1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/netwerk/cache2/CacheFileContextEvictor.cpp Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,605 @@
1.4 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.5 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.6 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.7 +
1.8 +#include "CacheLog.h"
1.9 +#include "CacheFileContextEvictor.h"
1.10 +#include "CacheFileIOManager.h"
1.11 +#include "CacheIndex.h"
1.12 +#include "CacheIndexIterator.h"
1.13 +#include "CacheFileUtils.h"
1.14 +#include "nsIFile.h"
1.15 +#include "LoadContextInfo.h"
1.16 +#include "nsThreadUtils.h"
1.17 +#include "nsString.h"
1.18 +#include "nsISimpleEnumerator.h"
1.19 +#include "nsIDirectoryEnumerator.h"
1.20 +#include "mozilla/Base64.h"
1.21 +
1.22 +
1.23 +namespace mozilla {
1.24 +namespace net {
1.25 +
1.26 +const char kContextEvictionPrefix[] = "ce_";
1.27 +const uint32_t kContextEvictionPrefixLength =
1.28 + sizeof(kContextEvictionPrefix) - 1;
1.29 +
1.30 +bool CacheFileContextEvictor::sDiskAlreadySearched = false;
1.31 +
1.32 +CacheFileContextEvictor::CacheFileContextEvictor()
1.33 + : mEvicting(false)
1.34 + , mIndexIsUpToDate(false)
1.35 +{
1.36 + LOG(("CacheFileContextEvictor::CacheFileContextEvictor() [this=%p]", this));
1.37 +}
1.38 +
1.39 +CacheFileContextEvictor::~CacheFileContextEvictor()
1.40 +{
1.41 + LOG(("CacheFileContextEvictor::~CacheFileContextEvictor() [this=%p]", this));
1.42 +}
1.43 +
1.44 +nsresult
1.45 +CacheFileContextEvictor::Init(nsIFile *aCacheDirectory)
1.46 +{
1.47 + LOG(("CacheFileContextEvictor::Init()"));
1.48 +
1.49 + nsresult rv;
1.50 +
1.51 + MOZ_ASSERT(CacheFileIOManager::IsOnIOThread());
1.52 +
1.53 + CacheIndex::IsUpToDate(&mIndexIsUpToDate);
1.54 +
1.55 + mCacheDirectory = aCacheDirectory;
1.56 +
1.57 + rv = aCacheDirectory->Clone(getter_AddRefs(mEntriesDir));
1.58 + if (NS_WARN_IF(NS_FAILED(rv))) {
1.59 + return rv;
1.60 + }
1.61 +
1.62 + rv = mEntriesDir->AppendNative(NS_LITERAL_CSTRING(kEntriesDir));
1.63 + if (NS_WARN_IF(NS_FAILED(rv))) {
1.64 + return rv;
1.65 + }
1.66 +
1.67 + if (!sDiskAlreadySearched) {
1.68 + LoadEvictInfoFromDisk();
1.69 + if ((mEntries.Length() != 0) && mIndexIsUpToDate) {
1.70 + CreateIterators();
1.71 + StartEvicting();
1.72 + }
1.73 + }
1.74 +
1.75 + return NS_OK;
1.76 +}
1.77 +
1.78 +uint32_t
1.79 +CacheFileContextEvictor::ContextsCount()
1.80 +{
1.81 + MOZ_ASSERT(CacheFileIOManager::IsOnIOThread());
1.82 +
1.83 + return mEntries.Length();
1.84 +}
1.85 +
1.86 +nsresult
1.87 +CacheFileContextEvictor::AddContext(nsILoadContextInfo *aLoadContextInfo)
1.88 +{
1.89 + LOG(("CacheFileContextEvictor::AddContext() [this=%p, loadContextInfo=%p]",
1.90 + this, aLoadContextInfo));
1.91 +
1.92 + nsresult rv;
1.93 +
1.94 + MOZ_ASSERT(CacheFileIOManager::IsOnIOThread());
1.95 +
1.96 + CacheFileContextEvictorEntry *entry = nullptr;
1.97 + for (uint32_t i = 0; i < mEntries.Length(); ++i) {
1.98 + if (mEntries[i]->mInfo->Equals(aLoadContextInfo)) {
1.99 + entry = mEntries[i];
1.100 + break;
1.101 + }
1.102 + }
1.103 +
1.104 + if (!entry) {
1.105 + entry = new CacheFileContextEvictorEntry();
1.106 + entry->mInfo = aLoadContextInfo;
1.107 + mEntries.AppendElement(entry);
1.108 + }
1.109 +
1.110 + entry->mTimeStamp = PR_Now() / PR_USEC_PER_MSEC;
1.111 +
1.112 + PersistEvictionInfoToDisk(aLoadContextInfo);
1.113 +
1.114 + if (mIndexIsUpToDate) {
1.115 + // Already existing context could be added again, in this case the iterator
1.116 + // would be recreated. Close the old iterator explicitely.
1.117 + if (entry->mIterator) {
1.118 + entry->mIterator->Close();
1.119 + entry->mIterator = nullptr;
1.120 + }
1.121 +
1.122 + rv = CacheIndex::GetIterator(aLoadContextInfo, false,
1.123 + getter_AddRefs(entry->mIterator));
1.124 + if (NS_FAILED(rv)) {
1.125 + // This could probably happen during shutdown. Remove the entry from
1.126 + // the array, but leave the info on the disk. No entry can be opened
1.127 + // during shutdown and we'll load the eviction info on next start.
1.128 + LOG(("CacheFileContextEvictor::AddContext() - Cannot get an iterator. "
1.129 + "[rv=0x%08x]", rv));
1.130 + mEntries.RemoveElement(entry);
1.131 + return rv;
1.132 + }
1.133 +
1.134 + StartEvicting();
1.135 + }
1.136 +
1.137 + return NS_OK;
1.138 +}
1.139 +
1.140 +nsresult
1.141 +CacheFileContextEvictor::CacheIndexStateChanged()
1.142 +{
1.143 + LOG(("CacheFileContextEvictor::CacheIndexStateChanged() [this=%p]", this));
1.144 +
1.145 + MOZ_ASSERT(CacheFileIOManager::IsOnIOThread());
1.146 +
1.147 + bool isUpToDate = false;
1.148 + CacheIndex::IsUpToDate(&isUpToDate);
1.149 + if (mEntries.Length() == 0) {
1.150 + // Just save the state and exit, since there is nothing to do
1.151 + mIndexIsUpToDate = isUpToDate;
1.152 + return NS_OK;
1.153 + }
1.154 +
1.155 + if (!isUpToDate && !mIndexIsUpToDate) {
1.156 + // Index is outdated and status has not changed, nothing to do.
1.157 + return NS_OK;
1.158 + }
1.159 +
1.160 + if (isUpToDate && mIndexIsUpToDate) {
1.161 + // Status has not changed, but make sure the eviction is running.
1.162 + if (mEvicting) {
1.163 + return NS_OK;
1.164 + }
1.165 +
1.166 + // We're not evicting, but we should be evicting?!
1.167 + LOG(("CacheFileContextEvictor::CacheIndexStateChanged() - Index is up to "
1.168 + "date, we have some context to evict but eviction is not running! "
1.169 + "Starting now."));
1.170 + }
1.171 +
1.172 + mIndexIsUpToDate = isUpToDate;
1.173 +
1.174 + if (mIndexIsUpToDate) {
1.175 + CreateIterators();
1.176 + StartEvicting();
1.177 + } else {
1.178 + CloseIterators();
1.179 + }
1.180 +
1.181 + return NS_OK;
1.182 +}
1.183 +
1.184 +nsresult
1.185 +CacheFileContextEvictor::WasEvicted(const nsACString &aKey, nsIFile *aFile,
1.186 + bool *_retval)
1.187 +{
1.188 + LOG(("CacheFileContextEvictor::WasEvicted() [key=%s]",
1.189 + PromiseFlatCString(aKey).get()));
1.190 +
1.191 + nsresult rv;
1.192 +
1.193 + MOZ_ASSERT(CacheFileIOManager::IsOnIOThread());
1.194 +
1.195 + nsCOMPtr<nsILoadContextInfo> info = CacheFileUtils::ParseKey(aKey);
1.196 + MOZ_ASSERT(info);
1.197 + if (!info) {
1.198 + LOG(("CacheFileContextEvictor::WasEvicted() - Cannot parse key!"));
1.199 + *_retval = false;
1.200 + return NS_OK;
1.201 + }
1.202 +
1.203 + CacheFileContextEvictorEntry *entry = nullptr;
1.204 + for (uint32_t i = 0; i < mEntries.Length(); ++i) {
1.205 + if (info->Equals(mEntries[i]->mInfo)) {
1.206 + entry = mEntries[i];
1.207 + break;
1.208 + }
1.209 + }
1.210 +
1.211 + if (!entry) {
1.212 + LOG(("CacheFileContextEvictor::WasEvicted() - Didn't find equal context, "
1.213 + "returning false."));
1.214 + *_retval = false;
1.215 + return NS_OK;
1.216 + }
1.217 +
1.218 + PRTime lastModifiedTime;
1.219 + rv = aFile->GetLastModifiedTime(&lastModifiedTime);
1.220 + if (NS_FAILED(rv)) {
1.221 + LOG(("CacheFileContextEvictor::WasEvicted() - Cannot get last modified time"
1.222 + ", returning false."));
1.223 + *_retval = false;
1.224 + return NS_OK;
1.225 + }
1.226 +
1.227 + *_retval = !(lastModifiedTime > entry->mTimeStamp);
1.228 + LOG(("CacheFileContextEvictor::WasEvicted() - returning %s. [mTimeStamp=%lld,"
1.229 + " lastModifiedTime=%lld]", *_retval ? "true" : "false",
1.230 + mEntries[0]->mTimeStamp, lastModifiedTime));
1.231 +
1.232 + return NS_OK;
1.233 +}
1.234 +
1.235 +nsresult
1.236 +CacheFileContextEvictor::PersistEvictionInfoToDisk(
1.237 + nsILoadContextInfo *aLoadContextInfo)
1.238 +{
1.239 + LOG(("CacheFileContextEvictor::PersistEvictionInfoToDisk() [this=%p, "
1.240 + "loadContextInfo=%p]", this, aLoadContextInfo));
1.241 +
1.242 + nsresult rv;
1.243 +
1.244 + MOZ_ASSERT(CacheFileIOManager::IsOnIOThread());
1.245 +
1.246 + nsCOMPtr<nsIFile> file;
1.247 + rv = GetContextFile(aLoadContextInfo, getter_AddRefs(file));
1.248 + if (NS_WARN_IF(NS_FAILED(rv))) {
1.249 + return rv;
1.250 + }
1.251 +
1.252 +#ifdef PR_LOGGING
1.253 + nsAutoCString path;
1.254 + file->GetNativePath(path);
1.255 +#endif
1.256 +
1.257 + PRFileDesc *fd;
1.258 + rv = file->OpenNSPRFileDesc(PR_RDWR | PR_CREATE_FILE | PR_TRUNCATE, 0600,
1.259 + &fd);
1.260 + if (NS_WARN_IF(NS_FAILED(rv))) {
1.261 + LOG(("CacheFileContextEvictor::PersistEvictionInfoToDisk() - Creating file "
1.262 + "failed! [path=%s, rv=0x%08x]", path.get(), rv));
1.263 + return rv;
1.264 + }
1.265 +
1.266 + PR_Close(fd);
1.267 +
1.268 + LOG(("CacheFileContextEvictor::PersistEvictionInfoToDisk() - Successfully "
1.269 + "created file. [path=%s]", path.get()));
1.270 +
1.271 + return NS_OK;
1.272 +}
1.273 +
1.274 +nsresult
1.275 +CacheFileContextEvictor::RemoveEvictInfoFromDisk(
1.276 + nsILoadContextInfo *aLoadContextInfo)
1.277 +{
1.278 + LOG(("CacheFileContextEvictor::RemoveEvictInfoFromDisk() [this=%p, "
1.279 + "loadContextInfo=%p]", this, aLoadContextInfo));
1.280 +
1.281 + nsresult rv;
1.282 +
1.283 + MOZ_ASSERT(CacheFileIOManager::IsOnIOThread());
1.284 +
1.285 + nsCOMPtr<nsIFile> file;
1.286 + rv = GetContextFile(aLoadContextInfo, getter_AddRefs(file));
1.287 + if (NS_WARN_IF(NS_FAILED(rv))) {
1.288 + return rv;
1.289 + }
1.290 +
1.291 +#ifdef PR_LOGGING
1.292 + nsAutoCString path;
1.293 + file->GetNativePath(path);
1.294 +#endif
1.295 +
1.296 + rv = file->Remove(false);
1.297 + if (NS_WARN_IF(NS_FAILED(rv))) {
1.298 + LOG(("CacheFileContextEvictor::RemoveEvictionInfoFromDisk() - Removing file"
1.299 + " failed! [path=%s, rv=0x%08x]", path.get(), rv));
1.300 + return rv;
1.301 + }
1.302 +
1.303 + LOG(("CacheFileContextEvictor::RemoveEvictionInfoFromDisk() - Successfully "
1.304 + "removed file. [path=%s]", path.get()));
1.305 +
1.306 + return NS_OK;
1.307 +}
1.308 +
1.309 +nsresult
1.310 +CacheFileContextEvictor::LoadEvictInfoFromDisk()
1.311 +{
1.312 + LOG(("CacheFileContextEvictor::LoadEvictInfoFromDisk() [this=%p]", this));
1.313 +
1.314 + nsresult rv;
1.315 +
1.316 + MOZ_ASSERT(CacheFileIOManager::IsOnIOThread());
1.317 +
1.318 + sDiskAlreadySearched = true;
1.319 +
1.320 + nsCOMPtr<nsISimpleEnumerator> enumerator;
1.321 + rv = mCacheDirectory->GetDirectoryEntries(getter_AddRefs(enumerator));
1.322 + if (NS_WARN_IF(NS_FAILED(rv))) {
1.323 + return rv;
1.324 + }
1.325 +
1.326 + nsCOMPtr<nsIDirectoryEnumerator> dirEnum = do_QueryInterface(enumerator, &rv);
1.327 + if (NS_WARN_IF(NS_FAILED(rv))) {
1.328 + return rv;
1.329 + }
1.330 +
1.331 + while (true) {
1.332 + nsCOMPtr<nsIFile> file;
1.333 + rv = dirEnum->GetNextFile(getter_AddRefs(file));
1.334 + if (!file) {
1.335 + break;
1.336 + }
1.337 +
1.338 + bool isDir = false;
1.339 + file->IsDirectory(&isDir);
1.340 + if (isDir) {
1.341 + continue;
1.342 + }
1.343 +
1.344 + nsAutoCString leaf;
1.345 + rv = file->GetNativeLeafName(leaf);
1.346 + if (NS_FAILED(rv)) {
1.347 + LOG(("CacheFileContextEvictor::LoadEvictInfoFromDisk() - "
1.348 + "GetNativeLeafName() failed! Skipping file."));
1.349 + continue;
1.350 + }
1.351 +
1.352 + if (leaf.Length() < kContextEvictionPrefixLength) {
1.353 + continue;
1.354 + }
1.355 +
1.356 + if (!StringBeginsWith(leaf, NS_LITERAL_CSTRING(kContextEvictionPrefix))) {
1.357 + continue;
1.358 + }
1.359 +
1.360 + nsAutoCString encoded;
1.361 + encoded = Substring(leaf, kContextEvictionPrefixLength);
1.362 + encoded.ReplaceChar('-', '/');
1.363 +
1.364 + nsAutoCString decoded;
1.365 + rv = Base64Decode(encoded, decoded);
1.366 + if (NS_FAILED(rv)) {
1.367 + LOG(("CacheFileContextEvictor::LoadEvictInfoFromDisk() - Base64 decoding "
1.368 + "failed. Removing the file. [file=%s]", leaf.get()));
1.369 + file->Remove(false);
1.370 + continue;
1.371 + }
1.372 +
1.373 + nsCOMPtr<nsILoadContextInfo> info = CacheFileUtils::ParseKey(decoded);
1.374 +
1.375 + if (!info) {
1.376 + LOG(("CacheFileContextEvictor::LoadEvictInfoFromDisk() - Cannot parse "
1.377 + "context key, removing file. [contextKey=%s, file=%s]",
1.378 + decoded.get(), leaf.get()));
1.379 + file->Remove(false);
1.380 + continue;
1.381 + }
1.382 +
1.383 + PRTime lastModifiedTime;
1.384 + rv = file->GetLastModifiedTime(&lastModifiedTime);
1.385 + if (NS_FAILED(rv)) {
1.386 + continue;
1.387 + }
1.388 +
1.389 + CacheFileContextEvictorEntry *entry = new CacheFileContextEvictorEntry();
1.390 + entry->mInfo = info;
1.391 + entry->mTimeStamp = lastModifiedTime;
1.392 + mEntries.AppendElement(entry);
1.393 + }
1.394 +
1.395 + return NS_OK;
1.396 +}
1.397 +
1.398 +nsresult
1.399 +CacheFileContextEvictor::GetContextFile(nsILoadContextInfo *aLoadContextInfo,
1.400 + nsIFile **_retval)
1.401 +{
1.402 + nsresult rv;
1.403 +
1.404 + nsAutoCString leafName;
1.405 + leafName.Assign(NS_LITERAL_CSTRING(kContextEvictionPrefix));
1.406 +
1.407 + nsAutoCString keyPrefix;
1.408 + CacheFileUtils::AppendKeyPrefix(aLoadContextInfo, keyPrefix);
1.409 +
1.410 + // TODO: This hack is needed because current CacheFileUtils::ParseKey() can
1.411 + // parse only the whole key and not just the key prefix generated by
1.412 + // CacheFileUtils::CreateKeyPrefix(). This should be removed once bug #968593
1.413 + // is fixed.
1.414 + keyPrefix.Append(":foo");
1.415 +
1.416 + nsAutoCString data64;
1.417 + rv = Base64Encode(keyPrefix, data64);
1.418 + if (NS_WARN_IF(NS_FAILED(rv))) {
1.419 + return rv;
1.420 + }
1.421 +
1.422 + // Replace '/' with '-' since '/' cannot be part of the filename.
1.423 + data64.ReplaceChar('/', '-');
1.424 +
1.425 + leafName.Append(data64);
1.426 +
1.427 + nsCOMPtr<nsIFile> file;
1.428 + rv = mCacheDirectory->Clone(getter_AddRefs(file));
1.429 + if (NS_WARN_IF(NS_FAILED(rv))) {
1.430 + return rv;
1.431 + }
1.432 +
1.433 + rv = file->AppendNative(leafName);
1.434 + if (NS_WARN_IF(NS_FAILED(rv))) {
1.435 + return rv;
1.436 + }
1.437 +
1.438 + file.swap(*_retval);
1.439 + return NS_OK;
1.440 +}
1.441 +
1.442 +void
1.443 +CacheFileContextEvictor::CreateIterators()
1.444 +{
1.445 + LOG(("CacheFileContextEvictor::CreateIterators() [this=%p]", this));
1.446 +
1.447 + CloseIterators();
1.448 +
1.449 + nsresult rv;
1.450 +
1.451 + for (uint32_t i = 0; i < mEntries.Length(); ) {
1.452 + rv = CacheIndex::GetIterator(mEntries[i]->mInfo, false,
1.453 + getter_AddRefs(mEntries[i]->mIterator));
1.454 + if (NS_FAILED(rv)) {
1.455 + LOG(("CacheFileContextEvictor::CreateIterators() - Cannot get an iterator"
1.456 + ". [rv=0x%08x]", rv));
1.457 + mEntries.RemoveElementAt(i);
1.458 + continue;
1.459 + }
1.460 +
1.461 + ++i;
1.462 + }
1.463 +}
1.464 +
1.465 +void
1.466 +CacheFileContextEvictor::CloseIterators()
1.467 +{
1.468 + LOG(("CacheFileContextEvictor::CloseIterators() [this=%p]", this));
1.469 +
1.470 + for (uint32_t i = 0; i < mEntries.Length(); ++i) {
1.471 + if (mEntries[i]->mIterator) {
1.472 + mEntries[i]->mIterator->Close();
1.473 + mEntries[i]->mIterator = nullptr;
1.474 + }
1.475 + }
1.476 +}
1.477 +
1.478 +void
1.479 +CacheFileContextEvictor::StartEvicting()
1.480 +{
1.481 + LOG(("CacheFileContextEvictor::StartEvicting() [this=%p]", this));
1.482 +
1.483 + MOZ_ASSERT(CacheFileIOManager::IsOnIOThread());
1.484 +
1.485 + if (mEvicting) {
1.486 + LOG(("CacheFileContextEvictor::StartEvicting() - already evicintg."));
1.487 + return;
1.488 + }
1.489 +
1.490 + if (mEntries.Length() == 0) {
1.491 + LOG(("CacheFileContextEvictor::StartEvicting() - no context to evict."));
1.492 + return;
1.493 + }
1.494 +
1.495 + nsCOMPtr<nsIRunnable> ev;
1.496 + ev = NS_NewRunnableMethod(this, &CacheFileContextEvictor::EvictEntries);
1.497 +
1.498 + nsRefPtr<CacheIOThread> ioThread = CacheFileIOManager::IOThread();
1.499 +
1.500 + nsresult rv = ioThread->Dispatch(ev, CacheIOThread::EVICT);
1.501 + if (NS_FAILED(rv)) {
1.502 + LOG(("CacheFileContextEvictor::StartEvicting() - Cannot dispatch event to "
1.503 + "IO thread. [rv=0x%08x]", rv));
1.504 + }
1.505 +
1.506 + mEvicting = true;
1.507 +}
1.508 +
1.509 +nsresult
1.510 +CacheFileContextEvictor::EvictEntries()
1.511 +{
1.512 + LOG(("CacheFileContextEvictor::EvictEntries()"));
1.513 +
1.514 + nsresult rv;
1.515 +
1.516 + MOZ_ASSERT(CacheFileIOManager::IsOnIOThread());
1.517 +
1.518 + mEvicting = false;
1.519 +
1.520 + if (!mIndexIsUpToDate) {
1.521 + LOG(("CacheFileContextEvictor::EvictEntries() - Stopping evicting due to "
1.522 + "outdated index."));
1.523 + return NS_OK;
1.524 + }
1.525 +
1.526 + while (true) {
1.527 + if (CacheIOThread::YieldAndRerun()) {
1.528 + LOG(("CacheFileContextEvictor::EvictEntries() - Breaking loop for higher "
1.529 + "level events."));
1.530 + mEvicting = true;
1.531 + return NS_OK;
1.532 + }
1.533 +
1.534 + if (mEntries.Length() == 0) {
1.535 + LOG(("CacheFileContextEvictor::EvictEntries() - Stopping evicting, there "
1.536 + "is no context to evict."));
1.537 + return NS_OK;
1.538 + }
1.539 +
1.540 + SHA1Sum::Hash hash;
1.541 + rv = mEntries[0]->mIterator->GetNextHash(&hash);
1.542 + if (rv == NS_ERROR_NOT_AVAILABLE) {
1.543 + LOG(("CacheFileContextEvictor::EvictEntries() - No more entries left in "
1.544 + "iterator. [iterator=%p, info=%p]", mEntries[0]->mIterator.get(),
1.545 + mEntries[0]->mInfo.get()));
1.546 + RemoveEvictInfoFromDisk(mEntries[0]->mInfo);
1.547 + mEntries.RemoveElementAt(0);
1.548 + continue;
1.549 + } else if (NS_FAILED(rv)) {
1.550 + LOG(("CacheFileContextEvictor::EvictEntries() - Iterator failed to "
1.551 + "provide next hash (shutdown?), keeping eviction info on disk."
1.552 + " [iterator=%p, info=%p]", mEntries[0]->mIterator.get(),
1.553 + mEntries[0]->mInfo.get()));
1.554 + mEntries.RemoveElementAt(0);
1.555 + continue;
1.556 + }
1.557 +
1.558 + LOG(("CacheFileContextEvictor::EvictEntries() - Processing hash. "
1.559 + "[hash=%08x%08x%08x%08x%08x, iterator=%p, info=%p]", LOGSHA1(&hash),
1.560 + mEntries[0]->mIterator.get(), mEntries[0]->mInfo.get()));
1.561 +
1.562 + nsRefPtr<CacheFileHandle> handle;
1.563 + CacheFileIOManager::gInstance->mHandles.GetHandle(&hash, false,
1.564 + getter_AddRefs(handle));
1.565 + if (handle) {
1.566 + // We doom any active handle in CacheFileIOManager::EvictByContext(), so
1.567 + // this must be a new one. Skip it.
1.568 + LOG(("CacheFileContextEvictor::EvictEntries() - Skipping entry since we "
1.569 + "found an active handle. [handle=%p]", handle.get()));
1.570 + continue;
1.571 + }
1.572 +
1.573 + nsAutoCString leafName;
1.574 + CacheFileIOManager::HashToStr(&hash, leafName);
1.575 +
1.576 + PRTime lastModifiedTime;
1.577 + nsCOMPtr<nsIFile> file;
1.578 + rv = mEntriesDir->Clone(getter_AddRefs(file));
1.579 + if (NS_SUCCEEDED(rv)) {
1.580 + rv = file->AppendNative(leafName);
1.581 + }
1.582 + if (NS_SUCCEEDED(rv)) {
1.583 + rv = file->GetLastModifiedTime(&lastModifiedTime);
1.584 + }
1.585 + if (NS_FAILED(rv)) {
1.586 + LOG(("CacheFileContextEvictor::EvictEntries() - Cannot get last modified "
1.587 + "time, skipping entry."));
1.588 + continue;
1.589 + }
1.590 +
1.591 + if (lastModifiedTime > mEntries[0]->mTimeStamp) {
1.592 + LOG(("CacheFileContextEvictor::EvictEntries() - Skipping newer entry. "
1.593 + "[mTimeStamp=%lld, lastModifiedTime=%lld]", mEntries[0]->mTimeStamp,
1.594 + lastModifiedTime));
1.595 + continue;
1.596 + }
1.597 +
1.598 + LOG(("CacheFileContextEvictor::EvictEntries - Removing entry."));
1.599 + file->Remove(false);
1.600 + CacheIndex::RemoveEntry(&hash);
1.601 + }
1.602 +
1.603 + NS_NOTREACHED("We should never get here");
1.604 + return NS_OK;
1.605 +}
1.606 +
1.607 +} // net
1.608 +} // mozilla
