Introduce thread local storage

[stockfish] / src / platform.h

diff --git a/src/platform.h b/src/platform.h
index f9739c69b5c1ce537636d66a0e88459d1d0ea76b..a925d5f70e2ba3c94c62010ccc5b44b7ab3464eb 100644 (file)
--- a/src/platform.h
+++ b/src/platform.h
@@ -53,8 +53,9 @@ inline uint64_t time_to_msec(const sys_time_t& t) { return t.tv_sec * 1000LL + t
 #  include <pthread.h>
 typedef pthread_mutex_t Lock;
 typedef pthread_cond_t WaitCondition;
-typedef pthread_t ThreadHandle;
-typedef void*(*start_fn)(void*);
+typedef pthread_t NativeHandle;
+typedef pthread_key_t ThreadLocalStorageKey;
+typedef void*(*pt_start_fn)(void*);
 
 #  define lock_init(x) pthread_mutex_init(&(x), NULL)
 #  define lock_grab(x) pthread_mutex_lock(&(x))
@@ -65,8 +66,12 @@ typedef void*(*start_fn)(void*);
 #  define cond_signal(x) pthread_cond_signal(&(x))
 #  define cond_wait(x,y) pthread_cond_wait(&(x),&(y))
 #  define cond_timedwait(x,y,z) pthread_cond_timedwait(&(x),&(y),z)
-#  define thread_create(x,f,t) !pthread_create(&(x),NULL,(start_fn)f,t)
+#  define thread_create(x,f,t) !pthread_create(&(x),NULL,(pt_start_fn)f,t)
 #  define thread_join(x) pthread_join(x, NULL)
+#  define tls_init(k) pthread_key_create(&k,NULL)
+#  define tls_get(k) pthread_getspecific(k)
+#  define tls_set(k,x) pthread_setspecific(k,x)
+#  define tls_destroy(k) pthread_key_delete(k)
 
 #else // Windows and MinGW
 
@@ -90,7 +95,8 @@ inline uint64_t time_to_msec(const sys_time_t& t) { return t.time * 1000LL + t.m
 // but apart from this they have the same speed performance of SRW locks.
 typedef CRITICAL_SECTION Lock;
 typedef HANDLE WaitCondition;
-typedef HANDLE ThreadHandle;
+typedef HANDLE NativeHandle;
+typedef DWORD ThreadLocalStorageKey;
 
 #  define lock_init(x) InitializeCriticalSection(&(x))
 #  define lock_grab(x) EnterCriticalSection(&(x))
@@ -103,6 +109,10 @@ typedef HANDLE ThreadHandle;
 #  define cond_timedwait(x,y,z) { lock_release(y); WaitForSingleObject(x,z); lock_grab(y); }
 #  define thread_create(x,f,t) (x = CreateThread(NULL,0,(LPTHREAD_START_ROUTINE)f,t,0,NULL), x != NULL)
 #  define thread_join(x) { WaitForSingleObject(x, INFINITE); CloseHandle(x); }
+#  define tls_init(k) do { k = TlsAlloc(); } while(0)
+#  define tls_get(k) TlsGetValue(k)
+#  define tls_set(k,x) TlsSetValue(k,x)
+#  define tls_destroy(k) TlsFree(k)
 
 #endif