int32_t
GCConfigTest::allocateHelper(omrobjectptr_t *obj, char *objName, uintptr_t size)
{
OMRPORT_ACCESS_FROM_OMRPORT(gcTestEnv->portLib);
int32_t rt = 0;
uintptr_t actualSize = 0;
MM_ObjectAllocationInterface *allocationInterface = env->_objectAllocationInterface;
MM_GCExtensionsBase *extensions = env->getExtensions();
uintptr_t allocatedFlags = 0;
uintptr_t sizeAdjusted = extensions->objectModel.adjustSizeInBytes(size);
MM_AllocateDescription mm_allocdescription(sizeAdjusted, allocatedFlags, true, true);
*obj = (omrobjectptr_t)allocationInterface->allocateObject(env, &mm_allocdescription, env->getMemorySpace(), false);
if (NULL == *obj) {
omrtty_printf("No free memory to allocate %s, GC start.\n", objName);
*obj = (omrobjectptr_t)allocationInterface->allocateObject(env, &mm_allocdescription, env->getMemorySpace(), true);
env->unwindExclusiveVMAccessForGC();
if (NULL == *obj) {
rt = 1;
omrtty_printf("%s:%d No free memory after a GC. Failed to allocate object %s.\n", __FILE__, __LINE__, objName);
goto done;
}
verboseManager->getWriterChain()->endOfCycle(env);
}
actualSize = mm_allocdescription.getBytesRequested();
if (NULL != *obj) {
memset(*obj, 0, actualSize);
}
/* set size in header */
extensions->objectModel.setObjectSize(*obj, actualSize);
#if defined(OMRGCTEST_DEBUG)
omrtty_printf("Allocate object name: %s; size: %dB; objPtr: %llu\n", objName, actualSize, *obj);
#endif
done:
return rt;
}
ObjectEntry *
GCConfigTest::allocateHelper(const char *objName, uintptr_t size)
{
OMRPORT_ACCESS_FROM_OMRPORT(gcTestEnv->portLib);
MM_ObjectAllocationInterface *allocationInterface = env->_objectAllocationInterface;
MM_GCExtensionsBase *extensions = env->getExtensions();
uintptr_t allocatedFlags = 0;
uintptr_t sizeAdjusted = extensions->objectModel.adjustSizeInBytes(size);
MM_AllocateDescription mm_allocdescription(sizeAdjusted, allocatedFlags, true, true);
ObjectEntry objEntry;
objEntry.name = objName;
objEntry.objPtr = (omrobjectptr_t)allocationInterface->allocateObject(env, &mm_allocdescription, env->getMemorySpace(), false);
objEntry.numOfRef = 0;
ObjectEntry *hashedEntry = NULL;
if (NULL == objEntry.objPtr) {
omrtty_printf("No free memory to allocate %s of size 0x%llx, GC start.\n", objName, size);
objEntry.objPtr = (omrobjectptr_t)allocationInterface->allocateObject(env, &mm_allocdescription, env->getMemorySpace(), true);
env->unwindExclusiveVMAccessForGC();
if (NULL == objEntry.objPtr) {
omrtty_printf("%s:%d No free memory after a GC. Failed to allocate object %s of size 0x%llx.\n", __FILE__, __LINE__, objName, size);
goto done;
}
verboseManager->getWriterChain()->endOfCycle(env);
}
if (NULL != objEntry.objPtr) {
/* set size in header */
uintptr_t actualSize = mm_allocdescription.getBytesRequested();
memset(objEntry.objPtr, 0, actualSize);
extensions->objectModel.setObjectSize(objEntry.objPtr, actualSize);
#if defined(OMRGCTEST_DEBUG)
omrtty_printf("Allocate object name: %s(%p[0x%llx])\n", objEntry.name, objEntry.objPtr, actualSize);
#endif
hashedEntry = add(&objEntry);
}
done:
return hashedEntry;
}
int
testMain(int argc, char ** argv, char **envp)
{
/* Start up */
OMR_VM_Example exampleVM;
OMR_VMThread *omrVMThread = NULL;
omrthread_t self = NULL;
exampleVM._omrVM = NULL;
exampleVM.rootTable = NULL;
/* Initialize the VM */
omr_error_t rc = OMR_Initialize(&exampleVM, &exampleVM._omrVM);
Assert_MM_true(OMR_ERROR_NONE == rc);
/* Recursive omrthread_attach() (i.e. re-attaching a thread that is already attached) is cheaper and less fragile
* than non-recursive. If performing a sequence of function calls that are likely to attach & detach internally,
* it is more efficient to call omrthread_attach() before the entire block.
*/
int j9rc = (int) omrthread_attach_ex(&self, J9THREAD_ATTR_DEFAULT);
Assert_MM_true(0 == j9rc);
/* Initialize root table */
exampleVM.rootTable = hashTableNew(
exampleVM._omrVM->_runtime->_portLibrary, OMR_GET_CALLSITE(), 0, sizeof(RootEntry), 0, 0, OMRMEM_CATEGORY_MM,
rootTableHashFn, rootTableHashEqualFn, NULL, NULL);
/* Initialize heap and collector */
{
/* This has to be done in local scope because MM_StartupManager has a destructor that references the OMR VM */
MM_StartupManagerImpl startupManager(exampleVM._omrVM);
rc = OMR_GC_IntializeHeapAndCollector(exampleVM._omrVM, &startupManager);
}
Assert_MM_true(OMR_ERROR_NONE == rc);
/* Attach current thread to the VM */
rc = OMR_Thread_Init(exampleVM._omrVM, NULL, &omrVMThread, "GCTestMailThread");
Assert_MM_true(OMR_ERROR_NONE == rc);
/* Kick off the dispatcher therads */
rc = OMR_GC_InitializeDispatcherThreads(omrVMThread);
Assert_MM_true(OMR_ERROR_NONE == rc);
OMRPORT_ACCESS_FROM_OMRVM(exampleVM._omrVM);
omrtty_printf("VM/GC INITIALIZED\n");
/* Do stuff */
MM_EnvironmentBase *env = MM_EnvironmentBase::getEnvironment(omrVMThread);
MM_ObjectAllocationInterface *allocationInterface = env->_objectAllocationInterface;
MM_GCExtensionsBase *extensions = env->getExtensions();
omrtty_printf("configuration is %s\n", extensions->configuration->getBaseVirtualTypeId());
omrtty_printf("collector interface is %s\n", env->getExtensions()->collectorLanguageInterface->getBaseVirtualTypeId());
omrtty_printf("garbage collector is %s\n", env->getExtensions()->getGlobalCollector()->getBaseVirtualTypeId());
omrtty_printf("allocation interface is %s\n", allocationInterface->getBaseVirtualTypeId());
/* Allocate objects without collection until heap exhausted */
uintptr_t allocatedFlags = 0;
uintptr_t size = extensions->objectModel.adjustSizeInBytes(24);
MM_AllocateDescription mm_allocdescription(size, allocatedFlags, true, true);
uintptr_t allocatedCount = 0;
while (true) {
omrobjectptr_t obj = (omrobjectptr_t)allocationInterface->allocateObject(env, &mm_allocdescription, env->getMemorySpace(), false);
if (NULL != obj) {
extensions->objectModel.setObjectSize(obj, mm_allocdescription.getBytesRequested());
RootEntry rEntry = {"root1", obj};
RootEntry *entryInTable = (RootEntry *)hashTableAdd(exampleVM.rootTable, &rEntry);
if (NULL == entryInTable) {
omrtty_printf("failed to add new root to root table!\n");
}
/* update entry if it already exists in table */
entryInTable->rootPtr = obj;
allocatedCount++;
} else {
break;
}
}
/* Print/verify thread allocation stats before GC */
MM_AllocationStats *allocationStats = allocationInterface->getAllocationStats();
omrtty_printf("thread allocated %d tlh bytes, %d non-tlh bytes, from %d allocations before NULL\n",
allocationStats->tlhBytesAllocated(), allocationStats->nontlhBytesAllocated(), allocatedCount);
uintptr_t allocationTotalBytes = allocationStats->tlhBytesAllocated() + allocationStats->nontlhBytesAllocated();
uintptr_t allocatedTotalBytes = size * allocatedCount;
Assert_MM_true(allocatedTotalBytes == allocationTotalBytes);
/* Force GC to print verbose system allocation stats -- should match thread allocation stats from before GC */
omrobjectptr_t obj = (omrobjectptr_t)allocationInterface->allocateObject(env, &mm_allocdescription, env->getMemorySpace(), true);
env->unwindExclusiveVMAccessForGC();
Assert_MM_false(NULL == obj);
extensions->objectModel.setObjectSize(obj, mm_allocdescription.getBytesRequested());
omrtty_printf("ALL TESTS PASSED\n");
/* Shut down */
/* Shut down the dispatcher therads */
rc = OMR_GC_ShutdownDispatcherThreads(omrVMThread);
Assert_MM_true(OMR_ERROR_NONE == rc);
/* Shut down collector */
rc = OMR_GC_ShutdownCollector(omrVMThread);
Assert_MM_true(OMR_ERROR_NONE == rc);
/* Detach from VM */
rc = OMR_Thread_Free(omrVMThread);
Assert_MM_true(OMR_ERROR_NONE == rc);
/* Shut down heap */
rc = OMR_GC_ShutdownHeap(exampleVM._omrVM);
Assert_MM_true(OMR_ERROR_NONE == rc);
/* Free root hash table */
hashTableFree(exampleVM.rootTable);
/* Balance the omrthread_attach_ex() issued above */
omrthread_detach(self);
/* Shut down VM
* This destroys the port library and the omrthread library.
* Don't use any port library or omrthread functions after this.
*
* (This also shuts down trace functionality, so the trace assertion
* macros might not work after this.)
*/
rc = OMR_Shutdown(exampleVM._omrVM);
Assert_MM_true(OMR_ERROR_NONE == rc);
return rc;
}