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Fix adb server hang

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Since commit 0426708544, the server is run
in a dedicated thread. For SDL, many signals, including SIGINT and
SIGTERM, are masked for new threads. As a result, if the adb server is
not already running, adb commands invoked by scrcpy will start an adb
server that ignores those signals and cannot be terminated at system
shutdown.

Fixes #2873 <https://github.com/Genymobile/scrcpy/issues/2873>
PR #2870 <https://github.com/Genymobile/scrcpy/pull/2870>

Signed-off-by: Romain Vimont <rom@rom1v.com>
This commit is contained in:
Chih-Hsuan Yen 2021-12-05 12:58:02 +08:00 committed by Romain Vimont
parent 0685c491cd
commit d049671908
1 changed files with 7 additions and 0 deletions
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7
app/src/sys/unix/process.c
View file

@ -119,6 +119,13 @@ sc_process_execute_p(const char *const argv[], sc_pid *pid, unsigned flags,
close(internal[0]);
enum sc_process_result err;
// Somehow SDL masks many signals - undo them for other processes
// https://github.com/libsdl-org/SDL/blob/release-2.0.18/src/thread/pthread/SDL_systhread.c#L167
sigset_t mask;
sigemptyset(&mask);
sigprocmask(SIG_SETMASK, &mask, NULL);
if (fcntl(internal[1], F_SETFD, FD_CLOEXEC) == 0) {
execvp(argv[0], (char *const *) argv);
perror("exec");