chrome/common/ipc_maybe.h - Issue 21485: Bitmap transport

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Side by Side Diff: chrome/common/ipc_maybe.h

Issue 21485: Bitmap transport (Closed)

Patch Set: Fix some mac crashes Created 11 years, 10 months ago

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	1 #ifndef CHROME_COMMON_MAYBE_H_

	2 #define CHROME_COMMON_MAYBE_H_

	3

	4 namespace IPC {

	5

	6 // The Maybe type can be used to avoid serialising a type when it's invalid.

	7 // This is most useful in conjunction with FileDescriptor, as there's no

	8 // possible invalid value which can be serialised (one can type to use -1, but

	9 // the IPC channel will fail). It may also be useful if the invalid value is

	10 // otherwise expensive to serialise.

	11 template<typename A>

	12 struct Maybe {

	13 bool valid;

	14 A value;

	15 };

	16

	17 } // namespace IPC

	18

	19 #endif // CHROME_COMMON_MAYBE_H_

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