The conversion of the naonseconds to Mach ticks in multiples of Mach
timebase units alters the time. This would fail on ASi where mach ticks
are not synonymous with nanoseconds.
Swap the parameters in `assertEqual` to improve diagnostics on failure.
This now prints as:
```
stdout>>> expected: -431 (of type Swift.int)
stdout>>> actual: -11 (of type Swift.int)
```
The build scripts assume Android cross-compilation using the NDK, so avoid
that configuration if building on an Android host. Fix or disable some tests,
and don't install a glibc.modulemap without a native sysroot prefix.
1) Enable tests that use `import Dispatch` on Linux. Add substitution
`%import-libdispatch` that needs to be used for all cross-platform
tests (i.e., tests that are intended to be run on other platforms
than Darwin) that do `import Dispatch` or enable thread sanitizer.
2) Make sure as many existing Dispatch and TSan tests as possible run on
Linux. Mark tests that would require substantial work with
`UNSUPPORTED: OS=linux-gnu`.
3) Add integration-style Swift test that shows that TSan finds a simple
race when using `Dispatch.async` incorrectly. A more complete test
suite for TSan's libdispatch support lives on the LLVM/compiler-rt
side.
rdar://problem/49177535
The lit feature `objc_interop` is used as a proxy for the availability
of libdispatch and Foundation.
Although we don't support Obj-C on non-Apple platforms, we support
libdispatch and Foundation. Let's break up `objc_interop` into
finer-grained categories so we can run more tests on non-Apple
platforms.
This patch adds lit features `libdispatch` and `foundation` (currently
only enabled on Apple platforms) and removes the `objc_interop`
dependency from libdispatch tests.
This converts the instances of the pattern for which we have a proper
substitution in lit. This will make it easier to replace it
appropriately with Windows equivalents.
This decreases total testing time by over a minute on my old Mac Pro.
It probably has much less effect on systems with fewer cores, but shouldn't
be any worse there.
Swift SVN r22745
