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Kernel: Keep track of thread user and system time separately

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Bananymous
2026-08-19 21:32:36 +03:00
parent f0a114f4e5
commit 8cd9e6dfa8
4 changed files with 53 additions and 17 deletions
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kernel/kernel/Thread.cpp
+26 -5
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@@ -285,12 +285,22 @@ namespace Kernel
}
}
uint64_t Thread::cpu_time_ns() const
uint64_t Thread::cpu_time_total_ns() const
{
SpinLockGuard _(m_cpu_time_lock);
if (m_cpu_time_start_ns == UINT64_MAX)
return m_cpu_time_ns;
return m_cpu_time_ns + (SystemTimer::get().ns_since_boot() - m_cpu_time_start_ns);
uint64_t offset = 0;
if (m_cpu_time_start_ns != UINT64_MAX)
offset += SystemTimer::get().ns_since_boot() - m_cpu_time_start_ns;
return m_cpu_time_user_ns + m_cpu_time_system_ns + offset;
}
void Thread::cpu_time_ns(uint64_t& user_ns, uint64_t& system_ns) const
{
SpinLockGuard _(m_cpu_time_lock);
user_ns = m_cpu_time_user_ns;
system_ns = m_cpu_time_system_ns;
if (m_cpu_time_start_ns != UINT64_MAX)
system_ns += SystemTimer::get().ns_since_boot() - m_cpu_time_start_ns;
}
void Thread::set_cpu_time_start()
@@ -304,10 +314,21 @@ namespace Kernel
{
SpinLockGuard _(m_cpu_time_lock);
ASSERT(m_cpu_time_start_ns != UINT64_MAX);
m_cpu_time_ns += SystemTimer::get().ns_since_boot() - m_cpu_time_start_ns;
uint64_t& value = m_is_in_syscall ? m_cpu_time_system_ns : m_cpu_time_user_ns;
value += SystemTimer::get().ns_since_boot() - m_cpu_time_start_ns;
m_cpu_time_start_ns = UINT64_MAX;
}
void Thread::set_is_in_syscall(bool is_in_syscall)
{
SpinLockGuard _(m_cpu_time_lock);
const uint64_t current_ns = SystemTimer::get().ns_since_boot();
uint64_t& value = m_is_in_syscall ? m_cpu_time_system_ns : m_cpu_time_user_ns;
value += current_ns - m_cpu_time_start_ns;
m_is_in_syscall = is_in_syscall;
m_cpu_time_start_ns = current_ns;
}
void Thread::update_processor_index_address()
{
if (!is_userspace() || !has_process())