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authorMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
committerMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
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Add m-esr52 at 52.6.0
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+/*
+
+This test exercises the CacheFileContextEvictor::WasEvicted API and code using it.
+
+- We store 10+10 (pinned and non-pinned) entries to the cache, wait for them being written.
+- Then we purge the memory pools.
+- Now the IO thread is suspended on the EVICT (7) level to prevent actual deletion of the files.
+- Index is disabled.
+- We do clear() of the cache, this creates the "ce_*" file and posts to the EVICT level
+ the eviction loop mechanics.
+- We open again those 10+10 entries previously stored.
+- IO is resumed
+- We expect to get all the pinned and
+ loose all the non-pinned (common) entries.
+
+*/
+
+const kENTRYCOUNT = 10;
+
+function log_(msg) { if (true) dump(">>>>>>>>>>>>> " + msg + "\n"); }
+
+function run_test()
+{
+ do_get_profile();
+ if (!newCacheBackEndUsed()) {
+ do_check_true(true, "This test checks only cache2 specific behavior.");
+ return;
+ }
+ var lci = LoadContextInfo.default;
+ var testingInterface = get_cache_service().QueryInterface(Ci.nsICacheTesting);
+ do_check_true(testingInterface);
+
+ var mc = new MultipleCallbacks(1, function() {
+ // (2)
+
+ mc = new MultipleCallbacks(1, finish_cache2_test);
+ // Release all references to cache entries so that they can be purged
+ // Calling gc() four times is needed to force it to actually release
+ // entries that are obviously unreferenced. Yeah, I know, this is wacky...
+ gc();
+ gc();
+ do_execute_soon(() => {
+ gc();
+ gc();
+ log_("purging");
+
+ // Invokes cacheservice:purge-memory-pools when done.
+ get_cache_service().purgeFromMemory(Ci.nsICacheStorageService.PURGE_EVERYTHING); // goes to (3)
+ });
+ }, true);
+
+ // (1), here we start
+
+ log_("first set of opens");
+ var i;
+ for (i = 0; i < kENTRYCOUNT; ++i) {
+
+ // Callbacks 1-20
+ mc.add();
+ asyncOpenCacheEntry("http://pinned" + i + "/", "pin", Ci.nsICacheStorage.OPEN_TRUNCATE, lci,
+ new OpenCallback(NEW|WAITFORWRITE, "m" + i, "p" + i, function(entry) { mc.fired(); }));
+
+ mc.add();
+ asyncOpenCacheEntry("http://common" + i + "/", "disk", Ci.nsICacheStorage.OPEN_TRUNCATE, lci,
+ new OpenCallback(NEW|WAITFORWRITE, "m" + i, "d" + i, function(entry) { mc.fired(); }));
+ }
+
+ mc.fired(); // Goes to (2)
+
+ var os = Cc["@mozilla.org/observer-service;1"].getService(Ci.nsIObserverService);
+ os.addObserver({
+ observe: function(subject, topic, data)
+ {
+ // (3)
+
+ log_("after purge");
+ // Prevent the I/O thread from evicting physically the data. We first want to re-open the entries.
+ // This deterministically emulates a slow hard drive.
+ testingInterface.suspendCacheIOThread(7);
+
+ log_("clearing");
+ // Now clear everything except pinned. Stores the "ce_*" file and schedules background eviction.
+ get_cache_service().clear();
+ log_("cleared");
+
+ log_("second set of opens");
+ // Now open again. Pinned entries should be there, disk entries should be the renewed entries.
+ // Callbacks 21-40
+ for (i = 0; i < kENTRYCOUNT; ++i) {
+ mc.add();
+ asyncOpenCacheEntry("http://pinned" + i + "/", "disk", Ci.nsICacheStorage.OPEN_NORMALLY, lci,
+ new OpenCallback(NORMAL, "m" + i, "p" + i, function(entry) { mc.fired(); }));
+
+ mc.add();
+ asyncOpenCacheEntry("http://common" + i + "/", "disk", Ci.nsICacheStorage.OPEN_NORMALLY, lci,
+ new OpenCallback(NEW, "m2" + i, "d2" + i, function(entry) { mc.fired(); }));
+ }
+
+ // Resume IO, this will just pop-off the CacheFileContextEvictor::EvictEntries() because of
+ // an early check on CacheIOThread::YieldAndRerun() in that method.
+ // CacheFileIOManager::OpenFileInternal should now run and CacheFileContextEvictor::WasEvicted
+ // should be checked on.
+ log_("resuming");
+ testingInterface.resumeCacheIOThread();
+ log_("resumed");
+
+ mc.fired(); // Finishes this test
+ }
+ }, "cacheservice:purge-memory-pools", false);
+
+
+ do_test_pending();
+}