doc: add diagnostics WG session summary #240

gireeshpunathil · 2020-01-07T09:44:13Z

Fixes: #206

christian-bromann

👍

Include a report for each sub-Worker of the current Node.js instance. This adds a feature that is necessary for eventually making the report feature stable, as was discussed during the last collaborator summit. Refs: openjs-foundation/summit#240

Refactor for clarity and reusability. Make it more obvious that the list is a FIFO queue. PR-URL: #31386 Refs: openjs-foundation/summit#240 Reviewed-By: Gireesh Punathil <[email protected]> Reviewed-By: James M Snell <[email protected]> Reviewed-By: Colin Ihrig <[email protected]> Reviewed-By: Rich Trott <[email protected]>

There is no real reason to manage a count manually, given that checking whether there are C++ callbacks is a single pointer comparison. This makes it easier to add other kinds of native C++ callbacks that are managed in a similar way. PR-URL: #31386 Refs: openjs-foundation/summit#240 Reviewed-By: Gireesh Punathil <[email protected]> Reviewed-By: James M Snell <[email protected]> Reviewed-By: Colin Ihrig <[email protected]> Reviewed-By: Rich Trott <[email protected]>

Add a variant of `SetImmediate()` that can be called from any thread. This allows removing the `AsyncRequest` abstraction and replaces it with a more generic mechanism. PR-URL: #31386 Refs: openjs-foundation/summit#240 Reviewed-By: Gireesh Punathil <[email protected]> Reviewed-By: James M Snell <[email protected]> Reviewed-By: Colin Ihrig <[email protected]> Reviewed-By: Rich Trott <[email protected]>

Remove `AsyncRequest` from the source code, and replace its usage with threadsafe `SetImmediate()` calls. This has the advantage of being able to pass in any function, rather than one that is defined when the `AsyncRequest` is “installed”. This necessitates two changes: - The stopping flag (which was only used in one case and ignored in the other) is now a direct member of the `Environment` class. - Workers no longer have their own libuv handles, requiring manual management of their libuv ref count. As a drive-by fix, the `can_call_into_js` variable was turned into an atomic variable. While there have been no bug reports, the flag is set from `Stop(env)` calls, which are supposed to be possible from any thread. PR-URL: #31386 Refs: openjs-foundation/summit#240 Reviewed-By: Gireesh Punathil <[email protected]> Reviewed-By: James M Snell <[email protected]> Reviewed-By: Colin Ihrig <[email protected]> Reviewed-By: Rich Trott <[email protected]>

Allow doing what V8’s `v8::Isolate::RequestInterrupt()` does for V8. This also works when there is no JS code currently executing. PR-URL: #31386 Refs: openjs-foundation/summit#240 Reviewed-By: Gireesh Punathil <[email protected]> Reviewed-By: James M Snell <[email protected]> Reviewed-By: Colin Ihrig <[email protected]> Reviewed-By: Rich Trott <[email protected]>

This is a) the right thing to do anyway because these functions can not be inlined by the compiler and b) avoids compilation warnings in the following commit. PR-URL: #31386 Refs: openjs-foundation/summit#240 Reviewed-By: Gireesh Punathil <[email protected]> Reviewed-By: James M Snell <[email protected]> Reviewed-By: Colin Ihrig <[email protected]> Reviewed-By: Rich Trott <[email protected]>

Include a report for each sub-Worker of the current Node.js instance. This adds a feature that is necessary for eventually making the report feature stable, as was discussed during the last collaborator summit. Refs: openjs-foundation/summit#240 PR-URL: #31386 Reviewed-By: Gireesh Punathil <[email protected]> Reviewed-By: James M Snell <[email protected]> Reviewed-By: Colin Ihrig <[email protected]> Reviewed-By: Rich Trott <[email protected]>

Refactor for clarity and reusability. Make it more obvious that the list is a FIFO queue. PR-URL: #31386 Refs: openjs-foundation/summit#240 Reviewed-By: Gireesh Punathil <[email protected]> Reviewed-By: James M Snell <[email protected]> Reviewed-By: Colin Ihrig <[email protected]> Reviewed-By: Rich Trott <[email protected]>

There is no real reason to manage a count manually, given that checking whether there are C++ callbacks is a single pointer comparison. This makes it easier to add other kinds of native C++ callbacks that are managed in a similar way. PR-URL: #31386 Refs: openjs-foundation/summit#240 Reviewed-By: Gireesh Punathil <[email protected]> Reviewed-By: James M Snell <[email protected]> Reviewed-By: Colin Ihrig <[email protected]> Reviewed-By: Rich Trott <[email protected]>

Add a variant of `SetImmediate()` that can be called from any thread. This allows removing the `AsyncRequest` abstraction and replaces it with a more generic mechanism. PR-URL: #31386 Refs: openjs-foundation/summit#240 Reviewed-By: Gireesh Punathil <[email protected]> Reviewed-By: James M Snell <[email protected]> Reviewed-By: Colin Ihrig <[email protected]> Reviewed-By: Rich Trott <[email protected]>

Remove `AsyncRequest` from the source code, and replace its usage with threadsafe `SetImmediate()` calls. This has the advantage of being able to pass in any function, rather than one that is defined when the `AsyncRequest` is “installed”. This necessitates two changes: - The stopping flag (which was only used in one case and ignored in the other) is now a direct member of the `Environment` class. - Workers no longer have their own libuv handles, requiring manual management of their libuv ref count. As a drive-by fix, the `can_call_into_js` variable was turned into an atomic variable. While there have been no bug reports, the flag is set from `Stop(env)` calls, which are supposed to be possible from any thread. PR-URL: #31386 Refs: openjs-foundation/summit#240 Reviewed-By: Gireesh Punathil <[email protected]> Reviewed-By: James M Snell <[email protected]> Reviewed-By: Colin Ihrig <[email protected]> Reviewed-By: Rich Trott <[email protected]>

Allow doing what V8’s `v8::Isolate::RequestInterrupt()` does for V8. This also works when there is no JS code currently executing. PR-URL: #31386 Refs: openjs-foundation/summit#240 Reviewed-By: Gireesh Punathil <[email protected]> Reviewed-By: James M Snell <[email protected]> Reviewed-By: Colin Ihrig <[email protected]> Reviewed-By: Rich Trott <[email protected]>

This is a) the right thing to do anyway because these functions can not be inlined by the compiler and b) avoids compilation warnings in the following commit. PR-URL: #31386 Refs: openjs-foundation/summit#240 Reviewed-By: Gireesh Punathil <[email protected]> Reviewed-By: James M Snell <[email protected]> Reviewed-By: Colin Ihrig <[email protected]> Reviewed-By: Rich Trott <[email protected]>

Include a report for each sub-Worker of the current Node.js instance. This adds a feature that is necessary for eventually making the report feature stable, as was discussed during the last collaborator summit. Refs: openjs-foundation/summit#240 PR-URL: #31386 Reviewed-By: Gireesh Punathil <[email protected]> Reviewed-By: James M Snell <[email protected]> Reviewed-By: Colin Ihrig <[email protected]> Reviewed-By: Rich Trott <[email protected]>

Refactor for clarity and reusability. Make it more obvious that the list is a FIFO queue. PR-URL: nodejs#31386 Refs: openjs-foundation/summit#240 Reviewed-By: Gireesh Punathil <[email protected]> Reviewed-By: James M Snell <[email protected]> Reviewed-By: Colin Ihrig <[email protected]> Reviewed-By: Rich Trott <[email protected]>

There is no real reason to manage a count manually, given that checking whether there are C++ callbacks is a single pointer comparison. This makes it easier to add other kinds of native C++ callbacks that are managed in a similar way. PR-URL: nodejs#31386 Refs: openjs-foundation/summit#240 Reviewed-By: Gireesh Punathil <[email protected]> Reviewed-By: James M Snell <[email protected]> Reviewed-By: Colin Ihrig <[email protected]> Reviewed-By: Rich Trott <[email protected]>

Add a variant of `SetImmediate()` that can be called from any thread. This allows removing the `AsyncRequest` abstraction and replaces it with a more generic mechanism. PR-URL: nodejs#31386 Refs: openjs-foundation/summit#240 Reviewed-By: Gireesh Punathil <[email protected]> Reviewed-By: James M Snell <[email protected]> Reviewed-By: Colin Ihrig <[email protected]> Reviewed-By: Rich Trott <[email protected]>

Remove `AsyncRequest` from the source code, and replace its usage with threadsafe `SetImmediate()` calls. This has the advantage of being able to pass in any function, rather than one that is defined when the `AsyncRequest` is “installed”. This necessitates two changes: - The stopping flag (which was only used in one case and ignored in the other) is now a direct member of the `Environment` class. - Workers no longer have their own libuv handles, requiring manual management of their libuv ref count. As a drive-by fix, the `can_call_into_js` variable was turned into an atomic variable. While there have been no bug reports, the flag is set from `Stop(env)` calls, which are supposed to be possible from any thread. PR-URL: nodejs#31386 Refs: openjs-foundation/summit#240 Reviewed-By: Gireesh Punathil <[email protected]> Reviewed-By: James M Snell <[email protected]> Reviewed-By: Colin Ihrig <[email protected]> Reviewed-By: Rich Trott <[email protected]>

Allow doing what V8’s `v8::Isolate::RequestInterrupt()` does for V8. This also works when there is no JS code currently executing. PR-URL: nodejs#31386 Refs: openjs-foundation/summit#240 Reviewed-By: Gireesh Punathil <[email protected]> Reviewed-By: James M Snell <[email protected]> Reviewed-By: Colin Ihrig <[email protected]> Reviewed-By: Rich Trott <[email protected]>

This is a) the right thing to do anyway because these functions can not be inlined by the compiler and b) avoids compilation warnings in the following commit. PR-URL: nodejs#31386 Refs: openjs-foundation/summit#240 Reviewed-By: Gireesh Punathil <[email protected]> Reviewed-By: James M Snell <[email protected]> Reviewed-By: Colin Ihrig <[email protected]> Reviewed-By: Rich Trott <[email protected]>

Include a report for each sub-Worker of the current Node.js instance. This adds a feature that is necessary for eventually making the report feature stable, as was discussed during the last collaborator summit. Refs: openjs-foundation/summit#240 PR-URL: nodejs#31386 Reviewed-By: Gireesh Punathil <[email protected]> Reviewed-By: James M Snell <[email protected]> Reviewed-By: Colin Ihrig <[email protected]> Reviewed-By: Rich Trott <[email protected]>

Refactor for clarity and reusability. Make it more obvious that the list is a FIFO queue. Backport-PR-URL: #32301 PR-URL: #31386 Refs: openjs-foundation/summit#240 Reviewed-By: Gireesh Punathil <[email protected]> Reviewed-By: James M Snell <[email protected]> Reviewed-By: Colin Ihrig <[email protected]> Reviewed-By: Rich Trott <[email protected]>

There is no real reason to manage a count manually, given that checking whether there are C++ callbacks is a single pointer comparison. This makes it easier to add other kinds of native C++ callbacks that are managed in a similar way. Backport-PR-URL: #32301 PR-URL: #31386 Refs: openjs-foundation/summit#240 Reviewed-By: Gireesh Punathil <[email protected]> Reviewed-By: James M Snell <[email protected]> Reviewed-By: Colin Ihrig <[email protected]> Reviewed-By: Rich Trott <[email protected]>

Add a variant of `SetImmediate()` that can be called from any thread. This allows removing the `AsyncRequest` abstraction and replaces it with a more generic mechanism. Backport-PR-URL: #32301 PR-URL: #31386 Refs: openjs-foundation/summit#240 Reviewed-By: Gireesh Punathil <[email protected]> Reviewed-By: James M Snell <[email protected]> Reviewed-By: Colin Ihrig <[email protected]> Reviewed-By: Rich Trott <[email protected]>

Remove `AsyncRequest` from the source code, and replace its usage with threadsafe `SetImmediate()` calls. This has the advantage of being able to pass in any function, rather than one that is defined when the `AsyncRequest` is “installed”. This necessitates two changes: - The stopping flag (which was only used in one case and ignored in the other) is now a direct member of the `Environment` class. - Workers no longer have their own libuv handles, requiring manual management of their libuv ref count. As a drive-by fix, the `can_call_into_js` variable was turned into an atomic variable. While there have been no bug reports, the flag is set from `Stop(env)` calls, which are supposed to be possible from any thread. Backport-PR-URL: #32301 PR-URL: #31386 Refs: openjs-foundation/summit#240 Reviewed-By: Gireesh Punathil <[email protected]> Reviewed-By: James M Snell <[email protected]> Reviewed-By: Colin Ihrig <[email protected]> Reviewed-By: Rich Trott <[email protected]>

Allow doing what V8’s `v8::Isolate::RequestInterrupt()` does for V8. This also works when there is no JS code currently executing. Backport-PR-URL: #32301 PR-URL: #31386 Refs: openjs-foundation/summit#240 Reviewed-By: Gireesh Punathil <[email protected]> Reviewed-By: James M Snell <[email protected]> Reviewed-By: Colin Ihrig <[email protected]> Reviewed-By: Rich Trott <[email protected]>

This is a) the right thing to do anyway because these functions can not be inlined by the compiler and b) avoids compilation warnings in the following commit. Backport-PR-URL: #32301 PR-URL: #31386 Refs: openjs-foundation/summit#240 Reviewed-By: Gireesh Punathil <[email protected]> Reviewed-By: James M Snell <[email protected]> Reviewed-By: Colin Ihrig <[email protected]> Reviewed-By: Rich Trott <[email protected]>

Include a report for each sub-Worker of the current Node.js instance. This adds a feature that is necessary for eventually making the report feature stable, as was discussed during the last collaborator summit. Refs: openjs-foundation/summit#240 Backport-PR-URL: #32301 PR-URL: #31386 Reviewed-By: Gireesh Punathil <[email protected]> Reviewed-By: James M Snell <[email protected]> Reviewed-By: Colin Ihrig <[email protected]> Reviewed-By: Rich Trott <[email protected]>

doc: add diagnostics WG session summary

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christian-bromann approved these changes Jan 7, 2020

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codeekage approved these changes Jan 8, 2020

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christian-bromann merged commit a383650 into openjs-foundation:master Jan 8, 2020

addaleax mentioned this pull request Jan 16, 2020

report: add support for Workers nodejs/node#31386

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doc: add diagnostics WG session summary #240

doc: add diagnostics WG session summary #240

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doc: add diagnostics WG session summary #240

doc: add diagnostics WG session summary #240

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