElements;
PRInt32 mCount, mCurrent;
PRMonitor* mMonitor;
struct Closure {
PRBool succeeded;
EnumeratorConverter converter;
void *data;
PLDHashTableEnumeratorImpl *impl;
};
static PLDHashOperator PR_CALLBACK Enumerator(PLDHashTable *table,
PLDHashEntryHdr *hdr,
PRUint32 number,
void *data);
};
// static
PLDHashOperator PR_CALLBACK
PLDHashTableEnumeratorImpl::Enumerator(PLDHashTable *table,
PLDHashEntryHdr *hdr,
PRUint32 number,
void *data)
{
Closure *c = reinterpret_cast<Closure *>(data);
nsISupports *converted;
if (NS_FAILED(c->converter(table, hdr, c->data, &converted)) ||
!c->impl->mElements.AppendElement(converted)) {
c->succeeded = PR_FALSE;
return PL_DHASH_STOP;
}
c->succeeded = PR_TRUE;
return PL_DHASH_NEXT;
}
PLDHashTableEnumeratorImpl::PLDHashTableEnumeratorImpl(PLDHashTable *table,
EnumeratorConverter converter,
void *converterData)
: mCurrent(0)
{
mMonitor = nsAutoMonitor::NewMonitor("PLDHashTableEnumeratorImpl");
NS_ASSERTION(mMonitor, "NULL Monitor");
nsAutoMonitor mon(mMonitor);
Closure c = { PR_FALSE, converter, converterData, this };
mCount = PL_DHashTableEnumerate(table, Enumerator, &c);
if (!c.succeeded) {
ReleaseElements();
mCount = 0;
}
}
NS_IMPL_ISUPPORTS3(PLDHashTableEnumeratorImpl,
nsIBidirectionalEnumerator,
nsIEnumerator,
nsISimpleEnumerator)
PLDHashTableEnumeratorImpl::~PLDHashTableEnumeratorImpl()
{
ReleaseElements();
// Destroy the Lock
if (mMonitor)
nsAutoMonitor::DestroyMonitor(mMonitor);
}
void
PLDHashTableEnumeratorImpl::ReleaseElements()
{
for (PRInt32 i = 0; i < mCount; i++) {
nsISupports *supports = reinterpret_cast<nsISupports *>
(mElements[i]);
NS_IF_RELEASE(supports);
}
}
NS_IMETHODIMP
PL_NewDHashTableEnumerator(PLDHashTable *table,
EnumeratorConverter converter,
void *converterData,
PLDHashTableEnumeratorImpl **retval)
{
PLDHashTableEnumeratorImpl *impl =
new PLDHashTableEnumeratorImpl(table, converter, converterData);
if (!impl)
return NS_ERROR_OUT_OF_MEMORY;
NS_ADDREF(impl);
if (impl->Count() == -1) {
// conversion failed
NS_RELEASE(impl);
return NS_ERROR_FAILURE;
}
*retval = impl;
return NS_OK;
}
NS_IMETHODIMP
PLDHashTableEnumeratorImpl::First()
{
if (!mCount)
return NS_ERROR_FAILURE;
mCurrent = 0;
return NS_OK;
}
NS_IMETHODIMP
PLDHashTableEnumeratorImpl::Last()
{
if (!mCount)
return NS_ERROR_FAILURE;
mCurrent = mCount - 1;
return NS_OK;
}
NS_IMETHODIMP
PLDHashTableEnumeratorImpl::Prev()
{
if (!mCurrent)
return NS_ERROR_FAILURE;
mCurrent--;
return NS_OK;
}
NS_IMETHODIMP
PLDHashTableEnumeratorImpl::Next()
{
// If empty or we're past the end, or we are at the end return error
if (!mCount || (mCurrent == mCount) || (++mCurrent == mCount))
return NS_ERROR_FAILURE;
return NS_OK;
}
NS_IMETHODIMP
PLDHashTableEnumeratorImpl::CurrentItem(nsISupports **retval)
{
if (!mCount || mCurrent == mCount)
return NS_ERROR_FAILURE;
*retval = reinterpret_cast<nsISupports *>(mElements[mCurrent]);
if (*retval)
NS_ADDREF(*retval);
return NS_OK;
}
NS_IMETHODIMP
PLDHashTableEnumeratorImpl::IsDone()
{
if (!mCount || (mCurrent == mCount))
return NS_OK;
return NS_ENUMERATOR_FALSE;
}
NS_IMETHODIMP
PLDHashTableEnumeratorImpl::HasMoreElements(PRBool *_retval)
{
if (!mCount || (mCurrent >= mCount - 1))
*_retval = PR_FALSE;
else
*_retval = PR_TRUE;
return NS_OK;
}
NS_IMETHODIMP
PLDHashTableEnumeratorImpl::GetNext(nsISupports **_retval)
{
nsresult rv = Next();
if (NS_FAILED(rv)) return rv;
return CurrentItem(_retval);
}
static NS_IMETHODIMP
ConvertFactoryEntryToCID(PLDHashTable *table,
const PLDHashEntryHdr *hdr,
void *data, nsISupports **retval)
{
nsresult rv;
nsCOMPtr<nsISupportsID> wrapper;
nsComponentManagerImpl *cm = static_cast<nsComponentManagerImpl *>(data);
rv = cm->CreateInstanceByContractID(NS_SUPPORTS_ID_CONTRACTID, nsnull,
NS_GET_IID(nsISupportsID), getter_AddRefs(wrapper));
NS_ENSURE_SUCCESS(rv, rv);
const nsFactoryTableEntry *entry =
reinterpret_cast<const nsFactoryTableEntry *>(hdr);
if (entry) {
nsFactoryEntry *fe = entry->mFactoryEntry;
wrapper->SetData(&fe->mCid);
*retval = wrapper;
NS_ADDREF(*retval);
return NS_OK;
}
*retval = nsnull;
return rv;
}
static NS_IMETHODIMP
ConvertContractIDKeyToString(PLDHashTable *table,
const PLDHashEntryHdr *hdr,
void *data, nsISupports **retval)
{
nsresult rv;
nsCOMPtr<nsISupportsCString> wrapper;
nsComponentManagerImpl *cm = static_cast<nsComponentManagerImpl *>(data);
rv = cm->CreateInstanceByContractID(NS_SUPPORTS_CSTRING_CONTRACTID, nsnull,
NS_GET_IID(nsISupportsCString), getter_AddRefs(wrapper));
NS_ENSURE_SUCCESS(rv, rv);
const nsContractIDTableEntry *entry =
reinterpret_cast<const nsContractIDTableEntry *>(hdr);
wrapper->SetData(nsDependentCString(entry->mContractID,
entry->mContractIDLen));
*retval = wrapper;
NS_ADDREF(*retval);
return NS_OK;
}
// this is safe to call during InitXPCOM
static nsresult GetLocationFromDirectoryService(const char* prop,
nsIFile** aDirectory)
{
nsCOMPtr<nsIProperties> directoryService;
nsDirectoryService::Create(nsnull,
NS_GET_IID(nsIProperties),
getter_AddRefs(directoryService));
if (!directoryService)
return NS_ERROR_FAILURE;
return directoryService->Get(prop,
NS_GET_IID(nsIFile),
(void**)aDirectory);
}
////////////////////////////////////////////////////////////////////////////////
// nsComponentManagerImpl
////////////////////////////////////////////////////////////////////////////////
nsComponentManagerImpl::nsComponentManagerImpl()
:
mMon(NULL),
mShuttingDown(NS_SHUTDOWN_NEVERHAPPENED),
mLoaderData(4),
mRegistryDirty(PR_FALSE)
{
mFactories.ops = nsnull;
mContractIDs.ops = nsnull;
}
nsresult nsComponentManagerImpl::Init(nsStaticModuleInfo const *aStaticModules,
PRUint32 aStaticModuleCount)
{
PR_ASSERT(mShuttingDown != NS_SHUTDOWN_INPROGRESS);
if (mShuttingDown == NS_SHUTDOWN_INPROGRESS)
return NS_ERROR_FAILURE;
mShuttingDown = NS_SHUTDOWN_NEVERHAPPENED;
if (nsComponentManagerLog == nsnull)
{
nsComponentManagerLog = PR_NewLogModule("nsComponentManager");
}
// Initialize our arena
PL_INIT_ARENA_POOL(&mArena, "ComponentManagerArena", NS_CM_BLOCK_SIZE);
if (!mFactories.ops) {
if (!PL_DHashTableInit(&mFactories, &factory_DHashTableOps,
0, sizeof(nsFactoryTableEntry),
1024)) {
mFactories.ops = nsnull;
return NS_ERROR_OUT_OF_MEMORY;
}
// Minimum alpha uses k=2 because nsFactoryTableEntry saves two
// words compared to what a chained hash table requires.
PL_DHashTableSetAlphaBounds(&mFactories,
0.875,
PL_DHASH_MIN_ALPHA(&mFactories, 2));
}
if (!mContractIDs.ops) {
if (!PL_DHashTableInit(&mContractIDs, &contractID_DHashTableOps,
0, sizeof(nsContractIDTableEntry),
1024)) {
mContractIDs.ops = nsnull;
return NS_ERROR_OUT_OF_MEMORY;
}
// Minimum alpha uses k=1 because nsContractIDTableEntry saves one
// word compared to what a chained hash table requires.
#if 0
PL_DHashTableSetAlphaBounds(&mContractIDs,
0.875,
PL_DHASH_MIN_ALPHA(&mContractIDs, 1));
#endif
}
if (!mAutoRegEntries.Init(32))
return NS_ERROR_OUT_OF_MEMORY;
if (mMon == nsnull) {
mMon = nsAutoMonitor::NewMonitor("nsComponentManagerImpl");
if (mMon == nsnull)
return NS_ERROR_OUT_OF_MEMORY;
}
GetLocationFromDirectoryService(NS_XPCOM_COMPONENT_DIR, getter_AddRefs(mComponentsDir));
if (!mComponentsDir)
return NS_ERROR_OUT_OF_MEMORY;
nsCAutoString componentDescriptor;
nsresult rv = mComponentsDir->GetNativePath(componentDescriptor);
if (NS_FAILED(rv))
return rv;
mComponentsOffset = componentDescriptor.Length();
GetLocationFromDirectoryService(NS_GRE_COMPONENT_DIR, getter_AddRefs(mGREComponentsDir));
if (mGREComponentsDir) {
nsresult rv = mGREComponentsDir->GetNativePath(componentDescriptor);
if (NS_FAILED(rv)) {
NS_WARNING("No GRE component manager");
return rv;
}
mGREComponentsOffset = componentDescriptor.Length();
}
GetLocationFromDirectoryService(NS_XPCOM_COMPONENT_REGISTRY_FILE,
getter_AddRefs(mRegistryFile));
if(!mRegistryFile) {
NS_WARNING("No Component Registry file was found in the directory service");
return NS_ERROR_FAILURE;
}
PR_LOG(nsComponentManagerLog, PR_LOG_DEBUG,
("nsComponentManager: Initialized."));
rv = mNativeModuleLoader.Init();
if (NS_FAILED(rv))
return rv;
rv = mStaticModuleLoader.Init(aStaticModules, aStaticModuleCount);
if (NS_FAILED(rv))
return rv;
return NS_OK;
}
nsresult nsComponentManagerImpl::Shutdown(void)
{
PR_ASSERT(mShuttingDown == NS_SHUTDOWN_NEVERHAPPENED);
if (mShuttingDown != NS_SHUTDOWN_NEVERHAPPENED)
return NS_ERROR_FAILURE;
mShuttingDown = NS_SHUTDOWN_INPROGRESS;
// Shutdown the component manager
PR_LOG(nsComponentManagerLog, PR_LOG_DEBUG, ("nsComponentManager: Beginning Shutdown."));
// Write out our component data file.
if (mRegistryDirty) {
nsresult rv = WritePersistentRegistry();
if (NS_FAILED(rv)) {
PR_LOG(nsComponentManagerLog, PR_LOG_ERROR, ("nsComponentManager: Could not write out perisistant registry."));
#ifdef DEBUG
printf("Could not write out perisistant registry!\n");
#endif
}
}
mAutoRegEntries.Clear();
// Release all cached factories
if (mContractIDs.ops) {
PL_DHashTableFinish(&mContractIDs);
mContractIDs.ops = nsnull;
}
if (mFactories.ops) {
PL_DHashTableFinish(&mFactories);
mFactories.ops = nsnull;
}
mLoaderData.Clear();
// Free staticm modules
mStaticModuleLoader.ReleaseModules();
// Unload libraries
mNativeModuleLoader.UnloadLibraries();
// delete arena for strings and small objects
PL_FinishArenaPool(&mArena);
mComponentsDir = 0;
mCategoryManager = 0;
mShuttingDown = NS_SHUTDOWN_COMPLETE;
PR_LOG(nsComponentManagerLog, PR_LOG_DEBUG, ("nsComponentManager: Shutdown complete."));
return NS_OK;
}
nsComponentManagerImpl::~nsComponentManagerImpl()
{
PR_LOG(nsComponentManagerLog, PR_LOG_DEBUG, ("nsComponentManager: Beginning destruction."));
if (mShuttingDown != NS_SHUTDOWN_COMPLETE)
Shutdown();
if (mMon) {
nsAutoMonitor::DestroyMonitor(mMon);
}
PR_LOG(nsComponentManagerLog, PR_LOG_DEBUG, ("nsComponentManager: Destroyed."));
}
NS_IMPL_THREADSAFE_ISUPPORTS7(nsComponentManagerImpl,
nsIComponentManager,
nsIServiceManager,
nsISupportsWeakReference,
nsIInterfaceRequestor,
nsIComponentRegistrar,
nsIServiceManagerObsolete,
nsIComponentManagerObsolete)
nsresult
nsComponentManagerImpl::GetInterface(const nsIID & uuid, void **result)
{
NS_WARNING("This isn't supported");
// fall through to QI as anything QIable is a superset of what can be
// got via the GetInterface()
return QueryInterface(uuid, result);
}
////////////////////////////////////////////////////////////////////////////////
// nsComponentManagerImpl: Platform methods
////////////////////////////////////////////////////////////////////////////////
#define PERSISTENT_REGISTRY_VERSION_MINOR 5
#define PERSISTENT_REGISTRY_VERSION_MAJOR 0
static
PRBool ReadSectionHeader(nsManifestLineReader& reader, const char *token)
{
while (1)
{
if (*reader.LinePtr() == '[')
{
char* p = reader.LinePtr() + (reader.LineLength() - 1);
if (*p != ']')
break;
*p = 0;
char* values[1];
int lengths[1];
if (2 != reader.ParseLine(values, lengths, 1))
break;
// ignore the leading '['
if (0 != PL_strcmp(values[0]+1, token))
break;
return PR_TRUE;
}
if (!reader.NextLine())
break;
}
return PR_FALSE;
}
nsresult
nsComponentManagerImpl::ReadPersistentRegistry()
{
NS_ASSERTION(mComponentsDir, "nsComponentManager not initialized.");
nsresult rv;
// populate Category Manager. need to get this early so that we don't get
// skipped by 'goto out'
mCategoryManager = do_GetService(NS_CATEGORYMANAGER_CONTRACTID, &rv);
if (NS_FAILED(rv))
return rv;
nsAutoMonitor mon(mMon);
nsManifestLineReader reader;
PRFileDesc* fd = nsnull;
// Set From Init
if (!mRegistryFile) {
return NS_ERROR_FILE_NOT_FOUND;
}
nsCOMPtr<nsIFile> file;
mRegistryFile->Clone(getter_AddRefs(file));
if (!file)
return NS_ERROR_OUT_OF_MEMORY;
nsCOMPtr<nsILocalFile> localFile(do_QueryInterface(file));
rv = localFile->OpenNSPRFileDesc(PR_RDONLY, 0444, &fd);
if (NS_FAILED(rv))
return rv;
PRInt64 fileSize;
rv = localFile->GetFileSize(&fileSize);
if (NS_FAILED(rv))
{
PR_Close(fd);
return rv;
}
PRInt32 flen = nsInt64(fileSize);
if (flen == 0)
{
PR_Close(fd);
NS_WARNING("Persistent Registry Empty!");
return NS_OK; // ERROR CONDITION
}
char* registry = new char[flen+1];
if (!registry)
goto out;
if (flen > PR_Read(fd, registry, flen))
{
rv = NS_ERROR_FAILURE;
goto out;
}
registry[flen] = '\0';
reader.Init(registry, flen);
if (ReadSectionHeader(reader, "HEADER"))
goto out;
if (!reader.NextLine())
goto out;
char* values[6];
int lengths[6];
// VersionLiteral,major,minor
if (3 != reader.ParseLine(values, lengths, 3))
goto out;
// VersionLiteral
if (!nsDependentCString(values[0], lengths[0]).EqualsLiteral("Version"))
goto out;
// major
if (PERSISTENT_REGISTRY_VERSION_MAJOR != atoi(values[1]))
goto out;
// minor
if (PERSISTENT_REGISTRY_VERSION_MINOR != atoi(values[2]))
goto out;
if (ReadSectionHeader(reader, "COMPONENTS"))
goto out;
while (1)
{
if (!reader.NextLine())
break;
//name,last_modification_date[,optionaldata]
int parts = reader.ParseLine(values, lengths, 3);
if (2 != parts)
break;
PRInt64 a = nsCRT::atoll(values[1]);
nsCOMPtr<nsILocalFile> lf;
rv = FileForRegistryLocation(nsDependentCString(values[0], lengths[0]),
getter_AddRefs(lf));
if (NS_FAILED(rv))
continue;
nsCOMPtr<nsIHashable> lfhash(do_QueryInterface(lf));
if (!lf) {
NS_ERROR("nsLocalFile does not implement nsIHashable");
continue;
}
mAutoRegEntries.Put(lfhash, a);
}
if (ReadSectionHeader(reader, "CLASSIDS"))
goto out;
while (1)
{
if (!reader.NextLine())
break;
// cid,contract_id,type,class_name,inproc_server
if (5 != reader.ParseLine(values, lengths, 5))
break;