1 // Copyright (c) 2003, Google Inc. 2 // All rights reserved. 3 // 4 // Redistribution and use in source and binary forms, with or without 5 // modification, are permitted provided that the following conditions are 6 // met: 7 // 8 // * Redistributions of source code must retain the above copyright 9 // notice, this list of conditions and the following disclaimer. 10 // * Redistributions in binary form must reproduce the above 11 // copyright notice, this list of conditions and the following disclaimer 12 // in the documentation and/or other materials provided with the 13 // distribution. 14 // * Neither the name of Google Inc. nor the names of its 15 // contributors may be used to endorse or promote products derived from 16 // this software without specific prior written permission. 17 // 18 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 21 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 22 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 23 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 24 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 28 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 30 // --- 31 // Author: Sanjay Ghemawat 32 // 33 // MallocExtension::MarkThreadIdle() testing 34 #include <stdio.h> 35 36 #include "config_for_unittests.h" 37 #include "base/logging.h" 38 #include <gperftools/malloc_extension.h> 39 #include "tests/testutil.h" // for RunThread() 40 41 // Helper routine to do lots of allocations 42 static void TestAllocation() { 43 static const int kNum = 100; 44 void* ptr[kNum]; 45 for (int size = 8; size <= 65536; size*=2) { 46 for (int i = 0; i < kNum; i++) { 47 ptr[i] = malloc(size); 48 } 49 for (int i = 0; i < kNum; i++) { 50 free(ptr[i]); 51 } 52 } 53 } 54 55 // Routine that does a bunch of MarkThreadIdle() calls in sequence 56 // without any intervening allocations 57 static void MultipleIdleCalls() { 58 for (int i = 0; i < 4; i++) { 59 MallocExtension::instance()->MarkThreadIdle(); 60 } 61 } 62 63 // Routine that does a bunch of MarkThreadIdle() calls in sequence 64 // with intervening allocations 65 static void MultipleIdleNonIdlePhases() { 66 for (int i = 0; i < 4; i++) { 67 TestAllocation(); 68 MallocExtension::instance()->MarkThreadIdle(); 69 } 70 } 71 72 // Get current thread cache usage 73 static size_t GetTotalThreadCacheSize() { 74 size_t result; 75 CHECK(MallocExtension::instance()->GetNumericProperty( 76 "tcmalloc.current_total_thread_cache_bytes", 77 &result)); 78 return result; 79 } 80 81 // Check that MarkThreadIdle() actually reduces the amount 82 // of per-thread memory. 83 static void TestIdleUsage() { 84 const size_t original = GetTotalThreadCacheSize(); 85 86 TestAllocation(); 87 const size_t post_allocation = GetTotalThreadCacheSize(); 88 CHECK_GT(post_allocation, original); 89 90 MallocExtension::instance()->MarkThreadIdle(); 91 const size_t post_idle = GetTotalThreadCacheSize(); 92 CHECK_LE(post_idle, original); 93 94 // Log after testing because logging can allocate heap memory. 95 VLOG(0, "Original usage: %"PRIuS"\n", original); 96 VLOG(0, "Post allocation: %"PRIuS"\n", post_allocation); 97 VLOG(0, "Post idle: %"PRIuS"\n", post_idle); 98 } 99 100 int main(int argc, char** argv) { 101 RunThread(&TestIdleUsage); 102 RunThread(&TestAllocation); 103 RunThread(&MultipleIdleCalls); 104 RunThread(&MultipleIdleNonIdlePhases); 105 106 printf("PASS\n"); 107 return 0; 108 } 109
