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Update sync2 to just use atomic intrinsics rather than the parapoly wrappers

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This commit is contained in:
gingerBill
2021-04-12 15:22:40 +01:00
parent e3ee005404
commit 4fb4ada2c7
7 changed files with 163 additions and 230 deletions
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core/sync/sync2/primitives_pthreads.odin
+12 -13
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@@ -4,7 +4,6 @@ package sync2
when #config(ODIN_SYNC_USE_PTHREADS, false) {
import "intrinsics"
import "core:time"
import "core:sys/unix"
@@ -53,25 +52,25 @@ _RW_Mutex :: struct {
}
_rw_mutex_lock :: proc(rw: ^RW_Mutex) {
_ = intrinsics.atomic_add(&rw.impl.state, RW_Mutex_State_Writer);
_ = atomic_add(&rw.impl.state, RW_Mutex_State_Writer);
mutex_lock(&rw.impl.mutex);
state := intrinsics.atomic_or(&rw.impl.state, RW_Mutex_State_Writer);
state := atomic_or(&rw.impl.state, RW_Mutex_State_Writer);
if state & RW_Mutex_State_Reader_Mask != 0 {
sema_wait(&rw.impl.sema);
}
}
_rw_mutex_unlock :: proc(rw: ^RW_Mutex) {
_ = intrinsics.atomic_and(&rw.impl.state, ~RW_Mutex_State_Is_Writing);
_ = atomic_and(&rw.impl.state, ~RW_Mutex_State_Is_Writing);
mutex_unlock(&rw.impl.mutex);
}
_rw_mutex_try_lock :: proc(rw: ^RW_Mutex) -> bool {
if mutex_try_lock(&rw.impl.mutex) {
state := intrinsics.atomic_load(&rw.impl.state);
state := atomic_load(&rw.impl.state);
if state & RW_Mutex_State_Reader_Mask == 0 {
_ = intrinsics.atomic_or(&rw.impl.state, RW_Mutex_State_Is_Writing);
_ = atomic_or(&rw.impl.state, RW_Mutex_State_Is_Writing);
return true;
}
@@ -81,22 +80,22 @@ _rw_mutex_try_lock :: proc(rw: ^RW_Mutex) -> bool {
}
_rw_mutex_shared_lock :: proc(rw: ^RW_Mutex) {
state := intrinsics.atomic_load(&rw.impl.state);
state := atomic_load(&rw.impl.state);
for state & (RW_Mutex_State_Is_Writing|RW_Mutex_State_Writer_Mask) == 0 {
ok: bool;
state, ok = intrinsics.atomic_cxchgweak(&rw.impl.state, state, state + RW_Mutex_State_Reader);
state, ok = atomic_cxchgweak(&rw.impl.state, state, state + RW_Mutex_State_Reader);
if ok {
return;
}
}
mutex_lock(&rw.impl.mutex);
_ = intrinsics.atomic_add(&rw.impl.state, RW_Mutex_State_Reader);
_ = atomic_add(&rw.impl.state, RW_Mutex_State_Reader);
mutex_unlock(&rw.impl.mutex);
}
_rw_mutex_shared_unlock :: proc(rw: ^RW_Mutex) {
state := intrinsics.atomic_sub(&rw.impl.state, RW_Mutex_State_Reader);
state := atomic_sub(&rw.impl.state, RW_Mutex_State_Reader);
if (state & RW_Mutex_State_Reader_Mask == RW_Mutex_State_Reader) &&
(state & RW_Mutex_State_Is_Writing != 0) {
@@ -105,15 +104,15 @@ _rw_mutex_shared_unlock :: proc(rw: ^RW_Mutex) {
}
_rw_mutex_try_shared_lock :: proc(rw: ^RW_Mutex) -> bool {
state := intrinsics.atomic_load(&rw.impl.state);
state := atomic_load(&rw.impl.state);
if state & (RW_Mutex_State_Is_Writing|RW_Mutex_State_Writer_Mask) == 0 {
_, ok := intrinsics.atomic_cxchg(&rw.impl.state, state, state + RW_Mutex_State_Reader);
_, ok := atomic_cxchg(&rw.impl.state, state, state + RW_Mutex_State_Reader);
if ok {
return true;
}
}
if mutex_try_lock(&rw.impl.mutex) {
_ = intrinsics.atomic_add(&rw.impl.state, RW_Mutex_State_Reader);
_ = atomic_add(&rw.impl.state, RW_Mutex_State_Reader);
mutex_unlock(&rw.impl.mutex);
return true;
}