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956314f0a1
Modify the API so it's possible to propagate error on OOM failure. NonnullOwnPtr<T> is not appropriate for the ThreadTracer::create() API, so switch to OwnPtr<T>, use adopt_own_if_nonnull() to handle creation.
52 lines
1.5 KiB
C++
52 lines
1.5 KiB
C++
/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <AK/Optional.h>
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#include <AK/OwnPtr.h>
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#include <Kernel/UnixTypes.h>
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#include <LibC/sys/arch/i386/regs.h>
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namespace Kernel {
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class ThreadTracer {
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public:
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static OwnPtr<ThreadTracer> create(ProcessID tracer) { return adopt_own_if_nonnull(new ThreadTracer(tracer)); }
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ProcessID tracer_pid() const { return m_tracer_pid; }
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bool has_pending_signal(u32 signal) const { return m_pending_signals & (1 << (signal - 1)); }
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void set_signal(u32 signal) { m_pending_signals |= (1 << (signal - 1)); }
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void unset_signal(u32 signal) { m_pending_signals &= ~(1 << (signal - 1)); }
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bool is_tracing_syscalls() const { return m_trace_syscalls; }
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void set_trace_syscalls(bool val) { m_trace_syscalls = val; }
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void set_regs(const RegisterState& regs);
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void set_regs(const PtraceRegisters& regs) { m_regs = regs; }
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bool has_regs() const { return m_regs.has_value(); }
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const PtraceRegisters& regs() const
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{
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VERIFY(m_regs.has_value());
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return m_regs.value();
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}
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explicit ThreadTracer(ProcessID);
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private:
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ProcessID m_tracer_pid { -1 };
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// This is a bitmap for signals that are sent from the tracer to the tracee
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// TODO: Since we do not currently support sending signals
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// to the tracee via PT_CONTINUE, this bitmap is always zeroed
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u32 m_pending_signals { 0 };
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bool m_trace_syscalls { false };
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Optional<PtraceRegisters> m_regs;
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};
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}
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