Do not explicitly kill server

Let the server terminate properly once all the sockets are closed.

Fixes #1992 <https://github.com/Genymobile/scrcpy/issues/1992>

FAQ.md

@@ -201,39 +201,3 @@ scrcpy -m 800
 ```
 
 You could also try another [encoder](README.md#encoder).
-
-
-## Command line on Windows
-
-Some Windows users are not familiar with the command line. Here is how to open a
-terminal and run `scrcpy` with arguments:
-
- 1. Press <kbd>Windows</kbd>+<kbd>r</kbd>, this opens a dialog box.
- 2. Type `cmd` and press <kbd>Enter</kbd>, this opens a terminal.
- 3. Go to your _scrcpy_ directory, by typing (adapt the path):
-
-    ```bat
-    cd C:\Users\user\Downloads\scrcpy-win64-xxx
-    ```
-
-    and press <kbd>Enter</kbd>
- 4. Type your command. For example:
-
-    ```bat
-    scrcpy --record file.mkv
-    ```
-
-If you plan to always use the same arguments, create a file `myscrcpy.bat`
-(enable [show file extensions] to avoid confusion) in the `scrcpy` directory,
-containing your command. For example:
-
-```bat
-scrcpy --prefer-text --turn-screen-off --stay-awake
-```
-
-Then just double-click on that file.
-
-You could also edit (a copy of) `scrcpy-console.bat` or `scrcpy-noconsole.vbs`
-to add some arguments.
-
-[show file extensions]: https://www.howtogeek.com/205086/beginner-how-to-make-windows-show-file-extensions/

LICENSE

@@ -188,7 +188,7 @@
       identification within third-party archives.
 
    Copyright (C) 2018 Genymobile
-   Copyright (C) 2018-2021 Romain Vimont
+   Copyright (C) 2018-2020 Romain Vimont
 
    Licensed under the Apache License, Version 2.0 (the "License");
    you may not use this file except in compliance with the License.

README.id.md

@@ -675,7 +675,7 @@ Baca [halaman pengembang].
 ## Lisensi
 
     Copyright (C) 2018 Genymobile
-    Copyright (C) 2018-2021 Romain Vimont
+    Copyright (C) 2018-2020 Romain Vimont
 
     Licensed under the Apache License, Version 2.0 (the "License");
     you may not use this file except in compliance with the License.

README.ko.md

@@ -477,7 +477,7 @@ _²화면이 꺼진 상태에서 우클릭 시 다시 켜지며, 그 외의 상
 ## 라이선스
 
     Copyright (C) 2018 Genymobile
-    Copyright (C) 2018-2021 Romain Vimont
+    Copyright (C) 2018-2020 Romain Vimont
 
     Licensed under the Apache License, Version 2.0 (the "License");
     you may not use this file except in compliance with the License.

README.md

@@ -202,8 +202,6 @@ scrcpy --lock-video-orientation 3   # 90° clockwise
 
 This affects recording orientation.
 
-The [window may also be rotated](#rotation) independently.
-
 
 #### Encoder
 
@@ -409,9 +407,9 @@ Note that _scrcpy_ manages 3 different rotations:
  - <kbd>MOD</kbd>+<kbd>r</kbd> requests the device to switch between portrait
    and landscape (the current running app may refuse, if it does support the
    requested orientation).
- - [`--lock-video-orientation`](#lock-video-orientation) changes the mirroring
-   orientation (the orientation of the video sent from the device to the
-   computer). This affects the recording.
+ - `--lock-video-orientation` changes the mirroring orientation (the orientation
+   of the video sent from the device to the computer). This affects the
+   recording.
  - `--rotation` (or <kbd>MOD</kbd>+<kbd>←</kbd>/<kbd>MOD</kbd>+<kbd>→</kbd>)
    rotates only the window content. This affects only the display, not the
    recording.
@@ -768,7 +766,7 @@ Read the [developers page].
 ## Licence
 
     Copyright (C) 2018 Genymobile
-    Copyright (C) 2018-2021 Romain Vimont
+    Copyright (C) 2018-2020 Romain Vimont
 
     Licensed under the Apache License, Version 2.0 (the "License");
     you may not use this file except in compliance with the License.

README.pt-br.md

@@ -508,7 +508,7 @@ Leia a  [developers page].
 ## Licença
 
     Copyright (C) 2018 Genymobile
-    Copyright (C) 2018-2021 Romain Vimont
+    Copyright (C) 2018-2020 Romain Vimont
 
     Licensed under the Apache License, Version 2.0 (the "License");
     you may not use this file except in compliance with the License.

README.zh-Hans.md

@@ -703,7 +703,7 @@ _³需要安卓版本 Android >= 7。_
 ## 许可协议
 
     Copyright (C) 2018 Genymobile
-    Copyright (C) 2018-2021 Romain Vimont
+    Copyright (C) 2018-2020 Romain Vimont
 
     Licensed under the Apache License, Version 2.0 (the "License");
     you may not use this file except in compliance with the License.

README.zh-Hant.md

@@ -682,7 +682,7 @@ _³只支援 Android 7+。_
 ## Licence
 
     Copyright (C) 2018 Genymobile
-    Copyright (C) 2018-2021 Romain Vimont
+    Copyright (C) 2018-2020 Romain Vimont
 
     Licensed under the Apache License, Version 2.0 (the "License");
     you may not use this file except in compliance with the License.

app/src/scrcpy.c

@@ -34,7 +34,7 @@
 #include "util/log.h"
 #include "util/net.h"
 
-static struct server server;
+static struct server server = SERVER_INITIALIZER;
 static struct screen screen = SCREEN_INITIALIZER;
 static struct fps_counter fps_counter;
 static struct video_buffer video_buffer;
@@ -304,19 +304,6 @@ av_log_callback(void *avcl, int level, const char *fmt, va_list vl) {
 
 bool
 scrcpy(const struct scrcpy_options *options) {
-    if (!server_init(&server)) {
-        return false;
-    }
-
-    bool server_started = false;
-    bool fps_counter_initialized = false;
-    bool video_buffer_initialized = false;
-    bool file_handler_initialized = false;
-    bool recorder_initialized = false;
-    bool stream_started = false;
-    bool controller_initialized = false;
-    bool controller_started = false;
-
     bool record = !!options->record_filename;
     struct server_params params = {
         .log_level = options->log_level,
@@ -335,10 +322,18 @@ scrcpy(const struct scrcpy_options *options) {
         .force_adb_forward = options->force_adb_forward,
     };
     if (!server_start(&server, options->serial, &params)) {
-        goto end;
+        return false;
     }
 
-    server_started = true;
+    bool ret = false;
+
+    bool fps_counter_initialized = false;
+    bool video_buffer_initialized = false;
+    bool file_handler_initialized = false;
+    bool recorder_initialized = false;
+    bool stream_started = false;
+    bool controller_initialized = false;
+    bool controller_started = false;
 
     if (!sdl_init_and_configure(options->display, options->render_driver,
                                 options->disable_screensaver)) {
@@ -449,7 +444,7 @@ scrcpy(const struct scrcpy_options *options) {
 
     input_manager_init(&input_manager, options);
 
-    bool ret = event_loop(options);
+    ret = event_loop(options);
     LOGD("quit...");
 
     screen_destroy(&screen);
@@ -470,10 +465,8 @@ end:
         fps_counter_interrupt(&fps_counter);
     }
 
-    if (server_started) {
-        // shutdown the sockets and kill the server
-        server_stop(&server);
-    }
+    // shutdown the sockets and kill the server
+    server_stop(&server);
 
     // now that the sockets are shutdown, the stream and controller are
     // interrupted, we can join them

app/src/server.c

@@ -11,7 +11,6 @@
 
 #include "config.h"
 #include "command.h"
-#include "util/lock.h"
 #include "util/log.h"
 #include "util/net.h"
 #include "util/str_util.h"
@@ -354,51 +353,15 @@ close_socket(socket_t socket) {
     }
 }
 
-bool
+void
 server_init(struct server *server) {
-    server->serial = NULL;
-    server->process = PROCESS_NONE;
-    server->wait_server_thread = NULL;
-    atomic_flag_clear_explicit(&server->server_socket_closed,
-                               memory_order_relaxed);
-
-    server->mutex = SDL_CreateMutex();
-    if (!server->mutex) {
-        return false;
-    }
-
-    server->process_terminated_cond = SDL_CreateCond();
-    if (!server->process_terminated_cond) {
-        SDL_DestroyMutex(server->mutex);
-        return false;
-    }
-
-    server->process_terminated = false;
-
-    server->server_socket = INVALID_SOCKET;
-    server->video_socket = INVALID_SOCKET;
-    server->control_socket = INVALID_SOCKET;
-
-    server->port_range.first = 0;
-    server->port_range.last = 0;
-    server->local_port = 0;
-
-    server->tunnel_enabled = false;
-    server->tunnel_forward = false;
-
-    return true;
+    *server = (struct server) SERVER_INITIALIZER;
 }
 
 static int
 run_wait_server(void *data) {
     struct server *server = data;
     cmd_simple_wait(server->process, NULL); // ignore exit code
-
-    mutex_lock(server->mutex);
-    server->process_terminated = true;
-    cond_signal(server->process_terminated_cond);
-    mutex_unlock(server->mutex);
-
     // no need for synchronization, server_socket is initialized before this
     // thread was created
     if (server->server_socket != INVALID_SOCKET
@@ -535,34 +498,10 @@ server_stop(struct server *server) {
         disable_tunnel(server);
     }
 
-    // Give some delay for the server to terminate properly
-    mutex_lock(server->mutex);
-    int r = 0;
-    if (!server->process_terminated) {
-#define WATCHDOG_DELAY_MS 1000
-        r = cond_wait_timeout(server->process_terminated_cond,
-                              server->mutex,
-                              WATCHDOG_DELAY_MS);
-    }
-    mutex_unlock(server->mutex);
-
-    // After this delay, kill the server if it's not dead already.
-    // On some devices, closing the sockets is not sufficient to wake up the
-    // blocking calls while the device is asleep.
-    if (r == SDL_MUTEX_TIMEDOUT) {
-        // FIXME There is a race condition here: there is a small chance that
-        // the process is already terminated, and the PID assigned to a new
-        // process.
-        LOGW("Killing the server...");
-        cmd_terminate(server->process);
-    }
-
     SDL_WaitThread(server->wait_server_thread, NULL);
 }
 
 void
 server_destroy(struct server *server) {
     SDL_free(server->serial);
-    SDL_DestroyCond(server->process_terminated_cond);
-    SDL_DestroyMutex(server->mutex);
 }

app/src/server.h

@@ -18,11 +18,6 @@ struct server {
     process_t process;
     SDL_Thread *wait_server_thread;
     atomic_flag server_socket_closed;
-
-    SDL_mutex *mutex;
-    SDL_cond *process_terminated_cond;
-    bool process_terminated;
-
     socket_t server_socket; // only used if !tunnel_forward
     socket_t video_socket;
     socket_t control_socket;
@@ -32,6 +27,23 @@ struct server {
     bool tunnel_forward; // use "adb forward" instead of "adb reverse"
 };
 
+#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, \
+    .port_range = { \
+        .first = 0, \
+        .last = 0, \
+    }, \
+    .local_port = 0, \
+    .tunnel_enabled = false, \
+    .tunnel_forward = false, \
+}
+
 struct server_params {
     enum sc_log_level log_level;
     const char *crop;
@@ -50,7 +62,7 @@ struct server_params {
 };
 
 // init default values
-bool
+void
 server_init(struct server *server);
 
 // push, enable tunnel et start the server

app/src/sys/win/command.c

@@ -56,7 +56,7 @@ cmd_execute(const char *const argv[], HANDLE *handle) {
 
 bool
 cmd_terminate(HANDLE handle) {
-    return TerminateProcess(handle, 1);
+    return TerminateProcess(handle, 1) && CloseHandle(handle);
 }
 
 bool
@@ -70,7 +70,6 @@ cmd_simple_wait(HANDLE handle, DWORD *exit_code) {
     if (exit_code) {
         *exit_code = code;
     }
-    CloseHandle(handle);
     return !code;
 }
 

cross_win32.txt

@@ -17,4 +17,4 @@ endian = 'little'
 [properties]
 prebuilt_ffmpeg_shared = 'ffmpeg-4.3.1-win32-shared'
 prebuilt_ffmpeg_dev = 'ffmpeg-4.3.1-win32-dev'
-prebuilt_sdl2 = 'SDL2-2.0.14/i686-w64-mingw32'
+prebuilt_sdl2 = 'SDL2-2.0.12/i686-w64-mingw32'

cross_win64.txt

@@ -17,4 +17,4 @@ endian = 'little'
 [properties]
 prebuilt_ffmpeg_shared = 'ffmpeg-4.3.1-win64-shared'
 prebuilt_ffmpeg_dev = 'ffmpeg-4.3.1-win64-dev'
-prebuilt_sdl2 = 'SDL2-2.0.14/x86_64-w64-mingw32'
+prebuilt_sdl2 = 'SDL2-2.0.12/x86_64-w64-mingw32'

meson.build

@@ -1,5 +1,5 @@
 project('scrcpy', 'c',
-        version: '1.17',
+        version: '1.16',
         meson_version: '>= 0.48',
         default_options: [
             'c_std=c11',

prebuilt-deps/Makefile

@@ -30,9 +30,9 @@ prepare-ffmpeg-dev-win64:
 		ffmpeg-4.3.1-win64-dev
 
 prepare-sdl2:
-	@./prepare-dep https://libsdl.org/release/SDL2-devel-2.0.14-mingw.tar.gz \
-		405eaff3eb18f2e08fe669ef9e63bc9a8710b7d343756f238619761e9b60407d \
-		SDL2-2.0.14
+	@./prepare-dep https://libsdl.org/release/SDL2-devel-2.0.12-mingw.tar.gz \
+		e614a60f797e35ef9f3f96aef3dc6a1d786de3cc7ca6216f97e435c0b6aafc46 \
+		SDL2-2.0.12
 
 prepare-adb:
 	@./prepare-dep https://dl.google.com/android/repository/platform-tools_r30.0.5-windows.zip \

release.make

@@ -102,7 +102,7 @@ dist-win32: build-server build-win32
 	cp prebuilt-deps/platform-tools/adb.exe "$(DIST)/$(WIN32_TARGET_DIR)/"
 	cp prebuilt-deps/platform-tools/AdbWinApi.dll "$(DIST)/$(WIN32_TARGET_DIR)/"
 	cp prebuilt-deps/platform-tools/AdbWinUsbApi.dll "$(DIST)/$(WIN32_TARGET_DIR)/"
-	cp prebuilt-deps/SDL2-2.0.14/i686-w64-mingw32/bin/SDL2.dll "$(DIST)/$(WIN32_TARGET_DIR)/"
+	cp prebuilt-deps/SDL2-2.0.12/i686-w64-mingw32/bin/SDL2.dll "$(DIST)/$(WIN32_TARGET_DIR)/"
 
 dist-win64: build-server build-win64
 	mkdir -p "$(DIST)/$(WIN64_TARGET_DIR)"
@@ -118,7 +118,7 @@ dist-win64: build-server build-win64
 	cp prebuilt-deps/platform-tools/adb.exe "$(DIST)/$(WIN64_TARGET_DIR)/"
 	cp prebuilt-deps/platform-tools/AdbWinApi.dll "$(DIST)/$(WIN64_TARGET_DIR)/"
 	cp prebuilt-deps/platform-tools/AdbWinUsbApi.dll "$(DIST)/$(WIN64_TARGET_DIR)/"
-	cp prebuilt-deps/SDL2-2.0.14/x86_64-w64-mingw32/bin/SDL2.dll "$(DIST)/$(WIN64_TARGET_DIR)/"
+	cp prebuilt-deps/SDL2-2.0.12/x86_64-w64-mingw32/bin/SDL2.dll "$(DIST)/$(WIN64_TARGET_DIR)/"
 
 zip-win32: dist-win32
 	cd "$(DIST)/$(WIN32_TARGET_DIR)"; \

release.sh

@@ -1,2 +1,2 @@
 #!/bin/bash
-make -f release.mk
+make -f release.make

server/build.gradle

@@ -6,8 +6,8 @@ android {
         applicationId "com.genymobile.scrcpy"
         minSdkVersion 21
         targetSdkVersion 30
-        versionCode 20
-        versionName "1.17"
+        versionCode 19
+        versionName "1.16"
         testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
     }
     buildTypes {

server/build_without_gradle.sh

@@ -12,7 +12,7 @@
 set -e
 
 SCRCPY_DEBUG=false
-SCRCPY_VERSION_NAME=1.17
+SCRCPY_VERSION_NAME=1.16
 
 PLATFORM=${ANDROID_PLATFORM:-30}
 BUILD_TOOLS=${ANDROID_BUILD_TOOLS:-30.0.0}