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#ifndef DTACT_H
#define DTACT_H
/* Generated with cbindgen:0.29.2 */
/* Warning, this file is autogenerated by cbindgen. Don't modify this manually. */
#include <cstdarg>
#include <cstddef>
#include <cstdint>
#include <cstdlib>
#include <ostream>
#include <new>
namespace dtact {
/*
Number of tasks in a single `TaskChunk`.
*/
constexpr static const size_t CHUNK_SIZE = 32;
/*
Capacity of a worker's local execution queue.
Sized to exactly hold the max queue without global locks.
*/
constexpr static const size_t LOCAL_QUEUE_CAPACITY = 131072;
/*
Mask for local queue index wrap-around.
*/
constexpr static const size_t LOCAL_QUEUE_MASK = (LOCAL_QUEUE_CAPACITY - 1);
/*
Capacity of a single core-to-core mailbox.
MUST be a power of two for bitwise masking.
*/
constexpr static const size_t MAILBOX_CAPACITY = 1024;
/*
Mask for mailbox index wrap-around.
*/
constexpr static const size_t MAILBOX_MASK = (MAILBOX_CAPACITY - 1);
/*
Opaque handle representing a spawned Dtact fiber.
*/
using dtact_handle_t = uint64_t;
/*
Configuration structure for initializing the Dtact runtime from C.
*/
struct dtact_config_t {
/*
Number of hardware worker threads. Set to 0 for auto-detection.
*/
uint32_t mWorkers;
/*
Memory safety level (0-2).
*/
uint8_t mSafetyLevel;
/*
Topology mode (0: `P2PMesh`, 1: Global).
*/
uint8_t mTopologyMode;
/*
Maximum number of concurrent fibers. Set to 0 for default (4096).
*/
uint32_t mFiberCapacity;
/*
Stack size per fiber in bytes. Set to 0 for default (512KB).
*/
uint32_t mStackSize;
dtact_config_t(uint32_t const& aMWorkers,
uint8_t const& aMSafetyLevel,
uint8_t const& aMTopologyMode,
uint32_t const& aMFiberCapacity,
uint32_t const& aMStackSize)
: mWorkers(aMWorkers),
mSafetyLevel(aMSafetyLevel),
mTopologyMode(aMTopologyMode),
mFiberCapacity(aMFiberCapacity),
mStackSize(aMStackSize)
{}
bool operator==(const dtact_config_t& aOther) const {
return mWorkers == aOther.mWorkers &&
mSafetyLevel == aOther.mSafetyLevel &&
mTopologyMode == aOther.mTopologyMode &&
mFiberCapacity == aOther.mFiberCapacity &&
mStackSize == aOther.mStackSize;
}
bool operator!=(const dtact_config_t& aOther) const {
return mWorkers != aOther.mWorkers ||
mSafetyLevel != aOther.mSafetyLevel ||
mTopologyMode != aOther.mTopologyMode ||
mFiberCapacity != aOther.mFiberCapacity ||
mStackSize != aOther.mStackSize;
}
};
/*
Advanced options for spawning a fiber from C FFI.
*/
struct dtact_spawn_options_t {
/*
0: Low, 1: Normal, 2: High, 3: Critical
*/
uint8_t mPriority;
/*
0: `SameCore`, 1: `SameCCX`, 2: `SameNUMA`, 3: Any
*/
uint8_t mAffinity;
/*
0: Compute, 1: IO, 2: Memory, 3: System
*/
uint8_t mKind;
/*
0: `CrossThreadFloat`, 1: `CrossThreadNoFloat`, 2: `SameThreadFloat`, 3: `SameThreadNoFloat`
*/
uint8_t mSwitcher;
dtact_spawn_options_t(uint8_t const& aMPriority,
uint8_t const& aMAffinity,
uint8_t const& aMKind,
uint8_t const& aMSwitcher)
: mPriority(aMPriority),
mAffinity(aMAffinity),
mKind(aMKind),
mSwitcher(aMSwitcher)
{}
bool operator==(const dtact_spawn_options_t& aOther) const {
return mPriority == aOther.mPriority &&
mAffinity == aOther.mAffinity &&
mKind == aOther.mKind &&
mSwitcher == aOther.mSwitcher;
}
bool operator!=(const dtact_spawn_options_t& aOther) const {
return mPriority != aOther.mPriority ||
mAffinity != aOther.mAffinity ||
mKind != aOther.mKind ||
mSwitcher != aOther.mSwitcher;
}
};
extern "C" {
/*
Critical failure handler. Aborts the process if a fiber attempts to
return without properly terminating via the runtime.
*/
void dtact_abort()
;
/*
Blocks the current thread until the specified fiber terminates.
If called from a Dtact fiber, this will natively yield the physical core.
If called from a non-managed thread (e.g., C main), this uses a tiered
spin-loop and futex-wait strategy for zero-CPU idling.
# Panics
* Panics if the runtime is not initialized.
*/
void dtact_await(dtact_handle_t aHandle)
;
/*
Returns the recommended default configuration for the Dtact runtime.
*/
dtact_config_t dtact_default_config()
;
/*
Returns the recommended default options for the Dtact runtime.
*/
dtact_spawn_options_t dtact_default_spawn_options()
;
/*
Launches a C-function as a DTA-V3 stackful Fiber.
# Safety
* `func` must be a valid function pointer.
* `arg` must point to memory that remains valid for the entire duration of the fiber's execution.
Since the fiber is launched asynchronously, the caller's stack may return before the fiber starts.
**Critical**: `arg` must be heap-allocated (and freed within the fiber) or static.
# Panics
* Panics if the runtime is not initialized.
* Panics if the context pool is exhausted.
*/
dtact_handle_t dtact_fiber_launch(void (*aFunc)(void*),
void *aArg)
;
/*
Launches a C-function as a DTA-V3 stackful Fiber with advanced options.
*/
dtact_handle_t dtact_fiber_launch_ext(void (*aFunc)(void*),
void *aArg,
const dtact_spawn_options_t *aOptions)
;
/*
Launches a C-function as a DTA-V3 stackful Fiber with an ownership cleanup callback.
# Safety
* `func` and `cleanup` must be valid function pointers.
* `cleanup` will be called with `arg` once the fiber has finished execution.
# Panics
* Panics if the runtime is not initialized.
* Panics if the context pool is exhausted.
*/
dtact_handle_t dtact_fiber_launch_with_cleanup(void (*aFunc)(void*),
void *aArg,
void (*aCleanup)(void*))
;
/*
Launches a C-function as a DTA-V3 stackful Fiber with an ownership cleanup callback and options.
*/
dtact_handle_t dtact_fiber_launch_with_cleanup_ext(void (*aFunc)(void*),
void *aArg,
void (*aCleanup)(void*),
const dtact_spawn_options_t *aOptions)
;
/*
Frees an argument pointer previously allocated for a fiber.
# Safety
* `arg` must be a valid pointer previously allocated by the C allocator (e.g. `malloc`).
*/
void dtact_free_arg(void *aArg)
;
/*
Initializes the global Dtact runtime singleton.
# Safety
* This function should be called once at application startup.
* `cfg` must be a valid, non-null pointer to a `dtact_config_t` structure.
# Panics
* Panics if the runtime is already initialized or if memory allocation fails.
*/
void *dtact_init(const dtact_config_t *aCfg)
;
/*
Signals all worker threads to shutdown and waits for them to terminate.
This call blocks until all hardware worker threads have exited.
# Panics
* Panics if the runtime is not initialized.
*/
void dtact_run(void *aRt)
;
/*
Signals the cooperative shutdown of all Dtact worker threads.
*/
void dtact_shutdown()
;
} // extern "C"
} // namespace dtact
#endif // DTACT_H