Now that the compilation model of noncopyable types is enabled everywhere,
and one can enable the feature for specific modules, we no longer need a
separate build-script/CMake option to enable it globally. Remove it all.
We don't currently support building resilient relative protocol witness tables.
One might want to build with relative witness tables but not need
resilient protocols. Allow for that scenario.
Add a test configuration to test library-evolution + fragile resilient
protocols + relative protocol witness tables.
This patch introduces `--enable-experimental-noncopyable-generics` for
the build script. It replaces
`--swift-stdlib-experimental-noncopyable-generics`
The old build option only enables the feature when building the
stdlib, but if we've built the stdlib with NoncopyableGenerics, the
compiler should be hardwired to have that feature enabled, too.
This patch also introduces the `noncopyable_generics` lit parameter, so
that tests assuming the system was built with the feature can live
in-tree and be tested, if they specify `REQUIRES: noncopyable_generics`.
which executor for which type of setting, is consolidated and we have a
single knob we use to determine when to use dispatch as our global
executor.
Radar-Id: rdar://problem/119416196
This is needed for some Apple internal configurations that needs to build the
standard library in pieces to construct an SDK.
Given the limited audience, only introduce this flag in CMake.
Addresses rdar://118178539
Add a `SWIFT_STDLIB_OVERRIDABLE_RETAIN_RELEASE` CMake option. When set to true, swift_retain/release and the other functions in InstrumentsSupport.h can be overridden by setting the appropriate global function pointer, as is already the case. When set to false, those function pointers are removed and the functions always go into the default implementation.
Set `SWIFT_STDLIB_OVERRIDABLE_RETAIN_RELEASE` to false when building the minimal stdlib, and set it to true otherwise by default.
rdar://115987924
This would be needed to stop using `swift-api-extract` in some
internal configurations.
Given the limited scope, only add this as a CMake flag.
Addresses rdar://117019309
Header search path for Swift shims is "usr/lib/swift". Don't rely on
clang looking for module maps in immediate subdirectories like "shims"
but add a module map to "usr/lib/swift" sourcing "shims" modules.
rdar://106677321
As of CMake 3.25, there are now global variables `LINUX=1`, `ANDROID=1`,
etc. These conflict with expressions that used these names as unquoted
strings in positions where CMake accepts 'variable|string', for example:
- `if(sdk STREQUAL LINUX)` would fail, because `LINUX` is now defined and
expands to 1, where it would previously coerce to a string.
- `if(${sdk} STREQUAL "LINUX")` would fail if `sdk=LINUX`, because the
left-hand side expands twice.
In this patch, I looked for a number of patterns to fix up, sometimes a
little defensively:
- Quoted right-hand side of `STREQUAL` where I was confident it was
intended to be a string literal.
- Removed manual variable expansion on left-hand side of `STREQUAL`,
`MATCHES` and `IN_LIST` where I was confident it was unintended.
Fixes#65028.
Section scans (for metadata, protocols, etc.) can be costly. This change adds tracing calls to those scans so we can more easily see how much time is spent in these scans and where they're initiated.
This adds an os_signpost implementation controlled by SWIFT_STDLIB_TRACING, and a default empty implementation for when that's disabled.
rdar://110266743
Using single-threaded concurrency was a temporary solution, now that the task-to-thread model actually supports multiple threads, let's switch off of it. Instead, let's introduce a "global executor none" option (implicitly set under the task-to-thread model) to denote that the concurrency model is not using a global executor.
rdar://99448771
Defined SWIFT_STDLIB_TASK_TO_THREAD_MODEL_CONCURRENCY to describe
whether the standard library will use the task-to-thread model for
concurrency. It is true only for freestanding non-Darwin stdlibs.
When it is true, SWIFT_CONCURRENCY_TASK_TO_THREAD_MODEL is defined
during stdlib compilation of both Swift and C++ sources.
Added an option to LangOptions to specify which concurrency model is
used, either standard or task-to-thread. When
SWIFT_STDLIB_TASK_TO_THREAD_MODEL_CONCURRENCY is true, the model is
specified to be task-to-thread.
These are better done via the SwiftConfigureSDK mechanism rather than
how I was doing them previously. Additionally, I've changed the way
that the swift-threading-package option works. In addition to
specifying just a single package name, you can specify it as a CMake
list (i.e. separate by semicolons) of colon-separated `sdk:package`
pairs, e.g. `osx:darwin;linux:pthreads`. You can also override it
for all SDKs and then specify for a given SDK; specifications for a
particular SDK take precedence over the global override. For instance
`pthreads;osx:darwin` says to use `pthreads` except on the OS X SDK
where we should use `darwin`.
Moved all the threading code to one place. Added explicit support for
Darwin, Linux, Pthreads, C11 threads and Win32 threads, including new
implementations of Once for Linux, Pthreads, C11 and Win32.
rdar://90776105
SWIFT_STDLIB_SINGLE_THREADED_RUNTIME is too much of a blunt instrument here.
It covers both the Concurrency runtime and the rest of the runtime, but we'd
like to be able to have e.g. a single-threaded Concurrency runtime while
the rest of the runtime is still thread safe (for instance).
So: rename it to SWIFT_STDLIB_SINGLE_THREADED_CONCURRENCY and make it just
control the Concurrency runtime, then add a SWIFT_STDLIB_THREADING_PACKAGE
setting at the CMake/build-script level, which defines
SWIFT_STDLIB_THREADING_xxx where xxx depends on the chosen threading package.
This is especially useful on systems where there may be a choice of threading
package that you could use.
rdar://90776105
Moved all the threading code to one place. Added explicit support for
Darwin, Linux, Pthreads, C11 threads and Win32 threads, including new
implementations of Once for Linux, Pthreads, C11 and Win32.
rdar://90776105
SWIFT_STDLIB_SINGLE_THREADED_RUNTIME is too much of a blunt instrument here.
It covers both the Concurrency runtime and the rest of the runtime, but we'd
like to be able to have e.g. a single-threaded Concurrency runtime while
the rest of the runtime is still thread safe (for instance).
So: rename it to SWIFT_STDLIB_SINGLE_THREADED_CONCURRENCY and make it just
control the Concurrency runtime, then add a SWIFT_STDLIB_THREADING_PACKAGE
setting at the CMake/build-script level, which defines
SWIFT_STDLIB_THREADING_xxx where xxx depends on the chosen threading package.
This is especially useful on systems where there may be a choice of threading
package that you could use.
rdar://90776105
When SWIFT_COMPACT_ABSOLUTE_FUNCTION_POINTER is enabled, relative direct
pointers whose pointees are functions will be turned into absolute
pointer at compile-time.
Concurrency tracing was enabled depending on the presence of a header
file, but if a similarly named header was found somewhere in the path
that didn't do the same thing, that might cause problems.
Instead, we should have a build time configuration option.
rdar://89787540
This allows the file to be easily included where needed (e.g.
`StandaloneOverlay.cmake`) and reduce the likelihood of miscompilation
due to missing sensible defaults.
As a start, focus on a handful of parameters that got added/modified in
recent PRs.
Addresses rdar://85978195
