test: switch to new-style ASSERT_EQ macros (#4159)

Switch from old-style ASSERT macro to new-style ASSERT_EQ,... macros.

Using new-style macros makes it easier to debug test failure

test: switch to new-style ASSERT_EQ macros (#4159)

Switch from old-style ASSERT macro to new-style ASSERT_EQ,... macros.

Using new-style macros makes it easier to debug test failures

Fixes: https://github.com/libuv/libuv/issues/2974

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test: silence more valgrind warnings (#3917)

Pass the loop to MAKE_VALGRIND_HAPPY() so it's explicit on which loop
needs to be cleaned up. Since it asserts on uv_loop_close(), need to

test: silence more valgrind warnings (#3917)

Pass the loop to MAKE_VALGRIND_HAPPY() so it's explicit on which loop
needs to be cleaned up. Since it asserts on uv_loop_close(), need to
remove a couple of those that were being done before the call.

Cleanup where loop was assigned, so the entire test either uses loop or
uv_default_loop(). Not both.

Also take care of any reqs that may have been left uncleaned.

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test: separate some static variables by test cases (#3567)

test: move to ASSERT_NULL and ASSERT_NOT_NULL test macros

Moving to new style test macros will make debugging easier in case
of test failure and improve redability. This commit will repl

test: move to ASSERT_NULL and ASSERT_NOT_NULL test macros

Moving to new style test macros will make debugging easier in case
of test failure and improve redability. This commit will replace all
ASSERT macros matching the statement:
`ASSERT(identifier (== or !=) value);`
to:
`ASSERT_(NOT_)NULL(identifier);`

Refs: https://github.com/libuv/libuv/issues/2974
PR-URL: https://github.com/libuv/libuv/pull/3081
Reviewed-By: Santiago Gimeno <santiago.gimeno@gmail.com>

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unix, win: add send_queue_size and send_queue_count to uv_udp_t

This functionality is present in stream and uv_udp_t has a queue
as well so it makes sense for udp to have a send_write_si

unix, win: add send_queue_size and send_queue_count to uv_udp_t

This functionality is present in stream and uv_udp_t has a queue
as well so it makes sense for udp to have a send_write_size.
Since udp sends entire messages atomically, the send_queue_count field
lets the user determine how many messages are there left to send.

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tcp: uv_tcp_dualstack()

Explicitly disable/enable dualstack depending on presence of flag set by
uv_tcp_dualstack() function.

include: merge uv_udp_send and uv_udp_send6

Merge uv_udp_send6() into uv_udp_send(). uv_udp_send() now takes a
const struct sockaddr*.

include: merge uv_udp_bind and uv_udp_bind6

Merge uv_udp_bind6() into uv_udp_bind(). uv_udp_bind() now takes a
const struct sockaddr*.

include: merge uv_tcp_connect and uv_tcp_connect6

Merge uv_tcp_connect6() into uv_tcp_connect(). uv_tcp_connect() now
takes a const struct sockaddr*.

include: merge uv_tcp_bind and uv_tcp_bind6

Merge uv_tcp_bind6() into uv_tcp_bind(). uv_tcp_bind() now takes a
const struct sockaddr*.

include: uv_udp_send{6} now takes sockaddr_in*

Passing or returning structs as values makes life hard for people that
work with libuv through a foreign function interface. Switch to a

include: uv_udp_send{6} now takes sockaddr_in*

Passing or returning structs as values makes life hard for people that
work with libuv through a foreign function interface. Switch to a
pointer-based approach.

Fixes #684.

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include: uv_udp_bind{6} now takes sockaddr_in*

Passing or returning structs as values makes life hard for people that
work with libuv through a foreign function interface. Switch to a

include: uv_udp_bind{6} now takes sockaddr_in*

Passing or returning structs as values makes life hard for people that
work with libuv through a foreign function interface. Switch to a
pointer-based approach.

Fixes #684.

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include: uv_udp_recv_cb now takes const uv_buf_t*

Passing or returning structs as values makes life hard for people that
work with libuv through a foreign function interface. Switch to a

include: uv_udp_recv_cb now takes const uv_buf_t*

Passing or returning structs as values makes life hard for people that
work with libuv through a foreign function interface. Switch to a
pointer-based approach.

Fixes #684.

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include: uv_tcp_connect{6} now takes sockaddr_in*

Passing or returning structs as values makes life hard for people that
work with libuv through a foreign function interface. Switch to a

include: uv_tcp_connect{6} now takes sockaddr_in*

Passing or returning structs as values makes life hard for people that
work with libuv through a foreign function interface. Switch to a
pointer-based approach.

Fixes #684.

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include: uv_tcp_bind{6} now takes sockaddr_in*

Passing or returning structs as values makes life hard for people that
work with libuv through a foreign function interface. Switch to a

include: uv_tcp_bind{6} now takes sockaddr_in*

Passing or returning structs as values makes life hard for people that
work with libuv through a foreign function interface. Switch to a
pointer-based approach.

Fixes #684.

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include: uv_ip[46]_addr now takes sockaddr_in*

Passing or returning structs as values makes life hard for people that
work with libuv through a foreign function interface. Switch to a

include: uv_ip[46]_addr now takes sockaddr_in*

Passing or returning structs as values makes life hard for people that
work with libuv through a foreign function interface. Switch to a
pointer-based approach.

Fixes #684.

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include: uv_read{2}_cb now takes const uv_buf_t*

Passing or returning structs as values makes life hard for people that
work with libuv through a foreign function interface. Switch to a

include: uv_read{2}_cb now takes const uv_buf_t*

Passing or returning structs as values makes life hard for people that
work with libuv through a foreign function interface. Switch to a
pointer-based approach.

Fixes #684.

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include: uv_alloc_cb now takes uv_buf_t*

Passing or returning structs as values makes life hard for people that
work with libuv through a foreign function interface. Switch to a
poin

include: uv_alloc_cb now takes uv_buf_t*

Passing or returning structs as values makes life hard for people that
work with libuv through a foreign function interface. Switch to a
pointer-based approach.

Fixes #684.

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unix, windows: return error codes directly

This commit changes the libuv API to return error codes directly rather
than storing them in a loop-global field.

A code snippet like

unix, windows: return error codes directly

This commit changes the libuv API to return error codes directly rather
than storing them in a loop-global field.

A code snippet like this one:

if (uv_foo(loop) < 0) {
uv_err_t err = uv_last_error(loop);
fprintf(stderr, "%s\n", uv_strerror(err));
}

Should be rewritten like this:

int err = uv_foo(loop);
if (err < 0)
fprintf(stderr, "%s\n", uv_strerror(err));

The rationale for this change is that it should make creating bindings
for other languages a lot easier: dealing with struct return values is
painful with most FFIs and often downright buggy.

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unix, windows: rename uv_run2 to uv_run

This changes the prototype of uv_run() from:

int uv_run(uv_loop_t* loop);

To:

int uv_run(uv_loop_t* loop, uv_run_mode m

unix, windows: rename uv_run2 to uv_run

This changes the prototype of uv_run() from:

int uv_run(uv_loop_t* loop);

To:

int uv_run(uv_loop_t* loop, uv_run_mode mode);

Where `mode` is UV_RUN_DEFAULT, UV_RUN_ONCE or UV_RUN_NOWAIT.

Fixes #683.

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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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test: fix type casting style issue

test: move loop cleanup code to the individual tests

test: fix memory leak in test-getsockname.c

Fix typos.