optimize for windows platform by conditional building.

lib_acl/include/thread/acl_pthread.h

@@ -71,12 +71,22 @@ typedef pthread_once_t acl_pthread_once_t;
 #define	ACL_TLS_OUT_OF_INDEXES          0xffffffff
 #define	ACL_PTHREAD_KEYS_MAX            1024
 
-#define HAS_ONCE
-
 /*
  * see https://docs.microsoft.com/en-us/windows/win32/api/synchapi/nf-synchapi-initonceexecuteonce
  * for the supported windows OS's version, if not please comment out it.
  */
+#ifdef _WIN32_WINNT
+# if defined(_WIN32_WINNT_WS08)
+#  if _WIN32_WINNT >= _WIN32_WINNT_WS08
+#   define HAS_ONCE
+#  endif
+# elif defined(_WIN32_WINNT_VISTA)
+#  if _WIN32_WINNT >= _WIN32_WINNT_VISTA
+#   define HAS_ONCE
+#  endif
+# endif
+#endif
+
 #ifdef HAS_ONCE
 #define ACL_PTHREAD_ONCE_INIT           INIT_ONCE_STATIC_INIT
 #else

lib_fiber/c/src/common/open_limit.c

@@ -5,7 +5,7 @@
 
 #ifdef SYS_WIN
 
-static int __default_limit = 10240;
+static int __default_limit = FD_SETSIZE;
 
 int open_limit(int limit)
 {

lib_fiber/c/src/define.h

@@ -22,7 +22,7 @@
 
 # if(_MSC_VER >= 1300)
 #  undef FD_SETSIZE
-#  define FD_SETSIZE 10240
+#  define FD_SETSIZE 102400
 #  include <winsock2.h>
 #  include <mswsock.h>
 # else

lib_fiber/c/src/fiber/fiber_win.c

@@ -4,6 +4,21 @@
 
 #ifdef SYS_WIN
 
+// see <sdkddkver.h>
+// see https://docs.microsoft.com/en-us/cpp/porting/modifying-winver-and-win32-winnt?redirectedfrom=MSDN&view=msvc-170
+
+#ifdef _WIN32_WINNT
+# if defined(_WIN32_WINNT_WS08)
+#  if _WIN32_WINNT >= _WIN32_WINNT_WS08
+#   define HAS_FIBER_EX
+#  endif
+# elif defined(_WIN32_WINNT_VISTA)
+#  if _WIN32_WINNT >= _WIN32_WINNT_VISTA
+#   define HAS_FIBER_EX
+#  endif
+# endif
+#endif
+
 typedef struct FIBER_WIN {
 	ACL_FIBER fiber;
 	LPVOID context;
@@ -33,8 +48,14 @@ static void fiber_win_init(FIBER_WIN *fb, size_t size)
 	if (fb->context) {
 		DeleteFiber(fb->context);
 	}
+
+#ifdef HAS_FIBER_EX
 	fb->context = CreateFiberEx(0, size, FIBER_FLAG_FLOAT_SWITCH,
 		fiber_win_start, fb);
+#else
+	fb->context = CreateFiber(size, fiber_win_start, fb);
+#endif
+
 	if (fb->context == NULL) {
 		int e = acl_fiber_last_error();
 		msg_fatal("%s: CreateFiberEx error=%s, %d", last_serror(), e);
@@ -58,7 +79,12 @@ ACL_FIBER *fiber_win_origin(void)
 {
 	FIBER_WIN *fb = (FIBER_WIN *) mem_calloc(1, sizeof(*fb));
 
+#ifdef HAS_FIBER_EX
 	fb->context = ConvertThreadToFiberEx(NULL, FIBER_FLAG_FLOAT_SWITCH);
+#else
+	fb->context = ConvertThreadToFiber(NULL);
+#endif
+
 	fb->fiber.free_fn = fiber_win_free;
 	fb->fiber.swap_fn = (void(*)(ACL_FIBER*, ACL_FIBER*)) fiber_win_swap;
 

lib_fiber/c/src/fiber_io.c

@@ -118,6 +118,8 @@ void fiber_io_check(void)
 		var_maxfd = MAXFD;
 	}
 
+	msg_info("%s(%d): maxfd=%d", __FUNCTION__, __LINE__, var_maxfd);
+
 	__thread_fiber = (FIBER_TLS *) mem_malloc(sizeof(FIBER_TLS));
 	__thread_fiber->event = event_create(var_maxfd);
 	__thread_fiber->ev_fiber  = acl_fiber_create(fiber_io_loop,