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      1 /*
      2  * Copyright 2012 Google Inc.
      3  *
      4  * Use of this source code is governed by a BSD-style license that can be
      5  * found in the LICENSE file.
      6  */
      7 
      8 #include "SkAtomics.h"
      9 #include "SkGraphics.h"
     10 #include "SkPaint.h"
     11 #include "SkTLS.h"
     12 #include "SkThreadUtils.h"
     13 #include "Test.h"
     14 
     15 static void thread_main(void*) {
     16     SkGraphics::SetTLSFontCacheLimit(1 * 1024 * 1024);
     17 
     18     const char text[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
     19     size_t len = strlen(text);
     20 
     21     SkPaint paint;
     22 
     23     for (int j = 0; j < 10; ++j) {
     24         for (int i = 9; i <= 48; ++i) {
     25             paint.setTextSize(SkIntToScalar(i));
     26             paint.setAntiAlias(false);
     27             paint.measureText(text, len);
     28             paint.setAntiAlias(true);
     29             paint.measureText(text, len);
     30         }
     31     }
     32 }
     33 
     34 static void test_threads(SkThread::entryPointProc proc) {
     35     SkThread* threads[8];
     36     int N = SK_ARRAY_COUNT(threads);
     37     int i;
     38 
     39     for (i = 0; i < N; ++i) {
     40         threads[i] = new SkThread(proc);
     41     }
     42 
     43     for (i = 0; i < N; ++i) {
     44         threads[i]->start();
     45     }
     46 
     47     for (i = 0; i < N; ++i) {
     48         threads[i]->join();
     49     }
     50 
     51     for (i = 0; i < N; ++i) {
     52         delete threads[i];
     53     }
     54 }
     55 
     56 static int32_t gCounter;
     57 
     58 static void* FakeCreateTLS() {
     59     sk_atomic_inc(&gCounter);
     60     return nullptr;
     61 }
     62 
     63 static void FakeDeleteTLS(void*) {
     64     sk_atomic_dec(&gCounter);
     65 }
     66 
     67 static void testTLSDestructor(void*) {
     68     SkTLS::Get(FakeCreateTLS, FakeDeleteTLS);
     69 }
     70 
     71 DEF_TEST(TLS, reporter) {
     72     // TODO: Disabled for now to work around
     73     // http://code.google.com/p/skia/issues/detail?id=619
     74     // ('flaky segfault in TLS test on Shuttle_Ubuntu12 buildbots')
     75     if( false ) test_threads(&thread_main);
     76 
     77     // Test to ensure that at thread destruction, TLS destructors
     78     // have been called.
     79     test_threads(&testTLSDestructor);
     80     REPORTER_ASSERT(reporter, 0 == gCounter);
     81 }
     82