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Start building the scheduler for Windows

Browse source 
Building derivations is a lot harder, but the downloading goals is
portable enough.

The "common channel" code is due to Volth. I wonder if there is a way we
can factor it out into separate functions / files to avoid some
within-function CPP.

Co-authored-by: volth <volth@volth.com>
This commit is contained in:
John Ericson 2024-05-10 13:03:05 -04:00
parent 87ab3c0ea4
commit 39b2a399ad
25 changed files with 285 additions and 94 deletions
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43
src/libutil/windows/windows-async-pipe.cc Normal file
View file

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#include "windows-async-pipe.hh"
#include "windows-error.hh"
namespace nix::windows {
void AsyncPipe::createAsyncPipe(HANDLE iocp)
{
// std::cerr << (format("-----AsyncPipe::createAsyncPipe(%x)") % iocp) << std::endl;
buffer.resize(0x1000);
memset(&overlapped, 0, sizeof(overlapped));
std::string pipeName = fmt("\\\\.\\pipe\\nix-%d-%p", GetCurrentProcessId(), (void *) this);
readSide = CreateNamedPipeA(
pipeName.c_str(), PIPE_ACCESS_INBOUND | FILE_FLAG_OVERLAPPED, PIPE_TYPE_BYTE, PIPE_UNLIMITED_INSTANCES, 0, 0,
INFINITE, NULL);
if (!readSide)
throw WinError("CreateNamedPipeA(%s)", pipeName);
HANDLE hIocp = CreateIoCompletionPort(readSide.get(), iocp, (ULONG_PTR) (readSide.get()) ^ 0x5555, 0);
if (hIocp != iocp)
throw WinError("CreateIoCompletionPort(%x[%s], %x, ...) returned %x", readSide.get(), pipeName, iocp, hIocp);
if (!ConnectNamedPipe(readSide.get(), &overlapped) && GetLastError() != ERROR_IO_PENDING)
throw WinError("ConnectNamedPipe(%s)", pipeName);
SECURITY_ATTRIBUTES psa2 = {0};
psa2.nLength = sizeof(SECURITY_ATTRIBUTES);
psa2.bInheritHandle = TRUE;
writeSide = CreateFileA(pipeName.c_str(), GENERIC_WRITE, 0, &psa2, OPEN_EXISTING, 0, NULL);
if (!readSide)
throw WinError("CreateFileA(%s)", pipeName);
}
void AsyncPipe::close()
{
readSide.close();
writeSide.close();
}
}