/** Compare memory between snapshots
*
* @param addr1 Address in the first snapshot
* @param snapshot1 First snapshot
* @param addr2 Address in the second snapshot
* @param snapshot2 Second snapshot
* @return same as memcmp
* */
int MC_snapshot_memcmp(
const void* addr1, mc_snapshot_t snapshot1,
const void* addr2, mc_snapshot_t snapshot2, int process_index, size_t size)
{
mc_mem_region_t region1 = mc_get_snapshot_region(addr1, snapshot1, process_index);
mc_mem_region_t region2 = mc_get_snapshot_region(addr2, snapshot2, process_index);
return MC_snapshot_region_memcmp(addr1, region1, addr2, region2, size);
}
const void* Snapshot::read_bytes(void* buffer, std::size_t size, RemotePtr<void> address, int process_index,
ReadOptions options) const
{
mc_mem_region_t region = mc_get_snapshot_region((void*)address.address(), this, process_index);
if (region) {
const void* res = MC_region_read(region, buffer, (void*)address.address(), size);
if (buffer == res || options & ReadOptions::lazy())
return res;
else {
memcpy(buffer, res, size);
return buffer;
}
} else
return this->process()->read_bytes(buffer, size, address, process_index, options);
}
const void* Snapshot::read_bytes(void* buffer, std::size_t size,
remote_ptr<void> address, int process_index,
AddressSpace::ReadMode mode) const
{
mc_mem_region_t region = mc_get_snapshot_region((void*)address.address(), this, process_index);
if (region) {
const void* res = MC_region_read(region, buffer, (void*)address.address(), size);
if (buffer == res || mode == AddressSpace::Lazy)
return res;
else {
memcpy(buffer, res, size);
return buffer;
}
}
else
return this->process()->read_bytes(
buffer, size, address, process_index, mode);
}
