Kernel address space isolation and make the kernel heap global to all processes.

[lunaix-os.git] / lunaix-os / kernel / time / timer.c

diff --git a/lunaix-os/kernel/time/timer.c b/lunaix-os/kernel/time/timer.c
index 03ef2b4c2f4167dbb88df56124e2a0d16bef2d48..42a9ac214262d655a3e4b628091fce92d397373b 100644 (file)
--- a/lunaix-os/kernel/time/timer.c
+++ b/lunaix-os/kernel/time/timer.c
@@ -16,6 +16,7 @@
 #include <lunaix/spike.h>
 #include <lunaix/syslog.h>
 #include <lunaix/timer.h>
+#include <lunaix/sched.h>
 
 #define LVT_ENTRY_TIMER(vector, mode) (LVT_DELIVERY_FIXED | mode | vector)
 
@@ -38,6 +39,9 @@ static volatile struct lx_timer_context* timer_ctx = NULL;
 static volatile uint32_t rtc_counter = 0;
 static volatile uint8_t apic_timer_done = 0;
 
+static volatile uint32_t sched_ticks = 0;
+static volatile uint32_t sched_ticks_counter = 0;
+
 #define APIC_CALIBRATION_CONST 0x100000
 
 void
@@ -51,6 +55,7 @@ timer_init_context()
     timer_ctx->active_timers =
       (struct lx_timer*)lxmalloc(sizeof(struct lx_timer));
     llist_init_head(timer_ctx->active_timers);
+
 }
 
 void
@@ -131,6 +136,9 @@ timer_init(uint32_t frequency)
     intr_subscribe(APIC_TIMER_IV, timer_update);
 
     apic_write_reg(APIC_TIMER_ICR, timer_ctx->tphz);
+
+    sched_ticks = timer_ctx->running_frequency / 1000 * SCHED_TIME_SLICE;
+    sched_ticks_counter = 0;
 }
 
 int
@@ -184,6 +192,13 @@ timer_update(const isr_param* param)
             lxfree(pos);
         }
     }
+    
+    sched_ticks_counter++;
+
+    if (sched_ticks_counter >= sched_ticks) {
+        sched_ticks_counter = 0;
+        schedule();
+    }
 }
 
 static void