bool DepositLightCore::prepare() {
DYSECTVERBOSE(true, "Preparing deposit light core action");
#ifdef CALLPATH_ENABLED
prepared = true;
findAggregates();
string libraryPath;
char *envValue;
Domain *domain = owner->getDomain();
bool boolRet;
vector<Process::ptr>::iterator procIter;
ProcessSet::ptr procs;
WalkerSet *allWalkers;
Process::ptr *proc;
ProcDebug *pDebug;
if(domain == NULL)
return DYSECTWARN(false, "Domain not found when preparing DepositLightCore action");
allWalkers = domain->getAllWalkers();
DYSECTVERBOSE(true, "Preparing deposit light core action %d", allWalkers->size());
envValue = getenv("STAT_PREFIX");
if (envValue != NULL)
libraryPath = envValue;
else
libraryPath = STAT_PREFIX;
libraryPath += "/lib/libcallpathwrap.so";
for (WalkerSet::iterator i = allWalkers->begin(); i != allWalkers->end(); i++) {
pDebug = dynamic_cast<ProcDebug *>((*i)->getProcessState());
proc = &(pDebug->getProc());
DYSECTVERBOSE(true, "loading library %s", libraryPath.c_str());
// This will fail in launch mode since process hasn't been started yet. We will also try loading the library on finishBE
// This will also be called multiple times if multiple probes use this action, but this won't result in any errors
if (Backend::loadLibrary(*proc, libraryPath) != OK) {
return DYSECTWARN(false, "Failed to load library %s: %s", libraryPath.c_str(), Stackwalker::getLastErrorMsg());
}
}
DYSECTVERBOSE(true, "Prepared deposit light core action");
#endif //ifdef CALLPATH_ENABLED
return true;
}
bool PCLibraryState::getAOut(LibAddrPair &ao)
{
Process::ptr proc = pdebug->getProc();
CHECK_PROC_LIVE;
Library::ptr lib = proc->libraries().getExecutable();
if (!lib) {
sw_printf("[%s:%u] - Could not get executable\n", FILE__, __LINE__);
return false;
}
ao = LibAddrPair(lib->getName(), lib->getLoadAddress());
return true;
}
bool PCLibraryState::updateLibraries()
{
Process::ptr proc = pdebug->getProc();
CHECK_PROC_LIVE;
LibraryPool::iterator i;
for (i = proc->libraries().begin(); i != proc->libraries().end(); i++)
{
checkForNewLib(*i);
}
return true;
}
bool PCLibraryState::getLibraryAtAddr(Address addr, LibAddrPair &lib)
{
Process::ptr proc = pdebug->getProc();
CHECK_PROC_LIVE;
/**
* An OS can have a list of platform-special libs (currently only the
* vsyscall DSO on Linux). Those don't appear in the normal link_map
* and thus won't have dynamic addresses. Check their library range
* manually.
**/
vector<pair<LibAddrPair, unsigned int> > arch_libs;
updateLibsArch(arch_libs);
vector<pair<LibAddrPair, unsigned int> >::iterator j;
for (j = arch_libs.begin(); j != arch_libs.end(); j++) {
string name = (*j).first.first;
Address start = (*j).first.second;
Address size = (*j).second;
if (addr >= start && addr < start + size) {
lib.first = name;
lib.second = start;
return true;
}
}
/**
* Look up the address in our cache of libraries
**/
bool ret = findInCache(proc, addr, lib);
if (ret) {
return true;
}
/**
* Cache lookup failed. Instead of iterating over every library,
* look at the link map in memory. This allows us to avoid opening
* files.
**/
// Do a fast in-memory scan
ret = memoryScan(proc, addr, lib);
if (ret) {
return true;
}
return false;
}
void PCLibraryState::checkForNewLib(Library::ptr lib)
{
if (lib->getData())
return;
sw_printf("[%s:%u] - Detected new library %s at %lx, notifying\n",
FILE__, __LINE__, lib->getName().c_str(), lib->getLoadAddress());
lib->setData((void *) 0x1);
StepperGroup *group = pdebug->getWalker()->getStepperGroup();
LibAddrPair la(lib->getName(), lib->getLoadAddress());
group->newLibraryNotification(&la, library_load);
}
bool PCLibraryState::getLibraries(std::vector<LibAddrPair> &libs, bool allow_refresh)
{
Process::ptr proc = pdebug->getProc();
CHECK_PROC_LIVE;
LibraryPool::iterator i;
for (i = proc->libraries().begin(); i != proc->libraries().end(); i++)
{
if (allow_refresh)
checkForNewLib(*i);
libs.push_back(LibAddrPair((*i)->getName(), (*i)->getLoadAddress()));
}
vector<pair<LibAddrPair, unsigned int> > arch_libs;
vector<pair<LibAddrPair, unsigned int> >::iterator j;
updateLibsArch(arch_libs);
for (j = arch_libs.begin(); j != arch_libs.end(); j++) {
libs.push_back(j->first);
}
return true;
}
bool BucketAgg::collect(void* process, void *thread) {
Process::const_ptr process_ptr = *(Process::const_ptr*)process;
Thread::const_ptr thread_ptr = *(Thread::const_ptr*)thread;
if(!process_ptr) {
return DYSECTVERBOSE(false, "Process object not available");
return false;
}
// Get the rank of the process
Probe *owner = getOwner();
if (!owner) {
return DYSECTVERBOSE(false, "Could not find Probe owner");
}
Domain *dom = owner->getDomain();
if (!dom) {
return DYSECTVERBOSE(false, "Could not find Domain");
}
std::map<int, Dyninst::ProcControlAPI::Process::ptr> *mpiRankToProcessMap;
mpiRankToProcessMap = dom->getMpiRankToProcessMap();
if (!mpiRankToProcessMap) {
return DYSECTVERBOSE(false, "Could not find MPI rank map");
}
int rank = -1;
std::map<int, Dyninst::ProcControlAPI::Process::ptr>::iterator iter;
for (iter = mpiRankToProcessMap->begin(); iter != mpiRankToProcessMap->end(); iter++) {
if (iter->second == process_ptr) {
rank = iter->first;
break;
}
}
if (rank == -1) {
return DYSECTVERBOSE(false, "Failed to determine Rank");
}
// Read the value of the variable
ProcDebug* pDebug;
Walker* proc = (Walker*)process_ptr->getData();
if(!proc) {
return DYSECTVERBOSE(false, "Could not get walker from process");
}
bool wasRunning;
if (process_ptr->allThreadsRunning()) {
wasRunning = true;
pDebug = dynamic_cast<ProcDebug *>(proc->getProcessState());
if (pDebug == NULL) {
return DYSECTWARN(false, "Failed to dynamic_cast ProcDebug pointer");
}
if (pDebug->isTerminated()) {
return DYSECTWARN(false, "Process is terminated");
}
if (pDebug->pause() == false) {
return DYSECTWARN(false, "Failed to pause process");
}
}
DataRef ref(Value::floatType, variableName.c_str());
TargetVar var(variableName.c_str());
ConditionResult condRes;
Value val;
DysectErrorCode readStatus = var.getValue(condRes, val, process_ptr, thread_ptr->getTID());
if (wasRunning == true) {
if (pDebug->resume() == false) {
return DYSECTWARN(false, "Failed to resume process");
}
}
if (readStatus != OK) {
return DYSECTWARN(false, "Could not read value from reference");
}
if (condRes != Resolved) {
return DYSECTINFO(false, "Value not available - could be optimized out!");
}
if (variableType == Value::noType) {
variableType = val.getType();
}
int bucket = getBucketFromValue(val);
buckets[bucket] += 1;
string valStr;
val.getStr(valStr);
DYSECTVERBOSE(true, "Rank %d read the value %s and will place it in bucket %d", rank, valStr.c_str(), bucket);
return true;
}
