Changeset 4871:fd43e266a063 in roaraudio

Timestamp:

04/26/11 10:24:47 (12 years ago)

Author:

phi

Branch:

default

Phase:

public

Message:

added some more error handling functions

Files:

• include/libroar/error.h (modified) (1 diff)
• libroar/error.c (modified) (3 diffs)

include/libroar/error.h

@@ -74 +74 @@
 
 void   roar_err_clear(void);
+void   roar_err_clear_errno(void);
+void   roar_err_clear_all(void);
+void   roar_err_update(void);
+int    roar_err_is_errno_clean(void);
 void   roar_err_set(const int error);
 void   roar_err_from_errno(void);

libroar/error.c

@@ -36 +36 @@
 #include "libroar.h"
 
+// 'no error' value for errno.
+// zero is true for GNU/Linux.
+// don't know about other systems.
+#define CLEAN_ERRNO 0
+
 int roar_errno = ROAR_ERROR_NONE;
 
@@ -109 +114 @@
 }
 
+void   roar_err_clear_errno(void) {
+ errno = CLEAN_ERRNO;
+}
+
+void   roar_err_clear_all(void) {
+ roar_err_clear();
+ roar_err_clear_errno();
+}
+
+void   roar_err_update(void) {
+ int * err = roar_errno2();
+ if ( *err != ROAR_ERROR_NONE ) {
+  roar_err_to_errno();
+ } else if ( !roar_err_is_errno_clean() ) {
+  roar_err_from_errno();
+ }
+}
+
+int    roar_err_is_errno_clean(void) {
+ return errno == CLEAN_ERRNO ? 1 : 0;
+}
+
 void   roar_err_set(const int error) {
  *roar_errno2() = error;
@@ -228 +255 @@
  switch (*err) {
   case ROAR_ERROR_NONE:
-    errno = 0; // just gussing
+    roar_err_clear_errno();
    break;
 #ifdef EPERM