HW2: 加入測試用與實際可用的 player

7 files changed, 126 insertions, 0 deletions

diff --git a/.gitignore b/.gitignore
index b5d8517..a1d4086 100644
--- a/.gitignore
+++ b/.gitignore
@@ -43,3 +43,4 @@ hw1/read_server
 hw1/write_server
 hw1/sp2013_hw1_slide.pdf
 hw1/sp2013_hw1_spec.pdf
+hw2/player_[0-9]*
diff --git a/hw2/judge.c b/hw2/judge.c
index 51c195b..5e1da77 100644
--- a/hw2/judge.c
+++ b/hw2/judge.c
@@ -105,12 +105,14 @@ int main (int argc, char* argv[]) {
 				argv[0], ffd[i].fname, strerror (errno));
 			return 3;
 		}
+		xfaddfd (fdr, FD_CLOEXEC);
 		int fdw = open (ffd[i].fname, O_WRONLY | O_NONBLOCK);
 		if (fdw < 0) {
 			fprintf (stderr, "%s: cannot open `%s\' for writing: %s\n",
 				argv[0], ffd[i].fname, strerror (errno));
 			return 3;
 		}
+		xfaddfd (fdw, FD_CLOEXEC);
 
 		if (i) {
 			ffd[i].fd = fdw;
@@ -205,6 +207,8 @@ int main (int argc, char* argv[]) {
 						char* plthis = xgetres (plname);
 						char* plkey = xsprintf ("%ld", ffd[i].key);
 						char plid[2] = { c, '\0' };
+						close (STDIN_FILENO);
+						close (STDOUT_FILENO);
 						execl (plthis, plname, judgename, plid, plkey, (char*)NULL);
 						fprintf (stderr, "Cannot execl `%s\': %s\n",
 							plthis, strerror (errno));
diff --git a/hw2/player.c b/hw2/player.c
new file mode 100644
index 0000000..03a2f58
--- /dev/null
+++ b/hw2/player.c
@@ -0,0 +1,85 @@
+/* b01902062 藍挺瑋 */
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#include "xwrap.h"
+
+#include <errno.h>
+#include <limits.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/types.h>
+#include <time.h>
+#include <unistd.h>
+
+int main (int argc, char* argv[]) {
+	if (argc < 4) {
+		fprintf (stderr, "Usage: %s judge_id player_index random_key\n", argv[0]);
+		return 1;
+	}
+
+	char* judge_id = argv[1];
+	char* player_index = argv[2];
+	char* random_key = argv[3];
+
+	pid_t mypid = getpid();
+	srandom (mypid + getppid () + getpgid (mypid) + getsid (mypid) + time (NULL));
+
+	FILE* rf = NULL;
+	FILE* wf = NULL;
+	char* fifoname;
+	int oth[4];
+	int cnt[3] = { 0, 0, 0 };
+	int i = 0;
+
+	do {
+		if (wf == NULL) {
+			wf = fopen (fifoname = xstrcat ("judge", judge_id, ".FIFO", (char*)NULL), "wb");
+			if (wf == NULL) {
+				fprintf (stderr, "%s: Cannot open `%s\': %s\n", argv[0], fifoname, strerror (errno));
+				return 1;
+			}
+			free (fifoname);
+		}
+
+		const char* val = "135";
+		if (i) {
+			fprintf (wf, "%s %s %c\n", player_index, random_key, val[random () % 3]);
+		} else {
+			int hismin = INT_MAX;
+			int choice = 0;
+
+			for (int j = 0; j < 4; j++) {
+				switch (oth[j]) {
+					case 1: cnt[0]++; break;
+					case 3: cnt[1]++; break;
+					case 5: cnt[2]++; break;
+				}
+			}
+
+			for (int j = 0; j < 3; j++) {
+				if (cnt[j] < hismin) {
+					choice = j;
+					hismin = cnt[j];
+				}
+			}
+
+			fprintf (wf, "%s %s %c\n", player_index, random_key, val[choice]);
+		}
+		fflush (wf);
+
+		if (rf == NULL) {
+			rf = fopen (fifoname = xstrcat ("judge", judge_id,
+				"_", player_index, ".FIFO", (char*)NULL), "rb");
+			if (rf == NULL) {
+				fprintf (stderr, "%s: Cannot open `%s\': %s\n", argv[0], fifoname, strerror (errno));
+				return 1;
+			}
+			free (fifoname);
+		}
+	} while (++i < 20 && fscanf (rf, "%d %d %d %d", &oth[0], &oth[1], &oth[2], &oth[3]) == 4);
+
+	return 0;
+}
diff --git a/hw2/player_1 b/hw2/player_1
new file mode 100755
index 0000000..a8ffa70
--- /dev/null
+++ b/hw2/player_1
@@ -0,0 +1,3 @@
+#!/bin/sh
+
+sleep 1000
diff --git a/hw2/player_2 b/hw2/player_2
new file mode 100755
index 0000000..c1d14f4
--- /dev/null
+++ b/hw2/player_2
@@ -0,0 +1,11 @@
+#!/bin/sh
+
+exec 1> judge${1}.FIFO
+exec 0< judge${1}_${2}.FIFO
+
+echo ${2} ${3} 5
+
+while read oneline
+do
+	echo ${2} ${3} 5
+done
diff --git a/hw2/player_3 b/hw2/player_3
new file mode 100755
index 0000000..5dfb210
--- /dev/null
+++ b/hw2/player_3
@@ -0,0 +1,11 @@
+#!/bin/sh
+
+exec 1> judge${1}.FIFO
+exec 0< judge${1}_${2}.FIFO
+
+echo ${2} ${3} 3
+
+while read oneline
+do
+	echo ${2} ${3} 3
+done
diff --git a/hw2/player_4 b/hw2/player_4
new file mode 100755
index 0000000..78960f1
--- /dev/null
+++ b/hw2/player_4
@@ -0,0 +1,11 @@
+#!/bin/sh
+
+exec 1> judge${1}.FIFO
+exec 0< judge${1}_${2}.FIFO
+
+echo ${2} ${3} 1
+
+while read oneline
+do
+	echo ${2} ${3} 1
+done