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42 #include "gmx_fatal.h"
43 #include "sighandler.h"
46 const char *gmx_stop_cond_name[] =
49 "Stop at the next neighbor search step",
50 "Stop at the next step",
54 /* these do not neccesarily match the stop condition, but are
55 referred to in the signal handler. */
56 const char *gmx_signal_name[] =
63 "remote second INT/TERM",
68 static volatile sig_atomic_t stop_condition = gmx_stop_cond_none;
69 static volatile sig_atomic_t last_signal_name = 0;
71 static volatile sig_atomic_t usr_condition = 0;
73 static void signal_handler(int n)
77 /* windows doesn't do SIGINT correctly according to ANSI (yes, signals are in
78 ANSI C89, and windows spawns a thread specifically to run the INT signal
79 handler), but that doesn't matter for a simple signal handler like this. */
82 /* we explicitly set things up to allow this: */
92 if (stop_condition == gmx_stop_cond_next)
96 if (stop_condition >= gmx_stop_cond_abort)
111 static void gmx_signal(int signum)
113 #ifdef HAVE_SIGACTION
114 struct sigaction act;
115 act.sa_handler = signal_handler;
116 sigemptyset(&act.sa_mask);
117 act.sa_flags = SA_RESTART;
118 sigaction(signum, &act, NULL);
120 signal(signum, signal_handler);
124 void signal_handler_install(void)
126 if (getenv("GMX_NO_TERM") == NULL)
130 fprintf(debug, "Installing signal handler for SIGTERM\n");
134 if (getenv("GMX_NO_INT") == NULL)
138 fprintf(debug, "Installing signal handler for SIGINT\n");
143 if (getenv("GMX_NO_USR1") == NULL)
147 fprintf(debug, "Installing signal handler for SIGUSR1\n");
154 gmx_stop_cond_t gmx_get_stop_condition(void)
156 return (gmx_stop_cond_t)stop_condition;
159 void gmx_set_stop_condition(gmx_stop_cond_t recvd_stop_cond)
161 if (recvd_stop_cond > stop_condition)
163 stop_condition = recvd_stop_cond;
164 if (stop_condition == gmx_stop_cond_next_ns)
166 last_signal_name = 4;
168 if (stop_condition == gmx_stop_cond_next)
170 last_signal_name = 5;
175 const char *gmx_get_signal_name(void)
177 return gmx_signal_name[last_signal_name];
180 gmx_bool gmx_got_usr_signal(void)
183 gmx_bool ret = (gmx_bool)usr_condition;