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Fix race condition

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This commit is contained in:
Baptiste Wicht 2016-08-09 22:29:26 +02:00
parent f9a4500378
commit 86d28d9683
1 changed files with 7 additions and 5 deletions
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12
kernel/src/scheduler.cpp
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@ -874,15 +874,17 @@ void scheduler::sleep_ms(pid_t pid, size_t time){
thor_assert(pid < scheduler::MAX_PROCESS, "pid out of bounds"); thor_assert(pid < scheduler::MAX_PROCESS, "pid out of bounds");
thor_assert(pcb[pid].state == process_state::RUNNING, "Only RUNNING processes can sleep"); thor_assert(pcb[pid].state == process_state::RUNNING, "Only RUNNING processes can sleep");
logging::logf(logging::log_level::DEBUG, "Put %u to sleep\n", pid);
pcb[pid].state = process_state::SLEEPING;
// Compute the amount of ticks to sleep // Compute the amount of ticks to sleep
auto sleep_ticks = time * (timer::frequency() / 1000); auto sleep_ticks = time * (timer::frequency() / 1000);
sleep_ticks = !sleep_ticks ? 1 : sleep_ticks; sleep_ticks = !sleep_ticks ? 1 : sleep_ticks;
pcb[pid].sleep_timeout = sleep_ticks;
logging::logf(logging::log_level::DEBUG, "Put %u to sleep for %u ticks\n", pid, sleep_ticks);
// Put the process to sleep
pcb[pid].sleep_timeout = sleep_ticks;
pcb[pid].state = process_state::SLEEPING;
// Run another process
reschedule(); reschedule();
} }