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Make Process::for_each...() functions inline and allocation-free.

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AK::Function is very handy, but costs us an 8-byte allocation.
Let's not have kmalloc() calls in the scheduler hot path.
This commit is contained in:
Andreas Kling 2018-11-08 16:09:05 +01:00
parent abdf24cb73
commit 992769c9d4
3 changed files with 59 additions and 50 deletions
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46
Kernel/Process.cpp
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@ -901,52 +901,6 @@ void Process::crash()
ASSERT_NOT_REACHED();
}
void Process::for_each(Function<bool(Process&)> callback)
{
ASSERT_INTERRUPTS_DISABLED();
for (auto* process = g_processes->head(); process;) {
auto* next_process = process->next();
if (!callback(*process))
break;
process = next_process;
}
}
void Process::for_each_in_pgrp(pid_t pgid, Function<bool(Process&)> callback)
{
ASSERT_INTERRUPTS_DISABLED();
for (auto* process = g_processes->head(); process;) {
auto* next_process = process->next();
if (process->pgid() == pgid) {
if (!callback(*process))
break;
}
process = next_process;
}
}
void Process::for_each_in_state(State state, Function<bool(Process&)> callback)
{
ASSERT_INTERRUPTS_DISABLED();
for (auto* process = g_processes->head(); process;) {
auto* next_process = process->next();
if (process->state() == state)
callback(*process);
process = next_process;
}
}
void Process::for_each_not_in_state(State state, Function<bool(Process&)> callback)
{
ASSERT_INTERRUPTS_DISABLED();
for (auto* process = g_processes->head(); process;) {
auto* next_process = process->next();
if (process->state() != state)
callback(*process);
process = next_process;
}
}
Process* Process::from_pid(pid_t pid)
{
ASSERT_INTERRUPTS_DISABLED();