Revised CL for customisable logging (replacing printfs).

runtime/bin/file_linux.cc

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "bin/file.h"
 
 #include <errno.h>
 #include <fcntl.h>
 #include <sys/stat.h>
 #include <unistd.h>
 #include <libgen.h>
 
 #include "bin/builtin.h"
+#include "bin/log.h"
 
 class FileHandle {
  public:
   explicit FileHandle(int fd) : fd_(fd) { }
   ~FileHandle() { }
   int fd() const { return fd_; }
   void set_fd(int fd) { fd_ = fd; }
 
  private:
   int fd_;
@@ skipping 11 matching lines @@
 }
 
 
 void File::Close() {
   ASSERT(handle_->fd() >= 0);
   int err = TEMP_FAILURE_RETRY(close(handle_->fd()));
   if (err != 0) {
     const int kBufferSize = 1024;
     char error_message[kBufferSize];
     strerror_r(errno, error_message, kBufferSize);
-    fprintf(stderr, "%s\n", error_message);
+    Log::PrintErr("%s\n", error_message);
   }
   handle_->set_fd(kClosedFd);
 }
 
 
 bool File::IsClosed() {
   return handle_->fd() == kClosedFd;
 }
 
 
@@ skipping 177 matching lines @@
   int result = fstat(fd, &buf);
   if (result == -1) {
     FATAL2("Failed stat on file descriptor %d: %s", fd, strerror(errno));
   }
   if (S_ISCHR(buf.st_mode)) return kTerminal;
   if (S_ISFIFO(buf.st_mode)) return kPipe;
   if (S_ISSOCK(buf.st_mode)) return kSocket;
   if (S_ISREG(buf.st_mode)) return kFile;
   return kOther;
 }