Neko  0.9.0
A portable framework for high-order spectral element flow simulations
sighdl.c
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34 
35 #include <signal.h>
36 #include <stdint.h>
37 #include <time.h>
38 #include <sys/time.h>
39 
40 #define SIGHDL_XCPU 0x01
41 #define SIGHDL_ALRM 0x02
42 
43 #define SIGHDL_USR1 0x01
44 #define SIGHDL_USR2 0x02
45 
46 volatile uint8_t TIMEOUT = 0;
47 volatile uint8_t USR = 0;
48 
52 void sighdl(int sig_code) {
53  switch (sig_code) {
54  case SIGXCPU:
56  break;
57  case SIGALRM:
59  break;
60  case SIGUSR1:
61  USR |= SIGHDL_USR1;
62  break;
63  case SIGUSR2:
64  USR |= SIGHDL_USR2;
65  break;
66  default:
67  break;
68  }
69 }
70 
74 int8_t sighdl_timeout() {
75  return TIMEOUT;
76 }
77 
81 int8_t sighdl_usr() {
82  return USR;
83 }
84 
85 
89 int sighdl_set_timeout(int *sec) {
90  struct itimerval itv;
91  struct sigaction sig_param;
92 
93  TIMEOUT &= ~SIGHDL_ALRM;
94  sig_param.sa_handler = sighdl;
95  sigemptyset(&sig_param.sa_mask);
96  sig_param.sa_flags = SA_RESTART;
97  if (sigaction(SIGALRM, &sig_param, 0) < 0)
98  return -1;
99 
100  itv.it_value.tv_sec = (*sec);
101  itv.it_value.tv_usec = 0;
102  itv.it_interval.tv_sec = 0;
103  itv.it_interval.tv_usec = 0;
104  return setitimer(ITIMER_REAL, &itv, 0);
105 }
106 
111  struct sigaction sig_param;
112 
113  TIMEOUT &= ~SIGHDL_XCPU;
114  sig_param.sa_handler = sighdl;
115  sigemptyset(&sig_param.sa_mask);
116  sig_param.sa_flags = SA_RESTART;
117  return sigaction(SIGXCPU, &sig_param, 0);
118 }
119 
124  struct sigaction sig_param;
125 
126  USR = 0;
127  sig_param.sa_handler = sighdl;
128  sigemptyset(&sig_param.sa_mask);
129  sig_param.sa_flags = SA_RESTART;
130  if (sigaction(SIGUSR1, &sig_param, 0) < 0)
131  return -1;
132  return sigaction(SIGUSR2, &sig_param, 0);
133 }
void sighdl(int sig_code)
Definition: sighdl.c:52
#define SIGHDL_XCPU
Definition: sighdl.c:40
int sighdl_trap_cpulimit()
Definition: sighdl.c:110
volatile uint8_t TIMEOUT
Definition: sighdl.c:46
int8_t sighdl_usr()
Definition: sighdl.c:81
#define SIGHDL_USR1
Definition: sighdl.c:43
#define SIGHDL_USR2
Definition: sighdl.c:44
volatile uint8_t USR
Definition: sighdl.c:47
int sighdl_trap_usr()
Definition: sighdl.c:123
int sighdl_set_timeout(int *sec)
Definition: sighdl.c:89
int8_t sighdl_timeout()
Definition: sighdl.c:74
#define SIGHDL_ALRM
Definition: sighdl.c:41