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39 #include "sighandler.h"
46 #include "gromacs/utility/fatalerror.h"
48 const char *gmx_stop_cond_name
[] =
51 "Stop at the next neighbor search step",
52 "Stop at the next step",
56 /* these do not neccesarily match the stop condition, but are
57 referred to in the signal handler. */
58 const char *gmx_signal_name
[] =
65 "remote second INT/TERM",
70 static volatile sig_atomic_t stop_condition
= gmx_stop_cond_none
;
71 static volatile sig_atomic_t last_signal_name
= 0;
73 static volatile sig_atomic_t usr_condition
= 0;
75 static void signal_handler(int n
)
79 /* windows doesn't do SIGINT correctly according to ANSI (yes, signals are in
80 ANSI C89, and windows spawns a thread specifically to run the INT signal
81 handler), but that doesn't matter for a simple signal handler like this. */
84 /* we explicitly set things up to allow this: */
94 if (stop_condition
== gmx_stop_cond_next
)
98 if (stop_condition
>= gmx_stop_cond_abort
)
113 static void gmx_signal(int signum
)
116 struct sigaction act
;
117 act
.sa_handler
= signal_handler
;
118 sigemptyset(&act
.sa_mask
);
119 act
.sa_flags
= SA_RESTART
;
120 sigaction(signum
, &act
, NULL
);
122 signal(signum
, signal_handler
);
126 void signal_handler_install(void)
128 if (getenv("GMX_NO_TERM") == NULL
)
132 fprintf(debug
, "Installing signal handler for SIGTERM\n");
136 if (getenv("GMX_NO_INT") == NULL
)
140 fprintf(debug
, "Installing signal handler for SIGINT\n");
145 if (getenv("GMX_NO_USR1") == NULL
)
149 fprintf(debug
, "Installing signal handler for SIGUSR1\n");
156 gmx_stop_cond_t
gmx_get_stop_condition(void)
158 return (gmx_stop_cond_t
)stop_condition
;
161 void gmx_set_stop_condition(gmx_stop_cond_t recvd_stop_cond
)
163 if (recvd_stop_cond
> stop_condition
)
165 stop_condition
= recvd_stop_cond
;
166 if (stop_condition
== gmx_stop_cond_next_ns
)
168 last_signal_name
= 4;
170 if (stop_condition
== gmx_stop_cond_next
)
172 last_signal_name
= 5;
177 const char *gmx_get_signal_name(void)
179 return gmx_signal_name
[last_signal_name
];
182 gmx_bool
gmx_got_usr_signal(void)
185 gmx_bool ret
= static_cast<gmx_bool
>(usr_condition
);