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- /*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- *
- * SPDX-License-Identifier: BSD-2-Clause
- */
- #pragma once
- #include <AK/Optional.h>
- #include <AK/OwnPtr.h>
- #include <Kernel/Forward.h>
- #include <LibC/sys/arch/i386/regs.h>
- namespace Kernel {
- class ThreadTracer {
- public:
- static OwnPtr<ThreadTracer> create(ProcessID tracer) { return try_make<ThreadTracer>(tracer); }
- ProcessID tracer_pid() const { return m_tracer_pid; }
- bool has_pending_signal(u32 signal) const { return m_pending_signals & (1 << (signal - 1)); }
- void set_signal(u32 signal) { m_pending_signals |= (1 << (signal - 1)); }
- void unset_signal(u32 signal) { m_pending_signals &= ~(1 << (signal - 1)); }
- bool is_tracing_syscalls() const { return m_trace_syscalls; }
- void set_trace_syscalls(bool val) { m_trace_syscalls = val; }
- void set_regs(const RegisterState& regs);
- void set_regs(const PtraceRegisters& regs) { m_regs = regs; }
- bool has_regs() const { return m_regs.has_value(); }
- const PtraceRegisters& regs() const
- {
- VERIFY(m_regs.has_value());
- return m_regs.value();
- }
- explicit ThreadTracer(ProcessID);
- private:
- ProcessID m_tracer_pid { -1 };
- // This is a bitmap for signals that are sent from the tracer to the tracee
- // TODO: Since we do not currently support sending signals
- // to the tracee via PT_CONTINUE, this bitmap is always zeroed
- u32 m_pending_signals { 0 };
- bool m_trace_syscalls { false };
- Optional<PtraceRegisters> m_regs;
- };
- }
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