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43 #include "gmx_fatal.h"
44 #include "sighandler.h"
47 const char *gmx_stop_cond_name[] =
50 "Stop at the next neighbor search step",
51 "Stop at the next step",
55 /* these do not neccesarily match the stop condition, but are
56 referred to in the signal handler. */
57 const char *gmx_signal_name[] =
64 "remote second INT/TERM",
69 static volatile sig_atomic_t stop_condition=gmx_stop_cond_none;
70 static volatile sig_atomic_t last_signal_name=0;
72 static volatile sig_atomic_t usr_condition=0;
74 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: */
88 if (stop_condition == gmx_stop_cond_next)
90 if (stop_condition >= gmx_stop_cond_abort)
103 static void gmx_signal(int signum)
105 #ifdef HAVE_SIGACTION
106 struct sigaction act;
107 act.sa_handler = signal_handler;
108 sigemptyset(&act.sa_mask);
109 act.sa_flags = SA_RESTART;
110 sigaction(signum,&act,NULL);
112 signal(signum,signal_handler);
116 void signal_handler_install(void)
118 if (getenv("GMX_NO_TERM") == NULL)
122 fprintf(debug,"Installing signal handler for SIGTERM\n");
126 if (getenv("GMX_NO_INT") == NULL)
130 fprintf(debug,"Installing signal handler for SIGINT\n");
135 if (getenv("GMX_NO_USR1") == NULL)
139 fprintf(debug,"Installing signal handler for SIGUSR1\n");
146 gmx_stop_cond_t gmx_get_stop_condition(void)
148 return (gmx_stop_cond_t)stop_condition;
151 void gmx_set_stop_condition(gmx_stop_cond_t recvd_stop_cond)
153 if (recvd_stop_cond > stop_condition)
155 stop_condition=recvd_stop_cond;
156 if (stop_condition == gmx_stop_cond_next_ns)
158 if (stop_condition == gmx_stop_cond_next)
163 const char *gmx_get_signal_name(void)
165 return gmx_signal_name[last_signal_name];
168 gmx_bool gmx_got_usr_signal(void)
171 gmx_bool ret=(gmx_bool)usr_condition;