src/share/vm/runtime/os.cpp

rev 2100 : 7017193 Small memory leak in get_stack_bounds // os::create_stack_guard_pages

*** 1290,1294 ****
--- 1290,1325 ----
        result = true;
      }
    }
    return result;
  }
+ 
+ //Read file line by line, if line is longer than bsize,
+ //skip rest of line.
+ int os::get_line_chars(int fd, char* buf, size_t bsize){
+   unsigned int sz,i = 0;
+ 
+   while( (sz=read(fd, &buf[i], 1)) == 1 && i < (bsize-1) && buf[i] != '\n' ) {
+      ++i;
+   }
+ 
+   // whole line was read, kill eol char and return
+   if (buf[i] == '\n'){
+      buf[i] = 0; 
+      return i-1;
+   }
+ 
+   buf[i+1] = 0; 
+ 
+   // EOF reached. if we have characters in buf return 
+   // partially read line and delay eof to next call
+   if (sz != 1) {
+     return (i == 0) ? -1 : i;
+   }
+ 
+   // line is longer than bsize, skip to EOL
+   int ch;
+   while( read(fd, &ch, 1) == 1 && ch != '\n' );
+ 
+   // ignore eof, will catch it next time
+   return i;
+ }
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