Fix GH-11121: ReflectionFiber segfault

Closes GH-12391.

Co-authored-by: Aaron Piotrowski <aaron@trowski.com>

Fix GH-10496: Fibers must not be garbage collected while implicitly suspended by resumption of another fiber

Fix colletion of unfinished function call in fibers

Fixes GH-10496.

Co-authored-by: Bob Weinand <bobwei9@hotmail.com>

Fix GH-10437: Set active fiber to null on bailout (#10443)

Handle non-INDIRECT symbol table entries in zend_fiber_object_gc() (#10386)

Fixes GH-10340

GC fiber unfinished executions (#9810)

Fix GH-10249: Assertion `size >= page_size + 1 * page_size' failed.

Co-authored-by: Changochen <changochen1@gmail.com>

Closes GH-10284

Add IBT support for fiber

Indirect Branch Tracking (IBT) is part of Intel's Control-Flow
Enforcement Technology (CET). IBT is hardware based, forward edge
Control-Flow-Integrity mech

Add IBT support for fiber

Indirect Branch Tracking (IBT) is part of Intel's Control-Flow
Enforcement Technology (CET). IBT is hardware based, forward edge
Control-Flow-Integrity mechanism where any indirect CALL/JMP must target
an ENDBR instruction or suffer #CP.

This commit adds IBT support for fiber:
1. Add endbr32/64 in assembly
2. Inform compiler jump_fcontext may return via indirect branch

Furthermore:
gcc support CET since v8.1 and set it to default since gcc 11. That is,
the ELF header of sapi/cli/php has a property named IBT. However, such
property is lost since PHP8.1 because the assembly introduced by Fiber.
This commit also fixes this.

Closes GH-8339

Signed-off-by: Chen, Hu <hu1.chen@intel.com>
Co-authored-by: Christoph M. Becker <cmbecker69@gmx.de>

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Fix zend_fibers.c build with ZEND_FIBER_UCONTEXT

Avoids (Solaris SPARC) issue:
zend_fibers.c:77:9: error: unknown type name 'ucontext_t'

Closes GH-7773.

Don't return reference from Fiber::getReturn()

Even if the fiber function returns by reference, we must return
a value from Fiber::getReturn() to satisfy the function signature.

Don't return reference from Fiber::getReturn()

Even if the fiber function returns by reference, we must return
a value from Fiber::getReturn() to satisfy the function signature.

Fixes oss-fuzz #36417.

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more fiber notifications (#7293)

drop unused header in fibers

Add ZEND_ACC_NOT_SERIALIZABLE flag

This prevents serialization and unserialization of a class and its
children in a way that does not depend on the zend_class_serialize_deny
and zend

Add ZEND_ACC_NOT_SERIALIZABLE flag

This prevents serialization and unserialization of a class and its
children in a way that does not depend on the zend_class_serialize_deny
and zend_class_unserialize_deny handlers that will be going away
in PHP 9 together with the Serializable interface.

In stubs, `@not-serializable` can be used to set this flag.

This patch only uses the new flag for a handful of Zend classes,
converting the remainder is left for later.

Closes GH-7249.
Fixes bug #81111.

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Fiber ucontext support (#7226)

Co-authored-by: Martin Schröder <m.schroeder2007@gmail.com>

Fixed some spaces used instead of tabs

Allow creating Graceful/UnwindExit and use when destroying a fiber (#7174)

Direct creation of GracefulExit allows the the special exception object to be transfered and thrown into a destroye

Allow creating Graceful/UnwindExit and use when destroying a fiber (#7174)

Direct creation of GracefulExit allows the the special exception object to be transfered and thrown into a destroyed fiber using the same path as any other exception thrown into a fiber instead of needing to check for a flag.

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Implemented Fiber GC handler

Remove copying of fiber result to transfer value

Removes unnecessary copying of fiber return value to transfer value. This zval was not used as the return of start/resume/throw, instead bein

Remove copying of fiber result to transfer value

Removes unnecessary copying of fiber return value to transfer value. This zval was not used as the return of start/resume/throw, instead being destroyed when the fiber was dead. Now the zval initialized to NULL when starting the fiber is maintained as the transfer value and is subsequently returned from start/resume/throw.

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Fiber cleanup

Add zend_fiber prefix to delegate_transfer_result().

Ensure status is set to INIT when initializing the fiber context in case memory is not zeroed.

Assert des

Fiber cleanup

Add zend_fiber prefix to delegate_transfer_result().

Ensure status is set to INIT when initializing the fiber context in case memory is not zeroed.

Assert destination fiber context is not dead.

Update stack alloc failure messages.

getThis() -> ZEND_THIS

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Rename Fiber::this() to Fiber::getCurrent() (#7155)

Flexible fiber bailout handling (#7163)

Do not expose fiber VM state management (#7170)

Drop fiber block hooks

Removes the ability for an extension to allow Fiber switching in blocked contexts.

See discussion on fdc22744a8951b605a546ad6f09a2b907043bc54.

Adds zend_fiber_startup at the right stage, moves setting of switch hooks
to correct stage

In a threaded environment, these ought to be set before any threads are
created, and they o

Adds zend_fiber_startup at the right stage, moves setting of switch hooks
to correct stage

In a threaded environment, these ought to be set before any threads are
created, and they ought to be set once.

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reset blocking state on init