std::error_code
SectionMemoryManager::applyMemoryGroupPermissions(MemoryGroup &MemGroup,
unsigned Permissions) {
for (sys::MemoryBlock &MB : MemGroup.PendingMem)
if (std::error_code EC = sys::Memory::protectMappedMemory(MB, Permissions))
return EC;
MemGroup.PendingMem.clear();
// Now go through free blocks and trim any of them that don't span the entire
// page because one of the pending blocks may have overlapped it.
for (FreeMemBlock &FreeMB : MemGroup.FreeMem) {
FreeMB.Free = trimBlockToPageSize(FreeMB.Free);
// We cleared the PendingMem list, so all these pointers are now invalid
FreeMB.PendingPrefixIndex = (unsigned)-1;
}
// Remove all blocks which are now empty
MemGroup.FreeMem.erase(
std::remove_if(MemGroup.FreeMem.begin(), MemGroup.FreeMem.end(),
[](FreeMemBlock &FreeMB) {
return FreeMB.Free.size() == 0;
}),
MemGroup.FreeMem.end());
return std::error_code();
}
llvm_error_code PystonMemoryManager::applyMemoryGroupPermissions(MemoryGroup& MemGroup, unsigned Permissions) {
for (sys::MemoryBlock& MB : MemGroup.PendingMem) {
llvm_error_code ec;
ec = sys::Memory::protectMappedMemory(MB, Permissions);
if (ec) {
return ec;
}
}
MemGroup.PendingMem.clear();
// Now go through free blocks and trim any of them that don't span the entire
// page because one of the pending blocks may have overlapped it.
for (FreeMemBlock& FreeMB : MemGroup.FreeMem) {
FreeMB.Free = trimBlockToPageSize(FreeMB.Free);
// We cleared the PendingMem list, so all these pointers are now invalid
FreeMB.PendingPrefixIndex = (unsigned)-1;
}
// Remove all blocks which are now empty
MemGroup.FreeMem.erase(remove_if(MemGroup.FreeMem, [](FreeMemBlock& FreeMB) { return FreeMB.Free.size() == 0; }),
MemGroup.FreeMem.end());
#if LLVMREV < 209952
return llvm_error_code::success();
#else
return llvm_error_code();
#endif
}
