portability: replace epoll with poll
This commit is contained in:
Raphael Robatsch
parent
97176b3a10
commit
4b54d4b3d1
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@ -10,7 +10,6 @@ state.
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Important! dwl must have the wayland-ipc patch applied for this to work!
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https://git.sr.ht/~raphi/dwl/blob/master/patches/wayland-ipc.patch
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diff --git a/protocols/meson.build b/protocols/meson.build
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index 7bd222b..5752608 100644
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--- a/protocols/meson.build
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@ -194,7 +193,7 @@ index 0000000..390f5a1
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+ </interface>
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+</protocol>
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diff --git a/src/common.hpp b/src/common.hpp
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index 2170103..88db973 100644
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index 0d900f0..5f9c753 100644
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--- a/src/common.hpp
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+++ b/src/common.hpp
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@@ -10,6 +10,7 @@
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@ -218,9 +217,9 @@ index 2170103..88db973 100644
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+void tag(Monitor& m, const Arg& arg);
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+void toggletag(Monitor& m, const Arg& arg);
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void spawn(Monitor&, const Arg& arg);
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void setCloexec(int fd);
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[[noreturn]] void die(const char* why);
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@@ -57,6 +65,7 @@ WL_DELETER(wl_output, wl_output_release);
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@@ -59,6 +67,7 @@ WL_DELETER(wl_output, wl_output_release);
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WL_DELETER(wl_pointer, wl_pointer_release);
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WL_DELETER(wl_seat, wl_seat_release);
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WL_DELETER(wl_surface, wl_surface_destroy);
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@ -251,7 +250,7 @@ index 40a8c95..a9560cb 100644
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{ ClkStatusText, BTN_RIGHT, spawn, {.v = termcmd} },
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};
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diff --git a/src/main.cpp b/src/main.cpp
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index 6678ee8..22b1fad 100644
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index 0aeadb2..6c5c992 100644
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--- a/src/main.cpp
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+++ b/src/main.cpp
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@@ -3,7 +3,6 @@
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@ -262,7 +261,7 @@ index 6678ee8..22b1fad 100644
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#include <list>
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#include <optional>
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#include <utility>
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@@ -22,8 +21,8 @@
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@@ -21,8 +20,8 @@
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#include "wlr-layer-shell-unstable-v1-client-protocol.h"
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#include "xdg-output-unstable-v1-client-protocol.h"
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#include "xdg-shell-client-protocol.h"
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@ -272,7 +271,7 @@ index 6678ee8..22b1fad 100644
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#include "bar.hpp"
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#include "line_buffer.hpp"
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@@ -35,6 +34,7 @@ struct Monitor {
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@@ -34,6 +33,7 @@ struct Monitor {
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bool desiredVisibility {true};
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bool hasData;
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uint32_t tags;
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@ -280,7 +279,7 @@ index 6678ee8..22b1fad 100644
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};
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struct SeatPointer {
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@@ -55,8 +55,6 @@ static void updatemon(Monitor &mon);
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@@ -54,8 +54,6 @@ static void updatemon(Monitor &mon);
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static void onReady();
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static void setupStatusFifo();
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static void onStatus();
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@ -289,7 +288,7 @@ index 6678ee8..22b1fad 100644
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static void updateVisibility(const std::string& name, bool(*updater)(bool));
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static void onGlobalAdd(void*, wl_registry* registry, uint32_t name, const char* interface, uint32_t version);
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static void onGlobalRemove(void*, wl_registry* registry, uint32_t name);
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@@ -69,6 +67,9 @@ wl_display* display;
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@@ -67,6 +65,9 @@ wl_display* display;
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wl_compositor* compositor;
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wl_shm* shm;
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zwlr_layer_shell_v1* wlrLayerShell;
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@ -299,7 +298,7 @@ index 6678ee8..22b1fad 100644
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static xdg_wm_base* xdgWmBase;
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static zxdg_output_manager_v1* xdgOutputManager;
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static wl_surface* cursorSurface;
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@@ -86,6 +87,26 @@ static int statusFifoFd {-1};
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@@ -85,6 +86,26 @@ static int statusFifoFd {-1};
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static int statusFifoWriter {-1};
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static bool quitting {false};
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@ -326,7 +325,7 @@ index 6678ee8..22b1fad 100644
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void spawn(Monitor&, const Arg& arg)
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{
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if (fork() == 0) {
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@@ -189,11 +210,62 @@ static const struct wl_seat_listener seatListener = {
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@@ -188,11 +209,62 @@ static const struct wl_seat_listener seatListener = {
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.name = [](void*, wl_seat*, const char *name) { }
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};
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@ -389,7 +388,7 @@ index 6678ee8..22b1fad 100644
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}
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void updatemon(Monitor& mon)
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@@ -217,6 +289,7 @@ void onReady()
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@@ -216,6 +288,7 @@ void onReady()
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requireGlobal(shm, "wl_shm");
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requireGlobal(wlrLayerShell, "zwlr_layer_shell_v1");
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requireGlobal(xdgOutputManager, "zxdg_output_manager_v1");
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@ -397,7 +396,7 @@ index 6678ee8..22b1fad 100644
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setupStatusFifo();
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wl_display_roundtrip(display); // roundtrip so we receive all dwl tags etc.
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@@ -224,7 +297,6 @@ void onReady()
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@@ -223,7 +296,6 @@ void onReady()
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for (auto output : uninitializedOutputs) {
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setupMonitor(output.first, output.second);
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}
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@ -405,7 +404,7 @@ index 6678ee8..22b1fad 100644
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}
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void setupStatusFifo()
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@@ -259,66 +331,6 @@ void setupStatusFifo()
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@@ -256,66 +328,6 @@ void setupStatusFifo()
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}
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}
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@ -472,7 +471,7 @@ index 6678ee8..22b1fad 100644
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const std::string prefixStatus = "status ";
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const std::string prefixShow = "show ";
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const std::string prefixHide = "hide ";
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@@ -391,6 +403,10 @@ void onGlobalAdd(void*, wl_registry* registry, uint32_t name, const char* interf
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@@ -388,6 +400,10 @@ void onGlobalAdd(void*, wl_registry* registry, uint32_t name, const char* interf
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xdg_wm_base_add_listener(xdgWmBase, &xdgWmBaseListener, nullptr);
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return;
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}
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@ -483,26 +482,23 @@ index 6678ee8..22b1fad 100644
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if (wl_seat *wlSeat; reg.handle(wlSeat, wl_seat_interface, 7)) {
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auto& seat = seats.emplace_back(Seat {name, wl_unique_ptr<wl_seat> {wlSeat}});
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wl_seat_add_listener(wlSeat, &seatListener, &seat);
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@@ -491,13 +507,6 @@ int main(int argc, char* argv[])
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diesys("epoll_ctl add wayland_display");
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}
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- epollEv.events = EPOLLIN;
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- epollEv.data.fd = STDIN_FILENO;
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- if (epoll_ctl(epoll, EPOLL_CTL_ADD, STDIN_FILENO, &epollEv) < 0) {
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- diesys("epoll_ctl add stdin");
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- }
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- fcntl(STDIN_FILENO, F_SETFL, O_NONBLOCK);
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-
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while (!quitting) {
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waylandFlush();
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auto res = epoll_wait(epoll, epollEvents.data(), epollEvents.size(), -1);
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@@ -521,8 +530,6 @@ int main(int argc, char* argv[])
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@@ -489,10 +505,6 @@ int main(int argc, char* argv[])
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.fd = displayFd,
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.events = POLLIN,
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});
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- pollfds.push_back({
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- .fd = STDIN_FILENO,
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- .events = POLLIN,
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- });
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if (fcntl(STDIN_FILENO, F_SETFL, O_NONBLOCK) < 0) {
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diesys("fcntl F_SETFL");
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}
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@@ -517,8 +529,6 @@ int main(int argc, char* argv[])
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ev.events = POLLIN;
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waylandFlush();
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}
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- } else if (ev.data.fd == STDIN_FILENO) {
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- } else if (ev.fd == STDIN_FILENO && (ev.revents & POLLIN)) {
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- onStdin();
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} else if (ev.data.fd == statusFifoFd) {
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} else if (ev.fd == statusFifoFd && (ev.revents & POLLIN)) {
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onStatus();
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} else if (ev.data.fd == sfd) {
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} else if (ev.fd == signalSelfPipe[0] && (ev.revents & POLLIN)) {
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87
src/main.cpp
87
src/main.cpp
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@ -9,8 +9,8 @@
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#include <utility>
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#include <vector>
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#include <fcntl.h>
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#include <poll.h>
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#include <signal.h>
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#include <sys/epoll.h>
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#include <sys/mman.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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@ -79,7 +79,7 @@ static std::list<Seat> seats;
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static Monitor* selmon;
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static std::string lastStatus;
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static std::string statusFifoName;
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static int epoll {-1};
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static std::vector<pollfd> pollfds;
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static std::array<int, 2> signalSelfPipe;
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static int displayFd {-1};
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static int statusFifoFd {-1};
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@ -246,12 +246,10 @@ void setupStatusFifo()
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}
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statusFifoWriter = fd;
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epoll_event ev = {0};
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ev.events = EPOLLIN;
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ev.data.fd = statusFifoFd;
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if (epoll_ctl(epoll, EPOLL_CTL_ADD, statusFifoFd, &ev) < 0) {
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diesys("epoll_ctl add status fifo");
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}
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pollfds.push_back({
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.fd = statusFifoFd,
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.events = POLLIN,
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});
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return;
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} else if (errno != EEXIST) {
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diesys("mkfifo");
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@ -472,18 +470,10 @@ int main(int argc, char* argv[])
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diesys("sigaction");
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}
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epoll_event epollEv = {0};
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std::array<epoll_event, 5> epollEvents;
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epoll = epoll_create1(EPOLL_CLOEXEC);
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if (epoll < 0) {
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diesys("epoll_create1");
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}
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epollEv.events = EPOLLIN;
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epollEv.data.fd = signalSelfPipe[0];
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if (epoll_ctl(epoll, EPOLL_CTL_ADD, signalSelfPipe[0], &epollEv) < 0) {
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diesys("epoll_ctl add signal pipe");
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}
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pollfds.push_back({
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.fd = signalSelfPipe[0],
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.events = POLLIN,
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});
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display = wl_display_connect(nullptr);
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if (!display) {
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@ -496,47 +486,43 @@ int main(int argc, char* argv[])
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wl_display_roundtrip(display);
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onReady();
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epollEv.events = EPOLLIN;
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epollEv.data.fd = displayFd;
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if (epoll_ctl(epoll, EPOLL_CTL_ADD, displayFd, &epollEv) < 0) {
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diesys("epoll_ctl add wayland_display");
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pollfds.push_back({
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.fd = displayFd,
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.events = POLLIN,
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});
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pollfds.push_back({
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.fd = STDIN_FILENO,
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.events = POLLIN,
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});
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if (fcntl(STDIN_FILENO, F_SETFL, O_NONBLOCK) < 0) {
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diesys("fcntl F_SETFL");
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}
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epollEv.events = EPOLLIN;
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epollEv.data.fd = STDIN_FILENO;
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if (epoll_ctl(epoll, EPOLL_CTL_ADD, STDIN_FILENO, &epollEv) < 0) {
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diesys("epoll_ctl add stdin");
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}
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fcntl(STDIN_FILENO, F_SETFL, O_NONBLOCK);
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while (!quitting) {
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waylandFlush();
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auto res = epoll_wait(epoll, epollEvents.data(), epollEvents.size(), -1);
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if (res < 0) {
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if (poll(pollfds.data(), pollfds.size(), -1) < 0) {
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if (errno != EINTR) {
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diesys("epoll_wait");
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diesys("poll");
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}
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} else {
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for (auto i=0; i<res; i++) {
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auto &ev = epollEvents[i];
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if (ev.data.fd == displayFd) {
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if (ev.events & EPOLLIN) {
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for (auto& ev : pollfds) {
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if (ev.revents & POLLNVAL) {
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die("poll revents contains POLLNVAL");
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} else if (ev.fd == displayFd) {
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if (ev.revents & POLLIN) {
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if (wl_display_dispatch(display) < 0) {
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die("wl_display_dispatch");
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}
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} if (ev.events & EPOLLOUT) {
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epollEv.events = EPOLLIN;
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epollEv.data.fd = displayFd;
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if (epoll_ctl(epoll, EPOLL_CTL_MOD, displayFd, &epollEv) < 0) {
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diesys("epoll_ctl");
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}
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if (ev.revents & POLLOUT) {
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ev.events = POLLIN;
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waylandFlush();
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}
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} else if (ev.data.fd == STDIN_FILENO) {
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} else if (ev.fd == STDIN_FILENO && (ev.revents & POLLIN)) {
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onStdin();
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} else if (ev.data.fd == statusFifoFd) {
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} else if (ev.fd == statusFifoFd && (ev.revents & POLLIN)) {
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onStatus();
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} else if (ev.data.fd == signalSelfPipe[0]) {
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} else if (ev.fd == signalSelfPipe[0] && (ev.revents & POLLIN)) {
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quitting = true;
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}
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}
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@ -557,11 +543,10 @@ void waylandFlush()
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{
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wl_display_dispatch_pending(display);
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if (wl_display_flush(display) < 0 && errno == EAGAIN) {
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epoll_event ev = {0};
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ev.events = EPOLLIN | EPOLLOUT;
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ev.data.fd = displayFd;
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if (epoll_ctl(epoll, EPOLL_CTL_MOD, displayFd, &ev) < 0) {
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diesys("epoll_ctl");
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for (auto& ev : pollfds) {
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if (ev.fd == displayFd) {
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ev.events |= POLLOUT;
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}
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}
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}
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}
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