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50b94ef9fc
TEST=build VM Closes: https://github.com/dart-lang/sdk/pull/50862 GitOrigin-RevId: ae54b37666f70f670ee3af11c984c7e9a7e9da26 Change-Id: I459fda0439a1cd368f488a70d84ee6bb915e60bb Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/277761 Commit-Queue: Martin Kustermann <kustermann@google.com> Reviewed-by: Daco Harkes <dacoharkes@google.com> Reviewed-by: Martin Kustermann <kustermann@google.com>
54 lines
1.8 KiB
C++
54 lines
1.8 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 RUNTIME_BIN_FDUTILS_H_
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#define RUNTIME_BIN_FDUTILS_H_
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#include "bin/builtin.h"
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#include "platform/globals.h"
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namespace dart {
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namespace bin {
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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 occurs 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 occurs 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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// Closes fd without modifying errno.
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static void SaveErrorAndClose(intptr_t fd);
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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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} // namespace bin
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} // namespace dart
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#endif // RUNTIME_BIN_FDUTILS_H_
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