int main(int argc, char **argv) {
struct sigaction sigact;
init_pagefile(); // init page file
open_logger(); // open logfile
/* Create shared memory and init vmem structure */
vmem_init();
TEST_AND_EXIT_ERRNO(!vmem, "Error initialising vmem");
PRINT_DEBUG((stderr, "vmem successfully created\n"));
// scan parameter
vmem->adm.program_name = argv[0];
vmem->adm.page_rep_algo = VMEM_ALGO_AGING;
scan_params(argc, argv);
/* Setup signal handler */
sigact.sa_handler = sighandler;
sigemptyset(&sigact.sa_mask);
sigact.sa_flags = 0;
TEST_AND_EXIT_ERRNO(sigaction(SIGUSR1, &sigact, NULL) == -1,
"Error installing signal handler for USR1");
PRINT_DEBUG((stderr, "USR1 handler successfully installed\n"));
TEST_AND_EXIT_ERRNO(sigaction(SIGUSR2, &sigact, NULL) == -1,
"Error installing signal handler for USR2");
PRINT_DEBUG((stderr, "USR2 handler successfully installed\n"));
TEST_AND_EXIT_ERRNO(sigaction(SIGINT, &sigact, NULL) == -1,
"Error installing signal handler for INT");
PRINT_DEBUG((stderr, "INT handler successfully installed\n"));
/* Signal processing loop */
while (1) {
signal_number = 0;
pause();
if (signal_number == SIGUSR1) { /* Page fault */
PRINT_DEBUG((stderr, "Processed SIGUSR1\n"));
signal_number = 0;
} else if (signal_number == SIGUSR2) { /* PT dump */
PRINT_DEBUG((stderr, "Processed SIGUSR2\n"));
signal_number = 0;
} else if (signal_number == SIGINT) {
PRINT_DEBUG((stderr, "Processed SIGINT\n"));
}
}
return 0;
}
int main(void) {
struct sigaction sigact;
/* Init pagefile */
init_pagefile(MMANAGE_PFNAME);
/* Open logfile */
open_logfile();
/* Create shared memory and init vmem structure */
vmem_init();
/* Setup signal handler */
/* Handler for USR1 */
sigact.sa_handler = save_sig_no;
sigemptyset(&sigact.sa_mask);
sigact.sa_flags = 0;
if(sigaction(SIGUSR1, &sigact, NULL) == -1) {
perror("Error installing signal handler for USR1");
exit(EXIT_FAILURE);
}
else {
DEBUG(fprintf(stderr, "USR1 handler successfully installed\n"));
}
if(sigaction(SIGUSR2, &sigact, NULL) == -1) {
perror("Error installing signal handler for USR2");
exit(EXIT_FAILURE);
}
else {
DEBUG(fprintf(stderr, "USR2 handler successfully installed\n"));
}
if(sigaction(SIGINT, &sigact, NULL) == -1) {
perror("Error installing signal handler for INT");
exit(EXIT_FAILURE);
}
else {
DEBUG(fprintf(stderr, "INT handler successfully installed\n"));
}
/* Signal processing loop */
signal_proccessing_loop();
exit(EXIT_SUCCESS);
}
int
main(void)
{
struct sigaction sigact;
/* Init pagefile */
init_pagefile(MMANAGE_PFNAME);
if(!pagefile) {
perror("Error creating pagefile\n");
exit(EXIT_FAILURE);
}
#ifdef DEBUG_MESSAGES
else {
fprintf(stderr, "pagefile successfully created\n");
}
#endif /* DEBUG_MESSAGES */
/* Open logfile */
logfile = fopen(MMANAGE_LOGFNAME, "w");
if(!logfile) {
perror("Error creating logfile");
exit(EXIT_FAILURE);
}
/* Create shared memory and init vmem structure */
vmem_init();
if(!vmem) {
perror("Error initialising vmem");
exit(EXIT_FAILURE);
}
#ifdef DEBUG_MESSAGES
else {
fprintf(stderr, "vmem successfully created\n");
}
#endif /* DEBUG_MESSAGES */
/* Setup signal handler */
/* Handler for USR1 */
sigact.sa_handler = sighandler;
sigemptyset(&sigact.sa_mask);
sigact.sa_flags = 0;
if(sigaction(SIGUSR1, &sigact, NULL) == -1) {
perror("Error installing signal handler for USR1");
exit(EXIT_FAILURE);
}
#ifdef DEBUG_MESSAGES
else {
fprintf(stderr, "USR1 handler successfully installed\n");
}
#endif /* DEBUG_MESSAGES */
if(sigaction(SIGUSR2, &sigact, NULL) == -1) {
perror("Error installing signal handler for USR2");
exit(EXIT_FAILURE);
}
#ifdef DEBUG_MESSAGES
else {
fprintf(stderr, "USR2 handler successfully installed\n");
}
#endif /* DEBUG_MESSAGES */
if(sigaction(SIGINT, &sigact, NULL) == -1) {
perror("Error installing signal handler for INT");
exit(EXIT_FAILURE);
}
#ifdef DEBUG_MESSAGES
else {
fprintf(stderr, "INT handler successfully installed\n");
}
#endif /* DEBUG_MESSAGES */
/* Signal processing loop */
while(1)
{
signal_number = 0;
pause();
if(signal_number == SIGUSR1)
{ /* Page fault */
#ifdef DEBUG_MESSAGES
fprintf(stderr, "Processed SIGUSR1\n");
#endif /* DEBUG_MESSAGES */
signal_number = 0;
}
else if(signal_number == SIGUSR2)
{ /* PT dump */
#ifdef DEBUG_MESSAGES
fprintf(stderr, "Processed SIGUSR2\n");
#endif /* DEBUG_MESSAGES */
signal_number = 0;
}
else if(signal_number == SIGINT)
{
#ifdef DEBUG_MESSAGES
fprintf(stderr, "Processed SIGINT\n");
#endif /* DEBUG_MESSAGES */
}
}
return 0;
}
