Add file DA3

src/nachos-3.4/code/input.txt

@@ -0,0 +1,4 @@
+3
+4 2 1
+5 3 4 1
+8 5 2

src/nachos-3.4/code/sinhvien_inp.txt

@@ -0,0 +1 @@
+8 5 2

src/nachos-3.4/code/test/main.c

@@ -0,0 +1,103 @@
+#include "syscall.h"
+
+int read_unsigned_integer(OpenFileId fid, int *n)
+{
+	char c;
+	int ret;
+	*n = 0;
+	do {
+		ret = Read(&c, 1, fid);
+	} while (ret == 1 && (c < '0' || c > '9'));
+
+	while (ret == 1 && c >= '0' && c <= '9') {
+		*n = (*n) * 10 + (c - '0');
+		ret = Read(&c, 1, fid);
+	}
+
+	if (ret <= 0)
+		return -2;
+	if (c == '\n')
+		return -1;
+	return 0;
+}
+
+int main()
+{
+	OpenFileId f_in, f_out, f_sv, f_tmp;
+	SpaceId job_sv, job_vn;
+	int n, ret;
+	char c;
+	if (CreateFile("output.txt") != 0) {
+		PrintString("Cannot create output file\n");
+		Exit(-1);
+	}
+	if (CreateSemaphore("lock_file", 1) == -1) {
+		PrintString("Cannot create semaphore lock_file\n");
+		Exit(-1);
+	}
+	f_in = Open("input.txt", 1);
+	if (f_in == -1) {
+		PrintString("Fail to open input\n");
+		Exit(-1);
+	}
+	f_out = Open("output.txt", 0);
+	if (f_out == -1) {
+		PrintString("Fail to open output\n");
+		Exit(-1);
+	}
+	read_unsigned_integer(f_in, &n);
+	while (n--) {
+		if (CreateFile("sinhvien_inp.txt") != 0) {
+			PrintString("Cannot create input for sinhvien\n");
+			Exit(-1);
+		}
+		f_sv = Open("sinhvien_inp.txt", 0);
+		if (f_sv == -1) {
+			PrintString("Fail to open input for sinhvien\n");
+			Exit(-1);
+		}
+		if (CreateFile("voinuoc_input.txt") != 0) {
+			PrintString("Cannout create input for voinuoc\n");
+			Exit(-1);
+		}
+		do {
+			ret = Read(&c, 1, f_in);
+			if (ret == 1)
+				Write(&c, 1, f_sv);
+		} while (ret == 1 && c != '\n');
+		Close(f_sv);
+
+		job_sv = Exec("test/sinhvien");
+		if (job_sv == -1) {
+			PrintString("Fail to exec sinhvien\n");
+			Exit(-1);
+		}
+		job_vn = Exec("test/voinuoc");
+		if (job_vn == -1) {
+			PrintString("Fail to exec voinuoc\n");
+			Exit(-1);
+		}
+		if (Join(job_sv) == -1) {
+			PrintString("sinhvien execute uncompletely\n");
+			Exit(-1);
+		}
+		if (Join(job_vn) == -1) {
+			PrintString("voinuoc execute uncompletely\n");
+			Exit(-1);
+		}
+		f_tmp = Open("tmp.txt", 1);
+		if (f_tmp == -1) {
+			PrintString("Fail to open tmp file to read.\n");
+			Exit(-1);
+		}
+		do {
+			ret = Read(&c, 1, f_tmp);
+			if (ret == 1)
+				Write(&c, 1, f_out);
+		} while (ret == 1);
+		Close(f_tmp);
+	}
+	Close(f_in);
+	Close(f_out);
+	Exit(0);
+}

src/nachos-3.4/code/test/sinhvien.c

@@ -0,0 +1,59 @@
+#include "syscall.h"
+
+int read_unsigned_integer(OpenFileId fid, int *n)
+{
+	char c;
+	int ret;
+	*n = 0;
+	do {
+		ret = Read(&c, 1, fid);
+	} while (ret == 1 && (c < '0' || c > '9'));
+
+	while (ret == 1 && c >= '0' && c <= '9') {
+		*n = (*n) * 10 + (c - '0');
+		ret = Read(&c, 1, fid);
+	}
+
+	if (ret <= 0)
+		return -2;
+	if (c == '\n')
+		return -1;
+	return 0;
+}
+
+
+int main()
+{
+	OpenFileId f_sv, f_vn;
+	char c;
+	int ret;
+	f_sv = Open("sinhvien_inp.txt", 1);
+	if (f_sv == -1)
+		Exit(-1);
+	f_vn = Open("voinuoc_input.txt", 0);
+	if (f_vn == -1)
+		Exit(-1);
+
+	do {
+		ret = Read(&c, 1, f_sv);
+		if (ret == 1 && c >= '0' && c <= '9') {
+			Wait("lock_file");
+			do {
+				Write(&c, 1, f_vn);
+				ret = Read(&c, 1, f_sv);
+			} while (ret == 1 && c >= '0' && c <= '9');
+			Write(" ", 1, f_vn);
+			Signal("lock_file");
+		}
+	} while (ret == 1);
+	Wait("lock_file");
+	// if (CreateFile("voinuoc_input.txt") != 0) {
+	// 	Signal("lock_file");
+	// 	Exit(-1);
+	// }
+	Write("-\n", 2, f_vn);
+	Signal("lock_file");
+
+	Close(f_vn);
+	Exit(0);
+}

src/nachos-3.4/code/test/voinuoc.c

@@ -0,0 +1,52 @@
+#include "syscall.h"
+
+int read_unsigned_integer(OpenFileId fid)
+{
+	char c;
+	int ret, res = 0;
+	do {
+		ret = Read(&c, 1, fid);
+		if (ret == 1 && c == '-')
+			return -1;
+	} while (ret == 1 && (c < '0' || c > '9'));
+
+	while (ret == 1 && c >= '0' && c <= '9') {
+		res = res * 10 + (c - '0');
+		ret = Read(&c, 1, fid);
+	}
+	return res;
+}
+
+int main()
+{
+	OpenFileId f_vn, f_tmp;
+	int s_1, s_2, n;
+	f_vn = Open("voinuoc_input.txt", 0);
+	if (f_vn == -1)
+		Exit(-1);
+	if (CreateFile("tmp.txt") != 0)
+		Exit(-1);
+	f_tmp = Open("tmp.txt", 0);
+	if (f_tmp == -1)
+		Exit(-1);
+	s_1 = s_2 = 0;
+	while (1) {
+		Wait("lock_file");
+		n = read_unsigned_integer(f_vn);
+		if (n == -1) {
+			Signal("lock_file");
+			break;
+		}
+		Signal("lock_file");
+		if (s_1 <= s_2) {
+			s_1 += n;
+			Write("1 ", 2, f_tmp);
+		} else {
+			s_2 += n;
+			Write("2 ", 2, f_tmp);
+		}
+	}
+	Write("\n", 1, f_tmp);
+	Close(f_vn);
+	Close(f_tmp);
+}