diff options
| -rw-r--r-- | uisimulator/sdl/kernel.c | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/uisimulator/sdl/kernel.c b/uisimulator/sdl/kernel.c index 4e0a508..96654d5 100644 --- a/uisimulator/sdl/kernel.c +++ b/uisimulator/sdl/kernel.c @@ -28,10 +28,10 @@ #include "thread.h" #include "debug.h" -/* Prevent "irq handler" from thread concurrent access as well as current - * access on multiple handlers */ +/* Condition to signal that "interrupts" may proceed */ static SDL_cond *sim_thread_cond; -/* Protect sim irq object when it is being changed */ +/* Mutex to serialize changing levels and exclude other threads while + * inside a handler */ static SDL_mutex *sim_irq_mtx; static int interrupt_level = HIGHEST_IRQ_LEVEL; static int status_reg = 0; @@ -88,7 +88,6 @@ bool sim_kernel_init(void) return false; } - /* Create with a count of 0 to have interrupts disabled by default */ sim_thread_cond = SDL_CreateCond(); if (sim_thread_cond == NULL) { |