1 // Copyright 2009 Google Inc. All Rights Reserved. 2 // Author: fikes (at) google.com (Andrew Fikes) 3 4 #include "config_for_unittests.h" 5 #include "page_heap.h" 6 #include <stdio.h> 7 #include "base/logging.h" 8 #include "common.h" 9 10 namespace { 11 12 static void CheckStats(const tcmalloc::PageHeap* ph, 13 uint64_t system_pages, 14 uint64_t free_pages, 15 uint64_t unmapped_pages) { 16 tcmalloc::PageHeap::Stats stats = ph->stats(); 17 EXPECT_EQ(system_pages, stats.system_bytes >> kPageShift); 18 EXPECT_EQ(free_pages, stats.free_bytes >> kPageShift); 19 EXPECT_EQ(unmapped_pages, stats.unmapped_bytes >> kPageShift); 20 } 21 22 static void TestPageHeap_Stats() { 23 tcmalloc::PageHeap* ph = new tcmalloc::PageHeap(); 24 25 // Empty page heap 26 CheckStats(ph, 0, 0, 0); 27 28 // Allocate a span 's1' 29 tcmalloc::Span* s1 = ph->New(256); 30 CheckStats(ph, 256, 0, 0); 31 32 // Split span 's1' into 's1', 's2'. Delete 's2' 33 tcmalloc::Span* s2 = ph->Split(s1, 128); 34 Length s2_len = s2->length; 35 ph->Delete(s2); 36 CheckStats(ph, 256, 128, 0); 37 38 // Unmap deleted span 's2' 39 EXPECT_EQ(s2_len, ph->ReleaseAtLeastNPages(1)); 40 CheckStats(ph, 256, 0, 128); 41 42 // Delete span 's1' 43 ph->Delete(s1); 44 CheckStats(ph, 256, 128, 128); 45 46 delete ph; 47 } 48 49 } // namespace 50 51 int main(int argc, char **argv) { 52 TestPageHeap_Stats(); 53 printf("PASS\n"); 54 return 0; 55 } 56
