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authorIndrajith K L2022-12-03 17:00:20 +0530
committerIndrajith K L2022-12-03 17:00:20 +0530
commitf5c4671bfbad96bf346bd7e9a21fc4317b4959df (patch)
tree2764fc62da58f2ba8da7ed341643fc359873142f /v_windows/v/old/thirdparty/picoev/src/picoev_select.c
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Adds most of the toolsHEADmaster
Diffstat (limited to 'v_windows/v/old/thirdparty/picoev/src/picoev_select.c')
-rw-r--r--v_windows/v/old/thirdparty/picoev/src/picoev_select.c169
1 files changed, 169 insertions, 0 deletions
diff --git a/v_windows/v/old/thirdparty/picoev/src/picoev_select.c b/v_windows/v/old/thirdparty/picoev/src/picoev_select.c
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@@ -0,0 +1,169 @@
+/*
+ * Copyright (c) 2009, Cybozu Labs, Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * * Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ * * Neither the name of the <ORGANIZATION> nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef _WIN32
+# include <sys/select.h>
+#else
+# include <ws2tcpip.h>
+#endif
+
+#include "picoev.h"
+
+#ifdef _WIN32
+# define PICOEV_W32_INTERNAL
+# include "picoev_w32.h"
+# define PICOEV_FD_SET(x, y) FD_SET(picoev_w32_fd2sock(x), y)
+# define PICOEV_FD_ISSET(x, y) FD_ISSET(picoev_w32_fd2sock(x), y)
+
+typedef struct picoev_w32_globals_st {
+ int* fds;
+ void* _fds_free_addr;
+} picoev_w32_globals;
+
+picoev_w32_globals picoev_w32;
+
+int picoev_w32_sock2fd(int sock) {
+ int i;
+ for (i = 0; i < picoev.max_fd && picoev_w32.fds[i]; ++i)
+ if (picoev_w32.fds[i] == sock) return i;
+ assert(PICOEV_IS_INITED_AND_FD_IN_RANGE(i));
+ picoev_w32.fds[i] = sock;
+ return i;
+}
+
+int picoev_w32_fd2sock(int fd) {
+ assert(PICOEV_IS_INITED_AND_FD_IN_RANGE(fd));
+ return picoev_w32.fds[fd];
+}
+
+extern int picoev_w32_deinit(void);
+
+int picoev_w32_init(int max_fd) {
+ int r = picoev_init(max_fd);
+ if ((picoev_w32.fds = (int*)picoev_memalign(sizeof(int) * max_fd,
+ &picoev_w32._fds_free_addr, 1))
+ == NULL) {
+ picoev_deinit();
+ return -1;
+ }
+}
+
+int picoev_w32_deinit(void) {
+ free(picoev_w32._fds_free_addr);
+ picoev_w32.fds = NULL;
+ picoev_w32._fds_free_addr = NULL;
+ return picoev_deinit();
+}
+
+#else
+# define PICOEV_FD_SET(x, y) FD_SET(x, y)
+# define PICOEV_FD_ISSET(x, y) FD_ISSET(x, y)
+#endif
+
+picoev_globals picoev;
+
+picoev_loop* picoev_create_loop(int max_timeout)
+{
+ picoev_loop* loop;
+
+ assert(PICOEV_IS_INITED);
+ if ((loop = (picoev_loop*)malloc(sizeof(picoev_loop))) == NULL) {
+ return NULL;
+ }
+ if (picoev_init_loop_internal(loop, max_timeout) != 0) {
+ free(loop);
+ return NULL;
+ }
+
+ loop->now = time(NULL);
+ return loop;
+}
+
+int picoev_destroy_loop(picoev_loop* loop)
+{
+ picoev_deinit_loop_internal(loop);
+ free(loop);
+ return 0;
+}
+
+int picoev_update_events_internal(picoev_loop* loop, int fd, int events)
+{
+ picoev.fds[fd].events = events & PICOEV_READWRITE;
+ return 0;
+}
+
+int picoev_poll_once_internal(picoev_loop* loop, int max_wait)
+{
+ fd_set readfds, writefds, errorfds;
+ struct timeval tv;
+ int i, r, maxfd = 0;
+
+ /* setup */
+ FD_ZERO(&readfds);
+ FD_ZERO(&writefds);
+ FD_ZERO(&errorfds);
+ for (i = 0; i < picoev.max_fd; ++i) {
+ picoev_fd* fd = picoev.fds + i;
+ if (fd->loop_id == loop->loop_id) {
+ if ((fd->events & PICOEV_READ) != 0) {
+ PICOEV_FD_SET(i, &readfds);
+ if (maxfd < i) {
+ maxfd = i;
+ }
+ }
+ if ((fd->events & PICOEV_WRITE) != 0) {
+ PICOEV_FD_SET(i, &writefds);
+ if (maxfd < i) {
+ maxfd = i;
+ }
+ }
+ }
+ }
+
+ /* select and handle if any */
+ tv.tv_sec = max_wait;
+ tv.tv_usec = 0;
+ r = select(maxfd + 1, &readfds, &writefds, &errorfds, &tv);
+ if (r == -1) {
+ return -1;
+ } else if (r > 0) {
+ for (i = 0; i < picoev.max_fd; ++i) {
+ picoev_fd* target = picoev.fds + i;
+ if (target->loop_id == loop->loop_id) {
+ int revents = (PICOEV_FD_ISSET(i, &readfds) ? PICOEV_READ : 0)
+ | (PICOEV_FD_ISSET(i, &writefds) ? PICOEV_WRITE : 0);
+ if (revents != 0) {
+ (*target->callback)(loop, i, revents, target->cb_arg);
+ }
+ }
+ }
+ }
+
+ return 0;
+}