kustermann@google.com
6d1cda397c
Without the FD_CLOEXEC, all subprocesses will inherit the open socket file descriptors of the current process due to the default behavior of fork()+exec(). Review URL: https://codereview.chromium.org//11416006 git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@14952 260f80e4-7a28-3924-810f-c04153c831b5
45 lines
1.6 KiB
C++
45 lines
1.6 KiB
C++
// Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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#ifndef BIN_FDUTILS_H_
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#define BIN_FDUTILS_H_
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#include "bin/builtin.h"
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#include "platform/globals.h"
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class FDUtils {
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public:
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static bool SetCloseOnExec(intptr_t fd);
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static bool SetNonBlocking(intptr_t fd);
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static bool SetBlocking(intptr_t fd);
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// Checks whether the file descriptor is blocking. If the function
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// returns true the value pointed to by is_blocking will be set to
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// the blocking state of the file descriptor. If the function
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// returns false the system call for checking the file descriptor
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// failed and the value pointed to by is_blocking is not modified.
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static bool IsBlocking(intptr_t fd, bool* is_blocking);
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static intptr_t AvailableBytes(intptr_t fd);
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// Reads the requested number of bytes from a file descriptor. This
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// function will only return on short reads if an error occours in
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// which case it returns -1 and errno is still valid. The file
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// descriptor must be in blocking mode.
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static ssize_t ReadFromBlocking(int fd, void* buffer, size_t count);
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// Writes the requested number of bytes to a file descriptor. This
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// function will only return on short writes if an error occours in
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// which case it returns -1 and errno is still valid. The file
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// descriptor must be in blocking mode.
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static ssize_t WriteToBlocking(int fd, const void* buffer, size_t count);
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private:
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DISALLOW_ALLOCATION();
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DISALLOW_IMPLICIT_CONSTRUCTORS(FDUtils);
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};
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#endif // BIN_FDUTILS_H_
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