PDCLIB-16: Add _unlocked variations of all I/O routines; move work into these versions

[pdclib] / functions / stdio / fread.c

diff --git a/functions/stdio/fread.c b/functions/stdio/fread.c
index 9f7d3fa0e9135f57166e656469c6e09f2100dbe2..1fdc75326c887ac6bcfc76717e0f20ce38114954 100644 (file)
--- a/functions/stdio/fread.c
+++ b/functions/stdio/fread.c
@@ -15,7 +15,9 @@
 #include <stdbool.h>
 #include <string.h>
 
-size_t fread( void * _PDCLIB_restrict ptr, size_t size, size_t nmemb, struct _PDCLIB_file_t * _PDCLIB_restrict stream )
+size_t fread_unlocked( void * _PDCLIB_restrict ptr, 
+                       size_t size, size_t nmemb, 
+                       struct _PDCLIB_file_t * _PDCLIB_restrict stream )
 {
     if ( _PDCLIB_prepread( stream ) == EOF )
     {
@@ -41,6 +43,16 @@ size_t fread( void * _PDCLIB_restrict ptr, size_t size, size_t nmemb, struct _PD
     return nmemb_i;
 }
 
+size_t fread( void * _PDCLIB_restrict ptr, 
+              size_t size, size_t nmemb, 
+              struct _PDCLIB_file_t * _PDCLIB_restrict stream )
+{
+    flockfile( stream );
+    size_t r = fread_unlocked( ptr, size, nmemb, stream );
+    funlockfile( stream );
+    return r;
+}
+
 #endif
 
 #ifdef TEST