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https://github.com/glfw/glfw.git
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Wayland: Adopt the poll wrapper from X11
This is adapted to 3.3-stable from
bb9d699ae6
.
This commit is contained in:
parent
9dd3f25d6d
commit
b0af476799
@ -39,7 +39,8 @@
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#include <sys/mman.h>
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#include <sys/timerfd.h>
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#include <poll.h>
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#include <signal.h>
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#include <time.h>
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static void shellSurfaceHandlePing(void* data,
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struct wl_shell_surface* shellSurface,
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@ -248,6 +249,53 @@ static struct wl_buffer* createShmBuffer(const GLFWimage* image)
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return buffer;
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}
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// Wait for data to arrive on any of the specified file descriptors
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//
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static GLFWbool waitForData(struct pollfd* fds, nfds_t count, double* timeout)
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{
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for (;;)
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{
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if (timeout)
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{
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const uint64_t base = _glfwPlatformGetTimerValue();
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#if defined(__linux__) || defined(__FreeBSD__) || defined(__OpenBSD__) || defined(__CYGWIN__)
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const time_t seconds = (time_t) *timeout;
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const long nanoseconds = (long) ((*timeout - seconds) * 1e9);
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const struct timespec ts = { seconds, nanoseconds };
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const int result = ppoll(fds, count, &ts, NULL);
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#elif defined(__NetBSD__)
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const time_t seconds = (time_t) *timeout;
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const long nanoseconds = (long) ((*timeout - seconds) * 1e9);
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const struct timespec ts = { seconds, nanoseconds };
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const int result = pollts(fds, count, &ts, NULL);
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#else
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const int milliseconds = (int) (*timeout * 1e3);
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const int result = poll(fds, count, milliseconds);
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#endif
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const int error = errno; // clock_gettime may overwrite our error
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*timeout -= (_glfwPlatformGetTimerValue() - base) /
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(double) _glfwPlatformGetTimerFrequency();
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if (result > 0)
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return GLFW_TRUE;
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else if (result == -1 && error != EINTR && error != EAGAIN)
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return GLFW_FALSE;
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else if (*timeout <= 0.0)
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return GLFW_FALSE;
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}
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else
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{
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const int result = poll(fds, count, -1);
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if (result > 0)
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return GLFW_TRUE;
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else if (result == -1 && errno != EINTR && errno != EAGAIN)
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return GLFW_FALSE;
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}
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}
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}
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static void createDecoration(_GLFWdecorationWayland* decoration,
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struct wl_surface* parent,
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struct wl_buffer* buffer, GLFWbool opaque,
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@ -850,7 +898,7 @@ static GLFWbool flushDisplay(void)
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return GLFW_TRUE;
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}
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static void handleEvents(int timeout)
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static void handleEvents(double* timeout)
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{
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struct pollfd fds[] =
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{
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@ -878,7 +926,7 @@ static void handleEvents(int timeout)
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return;
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}
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if (poll(fds, 3, timeout) > 0)
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if (waitForData(fds, 3, timeout) > 0)
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{
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if (fds[0].revents & POLLIN)
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{
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@ -1328,17 +1376,18 @@ GLFWbool _glfwPlatformRawMouseMotionSupported(void)
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void _glfwPlatformPollEvents(void)
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{
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handleEvents(0);
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double timeout = 0.0;
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handleEvents(&timeout);
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}
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void _glfwPlatformWaitEvents(void)
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{
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handleEvents(-1);
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handleEvents(NULL);
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}
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void _glfwPlatformWaitEventsTimeout(double timeout)
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{
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handleEvents((int) (timeout * 1e3));
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handleEvents(&timeout);
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}
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void _glfwPlatformPostEmptyEvent(void)
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@ -1815,7 +1864,7 @@ const char* _glfwPlatformGetClipboardString(void)
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close(fds[1]);
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// XXX: this is a huge hack, this function shouldn’t be synchronous!
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handleEvents(-1);
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handleEvents(NULL);
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while (1)
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{
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