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cpython/Include/internal/pycore_tstate.h

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gh-112538: Add internal-only _PyThreadStateImpl "wrapper" for PyThreadState (gh-112560) Every PyThreadState instance is now actually a _PyThreadStateImpl. It is safe to cast from `PyThreadState*` to `_PyThreadStateImpl*` and back. The _PyThreadStateImpl will contain fields that we do not want to expose in the public C API.
2023-12-07 14:11:45 -05:00
#ifndef Py_INTERNAL_TSTATE_H
#define Py_INTERNAL_TSTATE_H
#ifdef __cplusplus
extern "C" {
#endif
#ifndef Py_BUILD_CORE
# error "this header requires Py_BUILD_CORE define"
#endif
gh-111968: Introduce _PyFreeListState and _PyFreeListState_GET API (gh-113584)
2024-01-10 08:04:41 +09:00
#include "pycore_freelist.h" // struct _Py_freelist_state
gh-112532: Use separate mimalloc heaps for GC objects (gh-113263) * gh-112532: Use separate mimalloc heaps for GC objects In `--disable-gil` builds, we now use four separate heaps in anticipation of using mimalloc to find GC objects when the GIL is disabled. To support this, we also make a few changes to mimalloc: * `mi_heap_t` and `mi_tld_t` initialization is split from allocation. This allows us to have a `mi_tld_t` per-`PyThreadState`, which is important to keep interpreter isolation, since the same OS thread may run in multiple interpreters (using different PyThreadStates.) * Heap abandoning (mi_heap_collect_ex) can now be called from a different thread than the one that created the heap. This is necessary because we may clear and delete the containing PyThreadStates from a different thread during finalization and after fork(). * Use enum instead of defines and guard mimalloc includes. * The enum typedef will be convenient for future PRs that use the type. * Guarding the mimalloc includes allows us to unconditionally include pycore_mimalloc.h from other header files that rely on things like `struct _mimalloc_thread_state`. * Only define _mimalloc_thread_state in Py_GIL_DISABLED builds
2023-12-26 11:53:20 -05:00
#include "pycore_mimalloc.h" // struct _mimalloc_thread_state
gh-110481: Implement inter-thread queue for biased reference counting (#114824) Biased reference counting maintains two refcount fields in each object: `ob_ref_local` and `ob_ref_shared`. The true refcount is the sum of these two fields. In some cases, when refcounting operations are split across threads, the ob_ref_shared field can be negative (although the total refcount must be at least zero). In this case, the thread that decremented the refcount requests that the owning thread give up ownership and merge the refcount fields.
2024-02-09 17:08:32 -05:00
#include "pycore_brc.h" // struct _brc_thread_state
gh-112532: Use separate mimalloc heaps for GC objects (gh-113263) * gh-112532: Use separate mimalloc heaps for GC objects In `--disable-gil` builds, we now use four separate heaps in anticipation of using mimalloc to find GC objects when the GIL is disabled. To support this, we also make a few changes to mimalloc: * `mi_heap_t` and `mi_tld_t` initialization is split from allocation. This allows us to have a `mi_tld_t` per-`PyThreadState`, which is important to keep interpreter isolation, since the same OS thread may run in multiple interpreters (using different PyThreadStates.) * Heap abandoning (mi_heap_collect_ex) can now be called from a different thread than the one that created the heap. This is necessary because we may clear and delete the containing PyThreadStates from a different thread during finalization and after fork(). * Use enum instead of defines and guard mimalloc includes. * The enum typedef will be convenient for future PRs that use the type. * Guarding the mimalloc includes allows us to unconditionally include pycore_mimalloc.h from other header files that rely on things like `struct _mimalloc_thread_state`. * Only define _mimalloc_thread_state in Py_GIL_DISABLED builds
2023-12-26 11:53:20 -05:00
gh-112538: Add internal-only _PyThreadStateImpl "wrapper" for PyThreadState (gh-112560) Every PyThreadState instance is now actually a _PyThreadStateImpl. It is safe to cast from `PyThreadState*` to `_PyThreadStateImpl*` and back. The _PyThreadStateImpl will contain fields that we do not want to expose in the public C API.
2023-12-07 14:11:45 -05:00
gh-76785: Improved Subinterpreters Compatibility with 3.12 (gh-115424) For the most part, these changes make is substantially easier to backport subinterpreter-related code to 3.12, especially the related modules (e.g. _xxsubinterpreters). The main motivation is to support releasing a PyPI package with the 3.13 capabilities compiled for 3.12. A lot of the changes here involve either hiding details behind macros/functions or splitting up some files.
2024-02-13 14:56:49 -07:00
static inline void
_PyThreadState_SetWhence(PyThreadState *tstate, int whence)
{
tstate->_whence = whence;
}
gh-112538: Add internal-only _PyThreadStateImpl "wrapper" for PyThreadState (gh-112560) Every PyThreadState instance is now actually a _PyThreadStateImpl. It is safe to cast from `PyThreadState*` to `_PyThreadStateImpl*` and back. The _PyThreadStateImpl will contain fields that we do not want to expose in the public C API.
2023-12-07 14:11:45 -05:00
// Every PyThreadState is actually allocated as a _PyThreadStateImpl. The
// PyThreadState fields are exposed as part of the C API, although most fields
// are intended to be private. The _PyThreadStateImpl fields not exposed.
typedef struct _PyThreadStateImpl {
// semi-public fields are in PyThreadState.
PyThreadState base;
gh-112532: Use separate mimalloc heaps for GC objects (gh-113263) * gh-112532: Use separate mimalloc heaps for GC objects In `--disable-gil` builds, we now use four separate heaps in anticipation of using mimalloc to find GC objects when the GIL is disabled. To support this, we also make a few changes to mimalloc: * `mi_heap_t` and `mi_tld_t` initialization is split from allocation. This allows us to have a `mi_tld_t` per-`PyThreadState`, which is important to keep interpreter isolation, since the same OS thread may run in multiple interpreters (using different PyThreadStates.) * Heap abandoning (mi_heap_collect_ex) can now be called from a different thread than the one that created the heap. This is necessary because we may clear and delete the containing PyThreadStates from a different thread during finalization and after fork(). * Use enum instead of defines and guard mimalloc includes. * The enum typedef will be convenient for future PRs that use the type. * Guarding the mimalloc includes allows us to unconditionally include pycore_mimalloc.h from other header files that rely on things like `struct _mimalloc_thread_state`. * Only define _mimalloc_thread_state in Py_GIL_DISABLED builds
2023-12-26 11:53:20 -05:00
#ifdef Py_GIL_DISABLED
struct _mimalloc_thread_state mimalloc;
gh-111968: Rename freelist related struct names to Eric's suggestion (gh-115329)
2024-02-14 09:32:51 +09:00
struct _Py_object_freelists freelists;
gh-110481: Implement inter-thread queue for biased reference counting (#114824) Biased reference counting maintains two refcount fields in each object: `ob_ref_local` and `ob_ref_shared`. The true refcount is the sum of these two fields. In some cases, when refcounting operations are split across threads, the ob_ref_shared field can be negative (although the total refcount must be at least zero). In this case, the thread that decremented the refcount requests that the owning thread give up ownership and merge the refcount fields.
2024-02-09 17:08:32 -05:00
struct _brc_thread_state brc;
gh-112532: Use separate mimalloc heaps for GC objects (gh-113263) * gh-112532: Use separate mimalloc heaps for GC objects In `--disable-gil` builds, we now use four separate heaps in anticipation of using mimalloc to find GC objects when the GIL is disabled. To support this, we also make a few changes to mimalloc: * `mi_heap_t` and `mi_tld_t` initialization is split from allocation. This allows us to have a `mi_tld_t` per-`PyThreadState`, which is important to keep interpreter isolation, since the same OS thread may run in multiple interpreters (using different PyThreadStates.) * Heap abandoning (mi_heap_collect_ex) can now be called from a different thread than the one that created the heap. This is necessary because we may clear and delete the containing PyThreadStates from a different thread during finalization and after fork(). * Use enum instead of defines and guard mimalloc includes. * The enum typedef will be convenient for future PRs that use the type. * Guarding the mimalloc includes allows us to unconditionally include pycore_mimalloc.h from other header files that rely on things like `struct _mimalloc_thread_state`. * Only define _mimalloc_thread_state in Py_GIL_DISABLED builds
2023-12-26 11:53:20 -05:00
#endif
gh-112538: Add internal-only _PyThreadStateImpl "wrapper" for PyThreadState (gh-112560) Every PyThreadState instance is now actually a _PyThreadStateImpl. It is safe to cast from `PyThreadState*` to `_PyThreadStateImpl*` and back. The _PyThreadStateImpl will contain fields that we do not want to expose in the public C API.
2023-12-07 14:11:45 -05:00
} _PyThreadStateImpl;
#ifdef __cplusplus
}
#endif
#endif /* !Py_INTERNAL_TSTATE_H */
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