ea336061c2
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The PR introduces the `platform.Select()` API, wrapping `select(2)` on POSIX and emulated in some cases on Windows. RATIONALE.md contains a full explanation of the approach followed in `poll_oneoff` to handle Stdin and the other types of file descriptors, and the clock subscriptions. It also introduces an abstraction (`StdioFilePoller`) to allow the simulation of different scenarios (waiting for input, input ready, timeout expired, etc.) when unit-testing interactive input. This closes #1317. Signed-off-by: Edoardo Vacchi <evacchi@users.noreply.github.com>
24 lines
515 B
Go
24 lines
515 B
Go
package platform
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// Set adds the given fd to the set.
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func (f *FdSet) Set(fd int) {
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f.Bits[fd/nfdbits] |= (1 << (uintptr(fd) % nfdbits))
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}
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// Clear removes the given fd from the set.
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func (f *FdSet) Clear(fd int) {
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f.Bits[fd/nfdbits] &^= (1 << (uintptr(fd) % nfdbits))
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}
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// IsSet returns true when fd is in the set.
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func (f *FdSet) IsSet(fd int) bool {
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return f.Bits[fd/nfdbits]&(1<<(uintptr(fd)%nfdbits)) != 0
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}
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// Zero clears the set.
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func (f *FdSet) Zero() {
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for i := range f.Bits {
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f.Bits[i] = 0
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}
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}
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