MutableBlobReference StorageManager::getBlobInternal(const block_id blob,
const int numa_node) {
MutableBlobReference ret;
{
SpinSharedMutexSharedLock<false> eviction_lock(*lock_manager_.get(blob));
SpinSharedMutexSharedLock<false> read_lock(blocks_shared_mutex_);
std::unordered_map<block_id, BlockHandle>::iterator it = blocks_.find(blob);
if (it != blocks_.end()) {
DEBUG_ASSERT(it->second.block->isBlob());
ret = MutableBlobReference(static_cast<StorageBlob*>(it->second.block), eviction_policy_.get());
}
}
// To be safe, release the blob's shard after 'eviction_lock' destructs.
lock_manager_.release(blob);
if (ret.valid()) {
return ret;
}
do {
SpinSharedMutexExclusiveLock<false> io_lock(*lock_manager_.get(blob));
// Note that there is no way for the block to be evicted between the call to
// loadBlob and the call to EvictionPolicy::blockReferenced from
// MutableBlobReference's constructor; this is because EvictionPolicy
// doesn't know about the blob until blockReferenced is called, so
// chooseBlockToEvict shouldn't return the blob.
{
SpinSharedMutexSharedLock<false> read_lock(blocks_shared_mutex_);
std::unordered_map<block_id, BlockHandle>::iterator it = blocks_.find(blob);
if (it != blocks_.end()) {
DEBUG_ASSERT(it->second.block->isBlob());
ret = MutableBlobReference(static_cast<StorageBlob*>(it->second.block), eviction_policy_.get());
break;
}
}
// No other thread loaded the blob before us.
ret = MutableBlobReference(loadBlob(blob, numa_node), eviction_policy_.get());
} while (false);
// To be safe, release the blob's shard after 'io_lock' destructs.
lock_manager_.release(blob);
return ret;
}
Image::Impl::Impl(const string& path) {
loadBlob(path);
}
uint32_t cpuTest() {
uint32_t pc;
switch(testState++) {
case 0: {
testStart("ADD 1");
cpu->Power();
SetGPR(1, 10);
SetGPR(2, -15);
uint32_t blob_1[] = {0x00201820, 0x00222020, 0x00412820, 0x00423020, 0x0bab6fb8, 0x00000000};
pc = loadBlob(0x80100000, 6, blob_1);
break;
}
case 1: {
testExpectEqual(GetGPR(1), 10);
testExpectEqual(GetGPR(2), -15);
testExpectEqual(GetGPR(3), 10);
testExpectEqual(GetGPR(4), -5);
testExpectEqual(GetGPR(5), -5);
testExpectEqual(GetGPR(6), -30);
testEnd();
testStart("BEQ");
cpu->Power();
SetGPR(1, 1);
SetGPR(2, 2);
SetGPR(3, -1);
SetGPR(4, 4294967295);
uint32_t blob_2[] = {0x10220005, 0x00000000, 0x200a0001, 0x10640004, 0x00000000, 0x200b0001, 0x200a0002, 0x00000000, 0x00000000, 0x0bab6fb8, 0x00000000};
pc = loadBlob(0x80100000, 11, blob_2);
break;
}
case 2: {
testExpectEqual(GetGPR(10), 1);
testExpectEqual(GetGPR(11), 0);
testEnd();
testStart("Branch in branch delay");
cpu->Power();
uint32_t blob_3[] = {0x10000002, 0x10000004, 0x20030001, 0x20010001, 0x10000002, 0x00000000, 0x20020001, 0x00000000, 0x0bab6fb8, 0x00000000};
pc = loadBlob(0x80100000, 10, blob_3);
break;
}
case 3: {
testExpectEqual(GetGPR(1), 1);
testExpectEqual(GetGPR(2), 0);
testExpectEqual(GetGPR(3), 0);
testEnd();
testStart("Load delay for COP");
cpu->Power();
SetGPR(2, 2148597760);
cpu->PokeMem32(2148597760, 3735928559);
uint32_t blob_4[] = {0x8c430000, 0x4803c800, 0x10600004, 0x00000000, 0x20010001, 0x08040009, 0x00000000, 0x20010002, 0x08040009, 0x0bab6fb8, 0x00000000};
pc = loadBlob(0x80100000, 11, blob_4);
break;
}
case 4: {
testExpectEqual(GetGPR(3), 0);
testExpectEqual(GetGPR(1), 1);
testEnd();
testStart("Arithmetic/branching test");
cpu->Power();
SetGPR(2, 57005);
SetGPR(3, 0);
SetGPR(5, 1);
uint32_t blob_5[] = {0x00451023, 0x24630001, 0x1c40fffd, 0x00000000, 0x0bab6fb8, 0x00000000};
pc = loadBlob(0x80100000, 6, blob_5);
break;
}
case 5: {
testExpectEqual(GetGPR(2), 0);
testExpectEqual(GetGPR(3), 57005);
testExpectEqual(GetGPR(5), 1);
testEnd();
testStart("Unaligned loads");
cpu->Power();
cpu->PokeMem32(48864, 3735928559);
SetGPR(30, 48865);
uint32_t blob_6[] = {0x83c10000, 0x93c20000, 0x0bab6fb8, 0x00000000};
pc = loadBlob(0x80100000, 4, blob_6);
break;
}
case 6: {
testExpectEqual(GetGPR(1), -66);
testExpectEqual(GetGPR(2), 190);
testExpectEqual(GetGPR(3), 0);
testExpectEqual(GetGPR(4), 0);
testEnd();
break;
}
}
if(testState == 7) {
if(failedAny)
exit(1);
exit(0);
}
return pc;
}