From 24f5fa9973c13deab46317e240e1f4dfd1bb7f42 Mon Sep 17 00:00:00 2001
From: Oxore <oxore@protonmail.com>
Date: Sun, 30 Oct 2022 13:07:09 +0300
Subject: Add sigint handler

---
 emulator.cpp | 17 +++++++++++++++--
 1 file changed, 15 insertions(+), 2 deletions(-)

(limited to 'emulator.cpp')

diff --git a/emulator.cpp b/emulator.cpp
index c6557a2..b7e884e 100644
--- a/emulator.cpp
+++ b/emulator.cpp
@@ -22,6 +22,7 @@
 #include <sys/socket.h>
 #include <memory>
 #include <unistd.h>
+#include <signal.h>
 
 #if !defined(DEBUG_TRACE_INSTRUCTIONS)
 #   define DEBUG_TRACE_INSTRUCTIONS 0
@@ -43,6 +44,8 @@ std::vector<Breakpoint> code_bkpts{}, read_bkpts{}, write_bkpts{}, access_bkpts{
 
 uint64_t g_cycles_counter = 0;
 
+bool quit{};
+
 template<typename T, size_t S>
 struct Backtrace {
     static_assert(S > 0, "Backtrace size cannot be zero");
@@ -449,7 +452,7 @@ int emulator(M68KDebuggingControl& m68k_debug, Graphics& graphics)
         return EXIT_FAILURE;
     }
     printf("Listening TCP 0.0.0.0:%u\n", port);
-    while (1) {
+    while (!quit) {
         struct sockaddr client_address{};
         socklen_t address_len{};
         const int conn_fd = accept(socket_fd, &client_address, &address_len);
@@ -472,7 +475,7 @@ int emulator(M68KDebuggingControl& m68k_debug, Graphics& graphics)
             return -1;
         }
         GDBRemote::ExchangeContext exchange_ctx{};
-        while (1) {
+        while (!quit) {
             const ssize_t read_size = recv(conn_fd, msg_buf, MESSAGE_BUFFER_SIZE, 0);
             if (read_size > 0) {
                 ParseAndReact(conn_fd, exchange_ctx, m68k_debug, msg_buf, read_size);
@@ -512,6 +515,12 @@ int emulator(M68KDebuggingControl& m68k_debug, Graphics& graphics)
     return 0;
 }
 
+void sigint_handler(int sig)
+{
+    printf("Signal %d received, exiting\n",sig);
+    quit = true;
+}
+
 int main(int argc, char* argv[])
 {
     if (argc != 2)
@@ -530,6 +539,10 @@ int main(int argc, char* argv[])
         exit_error("Error reading %s", argv[1]);
     printf("Read into ROM %zu bytes\n", fread_ret);
 
+    struct sigaction sa;
+    sa.sa_handler = sigint_handler;
+    sigaction(SIGINT, &sa, NULL);
+
     Graphics graphics{};
     if (!graphics.IsOk()) {
         return EXIT_FAILURE;
-- 
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