janwas
9542ecdd7e
refs #117 stub_impl_hack: defines a function otherwise provided by main.cpp remove old self_test.h contents (e.g. TEST); superceded by cxxtestgen TS_ASSERT etc. only include self_test from a test (otherwise, cxxtest include dir won't be set) cxxtest won't run tests named only "test"; add more descriptive name FIXES uncovered by self tests lib: infinite loop in log2 lockfree: incorrect params This was SVN commit r3979.
181 lines
4.4 KiB
C++
181 lines
4.4 KiB
C++
#include "lib/self_test.h"
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#include "lib/adts.h"
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class TestRingbuf : public CxxTest::TestSuite
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{
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static const size_t N = 49; // RingBuf capacity
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static const int S = 100; // number of test items
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public:
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void test_insert_remove()
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{
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RingBuf<int, N> buf;
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for(int i = 1; i < S; i++)
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{
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buf.push_back(i);
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TS_ASSERT_EQUALS(buf.front(), i);
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buf.pop_front();
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}
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TS_ASSERT(buf.size() == 0 && buf.empty());
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}
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void test_fill_overwrite_old()
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{
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RingBuf<int, N> buf;
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for(int i = 1; i < S; i++)
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buf.push_back(i);
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TS_ASSERT_EQUALS(buf.size(), N);
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int first = buf.front();
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TS_ASSERT_EQUALS(first, (int)(S-1 -N +1));
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for(size_t i = 0; i < N; i++)
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{
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TS_ASSERT_EQUALS(buf.front(), first);
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first++;
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buf.pop_front();
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}
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TS_ASSERT(buf.size() == 0 && buf.empty());
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}
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void test_randomized_insert_remove()
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{
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srand(1);
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RingBuf<int, N> buf;
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std::deque<int> deq;
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for(uint rep = 0; rep < 1000; rep++)
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{
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uint rnd_op = rand(0, 10);
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// 70% - insert
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if(rnd_op >= 3)
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{
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int item = rand();
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buf.push_back(item);
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deq.push_back(item);
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int excess_items = (int)deq.size() - N;
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if(excess_items > 0)
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{
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for(int i = 0; i < excess_items; i++)
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{
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deq.pop_front();
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}
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}
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}
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// 30% - pop front (only if not empty)
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else if(!deq.empty())
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{
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buf.pop_front();
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deq.pop_front();
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}
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}
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TS_ASSERT_EQUALS(buf.size(), deq.size());
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RingBuf<int, N>::iterator begin = buf.begin(), end = buf.end();
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TS_ASSERT(equal(begin, end, deq.begin()));
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}
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};
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class TestCache: public CxxTest::TestSuite
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{
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public:
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void test_cache_perf()
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{
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Cache<int, int, Landlord_Naive> c1;
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Cache<int, int, Landlord_Naive, Divider_Recip> c1r;
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Cache<int, int, Landlord_Cached> c2;
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Cache<int, int, Landlord_Cached, Divider_Recip> c2r;
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Cache<int, int, Landlord_Lazy> c3;
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Cache<int, int, Landlord_Lazy, Divider_Recip> c3r;
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#if defined(ENABLE_CACHE_POLICY_BENCHMARK) || 0
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// set max priority, to reduce interference while measuring.
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int old_policy; static sched_param old_param; // (static => 0-init)
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pthread_getschedparam(pthread_self(), &old_policy, &old_param);
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static sched_param max_param;
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max_param.sched_priority = sched_get_priority_max(SCHED_FIFO);
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pthread_setschedparam(pthread_self(), SCHED_FIFO, &max_param);
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#define MEASURE(c, desc)\
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{\
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srand(1);\
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int cnt = 1;\
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TIMER_BEGIN(desc);\
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for(int i = 0; i < 30000; i++)\
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{\
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/* 70% add (random objects) */\
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bool add = rand(1,10) < 7;\
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if(add)\
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{\
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int key = cnt++;\
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int val = cnt++;\
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size_t size = (size_t)rand(1,100);\
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uint cost = (uint)rand(1,100);\
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c.add(key, val, size, cost);\
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}\
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else\
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{\
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size_t size;\
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int value;\
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c.remove_least_valuable(&value, &size);\
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}\
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}\
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TIMER_END(desc);\
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}
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MEASURE(c1, "naive")
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MEASURE(c1r, "naiverecip")
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MEASURE(c2, "cached")
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MEASURE(c2r, "cachedrecip")
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MEASURE(c3, "lazy")
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MEASURE(c3r, "lazyrecip")
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// restore previous policy and priority.
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pthread_setschedparam(pthread_self(), old_policy, &old_param);
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exit(1134);
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#endif
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}
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// ensures all 3 variants of Landlord<> behave the same
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void test_cache_policies()
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{
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Cache<int, int, Landlord_Naive > c1;
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Cache<int, int, Landlord_Cached> c2;
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Cache<int, int, Landlord_Lazy > c3;
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srand(1);
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int cnt = 1;
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for(int i = 0; i < 1000; i++)
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{
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// 70% add (random objects)
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bool add = rand(1,10) < 7;
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if(add)
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{
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int key = cnt++;
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int val = cnt++;
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size_t size = (size_t)rand(1,100);
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uint cost = (uint)rand(1,100);
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c1.add(key, val, size, cost);
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c2.add(key, val, size, cost);
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c3.add(key, val, size, cost);
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}
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// 30% delete - make sure "least valuable" was same for all
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else
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{
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size_t size1, size2, size3;
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int value1, value2, value3;
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bool removed1, removed2, removed3;
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removed1 = c1.remove_least_valuable(&value1, &size1);
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removed2 = c2.remove_least_valuable(&value2, &size2);
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removed3 = c3.remove_least_valuable(&value3, &size3);
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TS_ASSERT_EQUALS(removed1, removed2);
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TS_ASSERT_EQUALS(removed2, removed3);
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if (removed1)
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{
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TS_ASSERT_EQUALS(size1, size2);
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TS_ASSERT_EQUALS(value1, value2);
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TS_ASSERT_EQUALS(size2, size3);
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TS_ASSERT_EQUALS(value2, value3);
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}
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} // else
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} // for i
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}
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};
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