X-Git-Url: http://plrg.eecs.uci.edu/git/?p=c11tester.git;a=blobdiff_plain;f=common.cc;h=8bef5194201c59f3ee3ff16bf87e1dbaa18a3319;hp=66b563a8ba6223a32a2c7d08067406fec0914c4b;hb=7d1b8dbe8d1839862c3db07e67a313d0e6efce81;hpb=0a99a3c4c1c9aab7be017682b43ddf12d609ff4b

diff --git a/common.cc b/common.cc
index 66b563a8..8bef5194 100644
--- a/common.cc
+++ b/common.cc
@@ -33,11 +33,11 @@ void print_trace(void)
 
 	model_print("\nDumping stack trace (%d frames):\n", size);
 
-	for (i = 0; i < size; i++)
+	for (i = 0;i < size;i++)
 		model_print("\t%s\n", strings[i]);
 
 	free(strings);
-#endif /* CONFIG_STACKTRACE */
+#endif	/* CONFIG_STACKTRACE */
 }
 
 void assert_hook(void)
@@ -50,14 +50,14 @@ void model_assert(bool expr, const char *file, int line)
 	if (!expr) {
 		char msg[100];
 		sprintf(msg, "Program has hit assertion in file %s at line %d\n",
-				file, line);
+						file, line);
 		model->assert_user_bug(msg);
 	}
 }
 
 #ifndef CONFIG_DEBUG
 
-static int fd_user_out; /**< @brief File descriptor from which to read user program output */
+static int fd_user_out;	/**< @brief File descriptor from which to read user program output */
 
 /**
  * @brief Setup output redirecting
@@ -79,6 +79,8 @@ static int fd_user_out; /**< @brief File descriptor from which to read user prog
  *
  * This function should only be called once.
  */
+char filename[256];
+
 void redirect_output()
 {
 	/* Save stdout for later use */
@@ -87,25 +89,13 @@ void redirect_output()
 		perror("dup");
 		exit(EXIT_FAILURE);
 	}
-
-	/* Redirect program output to a pipe */
-	int pipefd[2];
-	if (pipe(pipefd) < 0) {
-		perror("pipe");
-		exit(EXIT_FAILURE);
-	}
-	if (dup2(pipefd[1], STDOUT_FILENO) < 0) {
+	snprintf_(filename, sizeof(filename), "C11FuzzerTmp%d", getpid());
+	fd_user_out = open(filename, O_CREAT | O_TRUNC| O_RDWR, S_IRWXU);
+	if (dup2(fd_user_out, STDOUT_FILENO) < 0) {
 		perror("dup2");
 		exit(EXIT_FAILURE);
 	}
-	close(pipefd[1]);
 
-	/* Save the "read" side of the pipe for use later */
-	if (fcntl(pipefd[0], F_SETFL, O_NONBLOCK) < 0) {
-		perror("fcntl");
-		exit(EXIT_FAILURE);
-	}
-	fd_user_out = pipefd[0];
 }
 
 /**
@@ -138,8 +128,8 @@ static ssize_t read_to_buf(int fd, char *buf, size_t maxlen)
 void clear_program_output()
 {
 	fflush(stdout);
-	char buf[200];
-	while (read_to_buf(fd_user_out, buf, sizeof(buf)));
+	close(fd_user_out);
+	unlink(filename);
 }
 
 /** @brief Print out any pending program output */
@@ -147,9 +137,12 @@ void print_program_output()
 {
 	char buf[200];
 
+	model_print("---- BEGIN PROGRAM OUTPUT ----\n");
+
 	/* Gather all program output */
 	fflush(stdout);
 
+	lseek(fd_user_out, 0, SEEK_SET);
 	/* Read program output pipe and write to (real) stdout */
 	ssize_t ret;
 	while (1) {
@@ -165,5 +158,10 @@ void print_program_output()
 			ret -= res;
 		}
 	}
+
+	close(fd_user_out);
+	unlink(filename);
+
+	model_print("---- END PROGRAM OUTPUT   ----\n");
 }
-#endif /* ! CONFIG_DEBUG */
+#endif	/* ! CONFIG_DEBUG */