optimize

src/untraceable.h

@@ -56,11 +56,10 @@ FORCE_INLINE void check_debugger(bool full, bool parent) {
     snprintf(path, sizeof(path), OBF("/proc/%d/status"), parent ? getppid() : getpid());
     std::ifstream ifs(path);
     std::string line, needle = OBF("TracerPid:\t");
-    int tracer_pid = 0;
+    pid_t tracer_pid = 0;
     while (std::getline(ifs, line)) {
-        auto idx = line.find(needle);
-        if (idx != std::string::npos) {
-            tracer_pid = atoi(line.c_str() + idx + needle.size());
+        if (str_starts_with(line, needle)) {
+            tracer_pid = atoi(line.c_str() + needle.size());
             break;
         }
     }

src/utils.h

@@ -66,6 +66,10 @@ FORCE_INLINE std::string base_name(const std::string& s) {
     return s.substr(s.find_last_of("\\/") + 1);
 }
 
+FORCE_INLINE bool str_starts_with(const std::string& s, const std::string& e) {
+    return s.size() >= e.size() && s.compare(0, e.size(), e) == 0;
+}
+
 FORCE_INLINE bool str_ends_with(const std::string& s, const std::string& e) {
     return s.size() >= e.size() && s.compare(s.size() - e.size(), e.size(), e) == 0;
 }
@@ -180,7 +184,7 @@ FORCE_INLINE void check_pipe_reader(int fd) {
         if (entry->d_type != DT_DIR)
             continue;
         char *end = nullptr;
-        auto pid = strtoul(entry->d_name, &end, 10);
+        auto pid = strtol(entry->d_name, &end, 10);
         if (!pid || *end)
             continue;
         if (pid == mypid || pid == ppid)