deps: cherry-pick Swallowed Rejection Hook from V8 #21838

targos · 2018-07-16T20:15:24Z

Cherry-picks two commits:

Refs: nodejs/promises-debugging#8

Being an API change, they are not eligible for upstream back-merge.

/cc @nodejs/v8-update @MayaLekova @nodejs/promises-debugging

Checklist

make -j4 test (UNIX), or vcbuild test (Windows) passes
commit message follows commit guidelines

targos · 2018-07-16T20:17:38Z

I could cherry-pick the commits without a conflict but got a compilation error:

In file included from ../deps/v8/src/debug/debug.h:19,
                 from ../deps/v8/src/runtime/runtime-promise.cc:10:
../deps/v8/src/frames.h: In member function ‘void v8::internal::InnerPointerToCodeCache::Flush()’:
../deps/v8/src/frames.h:47:41: warning: ‘void* memset(void*, int, size_t)’ clearing an object of non-trivial type ‘struct v8::internal::InnerPointerToCodeCache::InnerPointerToCodeCacheEntry’; use assignment or value-initialization instead [-Wclass-memaccess]
     memset(&cache_[0], 0, sizeof(cache_));
                                         ^
../deps/v8/src/frames.h:36:10: note: ‘struct v8::internal::InnerPointerToCodeCache::InnerPointerToCodeCacheEntry’ declared here
   struct InnerPointerToCodeCacheEntry {
          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
../deps/v8/src/runtime/runtime-promise.cc: In function ‘v8::internal::Object* v8::internal::__RT_impl_Runtime_PromiseRejectAfterResolved(v8::internal::Arguments, v8::internal::Isolate*)’:
../deps/v8/src/runtime/runtime-promise.cc:48:10: error: ‘ReadOnlyRoots’ was not declared in this scope
   return ReadOnlyRoots(isolate).undefined_value();
          ^~~~~~~~~~~~~
../deps/v8/src/runtime/runtime-promise.cc:48:10: note: suggested alternative: ‘ReadOnlySpace’
   return ReadOnlyRoots(isolate).undefined_value();
          ^~~~~~~~~~~~~
          ReadOnlySpace
../deps/v8/src/runtime/runtime-promise.cc: In function ‘v8::internal::Object* v8::internal::__RT_impl_Runtime_PromiseResolveAfterResolved(v8::internal::Arguments, v8::internal::Isolate*)’:
../deps/v8/src/runtime/runtime-promise.cc:58:10: error: ‘ReadOnlyRoots’ was not declared in this scope
   return ReadOnlyRoots(isolate).undefined_value();
          ^~~~~~~~~~~~~
../deps/v8/src/runtime/runtime-promise.cc:58:10: note: suggested alternative: ‘ReadOnlySpace’
   return ReadOnlyRoots(isolate).undefined_value();
          ^~~~~~~~~~~~~
          ReadOnlySpace

targos · 2018-07-16T20:37:13Z

Compilation fixed.
Now a few of our tests are failing. It looks like there needs to be a change in node to support the new hook.
/cc @bmeurer is that expected?

Repro:

$ ./node -e "new Promise((resolve, reject) => { resolve(true); reject(false); })"
 1: 0x8afb30 node::Abort() [./node]
 2: 0x87e77b  [./node]
 3: 0xf0a88d v8::internal::Isolate::ReportPromiseReject(v8::internal::Handle<v8::internal::JSPromise>, v8::internal::Handle<v8::internal::Object>, v8::PromiseRejectEvent) [./node]
 4: 0x10e1bfd v8::internal::Runtime_PromiseRejectAfterResolved(int, v8::internal::Object**, v8::internal::Isolate*) [./node]
 5: 0x2793eb2841bd
[1]    29190 abort (core dumped)  ./node -e

deps/v8/include/v8.h

-  kPromiseHandlerAddedAfterReject = 1
+  kPromiseHandlerAddedAfterReject = 1,
+  kPromiseRejectAfterResolved = 2,
+  kPromiseResolveAfterResolved = 3,


devsnek · 2018-07-16T21:41:47Z

@targos

node/src/bootstrapper.cc

Line 72 in 210fea5

UNREACHABLE();

BridgeAR · 2018-07-16T21:44:38Z

@targos just a few days ago in the @nodejs/promises-debugging group we discussed this together and I asked @MayaLekova if she could backport that upstream. Should we maybe wait for that? :-)

In general I am happy to have it in Node and I have no strong opinion but I thought it is best to have it upstream.

bmeurer · 2018-07-17T05:28:02Z

@BridgeAR we cannot backport on the V8 side since it requires changes in Chrome, which goes against our policy. You'll need to float this as patch on top of Node instead.

MayaLekova · 2018-07-17T05:35:24Z

@BridgeAR I wasn't sure about the changes in Chrome when we talked, so yesterday after trying to backport this, we decided that the only option is to have it floated for Node.js. So @targos took the initiative.

targos · 2018-07-17T06:06:05Z

@nodejs/promises-debugging would someone of you like to take it from here and make the necessary changes on Node's side? I'd also be happy to do it myself if you give me directions. I just haven't followed the original discussions and don't how you planned to use this hook.

bmeurer · 2018-07-17T06:43:22Z

@targos I'd suggest to go with v8@d11dafa initially and then with a later PR add actual functionality.

This is done in preparation for landing https://chromium-review.googlesource.com/c/v8/v8/+/1126099 on the V8 side, which extends the existing PromiseRejectEvent mechanism with new hooks for reject/resolve after a Promise was previously resolved already. Refs: nodejs/promises-debugging#8 Design: https://goo.gl/2stLUY

Original commit message: [turbofan] Remove optimization of default Promise capability functions. The JSCallReducer could in theory inline the default resolve and reject functions passed to the executor in the Promise constructor. But that inlining is almost never triggered because we don't have SFI based feedback in the CallIC. Also the use of the Promise constructor is discouraged, so we shouldn't really need to squeeze the last bit of performance out of this even in the future. Getting rid of this optimization will make significantly easier to implement the Swallowed Rejection Hook, as there's less churn on the TurboFan side then. Bug: v8:7919 Change-Id: If0c54f1c6c7ce95686cd74232be6b8693ac688c9 Reviewed-on: https://chromium-review.googlesource.com/1125926 Commit-Queue: Benedikt Meurer <bmeurer@chromium.org> Reviewed-by: Jaroslav Sevcik <jarin@chromium.org> Cr-Commit-Position: refs/heads/master@{nodejs#54210} Refs: v8/v8@2075910

Original commit message: [promise] Implement Swallowed Rejection Hook. This extends the current Promise Rejection Hook with two new events kPromiseRejectAfterResolved kPromiseResolveAfterResolved which are used to detect (and signal) misuse of the Promise constructor. Specifically the common bug like new Promise((res, rej) => { res(1); throw new Error("something") }); where the error is silently swallowed by the Promise constructor without the user ever noticing can be caught via this hook. Doc: https://goo.gl/2stLUY Bug: v8:7919 Cq-Include-Trybots: luci.chromium.try:linux_chromium_rel_ng Change-Id: I890a7e766cdd1be88db94844fb744f72823dba33 Reviewed-on: https://chromium-review.googlesource.com/1126099 Reviewed-by: Maya Lekova <mslekova@chromium.org> Reviewed-by: Benedikt Meurer <bmeurer@chromium.org> Reviewed-by: Yang Guo <yangguo@chromium.org> Commit-Queue: Benedikt Meurer <bmeurer@chromium.org> Cr-Commit-Position: refs/heads/master@{#54309} Refs: v8/v8@907d7bc

targos · 2018-07-17T09:58:58Z

@bmeurer I included your commit. This is ready for review

targos · 2018-07-17T10:00:04Z

CI: https://ci.nodejs.org/job/node-test-pull-request/15908/
V8 CI: https://ci.nodejs.org/job/node-test-commit-v8-linux/1525/

This is done in preparation for landing https://chromium-review.googlesource.com/c/v8/v8/+/1126099 on the V8 side, which extends the existing PromiseRejectEvent mechanism with new hooks for reject/resolve after a Promise was previously resolved already. Refs: nodejs/promises-debugging#8 Design: https://goo.gl/2stLUY PR-URL: #21838 Reviewed-By: Gus Caplan <me@gus.host> Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com> Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Yang Guo <yangguo@chromium.org> Reviewed-By: Benedikt Meurer <benedikt.meurer@gmail.com>

Original commit message: [turbofan] Remove optimization of default Promise capability functions. The JSCallReducer could in theory inline the default resolve and reject functions passed to the executor in the Promise constructor. But that inlining is almost never triggered because we don't have SFI based feedback in the CallIC. Also the use of the Promise constructor is discouraged, so we shouldn't really need to squeeze the last bit of performance out of this even in the future. Getting rid of this optimization will make significantly easier to implement the Swallowed Rejection Hook, as there's less churn on the TurboFan side then. Bug: v8:7919 Change-Id: If0c54f1c6c7ce95686cd74232be6b8693ac688c9 Reviewed-on: https://chromium-review.googlesource.com/1125926 Commit-Queue: Benedikt Meurer <bmeurer@chromium.org> Reviewed-by: Jaroslav Sevcik <jarin@chromium.org> Cr-Commit-Position: refs/heads/master@{#54210} Refs: v8/v8@2075910 PR-URL: #21838 Refs: nodejs/promises-debugging#8 Reviewed-By: Gus Caplan <me@gus.host> Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com> Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Yang Guo <yangguo@chromium.org> Reviewed-By: Benedikt Meurer <benedikt.meurer@gmail.com>

Original commit message: [promise] Implement Swallowed Rejection Hook. This extends the current Promise Rejection Hook with two new events kPromiseRejectAfterResolved kPromiseResolveAfterResolved which are used to detect (and signal) misuse of the Promise constructor. Specifically the common bug like new Promise((res, rej) => { res(1); throw new Error("something") }); where the error is silently swallowed by the Promise constructor without the user ever noticing can be caught via this hook. Doc: https://goo.gl/2stLUY Bug: v8:7919 Cq-Include-Trybots: luci.chromium.try:linux_chromium_rel_ng Change-Id: I890a7e766cdd1be88db94844fb744f72823dba33 Reviewed-on: https://chromium-review.googlesource.com/1126099 Reviewed-by: Maya Lekova <mslekova@chromium.org> Reviewed-by: Benedikt Meurer <bmeurer@chromium.org> Reviewed-by: Yang Guo <yangguo@chromium.org> Commit-Queue: Benedikt Meurer <bmeurer@chromium.org> Cr-Commit-Position: refs/heads/master@{#54309} Refs: v8/v8@907d7bc PR-URL: #21838 Refs: nodejs/promises-debugging#8 Reviewed-By: Gus Caplan <me@gus.host> Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com> Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Yang Guo <yangguo@chromium.org> Reviewed-By: Benedikt Meurer <benedikt.meurer@gmail.com>

targos · 2018-07-19T06:56:23Z

Landed in 756f63e 4ce35fa d0a545c

Original commit message: [turbofan] Remove optimization of default Promise capability functions. The JSCallReducer could in theory inline the default resolve and reject functions passed to the executor in the Promise constructor. But that inlining is almost never triggered because we don't have SFI based feedback in the CallIC. Also the use of the Promise constructor is discouraged, so we shouldn't really need to squeeze the last bit of performance out of this even in the future. Getting rid of this optimization will make significantly easier to implement the Swallowed Rejection Hook, as there's less churn on the TurboFan side then. Bug: v8:7919 Change-Id: If0c54f1c6c7ce95686cd74232be6b8693ac688c9 Reviewed-on: https://chromium-review.googlesource.com/1125926 Commit-Queue: Benedikt Meurer <bmeurer@chromium.org> Reviewed-by: Jaroslav Sevcik <jarin@chromium.org> Cr-Commit-Position: refs/heads/master@{nodejs#54210} Refs: v8/v8@2075910 PR-URL: nodejs#21838 Refs: nodejs/promises-debugging#8 Reviewed-By: Gus Caplan <me@gus.host> Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com> Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Yang Guo <yangguo@chromium.org> Reviewed-By: Benedikt Meurer <benedikt.meurer@gmail.com>

Original commit message: [promise] Implement Swallowed Rejection Hook. This extends the current Promise Rejection Hook with two new events kPromiseRejectAfterResolved kPromiseResolveAfterResolved which are used to detect (and signal) misuse of the Promise constructor. Specifically the common bug like new Promise((res, rej) => { res(1); throw new Error("something") }); where the error is silently swallowed by the Promise constructor without the user ever noticing can be caught via this hook. Doc: https://goo.gl/2stLUY Bug: v8:7919 Cq-Include-Trybots: luci.chromium.try:linux_chromium_rel_ng Change-Id: I890a7e766cdd1be88db94844fb744f72823dba33 Reviewed-on: https://chromium-review.googlesource.com/1126099 Reviewed-by: Maya Lekova <mslekova@chromium.org> Reviewed-by: Benedikt Meurer <bmeurer@chromium.org> Reviewed-by: Yang Guo <yangguo@chromium.org> Commit-Queue: Benedikt Meurer <bmeurer@chromium.org> Cr-Commit-Position: refs/heads/master@{#54309} Refs: v8/v8@907d7bc PR-URL: nodejs#21838 Refs: nodejs/promises-debugging#8 Reviewed-By: Gus Caplan <me@gus.host> Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com> Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Yang Guo <yangguo@chromium.org> Reviewed-By: Benedikt Meurer <benedikt.meurer@gmail.com>

Original commit message: [turbofan] Remove optimization of default Promise capability functions. The JSCallReducer could in theory inline the default resolve and reject functions passed to the executor in the Promise constructor. But that inlining is almost never triggered because we don't have SFI based feedback in the CallIC. Also the use of the Promise constructor is discouraged, so we shouldn't really need to squeeze the last bit of performance out of this even in the future. Getting rid of this optimization will make significantly easier to implement the Swallowed Rejection Hook, as there's less churn on the TurboFan side then. Bug: v8:7919 Change-Id: If0c54f1c6c7ce95686cd74232be6b8693ac688c9 Reviewed-on: https://chromium-review.googlesource.com/1125926 Commit-Queue: Benedikt Meurer <bmeurer@chromium.org> Reviewed-by: Jaroslav Sevcik <jarin@chromium.org> Cr-Commit-Position: refs/heads/master@{nodejs#54210} Refs: v8/v8@2075910 PR-URL: nodejs#21838 Refs: nodejs/promises-debugging#8 Reviewed-By: Gus Caplan <me@gus.host> Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com> Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Yang Guo <yangguo@chromium.org> Reviewed-By: Benedikt Meurer <benedikt.meurer@gmail.com>

Original commit message: [promise] Implement Swallowed Rejection Hook. This extends the current Promise Rejection Hook with two new events kPromiseRejectAfterResolved kPromiseResolveAfterResolved which are used to detect (and signal) misuse of the Promise constructor. Specifically the common bug like new Promise((res, rej) => { res(1); throw new Error("something") }); where the error is silently swallowed by the Promise constructor without the user ever noticing can be caught via this hook. Doc: https://goo.gl/2stLUY Bug: v8:7919 Cq-Include-Trybots: luci.chromium.try:linux_chromium_rel_ng Change-Id: I890a7e766cdd1be88db94844fb744f72823dba33 Reviewed-on: https://chromium-review.googlesource.com/1126099 Reviewed-by: Maya Lekova <mslekova@chromium.org> Reviewed-by: Benedikt Meurer <bmeurer@chromium.org> Reviewed-by: Yang Guo <yangguo@chromium.org> Commit-Queue: Benedikt Meurer <bmeurer@chromium.org> Cr-Commit-Position: refs/heads/master@{#54309} Refs: v8/v8@907d7bc PR-URL: nodejs#21838 Refs: nodejs/promises-debugging#8 Reviewed-By: Gus Caplan <me@gus.host> Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com> Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Yang Guo <yangguo@chromium.org> Reviewed-By: Benedikt Meurer <benedikt.meurer@gmail.com>

Original commit message: [turbofan] Remove optimization of default Promise capability functions. The JSCallReducer could in theory inline the default resolve and reject functions passed to the executor in the Promise constructor. But that inlining is almost never triggered because we don't have SFI based feedback in the CallIC. Also the use of the Promise constructor is discouraged, so we shouldn't really need to squeeze the last bit of performance out of this even in the future. Getting rid of this optimization will make significantly easier to implement the Swallowed Rejection Hook, as there's less churn on the TurboFan side then. Bug: v8:7919 Change-Id: If0c54f1c6c7ce95686cd74232be6b8693ac688c9 Reviewed-on: https://chromium-review.googlesource.com/1125926 Commit-Queue: Benedikt Meurer <bmeurer@chromium.org> Reviewed-by: Jaroslav Sevcik <jarin@chromium.org> Cr-Commit-Position: refs/heads/master@{nodejs#54210} Refs: v8/v8@2075910 PR-URL: nodejs#21838 Refs: nodejs/promises-debugging#8 Reviewed-By: Gus Caplan <me@gus.host> Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com> Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Yang Guo <yangguo@chromium.org> Reviewed-By: Benedikt Meurer <benedikt.meurer@gmail.com>

Original commit message: [promise] Implement Swallowed Rejection Hook. This extends the current Promise Rejection Hook with two new events kPromiseRejectAfterResolved kPromiseResolveAfterResolved which are used to detect (and signal) misuse of the Promise constructor. Specifically the common bug like new Promise((res, rej) => { res(1); throw new Error("something") }); where the error is silently swallowed by the Promise constructor without the user ever noticing can be caught via this hook. Doc: https://goo.gl/2stLUY Bug: v8:7919 Cq-Include-Trybots: luci.chromium.try:linux_chromium_rel_ng Change-Id: I890a7e766cdd1be88db94844fb744f72823dba33 Reviewed-on: https://chromium-review.googlesource.com/1126099 Reviewed-by: Maya Lekova <mslekova@chromium.org> Reviewed-by: Benedikt Meurer <bmeurer@chromium.org> Reviewed-by: Yang Guo <yangguo@chromium.org> Commit-Queue: Benedikt Meurer <bmeurer@chromium.org> Cr-Commit-Position: refs/heads/master@{#54309} Refs: v8/v8@907d7bc PR-URL: nodejs#21838 Refs: nodejs/promises-debugging#8 Reviewed-By: Gus Caplan <me@gus.host> Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com> Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Yang Guo <yangguo@chromium.org> Reviewed-By: Benedikt Meurer <benedikt.meurer@gmail.com>

MylesBorins · 2018-08-07T15:49:41Z

Should this be backported to v8.x-staging? If yes please follow the guide and raise a backport PR, if not let me know or add the dont-land-on label.

Original commit message: [turbofan] Remove optimization of default Promise capability functions. The JSCallReducer could in theory inline the default resolve and reject functions passed to the executor in the Promise constructor. But that inlining is almost never triggered because we don't have SFI based feedback in the CallIC. Also the use of the Promise constructor is discouraged, so we shouldn't really need to squeeze the last bit of performance out of this even in the future. Getting rid of this optimization will make significantly easier to implement the Swallowed Rejection Hook, as there's less churn on the TurboFan side then. Bug: v8:7919 Change-Id: If0c54f1c6c7ce95686cd74232be6b8693ac688c9 Reviewed-on: https://chromium-review.googlesource.com/1125926 Commit-Queue: Benedikt Meurer <bmeurer@chromium.org> Reviewed-by: Jaroslav Sevcik <jarin@chromium.org> Cr-Commit-Position: refs/heads/master@{#54210} Refs: v8/v8@2075910 Backport-PR-URL: #21668 PR-URL: #21838 Refs: nodejs/promises-debugging#8 Reviewed-By: Gus Caplan <me@gus.host> Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com> Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Yang Guo <yangguo@chromium.org> Reviewed-By: Benedikt Meurer <benedikt.meurer@gmail.com>

Original commit message: [promise] Implement Swallowed Rejection Hook. This extends the current Promise Rejection Hook with two new events kPromiseRejectAfterResolved kPromiseResolveAfterResolved which are used to detect (and signal) misuse of the Promise constructor. Specifically the common bug like new Promise((res, rej) => { res(1); throw new Error("something") }); where the error is silently swallowed by the Promise constructor without the user ever noticing can be caught via this hook. Doc: https://goo.gl/2stLUY Bug: v8:7919 Cq-Include-Trybots: luci.chromium.try:linux_chromium_rel_ng Change-Id: I890a7e766cdd1be88db94844fb744f72823dba33 Reviewed-on: https://chromium-review.googlesource.com/1126099 Reviewed-by: Maya Lekova <mslekova@chromium.org> Reviewed-by: Benedikt Meurer <bmeurer@chromium.org> Reviewed-by: Yang Guo <yangguo@chromium.org> Commit-Queue: Benedikt Meurer <bmeurer@chromium.org> Cr-Commit-Position: refs/heads/master@{#54309} Refs: v8/v8@907d7bc Backport-PR-URL: #21668 PR-URL: #21838 Refs: nodejs/promises-debugging#8 Reviewed-By: Gus Caplan <me@gus.host> Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com> Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Yang Guo <yangguo@chromium.org> Reviewed-By: Benedikt Meurer <benedikt.meurer@gmail.com>

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nodejs-github-bot added build Issues and PRs related to build files or the CI. v8 engine Issues and PRs related to the V8 dependency. labels Jul 16, 2018

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deps/v8/include/v8.h

kPromiseHandlerAddedAfterReject = 1

kPromiseHandlerAddedAfterReject = 1,

kPromiseRejectAfterResolved = 2,

kPromiseResolveAfterResolved = 3,

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bmeurer and others added 3 commits July 17, 2018 11:55

targos force-pushed the v8-promises branch from d5d0066 to d4166de Compare July 17, 2018 09:59

devsnek approved these changes Jul 17, 2018

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devsnek mentioned this pull request Jul 17, 2018

Proposal for hook into resolution attempts of already resolved/rejected promise nodejs/promises-debugging#8

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devsnek added the author ready PRs that have at least one approval, no pending requests for changes, and a CI started. label Jul 18, 2018

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v10.8.0 proposal #22040

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Release proposal: v10.9.0 #22295

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deps: cherry-pick Swallowed Rejection Hook from V8 #21838

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deps: cherry-pick Swallowed Rejection Hook from V8 #21838

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