Server-side backend: a native, JVM-free runtime for Codename One handlers - #5741

Open

shai-almog wants to merge 166 commits into

backend-throughput

Commits on Sep 1, 2026

Make the clean target a usable program runtime, and let casts fail

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77da14d
Measure what a thread costs, and make the per-thread sizes tunable

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01b366d
Stop discarding uncaught exceptions on the clean target

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3d4b378
Fix two ParparVM portability bugs the backend build hit

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2ed10e5
Add virtual threads to the VM

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8d8e894
Yield the virtual thread instead of sleeping its carrier

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7f85de9
Keep the virtual-thread API out of the conservative-roots block

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7cfea66
Capture errno before the GC safepoint in the Linux socket read

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67a61b0
Stop waiting on a thread the GC cannot stop

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15bd697
Turn virtual threads on wherever the switch exists, and file .S as assembly

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6e6a18a
Assemble the .S the generated projects have been shipping unassembled

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fe581d5

Commits on Sep 2, 2026

Close five review findings on the VM half

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be886b6
Make the direct JSON writer agree with the map path, and test that it does

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03d2bf2
Give java.io.File a Windows implementation, and stage the header it now needs

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0119acd
An archive must not write outside the directory it is unpacked into

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9b4b1ca
Finish the Windows java.io.File arm: the four gaps behind the first one

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cea27a2
Zero a pthread_t portably, and stop declaring a local Windows cannot use

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ba22565
Close the VM-half review findings, and record the two that stay open

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80da86d
Four more ways the direct JSON writer disagreed with the map path

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764587f
Enumerate a directory once, and clamp skip without overflowing first

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6155b5f
Resolve drive-relative Windows paths, and create files in one syscall

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a112185
Decode argv and the environment as UTF-8 instead of widening bytes

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eaec4ed
Decode argv and the environment in the PLATFORM's encoding, not always UTF-8

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3451ef0
Validate an array store's index before checking its element type

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ea35b3b
Revert marking a running virtual thread's state active -- it hangs the collector

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2b9d12a
Stop the array store check rejecting valid multidimensional stores

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48e84bb
Probe an unresponsive thread briefly instead of skipping its roots

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287ab9d
Emit JSON null for an unset boxed Boolean or Character

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bb98371
Report thread-table exhaustion instead of writing before the table

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9f27f80
Mark active only what the collector can stop, and unbind TLS before freeing

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99f9263
Keep an unmapped reference field's wire type a string

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e1ea719
Honour close() on System.in

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f13a53c
Mark the unfinished VM surfaces EXPERIMENTAL, and keep checked casts inert

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fbc8ca8
Record the registry-snapshot scope as an experimental gap, not a fix

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9896b1f
Make the uncaught-exception test's timeout reachable

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de54965
File.renameTo renamed the destination onto itself

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5694e15
Keep unmapped list elements raw -- a regression from the reference fix

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2907915
Release a file stream's native handle if it is never closed

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30d7662
Qualify rooted Windows paths, make close idempotent, list the snapshot cap

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bd2057f
Park the mutator around every blocking stdio call, not just read and write

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0c96b7b
Answer null for an environment name holding a NUL; decline the rest

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9f7d96b
Park the seeks too, and let the thread benchmark exit

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4729dea

Commits on Sep 6, 2026

Check point the backend throughput work in progress

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474ca03
Bring the exactly-once allocation profile into the backend branch

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3a4de13
Stop copying the borrowed read buffer on every keep-alive request

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ae06800
Sync the allocation-size histogram's bucket claim with the PR branch

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9b26594
Reuse one Request per connection instead of allocating one per request

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13f2758

Commits on Sep 7, 2026

Set the backend's 4MB collection floor at build time

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7b7f5dc
Merge remote-tracking branch 'origin/master' into backend-throughput
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c58e9d5
Encode the response head's fixed bytes once, not per request

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b2ccd94
Free a virtual thread's VM state, and let a handler answer without allocating

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78a3659
Stripe the served-requests counter instead of contending one atomic

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381ff91
Keep a connection armed instead of re-arming it on every park

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0bb663c
Compare the request line against bytes, not against Strings

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76b67c6
Record which half of the /json gap was real

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aa28dee

Commits on Sep 8, 2026

Give back the SATB log once the burst that sized it is over

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b73bfe8
Answer a JSON request off the pooled Response too

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6e71282
Give MapBench the copyright header the gate requires

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ed52aaf
Build the backend runtime as part of the reactor

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3788f55
Merge remote-tracking branch 'origin/master' into backend-throughput
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897bcfa
Document the backend, and what it is not for

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0c8ee7e
Generate a backend module with the app

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3f6b082
Ship a backend module in initializr downloads

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ca81184
Give the archetype's backend handler the copyright header

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751b6c2
Validate the backend module in the initializr artifact too

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872f89b
Make the backend chapter a chapter rather than a pitch

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afb9127
Refuse an archive entry that unpacks outside its target directory

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d943d5e
Close the framing, decoding and binding holes review found

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812a43d
Give each HTTP/2 stream its own response body, and cap it

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a5e778e
Open static files beneath the root instead of checking afterwards

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762bbbd
Backend: address the second codex review round

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99230cd
Backend: decode chunked replies, and fail packaging with the real reason

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0e0b139
Backend: address the third codex review round

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aa3436d
Backend: address the fourth codex review round

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e19f7b7
Backend: stream static files over HTTP/2 instead of buffering them

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089bb79
Backend: address the fifth codex review round

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516ea0b
Backend: address the sixth codex review round

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6d5125b
Backend: address the seventh codex review round

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87bc8f4
Backend: address the eighth codex review round

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24e3188
Backend: address the ninth codex review round

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94367c1
Backend: address the tenth codex review round

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a6825b7
Backend: address the eleventh codex review round

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720e6f7
Backend: address the twelfth codex review round

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fc62823
Backend: repair the archetype XML, and guard the second head path

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4685a04
Backend: put TLS on the pool, and stop claiming what the mode does not do

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06d0d27
Backend: reflow the command correction in the generated server

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61a6d79
Backend: repair the write path my non-blocking change broke

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b4f3a6a
Backend: routes are annotated methods, and the build writes the main

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dc4cdd4
Backend: test what a slow client does, and fix what that found

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654651e
Backend: run the self-test on the arm that ships

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85c043b
Backend: bound every native buffer slice, not just the one that was reported

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84e72b6
Backend: stop trusting a bucket name, and stop freeing sessions still in use

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189f23e
Backend: a status can forbid a body, and a refused result is not a delivered one

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c166cf0
Backend: matched rows are not changed rows, and a dotted bucket needs a path

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0d41c39
Backend: SIGPIPE must not kill a runtime that never bound a listener

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f0e81c0
Backend: a slow head, a short secret, and a second virtual-thread server

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b8cad00
Backend: hold the HTTP/2 session for the whole turn, and bound what it queues

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7bad982
Backend: cn1:backend-package could not link, and three narrower refusals

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08d7ef5
Backend: yield across DNS, and stop the dev loop diverging from the target

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2fdb7b4
Backend: the Date fix did not work, and now a test says so

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6b0989f

Commits on Sep 9, 2026

Backend: a port the packaged server accepted and the dev loop refused

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f76114f
Backend: the outbound port had the same hole I had just reasoned away

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06b1bcd
Backend: a Connection option is a token, not a substring

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59094a8
Backend: bound the body by RATE, and stop losing inherited DTO fields

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23131d8
Backend: cover the three generator fixes I shipped without tests

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b62f253
Backend: overlap is not equality, and a narrowed integer is not the one sent

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6f53451
Merge master into backend-throughput

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5b845aa
Backend: the chunked path had the hole the fixed-length one just lost

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a406bf3
Backend: make the two generators agree, and refuse a return they cannot encode

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6af414c
Backend: a stored hash of "pbkdf2$1$$" accepted every password

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fee09b2
Backend: a fresh clone could not build at all

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bc42e2f
Backend: nothing shed a pooled connection once the reactor had it back

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e0dcfd1
GC probe: the release wait was sized for four markers, not one

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3c65956
Backend: exact decimals, matching transaction modes, real field names

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7d7cb54
Backend: bound what is outstanding, not what was just handed over

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943a2d1
GC probe: correct the rationale -- the wait was not the problem

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e1f4fe8
GC: say when a host cannot release pages at all, and read it in the test

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aa5da6c
Backend: redirects, unresolved invocations, and encoded parameter names

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b37c044
Backend: bound h2 headers and descriptors, and two silent value changes

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6abaaee
Backend: stop refusing the most ordinary route pair, and two exactness fixes

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2a1dc0f
GC: a standing dead-thread demand must not wait out the long idle

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eb32944
Backend: finish four fixes that were only done on one side

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a81834e
Backend: make the annotations honest, and stop trusting "java."

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76b8350
Backend: 205 and 304 framing, body element types, and interim statuses

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0b22afd
Backend: check the file cap before spending one, and two narrowing fixes

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99a14f4
Backend: the two JSON writers disagreed about Float, and a relative prefix

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2b45ff6
Contracts: the same route rules the controller half already had

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583e992
Merge remote-tracking branch 'origin/master' into backend-throughput
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e7d35f4
Android: the ComponentName guard stands on its own after the gate was rescoped

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1ca4b72
Android: restore the file's CRLF endings, which my edit had stripped

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ca43dca
Gates: a native check that could pass over nothing, and two decode fixes

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44603eb
Backend: a float that does not fit, and a resource that is staged but unreadable

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0c18458
Backend: an empty PUT, a deadline on progress, and a 416 that was not one

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19ec6ba
Backend: bound response bodies process-wide, and stop inventing dates

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d8abc37
Backend: sweep the locale-sensitive folds, not just the reported one

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8141d2d
Backend: bound inbound bytes process-wide, and let sqlite=false build

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1cdb850
Backend: stop believing Content-Length before the body exists

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e954b46
Controllers: an empty numeric value is not an omission

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ecfc128
HTTP/2: charge header bytes before the rejections, not after them

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95ea0de
HTTP/2: the request structure is memory too; and run what the generator chose

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a522d42
Web: CURLOPT_PATH_AS_IS was guarded by an #ifdef that never fires

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9a6dc4a
Backend: the locale sweep that 8141d2d70d claimed but did not contain

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7308074
Backend: a download bigger than byte[], nested elements, and h2 HEAD

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a9e6948
Backend: bound uploads in flight, and check what a map body really holds

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5328e4b
Controllers: returning a Response never worked, and nesting one is not a Response

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68b7952
Backend: three holes left by the last three fixes

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2b615ed
Backend: an empty value is not a false, and a 204 has no length to report

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f8dabf2
Backend: stop coercing what the client got wrong, and refuse a dead route

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3e368f2
HTTP: sweep deadlines on a busy host, and grow the tables at accept

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957432d
Backend: test the server with ParparVM as the client

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Backend: seven review findings, each with the test that shows it

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d82f76a
CI: prune apt sources by origin, and do it before Playwright's apt

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e09d000
CI: the apt prune deleted the distribution; keep it, and check that it did

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6947d28
Controllers: the HEAD fallback's own clash, map keys, and infinite defaults

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6af8168
Backend: reserve upload memory before taking it, and two more overflows

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5731889
Backend: the h2 body ceiling is a reservation, and wildcards are read once

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34cf878
Processors: two false refusals and one that was missing

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342b4dc
Backend: chunked uploads are charged, bodies must be UTF-8, map keys are keys

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a08c4d9

Commits on Sep 10, 2026

Re-sync the PR with the branch

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8f5a82c
Backend: a would-block read is not a hangup, and shutdown frees parked threads

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9b6f576
Contracts: a JSON string is not a number

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fef854e
Processors: incremental builds, route shapes, and a null password

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a0ed316
Backend: a tunable that would divide by zero falls back instead

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f6be74d
Backend: descriptor accounting, an atomic file ceiling, and a Windows root

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0d8dd03
Generated routes: a malformed escape is a 400, and Tcp refuses a negative timeout

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Backend: two more arm divergences, and an inherited Writable

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