[lworld] Integrated: 8354404: [lworld] compiler/startup/StartupOutput.java crashes during AdapterHandlerLibrary::initialize() due to too little CodeCacheSize

[Marc Chevalier]

On Wed, 16 Jul 2025 14:59:48 GMT, Marc Chevalier <mchevalier at openjdk.org> wrote:

> Experimentally, replacing 800 with 2000 is needed to have this test pass on all platform. Somehow, while 1300 seems ok on my Linux (while having a fair share of "CodeCache is full. Compiler has been disabled." messages), Windows boxes seems to struggle even with 1800. Not sure why: isn't the size of the things in the code cache (that is, the code), depends mostly on the encoding of instructions, that is dependent on architecture, not OS? Anyway, it happens reliably, so something had to be done!
> 
> Let's compare (with debug builds so I can use `CodeCacheMinimumUseSpace`, that is 1200k by default on debug builds), for various values of `ReservedCodeCacheSize` (in k), when running `-version`. For mainline:
> - [4, 28]
>   ```
>   # There is insufficient memory for the Java Runtime Environment to continue.
>   # Native memory allocation (malloc) failed to allocate 3000 bytes. Error detail: `CodeCache: no room for StubRoutines` (continuation stubs)
>   ```
>   coming from
>   - `report_should_not_call(char const*, int)`
>   - `initialize_stubs(BlobId, int, int, char const*, char const*, char const*)`
>   - `StubRoutines::initialize_continuation_stubs()`
>   - `continuation_stubs_init()`
>   - `init_globals()`
>   
>   with `3000` being `20000` for `ReservedCodeCacheSize` between 5 and 24, and being `500` for `ReservedCodeCacheSize` = 4 (the minimum).
> 
> - [29, 32] `fatal error: Initial size of CodeCache is too small`
>   https://github.com/openjdk/jdk/blob/b787ad6f690df5c82a1efc5ccac658a9238ff201/src/hotspot/share/code/codeBlob.cpp#L579
>   coming from
>   - `RuntimeStub::new_runtime_stub(char const*, CodeBuffer*, short, int, OopMapSet*, bool, bool)`
>   - `SharedRuntime::generate_jfr_return_lease()`
>   - `SharedRuntime::generate_jfr_stubs()`
>   - `init_globals()`
> 
> - [33, 1112]
>   ```
>   # There is insufficient memory for the Java Runtime Environment to continue.
>   # Native memory allocation (malloc) failed to allocate 1108928 bytes. Error detail: CodeCache: no room for Interpreter
>   ```
>   - `...`
>   - `report_should_not_call(char const*, int)`
>   - `StubQueue::StubQueue(StubInterface*, int, Mutex*, char const*)`
>   - `TemplateInterpreter::initialize_stub()`
>   - `interpreter_init_stub()`
>   - `init_globals()`
> 
> - [1113, 1116] SIGSEGV
>   - `CodeSection::emit_int8(unsigned char)`
>   - `AbstractAssembler::emit_int8(int)`
>   - `Assembler::push(Register)`
>   - `MacroAssembler::enter()`
>   - `RegisterSaver::save_live_registers(MacroAssembler*, int, int*, bool)`
>   - `SharedRuntime::generate_resolve_blob(StubId, unsigne...

This pull request has now been integrated.

Changeset: 5e55edab
Author:    Marc Chevalier <mchevalier at openjdk.org>
Committer: Tobias Hartmann <thartmann at openjdk.org>
URL:       https://git.openjdk.org/valhalla/commit/5e55edab3da19ddc6a061bd4c255aa4e415bb078
Stats:     3 lines in 2 files changed: 0 ins; 2 del; 1 mod

8354404: [lworld] compiler/startup/StartupOutput.java crashes during AdapterHandlerLibrary::initialize() due to too little CodeCacheSize

Reviewed-by: thartmann

-------------

PR: https://git.openjdk.org/valhalla/pull/1509