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Dynamic buffer size limitation

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This commit is contained in:
Pavel Kirienko
2014-02-11 21:26:18 +04:00
parent 031f90f326
commit 5be2801fa1
3 changed files with 42 additions and 31 deletions
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libuavcan/test/transport/transfer_buffer.cpp
+21 -18
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@@ -132,12 +132,13 @@ TEST(DynamicTransferBuffer, Basic)
{
using uavcan::DynamicTransferBuffer;
static const int MAX_SIZE = TEST_BUFFER_SIZE;
static const int POOL_BLOCKS = 8;
uavcan::PoolAllocator<uavcan::MEM_POOL_BLOCK_SIZE * POOL_BLOCKS, uavcan::MEM_POOL_BLOCK_SIZE> pool;
uavcan::PoolManager<2> poolmgr;
poolmgr.addPool(&pool);
DynamicTransferBuffer buf(&poolmgr);
DynamicTransferBuffer buf(&poolmgr, MAX_SIZE);
uint8_t local_buffer[TEST_BUFFER_SIZE * 2];
const uint8_t* const test_data_ptr = reinterpret_cast<const uint8_t*>(TEST_DATA.c_str());
@@ -150,12 +151,9 @@ TEST(DynamicTransferBuffer, Basic)
ASSERT_TRUE(allEqual(local_buffer));
// Bulk write
const int max_size = buf.write(0, test_data_ptr, TEST_DATA.length());
std::cout << "Dynamic buffer contains " << max_size << " bytes" << std::endl;
ASSERT_LE(max_size, TEST_DATA.length());
ASSERT_GT(max_size, 0);
ASSERT_EQ(MAX_SIZE, buf.write(0, test_data_ptr, TEST_DATA.length()));
ASSERT_EQ(0, pool.getNumFreeBlocks()); // Making sure all memory was used up
ASSERT_LT(0, pool.getNumUsedBlocks()); // Making sure some memory was used
ASSERT_TRUE(matchAgainstTestData(buf, 0));
ASSERT_TRUE(matchAgainstTestData(buf, TEST_BUFFER_SIZE));
@@ -213,13 +211,13 @@ static const std::string MGR_TEST_DATA[4] =
"How would you decide which of them was to die? I ask you?"
};
static const int MGR_STATIC_BUFFER_SIZE = 100;
static const int MGR_MAX_BUFFER_SIZE = 100;
TEST(TransferBufferManager, TestDataValidation)
{
for (unsigned int i = 0; i < sizeof(MGR_TEST_DATA) / sizeof(MGR_TEST_DATA[0]); i++)
{
ASSERT_LT(MGR_STATIC_BUFFER_SIZE, MGR_TEST_DATA[i].length());
ASSERT_LT(MGR_MAX_BUFFER_SIZE, MGR_TEST_DATA[i].length());
}
}
@@ -240,7 +238,7 @@ TEST(TransferBufferManager, Basic)
uavcan::PoolManager<1> poolmgr;
poolmgr.addPool(&pool);
typedef TransferBufferManager<MGR_STATIC_BUFFER_SIZE, 2> TransferBufferManagerType;
typedef TransferBufferManager<MGR_MAX_BUFFER_SIZE, 2> TransferBufferManagerType;
std::auto_ptr<TransferBufferManagerType> mgr(new TransferBufferManagerType(&poolmgr));
// Empty
@@ -260,12 +258,12 @@ TEST(TransferBufferManager, Basic)
// Static 0
ASSERT_TRUE((tbb = mgr->create(keys[0])));
ASSERT_EQ(MGR_STATIC_BUFFER_SIZE, fillTestData(MGR_TEST_DATA[0], tbb));
ASSERT_EQ(MGR_MAX_BUFFER_SIZE, fillTestData(MGR_TEST_DATA[0], tbb));
ASSERT_EQ(1, mgr->getNumStaticBuffers());
// Static 1
ASSERT_TRUE((tbb = mgr->create(keys[1])));
ASSERT_EQ(MGR_STATIC_BUFFER_SIZE, fillTestData(MGR_TEST_DATA[1], tbb));
ASSERT_EQ(MGR_MAX_BUFFER_SIZE, fillTestData(MGR_TEST_DATA[1], tbb));
ASSERT_EQ(2, mgr->getNumStaticBuffers());
ASSERT_EQ(0, mgr->getNumDynamicBuffers());
ASSERT_EQ(0, pool.getNumUsedBlocks());
@@ -273,7 +271,7 @@ TEST(TransferBufferManager, Basic)
// Dynamic 0
ASSERT_TRUE((tbb = mgr->create(keys[2])));
ASSERT_EQ(1, pool.getNumUsedBlocks()); // Empty dynamic buffer occupies one block
ASSERT_EQ(MGR_TEST_DATA[2].length(), fillTestData(MGR_TEST_DATA[2], tbb));
ASSERT_EQ(MGR_MAX_BUFFER_SIZE, fillTestData(MGR_TEST_DATA[2], tbb));
ASSERT_EQ(2, mgr->getNumStaticBuffers());
ASSERT_EQ(1, mgr->getNumDynamicBuffers());
ASSERT_LT(1, pool.getNumUsedBlocks());
@@ -282,9 +280,9 @@ TEST(TransferBufferManager, Basic)
// Dynamic 2
ASSERT_TRUE((tbb = mgr->create(keys[3])));
ASSERT_EQ(0, pool.getNumFreeBlocks()); // The test assumes that the memory must be exhausted now
ASSERT_LT(0, pool.getNumUsedBlocks());
ASSERT_EQ(0, fillTestData(MGR_TEST_DATA[3], tbb));
ASSERT_LT(0, fillTestData(MGR_TEST_DATA[3], tbb));
ASSERT_EQ(2, mgr->getNumStaticBuffers());
ASSERT_EQ(2, mgr->getNumDynamicBuffers());
@@ -313,11 +311,11 @@ TEST(TransferBufferManager, Basic)
ASSERT_EQ(1, mgr->getNumDynamicBuffers()); // One migrated to the static
ASSERT_LT(0, pool.getNumFreeBlocks());
// Removing NodeID 0; migration should fail due to oversized data
// Removing NodeID 0; one dynamic must migrate
mgr->remove(keys[0]);
ASSERT_FALSE(mgr->access(keys[0]));
ASSERT_EQ(1, mgr->getNumStaticBuffers());
ASSERT_EQ(1, mgr->getNumDynamicBuffers()); // Migration failed
ASSERT_EQ(2, mgr->getNumStaticBuffers());
ASSERT_EQ(0, mgr->getNumDynamicBuffers());
// At this time we have the following NodeID: 2, 127
ASSERT_TRUE((tbb = mgr->access(keys[2])));
@@ -326,9 +324,14 @@ TEST(TransferBufferManager, Basic)
ASSERT_TRUE((tbb = mgr->access(keys[3])));
ASSERT_TRUE(matchAgainst(MGR_TEST_DATA[3], *tbb));
// These were deleted: 0, 1
// These were deleted: 0, 1; 3 is still there
ASSERT_FALSE(mgr->access(keys[1]));
ASSERT_FALSE(mgr->access(keys[0]));
ASSERT_TRUE(mgr->access(keys[3]));
// Filling the memory again in order to check the destruction below
ASSERT_TRUE((tbb = mgr->create(keys[1])));
ASSERT_LT(0, fillTestData(MGR_TEST_DATA[1], tbb));
// Deleting the object; all memory must be freed
ASSERT_NE(0, pool.getNumUsedBlocks());