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64d45d0cb9
MozReview-Commit-ID: EnY0uKD4UD1 --HG-- extra : rebase_source : c968b273a8a05fb211e0fb1e1601ac1b968ca045
111 lines
3.7 KiB
JavaScript
111 lines
3.7 KiB
JavaScript
/*
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This test exercises the CacheFileContextEvictor::WasEvicted API and code using it.
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- We store 10+10 (pinned and non-pinned) entries to the cache, wait for them being written.
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- Then we purge the memory pools.
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- Now the IO thread is suspended on the EVICT (7) level to prevent actual deletion of the files.
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- Index is disabled.
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- We do clear() of the cache, this creates the "ce_*" file and posts to the EVICT level
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the eviction loop mechanics.
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- We open again those 10+10 entries previously stored.
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- IO is resumed
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- We expect to get all the pinned and
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loose all the non-pinned (common) entries.
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*/
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const kENTRYCOUNT = 10;
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function log_(msg) { if (true) dump(">>>>>>>>>>>>> " + msg + "\n"); }
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function run_test()
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{
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do_get_profile();
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var lci = Services.loadContextInfo.default;
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var testingInterface = get_cache_service().QueryInterface(Ci.nsICacheTesting);
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Assert.ok(testingInterface);
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var mc = new MultipleCallbacks(1, function() {
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// (2)
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mc = new MultipleCallbacks(1, finish_cache2_test);
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// Release all references to cache entries so that they can be purged
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// Calling gc() four times is needed to force it to actually release
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// entries that are obviously unreferenced. Yeah, I know, this is wacky...
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gc();
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gc();
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executeSoon(() => {
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gc();
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gc();
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log_("purging");
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// Invokes cacheservice:purge-memory-pools when done.
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get_cache_service().purgeFromMemory(Ci.nsICacheStorageService.PURGE_EVERYTHING); // goes to (3)
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});
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}, true);
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// (1), here we start
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log_("first set of opens");
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var i;
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for (i = 0; i < kENTRYCOUNT; ++i) {
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// Callbacks 1-20
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mc.add();
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asyncOpenCacheEntry("http://pinned" + i + "/", "pin", Ci.nsICacheStorage.OPEN_TRUNCATE, lci,
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new OpenCallback(NEW|WAITFORWRITE, "m" + i, "p" + i, function(entry) { mc.fired(); }));
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mc.add();
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asyncOpenCacheEntry("http://common" + i + "/", "disk", Ci.nsICacheStorage.OPEN_TRUNCATE, lci,
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new OpenCallback(NEW|WAITFORWRITE, "m" + i, "d" + i, function(entry) { mc.fired(); }));
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}
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mc.fired(); // Goes to (2)
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var os = Cc["@mozilla.org/observer-service;1"].getService(Ci.nsIObserverService);
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os.addObserver({
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observe: function(subject, topic, data)
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{
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// (3)
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log_("after purge");
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// Prevent the I/O thread from evicting physically the data. We first want to re-open the entries.
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// This deterministically emulates a slow hard drive.
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testingInterface.suspendCacheIOThread(7);
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log_("clearing");
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// Now clear everything except pinned. Stores the "ce_*" file and schedules background eviction.
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get_cache_service().clear();
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log_("cleared");
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log_("second set of opens");
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// Now open again. Pinned entries should be there, disk entries should be the renewed entries.
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// Callbacks 21-40
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for (i = 0; i < kENTRYCOUNT; ++i) {
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mc.add();
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asyncOpenCacheEntry("http://pinned" + i + "/", "disk", Ci.nsICacheStorage.OPEN_NORMALLY, lci,
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new OpenCallback(NORMAL, "m" + i, "p" + i, function(entry) { mc.fired(); }));
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mc.add();
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asyncOpenCacheEntry("http://common" + i + "/", "disk", Ci.nsICacheStorage.OPEN_NORMALLY, lci,
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new OpenCallback(NEW, "m2" + i, "d2" + i, function(entry) { mc.fired(); }));
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}
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// Resume IO, this will just pop-off the CacheFileContextEvictor::EvictEntries() because of
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// an early check on CacheIOThread::YieldAndRerun() in that method.
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// CacheFileIOManager::OpenFileInternal should now run and CacheFileContextEvictor::WasEvicted
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// should be checked on.
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log_("resuming");
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testingInterface.resumeCacheIOThread();
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log_("resumed");
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mc.fired(); // Finishes this test
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}
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}, "cacheservice:purge-memory-pools");
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do_test_pending();
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}
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