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files >> //proc/thread-self/root/opt/cloudlinux/alt-php82/root/usr/include/php/Zend/zend_fibers.h
/* +----------------------------------------------------------------------+ | Zend Engine | +----------------------------------------------------------------------+ | Copyright (c) Zend Technologies Ltd. (http://www.zend.com) | +----------------------------------------------------------------------+ | This source file is subject to version 2.00 of the Zend license, | | that is bundled with this package in the file LICENSE, and is | | available through the world-wide-web at the following url: | | http://www.zend.com/license/2_00.txt. | | If you did not receive a copy of the Zend license and are unable to | | obtain it through the world-wide-web, please send a note to | | license@zend.com so we can mail you a copy immediately. | +----------------------------------------------------------------------+ | Authors: Aaron Piotrowski <aaron@trowski.com> | | Martin Schröder <m.schroeder2007@gmail.com> | +----------------------------------------------------------------------+ */ #ifndef ZEND_FIBERS_H #define ZEND_FIBERS_H #include "zend_API.h" #include "zend_types.h" #define ZEND_FIBER_GUARD_PAGES 1 #define ZEND_FIBER_DEFAULT_C_STACK_SIZE (4096 * (((sizeof(void *)) < 8) ? 256 : 512)) #define ZEND_FIBER_VM_STACK_SIZE (1024 * sizeof(zval)) BEGIN_EXTERN_C() typedef enum { ZEND_FIBER_STATUS_INIT, ZEND_FIBER_STATUS_RUNNING, ZEND_FIBER_STATUS_SUSPENDED, ZEND_FIBER_STATUS_DEAD, } zend_fiber_status; typedef enum { ZEND_FIBER_FLAG_THREW = 1 << 0, ZEND_FIBER_FLAG_BAILOUT = 1 << 1, ZEND_FIBER_FLAG_DESTROYED = 1 << 2, } zend_fiber_flag; typedef enum { ZEND_FIBER_TRANSFER_FLAG_ERROR = 1 << 0, ZEND_FIBER_TRANSFER_FLAG_BAILOUT = 1 << 1 } zend_fiber_transfer_flag; void zend_register_fiber_ce(void); void zend_fiber_init(void); void zend_fiber_shutdown(void); extern ZEND_API zend_class_entry *zend_ce_fiber; typedef struct _zend_fiber_stack zend_fiber_stack; /* Encapsulates data needed for a context switch. */ typedef struct _zend_fiber_transfer { /* Fiber that will be switched to / has resumed us. */ zend_fiber_context *context; /* Value to that should be send to (or was received from) a fiber. */ zval value; /* Bitmask of flags defined in enum zend_fiber_transfer_flag. */ uint8_t flags; } zend_fiber_transfer; /* Coroutine functions must populate the given transfer with a new context * and (optional) data before they return. */ typedef void (*zend_fiber_coroutine)(zend_fiber_transfer *transfer); typedef void (*zend_fiber_clean)(zend_fiber_context *context); struct _zend_fiber_context { /* Pointer to boost.context or ucontext_t data. */ void *handle; /* Pointer that identifies the fiber type. */ void *kind; /* Entrypoint function of the fiber. */ zend_fiber_coroutine function; /* Cleanup function for fiber. */ zend_fiber_clean cleanup; /* Assigned C stack. */ zend_fiber_stack *stack; /* Fiber status. */ zend_fiber_status status; /* Observer state */ zend_execute_data *top_observed_frame; /* Reserved for extensions */ void *reserved[ZEND_MAX_RESERVED_RESOURCES]; }; struct _zend_fiber { /* PHP object handle. */ zend_object std; /* Flags are defined in enum zend_fiber_flag. */ uint8_t flags; /* Native C fiber context. */ zend_fiber_context context; /* Fiber that resumed us. */ zend_fiber_context *caller; /* Fiber that suspended us. */ zend_fiber_context *previous; /* Callback and info / cache to be used when fiber is started. */ zend_fcall_info fci; zend_fcall_info_cache fci_cache; /* Current Zend VM execute data being run by the fiber. */ zend_execute_data *execute_data; /* Frame on the bottom of the fiber vm stack. */ zend_execute_data *stack_bottom; /* Active fiber vm stack. */ zend_vm_stack vm_stack; /* Storage for fiber return value. */ zval result; }; /* These functions may be used to create custom fiber objects using the bundled fiber switching context. */ ZEND_API bool zend_fiber_init_context(zend_fiber_context *context, void *kind, zend_fiber_coroutine coroutine, size_t stack_size); ZEND_API void zend_fiber_destroy_context(zend_fiber_context *context); ZEND_API void zend_fiber_switch_context(zend_fiber_transfer *transfer); ZEND_API void zend_fiber_switch_block(void); ZEND_API void zend_fiber_switch_unblock(void); ZEND_API bool zend_fiber_switch_blocked(void); END_EXTERN_C() static zend_always_inline zend_fiber *zend_fiber_from_context(zend_fiber_context *context) { ZEND_ASSERT(context->kind == zend_ce_fiber && "Fiber context does not belong to a Zend fiber"); return (zend_fiber *)(((char *) context) - XtOffsetOf(zend_fiber, context)); } static zend_always_inline zend_fiber_context *zend_fiber_get_context(zend_fiber *fiber) { return &fiber->context; } #endif
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