POSIX: Add a macro for handling EINTR.

base/debug_util_posix.cc

 // Copyright (c) 2006-2009 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "build/build_config.h"
 #include "base/debug_util.h"
 
 #include <errno.h>
 #include <execinfo.h>
 #include <fcntl.h>
 #include <stdio.h>
 #include <sys/stat.h>
 #include <sys/sysctl.h>
 #include <sys/types.h>
 #include <unistd.h>
 
 #include "base/basictypes.h"
+#include "base/eintr_wrappers.h"
 #include "base/logging.h"
 #include "base/scoped_ptr.h"
 #include "base/string_piece.h"
 
 // static
 bool DebugUtil::SpawnDebuggerOnProcess(unsigned /* process_id */) {
   NOTIMPLEMENTED();
   return false;
 }
 
@@ skipping 50 matching lines @@
 bool DebugUtil::BeingDebugged() {
   int status_fd = open("/proc/self/status", O_RDONLY);
   if (status_fd == -1)
     return false;
 
   // We assume our line will be in the first 1024 characters and that we can
   // read this much all at once.  In practice this will generally be true.
   // This simplifies and speeds up things considerably.
   char buf[1024];
 
-  ssize_t num_read = read(status_fd, buf, sizeof(buf));
-  close(status_fd);
+  ssize_t num_read = HANDLE_EINTR(read(status_fd, buf, sizeof(buf)));
+  HANDLE_EINTR(close(status_fd));
 
   if (num_read <= 0)
     return false;
 
   StringPiece status(buf, num_read);
   StringPiece tracer("TracerPid:\t");
 
   StringPiece::size_type pid_index = status.find(tracer);
   if (pid_index == StringPiece::npos)
     return false;
@@ skipping 44 matching lines @@
     for (size_t i = 0; i < trace_.size(); ++i) {
       (*os) << "\t" << trace_[i] << "\n";
     }
   } else {
     (*os) << "Backtrace:\n";
     for (size_t i = 0; i < trace_.size(); ++i) {
       (*os) << "\t" << trace_symbols.get()[i] << "\n";
     }
   }
 }