3b4269ecf5
Inside the page randomization of initial user stack pointer is not only a part of ASLR implementation but also a performance improvement that helps eliminating aligned 64 kB data access. Minimal user stack size is increased to 8 kB in order to ensure that regardless of initial stack pointer value there is still enough space on stack.
56 lines
1.4 KiB
C
56 lines
1.4 KiB
C
/*
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* Copyright 2008-2011, Ingo Weinhold, ingo_weinhold@gmx.de.
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* Distributed under the terms of the MIT License.
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*/
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#ifndef _SYSTEM_THREAD_DEFS_H
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#define _SYSTEM_THREAD_DEFS_H
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#include <pthread.h>
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#include <OS.h>
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/** Size of the stack given to teams in user space */
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#define USER_STACK_GUARD_SIZE (4 * B_PAGE_SIZE) // 16 kB
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#define USER_MAIN_THREAD_STACK_SIZE (16 * 1024 * 1024) // 16 MB
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#define USER_STACK_SIZE (256 * 1024) // 256 kB
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#define MIN_USER_STACK_SIZE (8 * 1024) // 8 kB
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#define MAX_USER_STACK_SIZE (16 * 1024 * 1024) // 16 MB
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// The type of object a thread blocks on (thread::wait::type, set by
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// thread_prepare_to_block()).
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enum {
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THREAD_BLOCK_TYPE_SEMAPHORE = 0,
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THREAD_BLOCK_TYPE_CONDITION_VARIABLE = 1,
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THREAD_BLOCK_TYPE_SNOOZE = 2,
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THREAD_BLOCK_TYPE_SIGNAL = 3,
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THREAD_BLOCK_TYPE_MUTEX = 4,
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THREAD_BLOCK_TYPE_RW_LOCK = 5,
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THREAD_BLOCK_TYPE_OTHER = 9999,
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THREAD_BLOCK_TYPE_USER_BASE = 10000
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};
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#define THREAD_CREATION_FLAG_DEFER_SIGNALS 0x01
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// create the thread with signals deferred, i.e. with
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// user_thread::defer_signals set to 1
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struct thread_creation_attributes {
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int32 (*entry)(void*, void*);
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const char* name;
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int32 priority;
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void* args1;
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void* args2;
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void* stack_address;
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size_t stack_size;
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size_t guard_size;
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pthread_t pthread;
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uint32 flags;
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};
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#endif /* _SYSTEM_THREAD_DEFS_H */
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