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Correctly compute the sleep timeout in ticks

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This commit is contained in:
Baptiste Wicht 2016-08-06 15:53:43 +02:00
parent 1dda064247
commit a7ffd12f65
1 changed files with 6 additions and 1 deletions
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7
kernel/src/scheduler.cpp
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@ -27,6 +27,7 @@
#include "kernel_utils.hpp"
#include "logging.hpp"
#include "int_lock.hpp"
#include "timer.hpp"
//Provided by task_switch.s
extern "C" {
@ -752,6 +753,7 @@ void scheduler::tick(){
++current_ticks;
// Update sleep timeouts
for(auto& process : pcb){
if(process.state == process_state::SLEEPING){
--process.sleep_timeout;
@ -856,7 +858,10 @@ void scheduler::sleep_ms(pid_t pid, size_t time){
logging::logf(logging::log_level::DEBUG, "Put %u to sleep\n", pid);
pcb[pid].state = process_state::SLEEPING;
pcb[pid].sleep_timeout = time;
// Compute the amount of ticks to sleep
auto sleep_ticks = (time * 1000) / timer::frequency() + (time * 1000) % timer::frequency() == 0 ? 0 : 1;
pcb[pid].sleep_timeout = sleep_ticks;
reschedule();
}