HyThread_public Struct Reference

#include <hythread.h>

List of all members.

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Detailed Description

Native thread control structure's public fields.

Public Attributes
void *	reserved
int32	request
	Number of requests made for this thread, it includes both suspend requests and safe point callback requests.
int16	disable_count
	Field indicating that thread can safely be suspended.
hythread_group_t	group
	Group for this thread.
void *	thread_local_storage [10]
	Array representing thread local storage.

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Member Data Documentation

void* HyThread_public.reserved

int32 HyThread_public.request

Number of requests made for this thread, it includes both suspend requests and safe point callback requests.

The field is modified by atomic operations.

Increment in functions: 1. send_suspend_request()

• sets suspend request for a given thread 2. hythread_set_safepoint_callback()
• sets safe point callback request for a given thread

Decrement in functions: 1. hythread_resume()

• removes suspend request for a given thread 2. hythread_exception_safe_point()
• removes safe point callback request for current thread

int16 HyThread_public.disable_count

Field indicating that thread can safely be suspended.

Safe suspension is enabled on value 0.

The disable_count is increased/decreaded in hythread_suspend_disable()/hythread_suspend_enable() function for current thread only.

Also disable_count could be reset to value 0 and restored in hythread_reset_suspend_disable()/hythread_set_suspend_disable() function for current thread only.

Function hythread_exception_safe_point() sets disable_count to value 1 before safe point callback function calling and restores it after the call.

Function thread_safe_point_impl() sets disable_count to value 0 before entering to the safe point and restores it after exitting.

hythread_group_t HyThread_public.group

Group for this thread.

Different groups are needed in order to be able to quickly iterate over the specific group. Examples are: Java threads, GC private threads. Equal to the address of the head of the list of threads for this group.

void* HyThread_public.thread_local_storage[10]

Array representing thread local storage.

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The documentation for this struct was generated from the following file:

• hythread.h

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