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Add Ctrl-C handling to the REPL (#537)

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Co-authored-by: Arseny Kapoulkine <arseny.kapoulkine@gmail.com>
This commit is contained in:
Jay Kruer 2022-08-02 09:32:22 -07:00 committed by GitHub
parent d3b566c258
commit b204981aca
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1 changed files with 42 additions and 0 deletions
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42
CLI/Repl.cpp
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@ -20,6 +20,9 @@
#ifdef _WIN32
#include <io.h>
#include <fcntl.h>
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
#endif
#ifdef CALLGRIND
@ -27,6 +30,7 @@
#endif
#include <locale.h>
#include <signal.h>
LUAU_FASTFLAG(DebugLuauTimeTracing)
@ -47,6 +51,35 @@ enum class CompileFormat
constexpr int MaxTraversalLimit = 50;
// Ctrl-C handling
static void sigintCallback(lua_State* L, int gc)
{
if (gc >= 0)
return;
lua_callbacks(L)->interrupt = NULL;
lua_rawcheckstack(L, 1); // reserve space for error string
luaL_error(L, "Execution interrupted");
}
static lua_State* replState = NULL;
#ifdef _WIN32
BOOL WINAPI sigintHandler(DWORD signal)
{
if (signal == CTRL_C_EVENT && replState)
lua_callbacks(replState)->interrupt = &sigintCallback;
return TRUE;
}
#else
static void sigintHandler(int signum)
{
if (signum == SIGINT && replState)
lua_callbacks(replState)->interrupt = &sigintCallback;
}
#endif
struct GlobalOptions
{
int optimizationLevel = 1;
@ -535,6 +568,15 @@ static void runRepl()
lua_State* L = globalState.get();
setupState(L);
// setup Ctrl+C handling
replState = L;
#ifdef _WIN32
SetConsoleCtrlHandler(sigintHandler, TRUE);
#else
signal(SIGINT, sigintHandler);
#endif
luaL_sandboxthread(L);
runReplImpl(L);
}