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changeset 1997:48419ad1ade5 draft

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add read() error check in
author masa
date Mon, 21 Apr 2014 19:54:45 +0900
parents 9657434c21a4
children ed30952c240e
files example/word_count/main.cc
diffstat 1 files changed, 6 insertions(+), 7 deletions(-) [+]
line wrap: on
line diff
--- a/example/word_count/main.cc	Mon Apr 21 18:49:21 2014 +0900
+++ b/example/word_count/main.cc	Mon Apr 21 19:54:45 2014 +0900
@@ -49,21 +49,20 @@
 static void
 my_read(char *filename, WordCount *w, TaskManager *manager)
 {
-    /*マッピングだよ!*/
-    struct stat sb;
     long fd = w->fd;
 
     if ((fd=open(filename,O_RDONLY,0666))==0) {
         fprintf(stderr,"can't open %s\n",filename);
     }
 
-    if (fstat(fd,&sb)) {
-        fprintf(stderr,"can't fstat %s\n",filename);
-    }
-
     //madvise(w->file_mmap, w->read_filesize, POSIX_MADV_NORMAL);
     w->file_mmap = (char*)manager->allocate(w->read_filesize);
-    read(fd, w->file_mmap, w->read_filesize);
+    int read_check = read(fd, w->file_mmap, (long)w->read_filesize);
+    if (read_check == -1) {
+        fprintf(stderr,"Can't Read file\n");
+        perror(NULL);
+        exit(0);
+    }
 
     if (w->file_mmap == (caddr_t)-1) {
         fprintf(stderr,"Can't mmap file\n");