101 lines
2.9 KiB
C++
101 lines
2.9 KiB
C++
/*******************************************************************************
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Copyright(C) Jonas 'Sortie' Termansen 2011, 2012, 2013, 2014.
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This file is part of Sortix.
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Sortix is free software: you can redistribute it and/or modify it under the
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terms of the GNU General Public License as published by the Free Software
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Foundation, either version 3 of the License, or (at your option) any later
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version.
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Sortix is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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details.
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You should have received a copy of the GNU General Public License along with
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Sortix. If not, see <http://www.gnu.org/licenses/>.
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sortix/kernel/thread.h
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Describes a thread belonging to a process.
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*******************************************************************************/
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#ifndef INCLUDE_SORTIX_KERNEL_THREAD_H
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#define INCLUDE_SORTIX_KERNEL_THREAD_H
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#include <sortix/sigaction.h>
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#include <sortix/signal.h>
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#include <sortix/sigset.h>
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#include <sortix/stack.h>
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#include <sortix/kernel/kthread.h>
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#include <sortix/kernel/registers.h>
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#include <sortix/kernel/scheduler.h>
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#include <sortix/kernel/signal.h>
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namespace Sortix {
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class Process;
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class Thread;
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// These functions create a new kernel process but doesn't start it.
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Thread* CreateKernelThread(Process* process, struct thread_registers* regs);
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Thread* CreateKernelThread(Process* process, void (*entry)(void*), void* user,
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size_t stacksize = 0);
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Thread* CreateKernelThread(void (*entry)(void*), void* user, size_t stacksize = 0);
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// This function can be used to start a thread from the above functions.
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void StartKernelThread(Thread* thread);
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// Alternatively, these functions both create and start the thread.
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Thread* RunKernelThread(Process* process, struct thread_registers* regs);
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Thread* RunKernelThread(Process* process, void (*entry)(void*), void* user,
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size_t stacksize = 0);
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Thread* RunKernelThread(void (*entry)(void*), void* user, size_t stacksize = 0);
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class Thread
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{
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public:
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static void Init();
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public:
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Thread();
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~Thread();
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public:
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struct thread_registers registers;
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uint8_t* self_allocation;
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size_t id;
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Process* process;
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Thread* prevsibling;
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Thread* nextsibling;
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Thread* scheduler_list_prev;
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Thread* scheduler_list_next;
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volatile ThreadState state;
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sigset_t signal_pending;
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sigset_t signal_mask;
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stack_t signal_stack;
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addr_t kernelstackpos;
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size_t kernelstacksize;
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bool kernelstackmalloced;
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bool pledged_destruction;
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public:
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void HandleSignal(struct interrupt_context* intctx);
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void HandleSigreturn(struct interrupt_context* intctx);
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bool DeliverSignal(int signum);
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bool DeliverSignalUnlocked(int signum);
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};
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Thread* AllocateThread();
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void FreeThread(Thread* thread);
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Thread* CurrentThread();
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} // namespace Sortix
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#endif
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