From 912515303b6e7a6dee586a70d5eb02e4129ce22c Mon Sep 17 00:00:00 2001
From: dec05eba <dec05eba@protonmail.com>
Date: Fri, 30 Sep 2022 16:24:34 +0200
Subject: Remove allowing only 1 process of gpu-screen-recorder at a time

---
 src/main.cpp | 60 ------------------------------------------------------------
 1 file changed, 60 deletions(-)

diff --git a/src/main.cpp b/src/main.cpp
index a6e76be..caea9b6 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -1033,70 +1033,11 @@ static void save_replay_async(AVCodecContext *video_codec_context, int video_str
     });
 }
 
-static bool is_process_running_program(pid_t pid, const char *program_name) {
-    char filepath[256];
-    snprintf(filepath, sizeof(filepath), "/proc/%ld/exe", (long)pid);
-
-    char resolved_path[PATH_MAX];
-    const ssize_t resolved_path_len = readlink(filepath, resolved_path, sizeof(resolved_path) - 1);
-    if(resolved_path_len == -1)
-        return false;
-    
-    resolved_path[resolved_path_len] = '\0';
-
-    const int program_name_len = strlen(program_name);
-    return resolved_path_len >= program_name_len && memcmp(resolved_path + resolved_path_len - program_name_len, program_name, program_name_len) == 0;
-}
-
-static void handle_existing_pid_file() {
-    char buffer[256];
-    int fd = open(pid_file, O_RDONLY);
-    if(fd == -1)
-        return;
-
-    ssize_t bytes_read = read(fd, buffer, sizeof(buffer) - 1);
-    if(bytes_read < 0) {
-        perror("failed to read gpu-screen-recorder pid file");
-        exit(1);
-    }
-    buffer[bytes_read] = '\0';
-    close(fd);
-
-    long pid = 0;
-    if(sscanf(buffer, "%ld %120s", &pid, buffer) == 2) {
-        if(is_process_running_program(pid, "gpu-screen-recorder")) {
-            fprintf(stderr, "Error: gpu-screen-recorder is already running\n");
-            exit(1);
-        }
-    } else {
-        fprintf(stderr, "Warning: gpu-screen-recorder pid file is in incorrect format, it's possible that its corrupt. Replacing file and continuing...\n");
-    }
-    unlink(pid_file);
-}
-
-static void handle_new_pid_file(const char *mode) {
-    int fd = open(pid_file, O_WRONLY|O_CREAT|O_TRUNC, 0777);
-    if(fd == -1) {
-        perror("failed to create gpu-screen-recorder pid file");
-        exit(1);
-    }
-
-    char buffer[256];
-    const int buffer_size = snprintf(buffer, sizeof(buffer), "%ld %s", (long)getpid(), mode);
-    if(write(fd, buffer, buffer_size) == -1) {
-        perror("failed to write gpu-screen-recorder pid file");
-        exit(1);
-    }
-    close(fd);
-}
-
 int main(int argc, char **argv) {
     signal(SIGTERM, term_handler);
     signal(SIGINT, int_handler);
     signal(SIGUSR1, save_replay_handler);
 
-    handle_existing_pid_file();
-
     std::map<std::string, Arg> args = {
         { "-w", Arg { {}, false, false } },
         //{ "-s", Arg { nullptr, true } },
@@ -1601,7 +1542,6 @@ int main(int argc, char **argv) {
         }, av_format_context, &write_output_mutex);
     }
 
-    handle_new_pid_file(replay_buffer_size_secs == -1 ? "record" : "replay");
     started = 1;
 
     // Set update_fps to 24 to test if duplicate/delayed frames cause video/audio desync or too fast/slow video.
-- 
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