Revert "memory: add uv_replace_allocator"

This reverts commit c272f1f1bc0bda625e6441d798c110b4064a6ce2.

The concept will come back to libuv, but it needs some more work.

memory: add uv_replace_allocator

With uv_replace_allocator, it's possible to override the default
memory allocator's malloc and free calls with functions of the user's
choosing. This

memory: add uv_replace_allocator

With uv_replace_allocator, it's possible to override the default
memory allocator's malloc and free calls with functions of the user's
choosing. This allows libuv to interoperate with projects requiring a
custom memory allocator.

Internally, all calls to malloc and free have been replaced with
uv__malloc and uv__free, respectively. The uv__malloc and uv__free
functions call malloc and free unless they have been overridden by a
previous call to uv_replace_allocator.

As part of this change, the special aligned memory allocations
performed in src/win/fs-event.c have been replaced with standard
allocations. The 4-byte alignment being requested in this file was
unnecessary, since standard allocators already guarantee at least an
8-byte alignment.

PR-URL: https://github.com/libuv/libuv/pull/231
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Saúl Ibarra Corretgé <saghul@gmail.com>

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win,unix: move loop functions which have identical implementations

uv_default_loop, uv_loop_new, uv_loop_close, uv_loop_delete

PR-URL: https://github.com/libuv/libuv/pull/144
Re

win,unix: move loop functions which have identical implementations

uv_default_loop, uv_loop_new, uv_loop_close, uv_loop_delete

PR-URL: https://github.com/libuv/libuv/pull/144
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-by: Saúl Ibarra Corretgé <saghul@gmail.com>

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openbsd: fix uv_exepath(smallbuf) UV_EINVAL error

Write as much of the path as possible to the output buffer. Before this
commit, passing in a buffer that was too small to hold the resu

openbsd: fix uv_exepath(smallbuf) UV_EINVAL error

Write as much of the path as possible to the output buffer. Before this
commit, passing in a buffer that was too small to hold the result failed
with a UV_EINVAL error.

PR-URL: https://github.com/libuv/libuv/pull/104
Reviewed-By: Saúl Ibarra Corretgé <saghul@gmail.com>

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unix: make uv_exepath(size=0) return UV_EINVAL

Make the behavior of a call to uv_exepath() with a size argument of zero
consistent with the Windows implementation where it returns UV_EIN

unix: make uv_exepath(size=0) return UV_EINVAL

Make the behavior of a call to uv_exepath() with a size argument of zero
consistent with the Windows implementation where it returns UV_EINVAL.

PR-URL: https://github.com/libuv/libuv/pull/104
Reviewed-By: Saúl Ibarra Corretgé <saghul@gmail.com>

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openbsd: avoid requiring privileges for uv_resident_set_memory

style: remove trailing whitespace

Signed-off-by: Fedor Indutny <fedor@indutny.com>

Merge branch 'v0.10'

Conflicts:
ChangeLog
src/unix/process.c
src/version.c

openbsd: fix obvious bug in uv_cpu_info

`int which[]` should not be static here, as the function itself is
changing it

fix joyent/node#6878

linux: use CLOCK_MONOTONIC_COARSE if available

On some systems, clock_gettime(CLOCK_MONOTONIC) is only serviced from
the vDSO when the __vdso_clock_gettime() wrapper is confident enough

linux: use CLOCK_MONOTONIC_COARSE if available

On some systems, clock_gettime(CLOCK_MONOTONIC) is only serviced from
the vDSO when the __vdso_clock_gettime() wrapper is confident enough
that the vDSO timestamp is highly accurate. When in doubt, it falls
back to making a traditional SYS_clock_gettime system call with all
the overhead that entails.

While a commendable approach, it's overkill for our purposes because we
don't usually need high precision time. That's why this commit switches
to CLOCK_MONOTONIC_COARSE for low-precision timekeeping, provided said
clock has at least a one millisecond resolution.

This change should eliminate the system call on almost all systems,
including virtualized ones, provided the kernel is >= 2.6.32 and glibc
is new enough to find and parse the vDSO.

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unix, windows: add MAC to uv_interface_addresses()

Make uv_interface_addresses() return the MAC address as a 48 bits
binary value in the phys_addr field of the uv_interface_address_t

unix, windows: add MAC to uv_interface_addresses()

Make uv_interface_addresses() return the MAC address as a 48 bits
binary value in the phys_addr field of the uv_interface_address_t
struct.

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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: use uv__hrtime() internally

This commit renames the various uv_hrtime() implementations to uv__hrtime().

Libuv uses the high-res timer internally in performance-critical code

unix: use uv__hrtime() internally

This commit renames the various uv_hrtime() implementations to uv__hrtime().

Libuv uses the high-res timer internally in performance-critical code paths.
Calling the non-public version avoids going through the PLT when libuv is
compiled as a shared object.

The exported uv_hrtime() now has a single definition in src/unix/core.c that
calls uv__hrtime().

A future optimization is to lift the uv__hrtime() declarations into header
files so they can be inlined at the call sites. Then again, linking with -flto
should accomplish the same thing.

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unix: remove dependency on libev

Merge branch 'v0.8'

unix: fix integer overflow in uv_hrtime

Conversion to nanoseconds was overflowing with 32-bit builds.

unix: move platform init out of loop.c

Move platform-specific initialization logic out of loop.c and into the
platform files (freebsd.c, sunos.c, etc).

unix: undo changes to uv_set_process_title()

It's making node.js crash when run as root. Backtrace:

(gdb) bt
#0 0x00007fff856e3ff9 in __findenv ()
#1 0x00007fff856e4

unix: undo changes to uv_set_process_title()

It's making node.js crash when run as root. Backtrace:

(gdb) bt
#0 0x00007fff856e3ff9 in __findenv ()
#1 0x00007fff856e404c in getenv ()
#2 0x000000010004c850 in loop_init (loop=0x10045a792, flags=8) at ev.c:1707
#3 0x000000010004cb3b in ev_backend [inlined] () at /Users/tjfontaine/Development/node/deps/uv/src/unix/ev/ev.c:2090
#4 0x000000010004cb3b in ev_default_loop (flags=1606417108) at ev.c:2092
#5 0x000000010004e5c6 in uv__loop_init (loop=0x10066e330, default_loop=1) at loop.c:52
#6 0x0000000100044367 in uv_default_loop () at core.c:196
#7 0x0000000100004625 in node::Init (argc=1606417456, argv=0x100b0f490) at node.cc:2761
#8 0x000000010000797d in node::Start (argc=1606417600, argv=0x0) at node.cc:2888
#9 0x0000000100000ca4 in start ()

This reverts commits:

b49d6f7 unix: fix uv_set_process_title()
a9f6f06 unix: fix format string vulnerability in freebsd.c
a87abc7 unix: avoid buffer overflow in proctitle.c
dc97d44 unix: move uv_set_process_title() to proctitle.c

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unix: move uv_set_process_title() to proctitle.c

Use hijacking argv array to change process' title. It seems to be working fine
on almost every platform (at least it should not break any

unix: move uv_set_process_title() to proctitle.c

Use hijacking argv array to change process' title. It seems to be working fine
on almost every platform (at least it should not break anything as it's used in
nginx in a similar way).

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unix, test: make NANOSEC a 64 bits unsigned int

Avoids accidental overflow / truncation when it's used in 32 bits arithmetic.

unix: fix compiler warning

Fix warning "for loop initial declaration used outside C99 mode" on openbsd.

Fix libuv on OpenBSD. struct kproc2 doesn't exist any more.

platform api

Change return type of uv_get_*_memory() functions

... from double to uint64_t. Limit use of floating point in public API as much
as possible.

unix: add support for OpenBSD