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mark published tick entity store read only

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This commit is contained in:
jacob 2024-08-12 15:18:51 -05:00
parent 192d5db2a5
commit 787bb9e0d1
3 changed files with 14 additions and 4 deletions
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4
src/arena.c
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@ -119,16 +119,16 @@ void arena_decommit_unused_blocks(struct arena *arena)
void arena_set_readonly(struct arena *arena)
{
sys_memory_set_committed_readonly(arena->base, arena->committed);
#if RTC
arena->readonly = true;
#endif
sys_memory_set_committed_readonly(arena->base, arena->committed);
}
void arena_set_readwrite(struct arena *arena)
{
sys_memory_set_committed_readwrite(arena->base, arena->committed);
#if RTC
arena->readonly = false;
#endif
sys_memory_set_committed_readwrite(arena->base, arena->committed);
}

11
src/game.c
View File

@ -15,6 +15,8 @@ GLOBAL struct {
struct atomic_i32 game_thread_shutdown;
struct sys_thread game_thread;
/* Double buffered game state */
struct world prev_world; /* Last tick */
struct world world;
/* Game thread input */
@ -51,6 +53,7 @@ struct game_startup_receipt game_startup(struct mixer_startup_receipt *mixer_sr,
/* Initialize tick transmission */
world_alloc(&G.published_tick);
arena_set_readonly(&G.published_tick.entity_store->arena);
G.published_tick_mutex = sys_mutex_alloc();
G.world.timescale = GAME_TIMESCALE;
@ -132,7 +135,7 @@ INTERNAL void spawn_test_entities(void)
/* Child 1 */
{
struct v2 pos = V2(0.25, -0.25);
struct v2 pos = V2(1, 0);
struct v2 size = V2(1, 1);
f32 r = PI / 4;
@ -172,7 +175,11 @@ INTERNAL void publish_game_tick(void)
{
__prof;
struct sys_lock lock = sys_mutex_lock_e(&G.published_tick_mutex);
world_copy_replace(&G.published_tick, &G.world);
arena_set_readwrite(&G.published_tick.entity_store->arena);
{
world_copy_replace(&G.published_tick, &G.world);
}
arena_set_readonly(&G.published_tick.entity_store->arena);
atomic_u64_eval_exchange(&G.published_tick_id, G.published_tick.tick_id);
sys_mutex_unlock(&lock);
}

3
src/sys.h
View File

@ -167,7 +167,10 @@ void *sys_memory_commit(void *address, u64 size);
* address space) */
void sys_memory_decommit(void *address, u64 size);
/* Mark committed pages as readonly */
void sys_memory_set_committed_readonly(void *address, u64 size);
/* Mark committed pages as readable & writeable (default for committed memory) */
void sys_memory_set_committed_readwrite(void *address, u64 size);
/* ========================== *