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Kernel: Implement CLOCK_{PROCESS,THREAD}_CPUTIME_ID

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Bananymous
2025-06-26 13:38:50 +03:00
parent 4fa40de557
commit 83c0ef3514
5 changed files with 63 additions and 4 deletions
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23
kernel/kernel/Thread.cpp
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@@ -166,6 +166,29 @@ namespace Kernel
}
}
uint64_t Thread::cpu_time_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);
}
void Thread::set_cpu_time_start()
{
SpinLockGuard _(m_cpu_time_lock);
ASSERT(m_cpu_time_start_ns == UINT64_MAX);
m_cpu_time_start_ns = SystemTimer::get().ns_since_boot();
}
void Thread::set_cpu_time_stop()
{
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;
m_cpu_time_start_ns = UINT64_MAX;
}
BAN::ErrorOr<Thread*> Thread::pthread_create(entry_t entry, void* arg)
{
auto* thread = TRY(create_userspace(m_process, m_process->page_table()));