cygwin: implement support for cygwin and msys2

Cygwin and MSYS2 are POSIX layers implemented on top of Windows.
Use our POSIX `poll(2)` implementation of our poll abstraction.
For mo

cygwin: implement support for cygwin and msys2

Cygwin and MSYS2 are POSIX layers implemented on top of Windows.
Use our POSIX `poll(2)` implementation of our poll abstraction.
For most other components we already have dedicated sources
implementing them in terms of APIs available on Cygwin or
providing non-implementations of components not supported.

This leaves only three components that need Cygwin-specific
implementations:

* uv_uptime: implement using sysinfo
* uv_resident_set_memory: add a placeholder returning UV_ENOSYS
* uv_cpu_info: add a placeholder returning UV_ENOSYS

Update our test suite to account for features not available
due to Cygwin platform limitations or our placeholders.

PR-URL: https://github.com/libuv/libuv/pull/1312
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Santiago Gimeno <santiago.gimeno@gmail.com>

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test: factor out fsevents skip explanation

Factor out a dedicated test macro for use on platforms that
do not support fsevents instead of duplicating the os390
platform condition and

test: factor out fsevents skip explanation

Factor out a dedicated test macro for use on platforms that
do not support fsevents instead of duplicating the os390
platform condition and explanation text.

PR-URL: https://github.com/libuv/libuv/pull/1312
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Santiago Gimeno <santiago.gimeno@gmail.com>

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test: remove unused RETURN_TODO macro

PR-URL: https://github.com/libuv/libuv/pull/898
Reviewed-By: Saúl Ibarra Corretgé <saghul@gmail.com>

test: assume no IPv6 if interfaces cannot be listed

PR-URL: https://github.com/libuv/libuv/pull/724
Reviewed-By: Saúl Ibarra Corretgé <saghul@gmail.com>

test: use uv_loop_close and assert its result

uv_loop_delete is considered deprecated.

PR-URL: https://github.com/libuv/libuv/pull/696
Reviewed-By: Saúl Ibarra Corretgé <saghul@

test: use uv_loop_close and assert its result

uv_loop_delete is considered deprecated.

PR-URL: https://github.com/libuv/libuv/pull/696
Reviewed-By: Saúl Ibarra Corretgé <saghul@gmail.com>

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win: do not read more from stream than available

On Windows the pipe implementation could read more from a stream than
was available and it would create an assertion failure. This chang

win: do not read more from stream than available

On Windows the pipe implementation could read more from a stream than
was available and it would create an assertion failure. This change
will make it so we read the minimum of the available data or the length
of the data.

To test this, I took the existing ipc_send_recv_tcp test and updated it
to do two writes and two read on each side of the pipe since that was the
reproduction recipe used by the reporter. This approach reproduced the
issue on Windows and the committed fix resolved the issue.

Fixes: https://github.com/libuv/libuv/issues/505
PR-URL: https://github.com/libuv/libuv/pull/549
Reviewed-By: Saúl Ibarra Corretgé <saghul@gmail.com>

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win: use the MSVC provided snprintf where possible

PR-URL: https://github.com/libuv/libuv/pull/532
Reviewed-By: Saúl Ibarra Corretgé <saghul@gmail.com>

windows: MSVC 2015 has C99 inline

Prior to MSVC 2015, the standard C99 `inline` keyword was missing,
added a compiler version check and disabled the inline replacement for
MSVC >= 20

windows: MSVC 2015 has C99 inline

Prior to MSVC 2015, the standard C99 `inline` keyword was missing,
added a compiler version check and disabled the inline replacement for
MSVC >= 2015 in test/task.h.

Refs: https://github.com/libuv/libuv/pull/341
PR-URL: https://github.com/libuv/libuv/pull/369
Reviewed-By: Saúl Ibarra Corretgé <saghul@gmail.com>

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windows: MSVC 2015 has snprintf()

Prior to MSVC 2015, there was no standard compliant snprintf(), added a
compiler version check and disabled the snprintf() replacement for MSVC >=
2

windows: MSVC 2015 has snprintf()

Prior to MSVC 2015, there was no standard compliant snprintf(), added a
compiler version check and disabled the snprintf() replacement for MSVC >=
2015 in test/task.h.

PR-URL: https://github.com/libuv/libuv/pull/341
Reviewed-By: Saúl Ibarra Corretgé <saghul@gmail.com>

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windows: define snprintf replacement as inline instead of static

The MSVC compiler does not accept static methods defined in headers,
when linking against a shared library. The snprintf

windows: define snprintf replacement as inline instead of static

The MSVC compiler does not accept static methods defined in headers,
when linking against a shared library. The snprintf replacement
function used for windows, is now an inline function.

PR-URL: https://github.com/libuv/libuv/pull/329
Reviewed-By: Saúl Ibarra Corretgé <saghul@gmail.com>

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test: remove LOG and LOGF variadic macros

Initial patch by @simar7, thanks!

PR-URL: https://github.com/libuv/libuv/pull/313
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>

test: skip ipv6 tests when ipv6 is not supported

To verify on Linux, run `sudo sysctl net.ipv6.conf.all.disable_ipv6=1`
before the test suite.

Fixes: https://github.com/libuv/li

test: skip ipv6 tests when ipv6 is not supported

To verify on Linux, run `sudo sysctl net.ipv6.conf.all.disable_ipv6=1`
before the test suite.

Fixes: https://github.com/libuv/libuv/issues/10
PR-URL: https://github.com/libuv/libuv/pull/92
Reviewed-By: Saúl Ibarra Corretgé <saghul@gmail.com>

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test: silence some Clang warnings

They only show up on OSX for some reason, though.

PR-URL: https://github.com/libuv/libuv/pull/67
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>

test: fix compiation warning

-Wunused-function would kick in because of the close_loop function,
but there tests and benchmarks which actually don't use any loop.

test: make sure all handles in the loop are closed

unix, windows: add uv_pipe_getsockname

test: test fsevents error reporting

Create a lot of `FSEventStream`s to make `FSEventStreamStart()` fail.
Fetch the error code and verify that it is correct.

test: remove replacement snprintf for mingw

Mingw has a proper definition of snprintf.

test: add windows-only snprintf() function

Should fix the build after 96f32a2 inadvertently broke it.

There is no snprintf() on Windows because, hey, it's a C99 addition
and the

test: add windows-only snprintf() function

Should fix the build after 96f32a2 inadvertently broke it.

There is no snprintf() on Windows because, hey, it's a C99 addition
and the people from Redmond, WA are still firmly stuck in 1989.

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build: switch to autotools

Switch to the build tool everyone loves to hate. The Makefile has
served us well over the years but it's been acquiring more and more
features that autoto

build: switch to autotools

Switch to the build tool everyone loves to hate. The Makefile has
served us well over the years but it's been acquiring more and more
features that autotools gives us for free, like easy static+shared
library building, sane install targets, and so on.

This commit drops MinGW support. If there is demand for it, we'll
re-add it.

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test: don't use S_IREAD and S_IWRITE

They're BSD-isms and obsolete ones at that. Replace with S_IRUSR and
S_IWUSR. Alias as _S_IREAD and _S_IWRITE on Windows because the '90s
never e

test: don't use S_IREAD and S_IWRITE

They're BSD-isms and obsolete ones at that. Replace with S_IRUSR and
S_IWUSR. Alias as _S_IREAD and _S_IWRITE on Windows because the '90s
never ended in Redmond, WA.

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test: add RETURN_SKIP and RETURN_TODO macros

Added two new flags to identify tests that are intentionally ignored
(usually because we don't want to implement the tested functionality

test: add RETURN_SKIP and RETURN_TODO macros

Added two new flags to identify tests that are intentionally ignored
(usually because we don't want to implement the tested functionality
on current platform) and test serving as TODO list (usually indicating
that the tested functionality should be implemented on current plaform
in the near future.)

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test, bench: ANSI-fy function prototypes

Replace `void f()` with `void f(void)`; the former means "a function
that takes any number of arguments, including none" while the latter
is

test, bench: ANSI-fy function prototypes

Replace `void f()` with `void f(void)`; the former means "a function
that takes any number of arguments, including none" while the latter
is what is actually intended: a function taking no arguments.

The first form also isn't strictly conforming ANSI/ISO C.

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win: support compilation with Visual Studio 2008

test: move loop cleanup code to the individual tests