n-api: ensure in-module exceptions are propagated #19537

gabrielschulhof · 2018-03-22T21:04:15Z

Fixes: #19437

Checklist

make -j4 test (UNIX), or vcbuild test (Windows) passes
tests and/or benchmarks are included
commit message follows commit guidelines

Whenever we call into an addon, whether it is for a callback, for module init, or for async work-related reasons, we should make sure that * the last error is cleared, * the scopes before the call are the same as after, and * if an exception was thrown and captured inside the module, then it is re-thrown after the call. Therefore we should call into the module in a unified fashion. This change introduces the macro NAPI_CALL_INTO_MODULE() which should be used whenever invoking a callback provided by the module. Fixes: nodejs#19437

mhdawson · 2018-03-24T02:49:52Z

test/addons-napi/test_exception/test.js

+function testFinalize(binding) {
+  let x = test_exception[binding]();
+  x = null;
+  assert.throws(() => { global.gc(); }, /Error during Finalize/);


I think it would be worth running this a number of times with the stress job to make sure its not flaky as there is no guarantee objects will be collected,

mhdawson

LGTM with a suggeston

gabrielschulhof · 2018-03-26T22:04:45Z

@mhdawson it seems node-stress-single-test is not configured to run make build-addons-napi.

gabrielschulhof · 2018-03-27T14:08:13Z

@mhdawson I ran https://ci.nodejs.org/job/node-stress-single-test/1795/ on Debian 9 x86_64 and it passes 100% of the time.

I also found several other places where we rely on the result of a gc:

$ git grep -nEH3 '[.]gc[(][)]' -- test/addons*
test/addons-napi/test_buffer/test.js-8-assert.strictEqual(binding.newBuffer().toString(), binding.theText);
test/addons-napi/test_buffer/test.js-9-assert.strictEqual(binding.newExternalBuffer().toString(), binding.theText);
test/addons-napi/test_buffer/test.js-10-console.log('gc1');
test/addons-napi/test_buffer/test.js:11:global.gc();
test/addons-napi/test_buffer/test.js-12-assert.strictEqual(binding.getDeleterCallCount(), 1);
test/addons-napi/test_buffer/test.js-13-assert.strictEqual(binding.copyBuffer().toString(), binding.theText);
test/addons-napi/test_buffer/test.js-14-
--
test/addons-napi/test_buffer/test.js-16-assert.strictEqual(binding.bufferHasInstance(buffer), true);
test/addons-napi/test_buffer/test.js-17-assert.strictEqual(binding.bufferInfo(buffer), true);
test/addons-napi/test_buffer/test.js-18-buffer = null;
test/addons-napi/test_buffer/test.js:19:global.gc();
test/addons-napi/test_buffer/test.js-20-console.log('gc2');
test/addons-napi/test_buffer/test.js-21-assert.strictEqual(binding.getDeleterCallCount(), 2);
--
test/addons-napi/test_general/test.js-62-let w = {};
test/addons-napi/test_general/test.js-63-test_general.wrap(w);
test/addons-napi/test_general/test.js-64-w = null;
test/addons-napi/test_general/test.js:65:global.gc();
test/addons-napi/test_general/test.js-66-const derefItemWasCalled = test_general.derefItemWasCalled();
test/addons-napi/test_general/test.js-67-assert.strictEqual(derefItemWasCalled, true,
test/addons-napi/test_general/test.js-68-                   'deref_item() was called upon garbage collecting a ' +
--
test/addons-napi/test_general/test.js-89-test_general.testFinalizeWrap(z);
test/addons-napi/test_general/test.js-90-test_general.removeWrap(z);
test/addons-napi/test_general/test.js-91-z = null;
test/addons-napi/test_general/test.js:92:global.gc();
test/addons-napi/test_general/test.js-93-const finalizeWasCalled = test_general.finalizeWasCalled();
test/addons-napi/test_general/test.js-94-assert.strictEqual(finalizeWasCalled, false,
test/addons-napi/test_general/test.js-95-                   'finalize callback was not called upon garbage collection.' +
--
test/addons-napi/test_reference/test.js-26-        throw e;
test/addons-napi/test_reference/test.js-27-      }
test/addons-napi/test_reference/test.js-28-      setImmediate(() => {
test/addons-napi/test_reference/test.js:29:        global.gc();
test/addons-napi/test_reference/test.js-30-        runTests(i + 1, title, tests);
test/addons-napi/test_reference/test.js-31-      });
test/addons-napi/test_reference/test.js-32-    }
--
test/addons/buffer-free-callback/test.js-11-  buf = null;
test/addons/buffer-free-callback/test.js-12-  binding.check(slice);
test/addons/buffer-free-callback/test.js-13-  slice = null;
test/addons/buffer-free-callback/test.js:14:  global.gc();
test/addons/buffer-free-callback/test.js:15:  global.gc();
test/addons/buffer-free-callback/test.js:16:  global.gc();
test/addons/buffer-free-callback/test.js-17-}
test/addons/buffer-free-callback/test.js-18-
test/addons/buffer-free-callback/test.js-19-check(64, 1, 0);

gabrielschulhof · 2018-03-27T14:14:28Z

CI: https://ci.nodejs.org/job/node-test-pull-request/13890/

gabrielschulhof · 2018-03-27T17:27:43Z

The following tests failed:

node-test-commit-plinux#16354
  -> ppcle-ubuntu1404
    -> parallel/test-process-redirect-warnings
node-test-commit-linux#17390
  -> alpine-last-latest-x64
    -> parallel/test-http-client-timeout-agent
node-test-commit-smartos#16341
  -> smartos15-64
    -> parallel/test-file-read-noexist
node-test-commit-linux-containered#3200
  -> ubuntu1604_sharedlibs_zlib_x64
    -> parallel/test-http-client-timeout-agent

I don't believe they are related.

gabrielschulhof · 2018-03-27T18:09:35Z

Landed in 9e22647.

Whenever we call into an addon, whether it is for a callback, for module init, or for async work-related reasons, we should make sure that * the last error is cleared, * the scopes before the call are the same as after, and * if an exception was thrown and captured inside the module, then it is re-thrown after the call. Therefore we should call into the module in a unified fashion. This change introduces the macro NAPI_CALL_INTO_MODULE() which should be used whenever invoking a callback provided by the module. Fixes: #19437 PR-URL: #19537 Reviewed-By: James M Snell <[email protected]> Reviewed-By: Michael Dawson <[email protected]>

Whenever we call into an addon, whether it is for a callback, for module init, or for async work-related reasons, we should make sure that * the last error is cleared, * the scopes before the call are the same as after, and * if an exception was thrown and captured inside the module, then it is re-thrown after the call. Therefore we should call into the module in a unified fashion. This change introduces the macro NAPI_CALL_INTO_MODULE() which should be used whenever invoking a callback provided by the module. Fixes: nodejs#19437 PR-URL: nodejs#19537 Reviewed-By: James M Snell <[email protected]> Reviewed-By: Michael Dawson <[email protected]>

Whenever we call into an addon, whether it is for a callback, for module init, or for async work-related reasons, we should make sure that * the last error is cleared, * the scopes before the call are the same as after, and * if an exception was thrown and captured inside the module, then it is re-thrown after the call. Therefore we should call into the module in a unified fashion. This change introduces the macro NAPI_CALL_INTO_MODULE() which should be used whenever invoking a callback provided by the module. Fixes: #19437 Backport-PR-URL: #19447 PR-URL: #19537 Reviewed-By: James M Snell <[email protected]> Reviewed-By: Michael Dawson <[email protected]>

Whenever we call into an addon, whether it is for a callback, for module init, or for async work-related reasons, we should make sure that * the last error is cleared, * the scopes before the call are the same as after, and * if an exception was thrown and captured inside the module, then it is re-thrown after the call. Therefore we should call into the module in a unified fashion. This change introduces the macro NAPI_CALL_INTO_MODULE() which should be used whenever invoking a callback provided by the module. Fixes: #19437 Backport-PR-URL: #19265 PR-URL: #19537 Reviewed-By: James M Snell <[email protected]> Reviewed-By: Michael Dawson <[email protected]>

nodejs-github-bot added c++ Issues and PRs that require attention from people who are familiar with C++. dont-land-on-v4.x node-api Issues and PRs related to the Node-API. labels Mar 22, 2018

gabrielschulhof changed the title ~~n-api: ensure exceptions are propagated from init~~ [WIP] n-api: ensure exceptions are propagated from init Mar 22, 2018

gabrielschulhof force-pushed the n-api-test-init-exception branch from cffd0ab to 6500f8e Compare March 23, 2018 04:07

gabrielschulhof changed the title ~~[WIP] n-api: ensure exceptions are propagated from init~~ n-api: ensure exceptions are propagated from init Mar 23, 2018

gabrielschulhof changed the title ~~n-api: ensure exceptions are propagated from init~~ n-api: ensure exceptions are propagated from addons Mar 23, 2018

gabrielschulhof changed the title ~~n-api: ensure exceptions are propagated from addons~~ n-api: ensure in-module exceptions are propagated Mar 23, 2018

gabrielschulhof force-pushed the n-api-test-init-exception branch from 6500f8e to 0e5f648 Compare March 23, 2018 13:14

gabrielschulhof force-pushed the n-api-test-init-exception branch from 0e5f648 to 5c15524 Compare March 23, 2018 13:24

mhdawson reviewed Mar 24, 2018

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mhdawson approved these changes Mar 24, 2018

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jasnell approved these changes Mar 24, 2018

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gabrielschulhof closed this Mar 27, 2018

gabrielschulhof deleted the n-api-test-init-exception branch March 27, 2018 18:10

mhdawson mentioned this pull request Mar 29, 2018

n-api - failure in node-addon-api testing after change in node core #19673

Closed

targos mentioned this pull request Apr 4, 2018

v9.11.0 proposal #19799

Merged

MylesBorins mentioned this pull request Apr 16, 2018

v6.14.2 proposal #19996

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MylesBorins mentioned this pull request May 2, 2018

v8.11.2 proposal #20478

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