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Getting better

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visionmercer 2026-06-23 12:40:40 +02:00
commit a781ef1453
1 changed files with 21 additions and 27 deletions
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30
terminkey.h
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@ -86,12 +86,10 @@ int termwidth() {
}
int ipc_init() {
// Remove PIPE_NOWAIT so the pipe handles state transmissions reliably.
// We will handle non-blocking checks manually using PeekNamedPipe.
hServerPipe = CreateNamedPipe(
"\\\\.\\pipe\\cimp_ipc",
PIPE_ACCESS_DUPLEX | FILE_FLAG_FIRST_PIPE_INSTANCE,
PIPE_TYPE_BYTE | PIPE_READMODE_BYTE,
PIPE_TYPE_BYTE | PIPE_READMODE_BYTE | PIPE_NOWAIT, // Enable non-blocking wait mode
1,
4096,
4096,
@ -113,34 +111,30 @@ int ipc_check_message(uintptr_t buffer_ptr, int max_len) {
char* buffer = (char*)buffer_ptr;
DWORD bytesRead = 0;
DWORD bytesAvail = 0;
// Use PeekNamedPipe to see if a client has connected and written data
// without blocking the main QB64 execution loop.
// In non-blocking mode, ConnectNamedPipe returns immediately.
// If a client is connected, it returns non-zero, or zero with ERROR_PIPE_CONNECTED.
BOOL connected = ConnectNamedPipe(hServerPipe, NULL) ?
TRUE : (GetLastError() == ERROR_PIPE_CONNECTED);
if (connected) {
DWORD bytesAvail = 0;
// Verify that data has safely populated the buffer before reading
if (PeekNamedPipe(hServerPipe, NULL, 0, NULL, &bytesAvail, NULL)) {
if (bytesAvail > 0) {
// Data is waiting! Safely read it.
BOOL success = ReadFile(hServerPipe, buffer, max_len - 1, &bytesRead, NULL);
if (success && bytesRead > 0) {
buffer[bytesRead] = '\0';
// Disconnect and immediately reconnect to reset the pipe state for the next client
DisconnectNamedPipe(hServerPipe);
DisconnectNamedPipe(hServerPipe); // Reset pipe state for the next command
return (int)bytesRead;
}
}
} else {
// If Peek fails because a client connected but broke the pipe/disconnected
DWORD err = GetLastError();
if (err == ERROR_BROKEN_PIPE) {
if (GetLastError() == ERROR_BROKEN_PIPE) {
DisconnectNamedPipe(hServerPipe);
}
}
// Non-blocking fallback: try to listen for the next incoming connection choice
// strictly if the pipe is currently completely idle.
ConnectNamedPipe(hServerPipe, NULL);
}
return 0;
}