PR-URL: #13870
Reviewed-By: Miroslav Bajtoš <mbajtoss@gmail.com>

Implement a special async_hooks listener that forwards information
about async tasks to V8Inspector asyncTask* API, thus enabling
DevTools feature "async stack traces".

The feature is enabled only on 64bit platforms due to a technical
limitation of V8 Inspector: inspector uses a pointer as a task id,
while async_hooks use 64bit numbers as ids.

To avoid performance penalty of async_hooks when not debugging,
the new listener is enabled only when the process enters a debug mode:

 - When the process is started with `--inspect` or `--inspect-brk`,
   the listener is enabled immediately and async stack traces
   lead all the way to the first tick of the event loop.

 - When the debug mode is enabled via SIGUSR1 or `_debugProcess()`,
   the listener is enabled together with the debugger. As a result,
   only async operations started after the signal was received
   will be correctly observed and reported to V8 Inspector. For example,
   a `setInterval()` called in the first tick of the event will not be
   shown in the async stack trace when the callback is invoked. This
   behaviour is consistent with Chrome DevTools.

Last but not least, this commit fixes handling of InspectorAgent's
internal property `enabled_` to ensure it's set back to `false`
after the debugger is deactivated (typically via `process._debugEnd()`).

Fixes: #11370
PR-URL: #13870
Reviewed-by: Timothy Gu <timothygu99@gmail.com>
Reviewed-by: Anna Henningsen <anna@addaleax.net>

PR-URL: #13870
Reviewed-By: Miroslav Bajtoš <mbajtoss@gmail.com>

Implement a special async_hooks listener that forwards information
about async tasks to V8Inspector asyncTask* API, thus enabling
DevTools feature "async stack traces".

The feature is enabled only on 64bit platforms due to a technical
limitation of V8 Inspector: inspector uses a pointer as a task id,
while async_hooks use 64bit numbers as ids.

To avoid performance penalty of async_hooks when not debugging,
the new listener is enabled only when the process enters a debug mode:

 - When the process is started with `--inspect` or `--inspect-brk`,
   the listener is enabled immediately and async stack traces
   lead all the way to the first tick of the event loop.

 - When the debug mode is enabled via SIGUSR1 or `_debugProcess()`,
   the listener is enabled together with the debugger. As a result,
   only async operations started after the signal was received
   will be correctly observed and reported to V8 Inspector. For example,
   a `setInterval()` called in the first tick of the event will not be
   shown in the async stack trace when the callback is invoked. This
   behaviour is consistent with Chrome DevTools.

Last but not least, this commit fixes handling of InspectorAgent's
internal property `enabled_` to ensure it's set back to `false`
after the debugger is deactivated (typically via `process._debugEnd()`).

Fixes: #11370
PR-URL: #13870
Reviewed-by: Timothy Gu <timothygu99@gmail.com>
Reviewed-by: Anna Henningsen <anna@addaleax.net>

PR-URL: #13870
Reviewed-By: Miroslav Bajtoš <mbajtoss@gmail.com>

Implement a special async_hooks listener that forwards information
about async tasks to V8Inspector asyncTask* API, thus enabling
DevTools feature "async stack traces".

The feature is enabled only on 64bit platforms due to a technical
limitation of V8 Inspector: inspector uses a pointer as a task id,
while async_hooks use 64bit numbers as ids.

To avoid performance penalty of async_hooks when not debugging,
the new listener is enabled only when the process enters a debug mode:

 - When the process is started with `--inspect` or `--inspect-brk`,
   the listener is enabled immediately and async stack traces
   lead all the way to the first tick of the event loop.

 - When the debug mode is enabled via SIGUSR1 or `_debugProcess()`,
   the listener is enabled together with the debugger. As a result,
   only async operations started after the signal was received
   will be correctly observed and reported to V8 Inspector. For example,
   a `setInterval()` called in the first tick of the event will not be
   shown in the async stack trace when the callback is invoked. This
   behaviour is consistent with Chrome DevTools.

Last but not least, this commit fixes handling of InspectorAgent's
internal property `enabled_` to ensure it's set back to `false`
after the debugger is deactivated (typically via `process._debugEnd()`).

Fixes: #11370
PR-URL: #13870
Reviewed-by: Timothy Gu <timothygu99@gmail.com>
Reviewed-by: Anna Henningsen <anna@addaleax.net>

PR-URL: #13870
Reviewed-By: Miroslav Bajtoš <mbajtoss@gmail.com>

Implement a special async_hooks listener that forwards information
about async tasks to V8Inspector asyncTask* API, thus enabling
DevTools feature "async stack traces".

The feature is enabled only on 64bit platforms due to a technical
limitation of V8 Inspector: inspector uses a pointer as a task id,
while async_hooks use 64bit numbers as ids.

To avoid performance penalty of async_hooks when not debugging,
the new listener is enabled only when the process enters a debug mode:

 - When the process is started with `--inspect` or `--inspect-brk`,
   the listener is enabled immediately and async stack traces
   lead all the way to the first tick of the event loop.

 - When the debug mode is enabled via SIGUSR1 or `_debugProcess()`,
   the listener is enabled together with the debugger. As a result,
   only async operations started after the signal was received
   will be correctly observed and reported to V8 Inspector. For example,
   a `setInterval()` called in the first tick of the event will not be
   shown in the async stack trace when the callback is invoked. This
   behaviour is consistent with Chrome DevTools.

Last but not least, this commit fixes handling of InspectorAgent's
internal property `enabled_` to ensure it's set back to `false`
after the debugger is deactivated (typically via `process._debugEnd()`).

Fixes: #11370
PR-URL: #13870
Reviewed-by: Timothy Gu <timothygu99@gmail.com>
Reviewed-by: Anna Henningsen <anna@addaleax.net>

Notable Changes

* build:
  * Snapshots are now re-enabled in V8
  #14875

* console:
  * Implement minimal `console.group()`.
  #14910

* deps:
  * upgrade libuv to 1.14.1
    #14866
  * update nghttp2 to v1.25.0
    #14955

* dns:
  * Add `verbatim` option to dns.lookup(). When true, results from the
    DNS resolver are passed on as-is, without the reshuffling that
    Node.js otherwise does that puts IPv4 addresses before IPv6
    addresses.
    #14731

* fs:
  * add fs.copyFile and fs.copyFileSync which allows for more efficient
    copying of files.
    #15034

* inspector:
  * Enable async stack traces
    #13870

* module:
  * Add support for ESM. This is currently behind the
    `--experimental-modules` flag and requires the .mjs extension.
    `node --experimental-modules index.mjs`
    #14369

* napi:
  * implement promise
    #14365

* os:
  * Add support for CIDR notation to the output of the
    networkInterfaces() method.
    #14307

* perf_hooks:
  * An initial implementation of the Performance Timing API for
    Node.js. This is the same Performance Timing API implemented by
    modern browsers with a number of Node.js specific properties. The
    User Timing mark() and measure() APIs are implemented, as is a
    Node.js specific flavor of the Frame Timing for measuring event
    loop duration.
    #14680

* tls:
  * multiple PFX in createSecureContext
    [#14793](#14793)

* Added new collaborators:
  * BridgeAR – Ruben Bridgewater

PR-URL: #15308

Notable Changes

* build:
  * Snapshots are now re-enabled in V8
  #14875

* console:
  * Implement minimal `console.group()`.
  #14910

* deps:
  * upgrade libuv to 1.14.1
    #14866
  * update nghttp2 to v1.25.0
    #14955

* dns:
  * Add `verbatim` option to dns.lookup(). When true, results from the
    DNS resolver are passed on as-is, without the reshuffling that
    Node.js otherwise does that puts IPv4 addresses before IPv6
    addresses.
    #14731

* fs:
  * add fs.copyFile and fs.copyFileSync which allows for more efficient
    copying of files.
    #15034

* inspector:
  * Enable async stack traces
    #13870

* module:
  * Add support for ESM. This is currently behind the
    `--experimental-modules` flag and requires the .mjs extension.
    `node --experimental-modules index.mjs`
    #14369

* napi:
  * implement promise
    #14365

* os:
  * Add support for CIDR notation to the output of the
    networkInterfaces() method.
    #14307

* perf_hooks:
  * An initial implementation of the Performance Timing API for
    Node.js. This is the same Performance Timing API implemented by
    modern browsers with a number of Node.js specific properties. The
    User Timing mark() and measure() APIs are implemented, as is a
    Node.js specific flavor of the Frame Timing for measuring event
    loop duration.
    #14680

* tls:
  * multiple PFX in createSecureContext
    [#14793](#14793)

* Added new collaborators:
  * BridgeAR – Ruben Bridgewater

PR-URL: #15308

Notable Changes

* build:
  * Snapshots are now re-enabled in V8
  nodejs#14875

* console:
  * Implement minimal `console.group()`.
  nodejs#14910

* deps:
  * upgrade libuv to 1.14.1
    nodejs#14866
  * update nghttp2 to v1.25.0
    nodejs#14955

* dns:
  * Add `verbatim` option to dns.lookup(). When true, results from the
    DNS resolver are passed on as-is, without the reshuffling that
    Node.js otherwise does that puts IPv4 addresses before IPv6
    addresses.
    nodejs#14731

* fs:
  * add fs.copyFile and fs.copyFileSync which allows for more efficient
    copying of files.
    nodejs#15034

* inspector:
  * Enable async stack traces
    nodejs#13870

* module:
  * Add support for ESM. This is currently behind the
    `--experimental-modules` flag and requires the .mjs extension.
    `node --experimental-modules index.mjs`
    nodejs#14369

* napi:
  * implement promise
    nodejs#14365

* os:
  * Add support for CIDR notation to the output of the
    networkInterfaces() method.
    nodejs#14307

* perf_hooks:
  * An initial implementation of the Performance Timing API for
    Node.js. This is the same Performance Timing API implemented by
    modern browsers with a number of Node.js specific properties. The
    User Timing mark() and measure() APIs are implemented, as is a
    Node.js specific flavor of the Frame Timing for measuring event
    loop duration.
    nodejs#14680

* tls:
  * multiple PFX in createSecureContext
    [nodejs#14793](nodejs#14793)

* Added new collaborators:
  * BridgeAR – Ruben Bridgewater

PR-URL: nodejs#15308