feat(judger): support non-integer time limit

judger/uoj_judger/include/uoj_judger.h

@@ -633,6 +633,23 @@ int conf_int(const string &key, int num, const int &val) {
 int conf_int(const string &key)  {
 	return conf_int(key, 0);
 }
+double conf_double(const string &key, const double &val) {
+	if (config.count(key) == 0) {
+		return val;
+	}
+	return stod(config[key]);
+}
+double conf_double(const string &key, int num, const double &val) {
+	ostringstream sout;
+	sout << key << "_" << num;
+	if (config.count(sout.str()) == 0) {
+		return conf_double(key, val);
+	}
+	return stod(config[sout.str()]);
+}
+double conf_double(const string &key) {
+	return conf_double(key, 0);
+}
 string conf_file_name_with_num(string s, int num) {
 	ostringstream name;
 	if (num < 0) {
@@ -664,10 +681,10 @@ runp::limits_t conf_run_limit(string pre, const int &num, const runp::limits_t &
 		pre += "_";
 	}
 	runp::limits_t limits;
-	limits.time = conf_int(pre + "time_limit", num, val.time);
+	limits.time = conf_double(pre + "time_limit", num, val.time);
 	limits.memory = conf_int(pre + "memory_limit", num, val.memory);
 	limits.output = conf_int(pre + "output_limit", num, val.output);
-	limits.real_time = conf_int(pre + "real_time_limit", num, val.real_time);
+	limits.real_time = conf_double(pre + "real_time_limit", num, val.real_time);
 	limits.stack = conf_int(pre + "stack_limit", num, val.stack);
 	return limits;
 }

judger/uoj_judger/include/uoj_judger_v2.h

@@ -501,6 +501,23 @@ int conf_int(const string &key, int num, const int &val) {
 int conf_int(const string &key)  {
 	return conf_int(key, 0);
 }
+double conf_double(const string &key, const double &val) {
+	if (uconfig.count(key) == 0) {
+		return val;
+	}
+	return stod(uconfig[key]);
+}
+double conf_double(const string &key, int num, const double &val) {
+	ostringstream sout;
+	sout << key << "_" << num;
+	if (uconfig.count(sout.str()) == 0) {
+		return conf_double(key, val);
+	}
+	return stod(uconfig[sout.str()]);
+}
+double conf_double(const string &key) {
+	return conf_double(key, 0);
+}
 string conf_file_name_with_num(string s, int num) {
 	ostringstream name;
 	if (num < 0) {
@@ -530,10 +547,10 @@ runp::limits_t conf_run_limit(string pre, const int &num, const runp::limits_t &
 		pre += "_";
 	}
 	runp::limits_t limits;
-	limits.time = conf_int(pre + "time_limit", num, val.time);
+	limits.time = conf_double(pre + "time_limit", num, val.time);
 	limits.memory = conf_int(pre + "memory_limit", num, val.memory);
 	limits.output = conf_int(pre + "output_limit", num, val.output);
-	limits.real_time = conf_int(pre + "real_time_limit", num, val.real_time);
+	limits.real_time = conf_double(pre + "real_time_limit", num, val.real_time);
 	limits.stack = conf_int(pre + "stack_limit", num, val.real_time);
 	return limits;
 }

judger/uoj_judger/include/uoj_run.h

@@ -133,14 +133,14 @@ namespace runp {
 	fs::path run_path;
 
 	struct limits_t {
-		int time;
+		double time;
 		int memory;
 		int output;
-		int real_time;
+		double real_time;
 		int stack;
 
 		limits_t() = default;
-		limits_t(const int &_time, const int &_memory, const int &_output)
+		limits_t(const double &_time, const int &_memory, const int &_output)
 				: time(_time), memory(_memory), output(_output), real_time(-1), stack(-1) {
 		}
 	};

judger/uoj_judger/run/run_program.cpp

@@ -51,10 +51,10 @@ error_t run_program_argp_parse_opt (int key, char *arg, struct argp_state *state
 
 	switch (key) {
 		case 'T':
-			config->limits.time = atoi(arg);
+			config->limits.time = stod(arg);
 			break;
 		case 'R':
-			config->limits.real_time = atoi(arg);
+			config->limits.real_time = stod(arg);
 			break;
 		case 'M':
 			config->limits.memory = atoi(arg);
@@ -201,9 +201,15 @@ void set_limit(int r, int rcur, int rmax = -1)  {
 	}
 }
 
-void set_user_cpu_time_limit(int tl) {
+void set_user_cpu_time_limit(double tl) {
 	struct itimerval val;
-	val.it_value = {tl, 100 * 1000};
+	long tl_sec = (long)tl;
+	long tl_usec = (long)((tl - floor(tl)) * 1000 + 100) * 1000;
+	if (tl_usec >= 1'000'000l) {
+		tl_sec++;
+		tl_usec -= 1'000'000l;
+	}
+	val.it_value = {tl_sec, tl_usec};
 	val.it_interval = {0, 100 * 1000};
 	setitimer(ITIMER_VIRTUAL, &val, NULL);
 }

judger/uoj_judger/run/run_program_sandbox.h

@@ -1,5 +1,6 @@
 #include <iostream>
 #include <sstream>
+#include <cmath>
 #include <cstdio>
 #include <cstdlib>
 #include <cstring>