Changes in engine.h

cb51a4f2 - Enable introspecting pulley at runtime (#9886)

Mon, 30 Dec 2024 19:51:45 +0000

Enable introspecting pulley at runtime (#9886)This commit includes a few assorted changes to improve detection ofwhether Wasmtime is using Pulley at runtime:* A new `Engine::is_pulley` API is added.* A new `wasmtime_engine_is_pulley` C API is added.* The `Config::target` method is now available regardless of compilation features.* The `Engine::target` method now consults the `Config` to have the same fallback logic for when a target is not explicitly configured.cc #1980 List of files: /wasmtime-44.0.1/crates/c-api/include/wasmtime/engine.h

9e22c4e7 - Expose Engine::clone to c-api (#8907)

Mon, 08 Jul 2024 14:34:23 +0000

Expose Engine::clone to c-api (#8907) List of files: /wasmtime-44.0.1/crates/c-api/include/wasmtime/engine.h

f8fee938 - add clang format (#7601)

Wed, 29 Nov 2023 18:39:04 +0000

add clang format (#7601)* add clang-formatWe chose WebKit style because out of all the builtin styles it seems theclosest to what already exists in wasmtime.Signed-off-by: Tyler Rockwood * c-api: don't reorder headersThe order here mattersSigned-off-by: Tyler Rockwood * c-api: apply clang-formatSigned-off-by: Tyler Rockwood * fiber: apply clang-formatSigned-off-by: Tyler Rockwood * runtime: apply clang-formatSigned-off-by: Tyler Rockwood * examples: apply clang formatSigned-off-by: Tyler Rockwood * tests: apply clang-formatSigned-off-by: Tyler Rockwood * ci: add clang-format checksSigned-off-by: Tyler Rockwood * clang-format: keep braces on the same lineThis is more the existing styleSigned-off-by: Tyler Rockwood * remove clang-formatJust use the tool defaults (LLVM)Signed-off-by: Tyler Rockwood * Fix ci nameSigned-off-by: Tyler Rockwood * manually reformat a couple of commentsprtest:fullSigned-off-by: Tyler Rockwood * disable formatting for doc-wasm.hSigned-off-by: Tyler Rockwood * manually reformat wasmtime.hSigned-off-by: Tyler Rockwood * disable formattingTo prevent a link from being brokenSigned-off-by: Tyler Rockwood * examples: fixing build commandsSigned-off-by: Tyler Rockwood * fix parameter commentSigned-off-by: Tyler Rockwood ---------Signed-off-by: Tyler Rockwood List of files: /wasmtime-44.0.1/crates/c-api/include/wasmtime/engine.h

c22033bf - Delete historical interruptable support in Wasmtime (#3925)

Mon, 14 Mar 2022 20:25:11 +0000

Delete historical interruptable support in Wasmtime (#3925)* Delete historical interruptable support in Wasmtime This commit removes the `Config::interruptable` configuration along with the `InterruptHandle` type from the `wasmtime` crate. The original support for adding interruption to WebAssembly was added pretty early on in the history of Wasmtime when there was no other method to prevent an infinite loop from the host. Nowadays, however, there are alternative methods for interruption such as fuel or epoch-based interruption. One of the major downsides of `Config::interruptable` is that even when it's not enabled it forces an atomic swap to happen when entering WebAssembly code. This technically could be a non-atomic swap if the configuration option isn't enabled but that produces even more branch-y code on entry into WebAssembly which is already something we try to optimize. Calling into WebAssembly is on the order of a dozens of nanoseconds at this time and an atomic swap, even uncontended, can add up to 5ns on some platforms. The main goal of this PR is to remove this atomic swap on entry into WebAssembly. This is done by removing the `Config::interruptable` field entirely, moving all existing consumers to epochs instead which are suitable for the same purposes. This means that the stack overflow check is no longer entangled with the interruption check and perhaps one day we could continue to optimize that further as well. Some consequences of this change are: * Epochs are now the only method of remote-thread interruption. * There are no more Wasmtime traps that produces the `Interrupted` trap code, although we may wish to move future traps to this so I left it in place. * The C API support for interrupt handles was also removed and bindings for epoch methods were added. * Function-entry checks for interruption are a tiny bit less efficient since one check is performed for the stack limit and a second is performed for the epoch as opposed to the `Config::interruptable` style of bundling the stack limit and the interrupt check in one. It's expected though that this is likely to not really be measurable. * The old `VMInterrupts` structure is renamed to `VMRuntimeLimits`. List of files: /wasmtime-44.0.1/crates/c-api/include/wasmtime/engine.h