/*
find an executable by name in $PATH. Exclude any that are links
to exclude_name
*/
char *find_executable(const char *name, const char *exclude_name)
{
char *path;
char *tok;
struct stat st1, st2;
if (*name == '/') {
return x_strdup(name);
}
path = getenv("F90CACHE_PATH");
if (!path) {
path = getenv("PATH");
}
if (!path) {
fc_log("no PATH variable!?\n");
return NULL;
}
path = x_strdup(path);
/* search the path looking for the first compiler of the right name
that isn't us */
for (tok=strtok(path,":"); tok; tok = strtok(NULL, ":")) {
char *fname;
x_asprintf(&fname, "%s/%s", tok, name);
/* look for a normal executable file */
if (access(fname, X_OK) == 0 &&
lstat(fname, &st1) == 0 &&
stat(fname, &st2) == 0 &&
S_ISREG(st2.st_mode)) {
/* if its a symlink then ensure it doesn't
point at something called exclude_name */
if (S_ISLNK(st1.st_mode)) {
char *buf = x_realpath(fname);
if (buf) {
char *p = str_basename(buf);
if (strcmp(p, exclude_name) == 0) {
/* its a link to "f90cache" ! */
free(p);
free(buf);
continue;
}
free(buf);
free(p);
}
}
/* found it! */
free(path);
return fname;
}
free(fname);
}
return NULL;
}
void fc_log_backtrace(fc_log_t *log, int level){
void *bt_buffer[32];
size_t bt_size, i;
char **bt_strings;
bt_size = backtrace(bt_buffer, sizeof(bt_buffer) / sizeof(bt_buffer[0]));
bt_strings = backtrace_symbols(bt_buffer, bt_size);
for (i = 0; i < bt_size; i++) {
fc_log(log, level, "%s", bt_strings[i]);
}
free(bt_strings);
}
void fc_signal_handler(int signo)
{
const char *action;
fc_signal_t *sig;
for (sig = signals; sig->signo != 0; sig++) {
if (sig->signo == signo) {
break;
}
}
switch(signo) {
case fc_signal_value(FC_SIGNAL_SHUTDOWN):
fc_quit = 1;
action = "shutting down";
break;
case fc_signal_value(FC_SIGNAL_TERMINATE):
fc_terminate = 1;
action = "exiting";
break;
case fc_signal_value(FC_SIGNAL_RECONFIGURE):
fc_reconfigure = 1;
action = "reconfiguring";
break;
case fc_signal_value(FC_SIGNAL_REOPEN):
fc_reopen = 1;
action = "reopening logs";
break;
default:
break;
}
fc_log(fc_context->log, FC_LOG_NOTICE, "signal %d(%s) received, %s",
signo, sig->signame, action);
}