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Wait server from a separate thread

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Create a thread just to wait for the server process exit.

This paves the way to simply wake up a blocking accept() in a portable
way.
This commit is contained in:
Romain Vimont 2020-03-28 23:15:15 +01:00
parent 64d5edce92
commit d421741a83
2 changed files with 24 additions and 3 deletions
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24
app/src/server.c
View file

@ -5,6 +5,7 @@
#include <inttypes.h>
#include <libgen.h>
#include <stdio.h>
#include <SDL2/SDL_thread.h>
#include <SDL2/SDL_timer.h>
#include <SDL2/SDL_platform.h>
@ -332,6 +333,14 @@ server_init(struct server *server) {
*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
LOGD("Server terminated");
return 0;
}
bool
server_start(struct server *server, const char *serial,
const struct server_params *params) {
@ -358,6 +367,16 @@ server_start(struct server *server, const char *serial,
goto error2;
}
server->wait_server_thread =
SDL_CreateThread(run_wait_server, "wait-server", server);
if (!server->wait_server_thread) {
if (!cmd_terminate(server->process)) {
LOGW("Could not terminate server");
}
cmd_simple_wait(server->process, NULL); // ignore exit code
goto error2;
}
server->tunnel_enabled = true;
return true;
@ -430,13 +449,12 @@ server_stop(struct server *server) {
LOGW("Could not terminate server");
}
cmd_simple_wait(server->process, NULL); // ignore exit code
LOGD("Server terminated");
if (server->tunnel_enabled) {
// ignore failure
disable_tunnel(server);
}
SDL_WaitThread(server->wait_server_thread, NULL);
}
void

3
app/src/server.h
View file

@ -3,6 +3,7 @@
#include <stdbool.h>
#include <stdint.h>
#include <SDL2/SDL_thread.h>
#include "config.h"
#include "command.h"
@ -12,6 +13,7 @@
struct server {
char *serial;
process_t process;
SDL_Thread *wait_server_thread;
socket_t server_socket; // only used if !tunnel_forward
socket_t video_socket;
socket_t control_socket;
@ -24,6 +26,7 @@ struct server {
#define SERVER_INITIALIZER { \
.serial = NULL, \
.process = PROCESS_NONE, \
.wait_server_thread = NULL, \
.server_socket = INVALID_SOCKET, \
.video_socket = INVALID_SOCKET, \
.control_socket = INVALID_SOCKET, \