bool ProcessInfo::blockInMemory(const void* start) {
unsigned char x = 0;
if (mincore(const_cast<void*>(alignToStartOfPage(start)), getPageSize(), &x)) {
log() << "mincore failed: " << errnoWithDescription() << endl;
return 1;
}
return x & 0x1;
}
bool ProcessInfo::pagesInMemory(const void* start, size_t numPages, vector<char>* out) {
out->resize(numPages);
if (mincore(alignToStartOfPage(start), numPages * getPageSize(), &out->front())) {
log() << "mincore failed: " << errnoWithDescription() << endl;
return false;
}
for (size_t i = 0; i < numPages; ++i) {
(*out)[i] &= 0x1;
}
return true;
}
bool ProcessInfo::pagesInMemory(const void* start, size_t numPages, vector<char>* out) {
out->resize(numPages);
scoped_array<PSAPI_WORKING_SET_EX_INFORMATION> wsinfo(
new PSAPI_WORKING_SET_EX_INFORMATION[numPages]);
const void* startOfFirstPage = alignToStartOfPage(start);
for (size_t i = 0; i < numPages; i++) {
wsinfo[i].VirtualAddress = reinterpret_cast<void*>(
reinterpret_cast<unsigned long long>(startOfFirstPage) + i * getPageSize());
}
BOOL result = psapiGlobal->QueryWSEx(GetCurrentProcess(),
wsinfo.get(),
sizeof(PSAPI_WORKING_SET_EX_INFORMATION) * numPages);
if (!result) return false;
for (size_t i = 0; i < numPages; ++i) {
(*out)[i] = wsinfo[i].VirtualAttributes.Valid ? 1 : 0;
}
return true;
}
