Add sandbox support for process memory limits

sandbox/win/src/job.h

 // Copyright (c) 2010 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.
 
 #ifndef SANDBOX_SRC_JOB_H_
 #define SANDBOX_SRC_JOB_H_
 
 #include "base/basictypes.h"
 #include "sandbox/win/src/restricted_token_utils.h"
 
 namespace sandbox {
 
 // Handles the creation of job objects based on a security profile.
 // Sample usage:
 //   Job job;
 //   job.Init(JOB_LOCKDOWN, NULL);  //no job name
 //   job.AssignProcessToJob(process_handle);
 class Job {
  public:
-  Job() : job_handle_(NULL) { }
+  Job() : job_handle_(NULL), process_memory_limit_(0) { }
 
   ~Job();
 
   // Initializes and creates the job object. The security of the job is based
   // on the security_level parameter.
   // job_name can be NULL if the job is unnamed.
   // If the chosen profile has too many ui restrictions, you can disable some
   // by specifying them in the ui_exceptions parameters.
   // If the function succeeds, the return value is ERROR_SUCCESS. If the
   // function fails, the return value is the win32 error code corresponding to
   // the error.
   DWORD Init(JobLevel security_level,
              const wchar_t* job_name,
              DWORD ui_exceptions);
 
+  DWORD SetProcessMemoryLimit(size_t limit);
+
   // Assigns the process referenced by process_handle to the job.
   // If the function succeeds, the return value is ERROR_SUCCESS. If the
   // function fails, the return value is the win32 error code corresponding to
   // the error.
   DWORD AssignProcessToJob(HANDLE process_handle);
 
   // Grants access to "handle" to the job. All processes in the job can
   // subsequently recognize and use the handle.
   // If the function succeeds, the return value is ERROR_SUCCESS. If the
   // function fails, the return value is the win32 error code corresponding to
   // the error.
   DWORD UserHandleGrantAccess(HANDLE handle);
 
   // Revokes ownership to the job handle and returns it. The destructor of the
   // class won't close the handle when called.
   // If the object is not yet initialized, it returns 0.
   HANDLE Detach();
 
  private:
   // Handle to the job referenced by the object.
   HANDLE job_handle_;
+  // Per-process memory limit for each process in the job.
+  size_t process_memory_limit_;
 
   DISALLOW_COPY_AND_ASSIGN(Job);
 };
 
 }  // namespace sandbox
 
 
 #endif  // SANDBOX_SRC_JOB_H_