src: default to stream=stderr in handle printer (#4161)

Make printing handles from gdb a little easier because it doesn't always
know how to locate the stdout or stderr globals from libc

src: default to stream=stderr in handle printer (#4161)

Make printing handles from gdb a little easier because it doesn't always
know how to locate the stdout or stderr globals from libc.

With this commit `call uv_print_all_handles(0, 0)` prints the handles
from the default loop to stderr.

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unix,win: replace QUEUE with struct uv__queue (#4022)

Recent versions of gcc have started emitting warnings about the liberal
type casting inside the QUEUE macros. Although the warnings

unix,win: replace QUEUE with struct uv__queue (#4022)

Recent versions of gcc have started emitting warnings about the liberal
type casting inside the QUEUE macros. Although the warnings are false
positives, let's use them as the impetus to switch to a type-safer and
arguably cleaner approach.

Fixes: https://github.com/libuv/libuv/issues/4019

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src: switch to use C11 atomics where available (#3950)

Switch all code in unix/ to use C11 atomics directly.

Change uv_library_shutdown() to use an exchange instead of load/store.

src: switch to use C11 atomics where available (#3950)

Switch all code in unix/ to use C11 atomics directly.

Change uv_library_shutdown() to use an exchange instead of load/store.

Unfortunately MSVC only started supporting C11 atomics in VS2022 version
17.5 Preview 2 as experimental. So resort to using the Interlocked API.

Ref: https://devblogs.microsoft.com/cppblog/c11-atomics-in-visual-studio-2022-version-17-5-preview-2/
Fixes: https://github.com/libuv/libuv/issues/3948

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misc: extend getpw to take uid as an argument (#3523)

File system operations may return uid and gid values, which we may want
to pretty-print. We already have the code for getting inform

misc: extend getpw to take uid as an argument (#3523)

File system operations may return uid and gid values, which we may want
to pretty-print. We already have the code for getting information for
the current user, so just need to add a parameter to make it exposed for
every user. We expose information about groups in a similar manner also.

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linux: handle cpu hotplugging in uv_cpu_info() (#3861)

On Linux, CPUs can come online or go offline while uv_cpu_info() is busy
gathering data. Change uv_cpu_info() in the following ways

linux: handle cpu hotplugging in uv_cpu_info() (#3861)

On Linux, CPUs can come online or go offline while uv_cpu_info() is busy
gathering data. Change uv_cpu_info() in the following ways:

1. Learn online CPUs from /proc/stat

2. Get the model name from /proc/cpuinfo when it has a matching CPU,
or default to "unknown"

3. Get speed from /sys/devices/system/cpu/cpu%u/cpufreq/scaling_cur_freq
when it exists, or default to 0

Before this commit, libuv read the speed from /proc/cpuinfo but that
reports the base frequency, not the actual frequency. My system has
two cores running permanently at 3.6 GHz but libuv thought all 12 ran
at 2.2 GHz.

Fixes: https://github.com/libuv/libuv/issues/2351
Fixes: https://github.com/libuv/libuv/issues/3858

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src: add new metrics APIs (#3749)

The following metrics are now always recorded and available via the new
uv_metrics_info() API.

* loop_count: Number of event loop iterations.

src: add new metrics APIs (#3749)

The following metrics are now always recorded and available via the new
uv_metrics_info() API.

* loop_count: Number of event loop iterations.
* events: Total number of events processed by the event handler.
* events_waiting: Total number of events waiting in the event queue when
the event provider request was made.

Benchmarking has shown no noticeable impact recording these metrics.

PR-URL: https://github.com/libuv/libuv/pull/3749

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unix,win: fix memory leak in uv_fs_scandir() (#3760)

uv_fs_scandir() leaked an entry when you called it on a directory with
a single entry _and_ you didn't run the iterator until UV_EOF.

unix,win: fix memory leak in uv_fs_scandir() (#3760)

uv_fs_scandir() leaked an entry when you called it on a directory with
a single entry _and_ you didn't run the iterator until UV_EOF.

Fixes: https://github.com/libuv/libuv/issues/3748

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tcp,pipe: fail `bind` or `listen` after `close` (#3641)

Return `UV_EINVAL` in `bind` and `listen` when `handle` is
`UV_HANDLE_CLOSING` or `UV_HANDLE_CLOSED`.

Fixes: https://gith

tcp,pipe: fail `bind` or `listen` after `close` (#3641)

Return `UV_EINVAL` in `bind` and `listen` when `handle` is
`UV_HANDLE_CLOSING` or `UV_HANDLE_CLOSED`.

Fixes: https://github.com/libuv/libuv/issues/3503

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zos: use destructor for uv__threadpool_cleanup() (#3376)

On z/OS, instead of calling the uv__threadpool_cleanup() function from
inside uv_library_shutdown(), the destructor attribute mus

zos: use destructor for uv__threadpool_cleanup() (#3376)

On z/OS, instead of calling the uv__threadpool_cleanup() function from
inside uv_library_shutdown(), the destructor attribute must be used;
otherwise, tests will fail with exit code 1 and no output. Additionally,
post() does not need to be called when the destructor attribute is used.

Also adds uv__os390_cleanup() function to clean System V message queue
on z/OS.

Co-authored-by: Igor Todorovski <itodorov@ca.ibm.com>
Co-authored-by: Gaby Baghdadi <baghdadi@ca.ibm.com>

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unix,win: add uv_ip_name to get name from sockaddr (#3368)

uv_ip_name is a kind of wrapper of uv_ip4_name and uv_ip6_name
which can be used after getaddrinfo to get the IP name directly

unix,win: add uv_ip_name to get name from sockaddr (#3368)

uv_ip_name is a kind of wrapper of uv_ip4_name and uv_ip6_name
which can be used after getaddrinfo to get the IP name directly
from addrinfo.ai_addr.

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cleanup,win: Remove _WIN32 guards on threadpool

Fixes: https://github.com/libuv/libuv/issues/2980
Refs: https://github.com/nodejs/node/pull/35021
Reviewed-By: Ben Noordhuis <info@bno

cleanup,win: Remove _WIN32 guards on threadpool

Fixes: https://github.com/libuv/libuv/issues/2980
Refs: https://github.com/nodejs/node/pull/35021
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Jameson Nash <vtjnash@gmail.com>

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unix,win: more uv_read_start() argument validation

Return `UV_EINVAL` when one or more arguments are NULL.

Fixes: https://github.com/libuv/help/issues/137
PR-URL: https://github

unix,win: more uv_read_start() argument validation

Return `UV_EINVAL` when one or more arguments are NULL.

Fixes: https://github.com/libuv/help/issues/137
PR-URL: https://github.com/libuv/libuv/pull/2795
Reviewed-By: Jameson Nash <vtjnash@gmail.com>
Reviewed-By: Santiago Gimeno <santiago.gimeno@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Bartosz Sosnowski <bartosz@janeasystems.com>

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unix,win: harmonize uv_read_start() error handling

The behavior of `uv_read_start()` when the handle is closing or already
busy reading wasn't consistent across platforms. Now it is.

unix,win: harmonize uv_read_start() error handling

The behavior of `uv_read_start()` when the handle is closing or already
busy reading wasn't consistent across platforms. Now it is.

Fixes: https://github.com/libuv/help/issues/137
PR-URL: https://github.com/libuv/libuv/pull/2795
Reviewed-By: Jameson Nash <vtjnash@gmail.com>
Reviewed-By: Santiago Gimeno <santiago.gimeno@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Bartosz Sosnowski <bartosz@janeasystems.com>

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core: add API to measure event loop idle time

The API addition `uv_metrics_idle_time()` is a thread safe call that
allows the user to retrieve the amount of time the event loop has spent

core: add API to measure event loop idle time

The API addition `uv_metrics_idle_time()` is a thread safe call that
allows the user to retrieve the amount of time the event loop has spent
in the kernel's event provider (i.e. poll). It was done this way to
allow retrieving this value without needing to interrupt the execution
of the event loop. This option can be enabled by passing
`UV_METRICS_IDLE_TIME` to `uv_loop_configure()`.

One important aspect of this change is, when enabled, to always first
call the event provider with a `timeout == 0`. This allows libuv to know
whether any events were waiting in the event queue when the event
provider was called. The importance of this is because libuv is tracking
the amount of "idle time", not "poll time". Thus the provider entry time
is not recorded when `timeout == 0` (the event provider never idles in
this case).

While this does add a small amount of overhead, when enabled, but the
overhead decreases when the event loop has a heavier load. This is
because poll events will be waiting when the event provider is called.
Thus never actually recording the provider entry time.

Checking if `uv_loop_t` is configured with `UV_METRICS_IDLE_TIME` always
happens in `uv__metrics_set_provider_entry_time()` and
`uv__metrics_update_idle_time()`. Making the conditional logic wrapping
each call simpler and allows for instrumentation to always hook into
those two function calls.

Rather than placing the fields directly on `uv__loop_internal_fields_t`
add the struct `uv__loop_metrics_t` as a location for future metrics API
additions.

Tests and additional documentation has been included.

PR-URL: https://github.com/libuv/libuv/pull/2725
Reviewed-By: Fedor Indutny <fedor.indutny@gmail.com>
Reviewed-By: Santiago Gimeno <santiago.gimeno@gmail.com>
Reviewed-By: Jameson Nash <vtjnash@gmail.com>

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unix: use relaxed loads/stores for feature checks

Make ThreadSanitizer stop complaining about the static variables that
libuv uses to record the presence (or lack) of system calls and ot

unix: use relaxed loads/stores for feature checks

Make ThreadSanitizer stop complaining about the static variables that
libuv uses to record the presence (or lack) of system calls and other
kernel features.

Fixes: https://github.com/libuv/libuv/issues/2884
PR-URL: https://github.com/libuv/libuv/pull/2886
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Jameson Nash <vtjnash@gmail.com>

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win: make uv_udp_init_ex() accept UV_UDP_RECVMMSG

Commit 5736658b ("udp: add flag to enable recvmmsg(2) explicitly") added
the flag but didn't update the validation logic in src/win/udp.

win: make uv_udp_init_ex() accept UV_UDP_RECVMMSG

Commit 5736658b ("udp: add flag to enable recvmmsg(2) explicitly") added
the flag but didn't update the validation logic in src/win/udp.c.

This commit moves the validation logic to src/uv-common.c. The flag is
now accepted as a no-op on Windows.

Fixes: https://github.com/libuv/libuv/issues/2806
PR-URL: https://github.com/libuv/libuv/pull/2809
Reviewed-By: Bartosz Sosnowski <bartosz@janeasystems.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Santiago Gimeno <santiago.gimeno@gmail.com>

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unix,win: add uv_library_shutdown()

Make it possible to explicitly tell libuv to release any resources
it's still holding onto (memory, threads, file descriptors, etc.)

Before t

unix,win: add uv_library_shutdown()

Make it possible to explicitly tell libuv to release any resources
it's still holding onto (memory, threads, file descriptors, etc.)

Before this commit, cleanup was performed in various destructors.
This commit centralizes the cleanup logic, enabling the addition of
`uv_library_shutdown()`, but maintains the current observable behavior
of cleaning up when libuv is unloaded by means of `dlclose(3)`.

Fixes: https://github.com/libuv/libuv/issues/2763
PR-URL: https://github.com/libuv/libuv/pull/2764
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Richard Lau <riclau@uk.ibm.com>
Reviewed-By: Saúl Ibarra Corretgé <saghul@gmail.com>

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src: add uv__reallocf()

Modeled after FreeBSD's `reallocf(3)`: a version of `realloc(3)` that
frees the memory when reallocation fails, simplifying error handling in
many cases.

src: add uv__reallocf()

Modeled after FreeBSD's `reallocf(3)`: a version of `realloc(3)` that
frees the memory when reallocation fails, simplifying error handling in
many cases.

PR-URL: https://github.com/libuv/libuv/pull/2735
Reviewed-By: Santiago Gimeno <santiago.gimeno@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Saúl Ibarra Corretgé <saghul@gmail.com>
Reviewed-By: Richard Lau <riclau@uk.ibm.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>

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unix: set sin_len and sin6_len

FreeBSD defines `sin_len` and `sin6_len` inside `sockaddr_in` and
`sockaddr_in6`. `sockaddr`s come from `getsockname` and `uv_ip4_addr`
will differ in

unix: set sin_len and sin6_len

FreeBSD defines `sin_len` and `sin6_len` inside `sockaddr_in` and
`sockaddr_in6`. `sockaddr`s come from `getsockname` and `uv_ip4_addr`
will differ in the first byte if libuv doesn't set `sin_len` correctly.

PR-URL: https://github.com/libuv/libuv/pull/2492
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Santiago Gimeno <santiago.gimeno@gmail.com>
Reviewed-By: Saúl Ibarra Corretgé <s@saghul.net>

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src: move uv_free_cpu_info to uv-common.c

PR-URL: https://github.com/libuv/libuv/pull/2433
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Colin Ihrig <cjihrig@gmail.co

src: move uv_free_cpu_info to uv-common.c

PR-URL: https://github.com/libuv/libuv/pull/2433
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Saúl Ibarra Corretgé <saghul@gmail.com>

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unix,win: add ability to retrieve all env variables

Fixes: https://github.com/libuv/libuv/issues/2400

PR-URL: https://github.com/libuv/libuv/pull/2404
Reviewed-By: Anna Hennings

unix,win: add ability to retrieve all env variables

Fixes: https://github.com/libuv/libuv/issues/2400

PR-URL: https://github.com/libuv/libuv/pull/2404
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Santiago Gimeno <santiago.gimeno@gmail.com>

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unix: support sockaddr_un in uv_udp_send()

PR-URL: https://github.com/libuv/libuv/pull/2220
Reviewed-By: Santiago Gimeno <santiago.gimeno@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig

unix: support sockaddr_un in uv_udp_send()

PR-URL: https://github.com/libuv/libuv/pull/2220
Reviewed-By: Santiago Gimeno <santiago.gimeno@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Saúl Ibarra Corretgé <saghul@gmail.com>
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>

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unix,win: add uv_fs_{open,read,close}dir()

Co-authored-by: Julien Gilli <jgilli@nodejs.org>
Co-authored-by: Jeremy Whitlock <jwhitlock@apache.org>
Reviewed-By: Ben Noordhuis <info@bn

unix,win: add uv_fs_{open,read,close}dir()

Co-authored-by: Julien Gilli <jgilli@nodejs.org>
Co-authored-by: Jeremy Whitlock <jwhitlock@apache.org>
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
PR-URL: https://github.com/libuv/libuv/pull/2057
Refs: https://github.com/joyent/libuv/issues/1430
Refs: https://github.com/joyent/libuv/pull/1521
Refs: https://github.com/joyent/libuv/pull/1574
Refs: https://github.com/libuv/libuv/pull/175
Refs: https://github.com/nodejs/node/issues/583
Refs: https://github.com/libuv/libuv/pull/416
Refs: https://github.com/libuv/libuv/issues/170

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udp: add support for UDP connected sockets

Add two new methods:

`uv_udp_connect()` to connect / disconnect an UDP handle.
`uv_udp_getpeername()` to get the remote peer address o

udp: add support for UDP connected sockets

Add two new methods:

`uv_udp_connect()` to connect / disconnect an UDP handle.
`uv_udp_getpeername()` to get the remote peer address of a connected UDP
handle.

Modify `uv_udp_send()` and `uv_udp_try_send()` to accept a `NULL` `addr`
to send messages over an "UDP connection".

Refs: https://github.com/libuv/leps/pull/10
PR-URL: https://github.com/libuv/libuv/pull/1872
Backport-PR-URL: https://github.com/libuv/libuv/pull/2217
Reviewed-By: Saúl Ibarra Corretgé <saghul@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>

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src: fill sockaddr_in6.sin6_len when it's defined

As some calls in some platforms require.

PR-URL: https://github.com/libuv/libuv/pull/2189
Reviewed-By: Saúl Ibarra Corretgé <sa

src: fill sockaddr_in6.sin6_len when it's defined

As some calls in some platforms require.

PR-URL: https://github.com/libuv/libuv/pull/2189
Reviewed-By: Saúl Ibarra Corretgé <saghul@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>

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