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common: make model_print() use OS file descriptor, not C library FILE*
[model-checker.git]
/
common.cc
diff --git
a/common.cc
b/common.cc
index b71c00ab804e5a7b1817790ac825791761b8f0d8..a43064d527a03340d0f62d260b13b7638cf131f5 100644
(file)
--- a/
common.cc
+++ b/
common.cc
@@
-14,15
+14,17
@@
#define MAX_TRACE_LEN 100
#define MAX_TRACE_LEN 100
-/** @brief Model-checker output
stream
; default to stdout until redirected */
-
FILE *model_out = stdout
;
+/** @brief Model-checker output
file descriptor
; default to stdout until redirected */
+
int model_out = STDOUT_FILENO
;
#define CONFIG_STACKTRACE
/** Print a backtrace of the current program state. */
void print_trace(void)
{
#ifdef CONFIG_STACKTRACE
#define CONFIG_STACKTRACE
/** Print a backtrace of the current program state. */
void print_trace(void)
{
#ifdef CONFIG_STACKTRACE
- print_stacktrace(model_out);
+ FILE *file = fdopen(model_out, "w");
+ print_stacktrace(file);
+ fclose(file);
#else
void *array[MAX_TRACE_LEN];
char **strings;
#else
void *array[MAX_TRACE_LEN];
char **strings;
@@
-69,7
+71,7
@@
static int fd_user_out; /**< @brief File descriptor from which to read user prog
*
* Redirects user program's stdout to a pipe so that we can dump it
* selectively, when displaying bugs, etc.
*
* Redirects user program's stdout to a pipe so that we can dump it
* selectively, when displaying bugs, etc.
- * Also connects a
special file
'model_out' directly to stdout, for printing
+ * Also connects a
file descriptor
'model_out' directly to stdout, for printing
* data when needed.
*
* The model-checker can selectively choose to print/hide the user program
* data when needed.
*
* The model-checker can selectively choose to print/hide the user program
@@
-89,8
+91,7
@@
void redirect_output()
int fd;
/* Save stdout for later use */
int fd;
/* Save stdout for later use */
- fd = dup(fileno(stdout));
- model_out = fdopen(fd, "w");
+ model_out = dup(fileno(stdout));
/* Redirect program output to a pipe */
int pipefd[2];
/* Redirect program output to a pipe */
int pipefd[2];
@@
-149,16
+150,15
@@
void print_program_output()
fflush(stdout);
/* Read program output pipe and write to (real) stdout */
fflush(stdout);
/* Read program output pipe and write to (real) stdout */
-
in
t ret;
+
ssize_
t ret;
while (1) {
ret = read_to_buf(fd_user_out, buf, sizeof(buf));
if (!ret)
break;
while (ret > 0) {
while (1) {
ret = read_to_buf(fd_user_out, buf, sizeof(buf));
if (!ret)
break;
while (ret > 0) {
-
int res = fwrite(buf, 1, ret, model_ou
t);
+
ssize_t res = write(model_out, buf, re
t);
if (res < 0) {
if (res < 0) {
- errno = ferror(model_out);
- perror("fwrite");
+ perror("write");
exit(EXIT_FAILURE);
}
ret -= res;
exit(EXIT_FAILURE);
}
ret -= res;