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-rw-r--r--netwerk/test/unit/test_cache2-30d-pinning-WasEvicted-API.js148
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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.
+
+*/
+
+"use strict";
+
+const kENTRYCOUNT = 10;
+
+function log_(msg) {
+ if (true) {
+ dump(">>>>>>>>>>>>> " + msg + "\n");
+ }
+}
+
+function run_test() {
+ do_get_profile();
+
+ var lci = Services.loadContextInfo.default;
+ var testingInterface = Services.cache2.QueryInterface(Ci.nsICacheTesting);
+ Assert.ok(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();
+ executeSoon(() => {
+ gc();
+ gc();
+ log_("purging");
+
+ // Invokes cacheservice:purge-memory-pools when done.
+ Services.cache2.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)
+
+ Services.obs.addObserver(
+ {
+ observe(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.
+ Services.cache2.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"
+ );
+
+ do_test_pending();
+}