Do not warn on terminating the server

If the server is already dead, terminating it fails. This is expected.

.gitignore

@@ -2,4 +2,3 @@ build/
 /dist/
 .idea/
 .gradle/
-/x/

README.md

@@ -491,8 +491,6 @@ Also see [issue #14].
  | Action                                 |   Shortcut                    |   Shortcut (macOS)
  | -------------------------------------- |:----------------------------- |:-----------------------------
  | Switch fullscreen mode                 | `Ctrl`+`f`                    | `Cmd`+`f`
- | Rotate window left                     | `Ctrl`+`←` _(left)_           | `Cmd`+`←` _(left)_
- | Rotate window right                    | `Ctrl`+`→` _(right)_          | `Cmd`+`→` _(right)_
  | Resize window to 1:1 (pixel-perfect)   | `Ctrl`+`g`                    | `Cmd`+`g`
  | Resize window to remove black borders  | `Ctrl`+`x` \| _Double-click¹_ | `Cmd`+`x`  \| _Double-click¹_
  | Click on `HOME`                        | `Ctrl`+`h` \| _Middle-click_  | `Ctrl`+`h` \| _Middle-click_

app/scrcpy.1

@@ -166,14 +166,6 @@ Default is 0 (automatic).\n
 .B Ctrl+f
 switch fullscreen mode
 
-.TP
-.B Ctrl+Left
-rotate window left
-
-.TP
-.B Ctrl+Right
-rotate window right
-
 .TP
 .B Ctrl+g
 resize window to 1:1 (pixel\-perfect)

app/src/cli.c

@@ -145,12 +145,6 @@ scrcpy_print_usage(const char *arg0) {
         "    " CTRL_OR_CMD "+f\n"
         "        switch fullscreen mode\n"
         "\n"
-        "    " CTRL_OR_CMD "+Left\n"
-        "        rotate window left\n"
-        "\n"
-        "    " CTRL_OR_CMD "+Right\n"
-        "        rotate window right\n"
-        "\n"
         "    " CTRL_OR_CMD "+g\n"
         "        resize window to 1:1 (pixel-perfect)\n"
         "\n"

app/src/fps_counter.c

@@ -23,7 +23,7 @@ fps_counter_init(struct fps_counter *counter) {
     }
 
     counter->thread = NULL;
-    atomic_init(&counter->started, 0);
+    SDL_AtomicSet(&counter->started, 0);
     // no need to initialize the other fields, they are unused until started
 
     return true;
@@ -35,16 +35,6 @@ fps_counter_destroy(struct fps_counter *counter) {
     SDL_DestroyMutex(counter->mutex);
 }
 
-static inline bool
-is_started(struct fps_counter *counter) {
-    return atomic_load_explicit(&counter->started, memory_order_acquire);
-}
-
-static inline void
-set_started(struct fps_counter *counter, bool started) {
-    atomic_store_explicit(&counter->started, started, memory_order_release);
-}
-
 // must be called with mutex locked
 static void
 display_fps(struct fps_counter *counter) {
@@ -80,10 +70,10 @@ run_fps_counter(void *data) {
 
     mutex_lock(counter->mutex);
     while (!counter->interrupted) {
-        while (!counter->interrupted && !is_started(counter)) {
+        while (!counter->interrupted && !SDL_AtomicGet(&counter->started)) {
             cond_wait(counter->state_cond, counter->mutex);
         }
-        while (!counter->interrupted && is_started(counter)) {
+        while (!counter->interrupted && SDL_AtomicGet(&counter->started)) {
             uint32_t now = SDL_GetTicks();
             check_interval_expired(counter, now);
 
@@ -106,7 +96,7 @@ fps_counter_start(struct fps_counter *counter) {
     counter->nr_skipped = 0;
     mutex_unlock(counter->mutex);
 
-    set_started(counter, true);
+    SDL_AtomicSet(&counter->started, 1);
     cond_signal(counter->state_cond);
 
     // counter->thread is always accessed from the same thread, no need to lock
@@ -124,13 +114,13 @@ fps_counter_start(struct fps_counter *counter) {
 
 void
 fps_counter_stop(struct fps_counter *counter) {
-    set_started(counter, false);
+    SDL_AtomicSet(&counter->started, 0);
     cond_signal(counter->state_cond);
 }
 
 bool
 fps_counter_is_started(struct fps_counter *counter) {
-    return is_started(counter);
+    return SDL_AtomicGet(&counter->started);
 }
 
 void
@@ -155,7 +145,7 @@ fps_counter_join(struct fps_counter *counter) {
 
 void
 fps_counter_add_rendered_frame(struct fps_counter *counter) {
-    if (!is_started(counter)) {
+    if (!SDL_AtomicGet(&counter->started)) {
         return;
     }
 
@@ -168,7 +158,7 @@ fps_counter_add_rendered_frame(struct fps_counter *counter) {
 
 void
 fps_counter_add_skipped_frame(struct fps_counter *counter) {
-    if (!is_started(counter)) {
+    if (!SDL_AtomicGet(&counter->started)) {
         return;
     }
 

app/src/fps_counter.h

@@ -1,9 +1,9 @@
 #ifndef FPSCOUNTER_H
 #define FPSCOUNTER_H
 
-#include <stdatomic.h>
 #include <stdbool.h>
 #include <stdint.h>
+#include <SDL2/SDL_atomic.h>
 #include <SDL2/SDL_mutex.h>
 #include <SDL2/SDL_thread.h>
 
@@ -16,7 +16,7 @@ struct fps_counter {
 
     // atomic so that we can check without locking the mutex
     // if the FPS counter is disabled, we don't want to lock unnecessarily
-    atomic_bool started;
+    SDL_atomic_t started;
 
     // the following fields are protected by the mutex
     bool interrupted;

app/src/input_manager.c

@@ -221,18 +221,6 @@ rotate_device(struct controller *controller) {
     }
 }
 
-static void
-rotate_client_left(struct screen *screen) {
-    unsigned new_rotation = (screen->rotation + 3) % 4;
-    screen_set_rotation(screen, new_rotation);
-}
-
-static void
-rotate_client_right(struct screen *screen) {
-    unsigned new_rotation = (screen->rotation + 1) % 4;
-    screen_set_rotation(screen, new_rotation);
-}
-
 void
 input_manager_process_text_input(struct input_manager *im,
                                  const SDL_TextInputEvent *event) {
@@ -363,16 +351,6 @@ input_manager_process_key(struct input_manager *im,
                     action_volume_up(controller, action);
                 }
                 return;
-            case SDLK_LEFT:
-                if (cmd && !shift && down) {
-                    rotate_client_left(im->screen);
-                }
-                return;
-            case SDLK_RIGHT:
-                if (cmd && !shift && down) {
-                    rotate_client_right(im->screen);
-                }
-                return;
             case SDLK_c:
                 if (control && cmd && !shift && !repeat && down) {
                     request_device_clipboard(controller);

app/src/screen.c

@@ -15,19 +15,6 @@
 
 #define DISPLAY_MARGINS 96
 
-static inline struct size
-get_rotated_size(struct size size, int rotation) {
-    struct size rotated_size;
-    if (rotation & 1) {
-        rotated_size.width = size.height;
-        rotated_size.height = size.width;
-    } else {
-        rotated_size.width = size.width;
-        rotated_size.height = size.height;
-    }
-    return rotated_size;
-}
-
 // get the window size in a struct size
 static struct size
 get_window_size(SDL_Window *window) {
@@ -93,8 +80,8 @@ get_preferred_display_bounds(struct size *bounds) {
 //  - it keeps the aspect ratio
 //  - it scales down to make it fit in the display_size
 static struct size
-get_optimal_size(struct size current_size, struct size content_size) {
-    if (content_size.width == 0 || content_size.height == 0) {
+get_optimal_size(struct size current_size, struct size frame_size) {
+    if (frame_size.width == 0 || frame_size.height == 0) {
         // avoid division by 0
         return current_size;
     }
@@ -113,14 +100,14 @@ get_optimal_size(struct size current_size, struct size content_size) {
         h = MIN(current_size.height, display_size.height);
     }
 
-    bool keep_width = content_size.width * h > content_size.height * w;
+    bool keep_width = frame_size.width * h > frame_size.height * w;
     if (keep_width) {
         // remove black borders on top and bottom
-        h = content_size.height * w / content_size.width;
+        h = frame_size.height * w / frame_size.width;
     } else {
         // remove black borders on left and right (or none at all if it already
         // fits)
-        w = content_size.width * h / content_size.height;
+        w = frame_size.width * h / frame_size.height;
     }
 
     // w and h must fit into 16 bits
@@ -130,33 +117,33 @@ get_optimal_size(struct size current_size, struct size content_size) {
 
 // same as get_optimal_size(), but read the current size from the window
 static inline struct size
-get_optimal_window_size(const struct screen *screen, struct size content_size) {
+get_optimal_window_size(const struct screen *screen, struct size frame_size) {
     struct size windowed_size = get_windowed_window_size(screen);
-    return get_optimal_size(windowed_size, content_size);
+    return get_optimal_size(windowed_size, frame_size);
 }
 
 // initially, there is no current size, so use the frame size as current size
 // req_width and req_height, if not 0, are the sizes requested by the user
 static inline struct size
-get_initial_optimal_size(struct size content_size, uint16_t req_width,
+get_initial_optimal_size(struct size frame_size, uint16_t req_width,
                          uint16_t req_height) {
     struct size window_size;
     if (!req_width && !req_height) {
-        window_size = get_optimal_size(content_size, content_size);
+        window_size = get_optimal_size(frame_size, frame_size);
     } else {
         if (req_width) {
             window_size.width = req_width;
         } else {
             // compute from the requested height
-            window_size.width = (uint32_t) req_height * content_size.width
-                              / content_size.height;
+            window_size.width = (uint32_t) req_height * frame_size.width
+                              / frame_size.height;
         }
         if (req_height) {
             window_size.height = req_height;
         } else {
             // compute from the requested width
-            window_size.height = (uint32_t) req_width * content_size.height
-                               / content_size.width;
+            window_size.height = (uint32_t) req_width * frame_size.height
+                               / frame_size.width;
         }
     }
     return window_size;
@@ -180,11 +167,9 @@ screen_init_rendering(struct screen *screen, const char *window_title,
                       int16_t window_x, int16_t window_y, uint16_t window_width,
                       uint16_t window_height, bool window_borderless) {
     screen->frame_size = frame_size;
-    struct size content_size =
-        get_rotated_size(frame_size, screen->rotation);
 
     struct size window_size =
-        get_initial_optimal_size(content_size, window_width, window_height);
+        get_initial_optimal_size(frame_size, window_width, window_height);
     uint32_t window_flags = SDL_WINDOW_HIDDEN | SDL_WINDOW_RESIZABLE;
 #ifdef HIDPI_SUPPORT
     window_flags |= SDL_WINDOW_ALLOW_HIGHDPI;
@@ -221,8 +206,8 @@ screen_init_rendering(struct screen *screen, const char *window_title,
         return false;
     }
 
-    if (SDL_RenderSetLogicalSize(screen->renderer, content_size.width,
-                                 content_size.height)) {
+    if (SDL_RenderSetLogicalSize(screen->renderer, frame_size.width,
+                                 frame_size.height)) {
         LOGE("Could not set renderer logical size: %s", SDL_GetError());
         screen_destroy(screen);
         return false;
@@ -268,51 +253,13 @@ screen_destroy(struct screen *screen) {
     }
 }
 
-void
-screen_set_rotation(struct screen *screen, unsigned rotation) {
-    assert(rotation < 4);
-    if (rotation == screen->rotation) {
-        return;
-    }
-
-    struct size old_content_size =
-        get_rotated_size(screen->frame_size, screen->rotation);
-    struct size new_content_size =
-        get_rotated_size(screen->frame_size, rotation);
-
-    if (SDL_RenderSetLogicalSize(screen->renderer,
-                                 new_content_size.width,
-                                 new_content_size.height)) {
-        LOGE("Could not set renderer logical size: %s", SDL_GetError());
-        return;
-    }
-
-    struct size windowed_size = get_windowed_window_size(screen);
-    struct size target_size = {
-        .width = (uint32_t) windowed_size.width * new_content_size.width
-                / old_content_size.width,
-        .height = (uint32_t) windowed_size.height * new_content_size.height
-                / old_content_size.height,
-    };
-    target_size = get_optimal_size(target_size, new_content_size);
-    set_window_size(screen, target_size);
-
-    screen->rotation = rotation;
-    LOGI("Client rotation set to %u", rotation);
-
-    screen_render(screen);
-}
-
 // recreate the texture and resize the window if the frame size has changed
 static bool
 prepare_for_frame(struct screen *screen, struct size new_frame_size) {
     if (screen->frame_size.width != new_frame_size.width
             || screen->frame_size.height != new_frame_size.height) {
-        struct size new_content_size =
-            get_rotated_size(new_frame_size, screen->rotation);
-        if (SDL_RenderSetLogicalSize(screen->renderer,
-                                     new_content_size.width,
-                                     new_content_size.height)) {
+        if (SDL_RenderSetLogicalSize(screen->renderer, new_frame_size.width,
+                                     new_frame_size.height)) {
             LOGE("Could not set renderer logical size: %s", SDL_GetError());
             return false;
         }
@@ -320,16 +267,14 @@ prepare_for_frame(struct screen *screen, struct size new_frame_size) {
         // frame dimension changed, destroy texture
         SDL_DestroyTexture(screen->texture);
 
-        struct size content_size =
-            get_rotated_size(screen->frame_size, screen->rotation);
         struct size windowed_size = get_windowed_window_size(screen);
         struct size target_size = {
-            (uint32_t) windowed_size.width * new_content_size.width
-                    / content_size.width,
-            (uint32_t) windowed_size.height * new_content_size.height
-                    / content_size.height,
+            (uint32_t) windowed_size.width * new_frame_size.width
+                    / screen->frame_size.width,
+            (uint32_t) windowed_size.height * new_frame_size.height
+                    / screen->frame_size.height,
         };
-        target_size = get_optimal_size(target_size, new_content_size);
+        target_size = get_optimal_size(target_size, new_frame_size);
         set_window_size(screen, target_size);
 
         screen->frame_size = new_frame_size;
@@ -374,27 +319,7 @@ screen_update_frame(struct screen *screen, struct video_buffer *vb) {
 void
 screen_render(struct screen *screen) {
     SDL_RenderClear(screen->renderer);
-    if (screen->rotation == 0) {
-        SDL_RenderCopy(screen->renderer, screen->texture, NULL, NULL);
-    } else {
-        double angle = 90 * screen->rotation;
-
-        SDL_Rect *dstrect = NULL;
-        SDL_Rect rect;
-        if (screen->rotation & 1) {
-            struct size size =
-                get_rotated_size(screen->frame_size, screen->rotation);
-            rect.x = (size.width - size.height) / 2;
-            rect.y = (size.height - size.width) / 2;
-            rect.w = size.height;
-            rect.h = size.width;
-            dstrect = &rect;
-        }
-
-        // rotation in RenderCopyEx() is clockwise
-        SDL_RenderCopyEx(screen->renderer, screen->texture, NULL, dstrect,
-                         angle, NULL, 0);
-    }
+    SDL_RenderCopy(screen->renderer, screen->texture, NULL, NULL);
     SDL_RenderPresent(screen->renderer);
 }
 
@@ -424,10 +349,8 @@ screen_resize_to_fit(struct screen *screen) {
         screen->maximized = false;
     }
 
-    struct size content_size =
-        get_rotated_size(screen->frame_size, screen->rotation);
     struct size optimal_size =
-        get_optimal_window_size(screen, content_size);
+        get_optimal_window_size(screen, screen->frame_size);
     SDL_SetWindowSize(screen->window, optimal_size.width, optimal_size.height);
     LOGD("Resized to optimal size");
 }
@@ -443,9 +366,8 @@ screen_resize_to_pixel_perfect(struct screen *screen) {
         screen->maximized = false;
     }
 
-    struct size content_size =
-        get_rotated_size(screen->frame_size, screen->rotation);
-    SDL_SetWindowSize(screen->window, content_size.width, content_size.height);
+    SDL_SetWindowSize(screen->window, screen->frame_size.width,
+                      screen->frame_size.height);
     LOGD("Resized to pixel-perfect");
 }
 

app/src/screen.h

@@ -22,8 +22,6 @@ struct screen {
     // Since we receive the event SIZE_CHANGED before MAXIMIZED, we must be
     // able to revert the size to its non-maximized value.
     struct size windowed_window_size_backup;
-    // client rotation: 0, 1, 2 or 3 (x90 degrees clockwise)
-    unsigned rotation;
     bool has_frame;
     bool fullscreen;
     bool maximized;
@@ -46,7 +44,6 @@ struct screen {
         .width = 0, \
         .height = 0, \
     }, \
-    .rotation = 0, \
     .has_frame = false, \
     .fullscreen = false, \
     .maximized = false, \
@@ -93,10 +90,6 @@ screen_resize_to_fit(struct screen *screen);
 void
 screen_resize_to_pixel_perfect(struct screen *screen);
 
-// change the client rotation (0, 1, 2 or 3, x90 degrees clockwise)
-void
-screen_set_rotation(struct screen *screen, unsigned rotation);
-
 // react to window events
 void
 screen_handle_window_event(struct screen *screen, const SDL_WindowEvent *event);

app/src/server.c

@@ -5,6 +5,7 @@
 #include <inttypes.h>
 #include <libgen.h>
 #include <stdio.h>
+#include <unistd.h>
 #include <SDL2/SDL_thread.h>
 #include <SDL2/SDL_timer.h>
 #include <SDL2/SDL_platform.h>
@@ -318,12 +319,14 @@ connect_to_server(uint16_t port, uint32_t attempts, uint32_t delay) {
 }
 
 static void
-close_socket(socket_t socket) {
-    assert(socket != INVALID_SOCKET);
-    net_shutdown(socket, SHUT_RDWR);
-    if (!net_close(socket)) {
+close_socket(socket_t *socket) {
+    assert(*socket != INVALID_SOCKET);
+    net_shutdown(*socket, SHUT_RDWR);
+    if (!net_close(*socket)) {
         LOGW("Could not close socket");
+        return;
     }
+    *socket = INVALID_SOCKET;
 }
 
 void
@@ -335,14 +338,10 @@ static int
 run_wait_server(void *data) {
     struct server *server = data;
     cmd_simple_wait(server->process, NULL); // ignore exit code
-    // no need for synchronization, server_socket is initialized before this
-    // thread was created
-    if (server->server_socket != INVALID_SOCKET
-            && !atomic_flag_test_and_set(&server->server_socket_closed)) {
-        // On Linux, accept() is unblocked by shutdown(), but on Windows, it is
-        // unblocked by closesocket(). Therefore, call both (close_socket()).
-        close_socket(server->server_socket);
-    }
+
+    // wake up any net_select_interruptible()
+    close(server->pipe_intr[1]);
+
     LOGD("Server terminated");
     return 0;
 }
@@ -367,38 +366,36 @@ server_start(struct server *server, const char *serial,
         goto error1;
     }
 
-    // server will connect to our server socket
-    server->process = execute_server(server, params);
-    if (server->process == PROCESS_NONE) {
+    bool ok = net_pipe(server->pipe_intr);
+    if (!ok) {
+        perror("pipe");
         goto error2;
     }
 
-    // If the server process dies before connecting to the server socket, then
-    // the client will be stuck forever on accept(). To avoid the problem, we
-    // must be able to wake up the accept() call when the server dies. To keep
-    // things simple and multiplatform, just spawn a new thread waiting for the
-    // server process and calling shutdown()/close() on the server socket if
-    // necessary to wake up any accept() blocking call.
+    // server will connect to our server socket
+    server->process = execute_server(server, params);
+    if (server->process == PROCESS_NONE) {
+        goto error3;
+    }
+
     server->wait_server_thread =
         SDL_CreateThread(run_wait_server, "wait-server", server);
     if (!server->wait_server_thread) {
         cmd_terminate(server->process);
         cmd_simple_wait(server->process, NULL); // ignore exit code
-        goto error2;
+        goto error3;
     }
 
     server->tunnel_enabled = true;
 
     return true;
 
+error3:
+    close(server->pipe_intr[0]);
+    close(server->pipe_intr[1]);
 error2:
     if (!server->tunnel_forward) {
-        bool was_closed =
-            atomic_flag_test_and_set(&server->server_socket_closed);
-        // the thread is not started, the flag could not be already set
-        assert(!was_closed);
-        (void) was_closed;
-        close_socket(server->server_socket);
+        close_socket(&server->server_socket);
     }
     disable_tunnel(server);
 error1:
@@ -409,23 +406,34 @@ error1:
 bool
 server_connect_to(struct server *server) {
     if (!server->tunnel_forward) {
+        bool acceptable = net_select_interruptible(server->server_socket,
+                                                   server->pipe_intr[0]);
+        if (!acceptable) {
+            // the process died, accept() would never succeed
+            return false;
+        }
+
         server->video_socket = net_accept(server->server_socket);
         if (server->video_socket == INVALID_SOCKET) {
             return false;
         }
 
+        acceptable = net_select_interruptible(server->server_socket,
+                                              server->pipe_intr[0]);
+        if (!acceptable) {
+            // the process died, accept() would never succeed
+            return false;
+        }
         server->control_socket = net_accept(server->server_socket);
         if (server->control_socket == INVALID_SOCKET) {
             // the video_socket will be cleaned up on destroy
             return false;
         }
 
+        close(server->pipe_intr[0]);
+
         // we don't need the server socket anymore
-        if (!atomic_flag_test_and_set(&server->server_socket_closed)) {
-            // close it from here
-            close_socket(server->server_socket);
-            // otherwise, it is closed by run_wait_server()
-        }
+        close_socket(&server->server_socket);
     } else {
         uint32_t attempts = 100;
         uint32_t delay = 100; // ms
@@ -452,15 +460,14 @@ server_connect_to(struct server *server) {
 
 void
 server_stop(struct server *server) {
-    if (server->server_socket != INVALID_SOCKET
-            && !atomic_flag_test_and_set(&server->server_socket_closed)) {
-        close_socket(server->server_socket);
+    if (server->server_socket != INVALID_SOCKET) {
+        close_socket(&server->server_socket);
     }
     if (server->video_socket != INVALID_SOCKET) {
-        close_socket(server->video_socket);
+        close_socket(&server->video_socket);
     }
     if (server->control_socket != INVALID_SOCKET) {
-        close_socket(server->control_socket);
+        close_socket(&server->control_socket);
     }
 
     assert(server->process != PROCESS_NONE);

app/src/server.h

@@ -1,7 +1,6 @@
 #ifndef SERVER_H
 #define SERVER_H
 
-#include <stdatomic.h>
 #include <stdbool.h>
 #include <stdint.h>
 #include <SDL2/SDL_thread.h>
@@ -15,7 +14,7 @@ struct server {
     char *serial;
     process_t process;
     SDL_Thread *wait_server_thread;
-    atomic_flag server_socket_closed;
+    int pipe_intr[2]; // to wake up blocking accept() on process exit
     socket_t server_socket; // only used if !tunnel_forward
     socket_t video_socket;
     socket_t control_socket;
@@ -28,8 +27,6 @@ struct server {
 #define SERVER_INITIALIZER { \
     .serial = NULL, \
     .process = PROCESS_NONE, \
-    .wait_server_thread = NULL, \
-    .server_socket_closed = ATOMIC_FLAG_INIT, \
     .server_socket = INVALID_SOCKET, \
     .video_socket = INVALID_SOCKET, \
     .control_socket = INVALID_SOCKET, \

app/src/util/net.c

@@ -1,16 +1,22 @@
 #include "net.h"
 
+#include <assert.h>
+#include <errno.h>
 #include <stdio.h>
 #include <SDL2/SDL_platform.h>
 
 #include "config.h"
+#include "common.h"
 #include "log.h"
 
 #ifdef __WINDOWS__
+# include <io.h>
+# include <winsock2.h>
   typedef int socklen_t;
 #else
-# include <sys/types.h>
+# include <sys/select.h>
 # include <sys/socket.h>
+# include <sys/types.h>
 # include <netinet/in.h>
 # include <arpa/inet.h>
 # include <unistd.h>
@@ -145,3 +151,38 @@ net_close(socket_t socket) {
     return !close(socket);
 #endif
 }
+
+bool
+net_select_interruptible(int fd, int fd_intr) {
+    fd_set rfds;
+
+    FD_ZERO(&rfds);
+    FD_SET(fd, &rfds);
+    FD_SET(fd_intr, &rfds);
+
+    int nfds = MAX(fd, fd_intr) + 1;
+
+    // use select() because it's available on supported platforms
+    int r = select(nfds, &rfds, NULL, NULL, NULL);
+    if (r == -1) {
+        // failure
+        return false;
+    }
+    assert(r > 0);
+    if (FD_ISSET(fd_intr, &rfds)) {
+        // interrupted is set
+        return false;
+    }
+
+    assert(FD_ISSET(fd, &rfds));
+    return true;
+}
+
+bool
+net_pipe(int fds[static 2]) {
+#ifdef __WINDOWS__
+    return !_pipe(fds, 4096, 0);
+#else
+    return !pipe(fds);
+#endif
+}

app/src/util/net.h

@@ -54,4 +54,12 @@ net_shutdown(socket_t socket, int how);
 bool
 net_close(socket_t socket);
 
+// wait for fd or fd_intr to be readable
+// return true if fd is readable and fd_intr is not
+bool
+net_select_interruptible(int fd, int fd_intr);
+
+bool
+net_pipe(int fd[static 2]);
+
 #endif

build.gradle

@@ -7,7 +7,7 @@ buildscript {
         jcenter()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.6.2'
+        classpath 'com.android.tools.build:gradle:3.4.2'
 
         // NOTE: Do not place your application dependencies here; they belong
         // in the individual module build.gradle files

gradle/wrapper/gradle-wrapper.properties

@@ -1,5 +1,5 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-6.3-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-5.5.1-all.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists

gradlew

@@ -125,8 +125,8 @@ if $darwin; then
     GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
 fi
 
-# For Cygwin or MSYS, switch paths to Windows format before running java
-if [ "$cygwin" = "true" -o "$msys" = "true" ] ; then
+# For Cygwin, switch paths to Windows format before running java
+if $cygwin ; then
     APP_HOME=`cygpath --path --mixed "$APP_HOME"`
     CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
     JAVACMD=`cygpath --unix "$JAVACMD"`
@@ -154,19 +154,19 @@ if [ "$cygwin" = "true" -o "$msys" = "true" ] ; then
         else
             eval `echo args$i`="\"$arg\""
         fi
-        i=`expr $i + 1`
+        i=$((i+1))
     done
     case $i in
-        0) set -- ;;
-        1) set -- "$args0" ;;
-        2) set -- "$args0" "$args1" ;;
-        3) set -- "$args0" "$args1" "$args2" ;;
-        4) set -- "$args0" "$args1" "$args2" "$args3" ;;
-        5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
-        6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
-        7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
-        8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
-        9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
+        (0) set -- ;;
+        (1) set -- "$args0" ;;
+        (2) set -- "$args0" "$args1" ;;
+        (3) set -- "$args0" "$args1" "$args2" ;;
+        (4) set -- "$args0" "$args1" "$args2" "$args3" ;;
+        (5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
+        (6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
+        (7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
+        (8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
+        (9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
     esac
 fi
 
@@ -175,9 +175,14 @@ save () {
     for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
     echo " "
 }
-APP_ARGS=`save "$@"`
+APP_ARGS=$(save "$@")
 
 # Collect all arguments for the java command, following the shell quoting and substitution rules
 eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
 
+# by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong
+if [ "$(uname)" = "Darwin" ] && [ "$HOME" = "$PWD" ]; then
+  cd "$(dirname "$0")"
+fi
+
 exec "$JAVACMD" "$@"

gradlew.bat

@@ -29,9 +29,6 @@ if "%DIRNAME%" == "" set DIRNAME=.
 set APP_BASE_NAME=%~n0
 set APP_HOME=%DIRNAME%
 
-@rem Resolve any "." and ".." in APP_HOME to make it shorter.
-for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi
-
 @rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
 set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"
 

server/src/main/java/com/genymobile/scrcpy/Device.java

@@ -163,10 +163,8 @@ public final class Device {
     }
 
     public void setClipboardText(String text) {
-        boolean ok = serviceManager.getClipboardManager().setText(text);
-        if (ok) {
-            Ln.i("Device clipboard set");
-        }
+        serviceManager.getClipboardManager().setText(text);
+        Ln.i("Device clipboard set");
     }
 
     /**
@@ -178,10 +176,8 @@ public final class Device {
             Ln.e("Could not get built-in display");
             return;
         }
-        boolean ok = SurfaceControl.setDisplayPowerMode(d, mode);
-        if (ok) {
-            Ln.i("Device screen turned " + (mode == Device.POWER_MODE_OFF ? "off" : "on"));
-        }
+        SurfaceControl.setDisplayPowerMode(d, mode);
+        Ln.i("Device screen turned " + (mode == Device.POWER_MODE_OFF ? "off" : "on"));
     }
 
     /**

server/src/main/java/com/genymobile/scrcpy/wrappers/ClipboardManager.java

@@ -74,15 +74,13 @@ public class ClipboardManager {
         }
     }
 
-    public boolean setText(CharSequence text) {
+    public void setText(CharSequence text) {
         try {
             Method method = getSetPrimaryClipMethod();
             ClipData clipData = ClipData.newPlainText(null, text);
             setPrimaryClip(method, manager, clipData);
-            return true;
         } catch (InvocationTargetException | IllegalAccessException | NoSuchMethodException e) {
             Ln.e("Could not invoke method", e);
-            return false;
         }
     }
 }

server/src/main/java/com/genymobile/scrcpy/wrappers/SurfaceControl.java

@@ -121,14 +121,12 @@ public final class SurfaceControl {
         return setDisplayPowerModeMethod;
     }
 
-    public static boolean setDisplayPowerMode(IBinder displayToken, int mode) {
+    public static void setDisplayPowerMode(IBinder displayToken, int mode) {
         try {
             Method method = getSetDisplayPowerModeMethod();
             method.invoke(null, displayToken, mode);
-            return true;
         } catch (InvocationTargetException | IllegalAccessException | NoSuchMethodException e) {
             Ln.e("Could not invoke method", e);
-            return false;
         }
     }