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address space that is fully locked and marked B_KERNEL_AREA. It can thus be accessed by the kernel without additional checks. * For each userland thread we do create a user_thread structure in that area. The structure is accessible from userland via TLS, using the private get_user_thread() function. * Introduced private userland functions [un]defer_signals(). They can be used to cheaply disable/re-enable signal delivery. They use the user_thread::defer_signals/pending_signals fields which are checked/updated by the kernel. git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@25451 a95241bf-73f2-0310-859d-f6bbb57e9c96
31 lines
674 B
C
31 lines
674 B
C
/*
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** Copyright 2003, Axel Dörfler, axeld@pinc-software.de. All rights reserved.
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** Distributed under the terms of the OpenBeOS License.
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*/
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#ifndef _KERNEL_TLS_H
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#define _KERNEL_TLS_H
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#include <support/TLS.h>
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#define TLS_SIZE (TLS_MAX_KEYS * sizeof(void *))
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enum {
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TLS_BASE_ADDRESS_SLOT = 0,
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// contains the address of the local storage space
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TLS_THREAD_ID_SLOT,
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TLS_ERRNO_SLOT,
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TLS_ON_EXIT_THREAD_SLOT,
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TLS_USER_THREAD_SLOT,
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// Note: these entries can safely be changed between
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// releases; 3rd party code always calls tls_allocate()
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// to get a free slot
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TLS_FIRST_FREE_SLOT
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// the first free slot for user allocations
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};
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#endif /* _KERNEL_TLS_H */
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