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Commit e955efdf authored by Hansong Zhang's avatar Hansong Zhang
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GD: Open a pid file when stack is running 

So that some other manager process can detect it

Test: cert/run
Bug: 181590011
Tag: #refactor
Change-Id: I340b5d25b4374d47c8c769d80fcd287b23696202
parent 5f6bda0c

system/gd/stack_manager.cc

+11 −0
Original line number Diff line number Diff line
@@ -16,6 +16,8 @@ 


#include "stack_manager.h"



#include <fcntl.h>

#include <unistd.h>

#include <chrono>

#include <future>

#include <queue>
@@ -32,6 +34,8 @@ using ::bluetooth::os::Thread; 


namespace bluetooth {



constexpr char bluetooth_pid_file[] = "/var/run/bluetooth";



void StackManager::StartUp(ModuleList* modules, Thread* stack_thread) {

  management_thread_ = new Thread("management_thread", Thread::Priority::NORMAL);

  handler_ = new Handler(management_thread_);
@@ -47,6 +51,10 @@ void StackManager::StartUp(ModuleList* modules, Thread* stack_thread) { 
      "Can't start stack, last instance: %s",

      registry_.last_instance_.c_str());



  pid_fd_ = open(bluetooth_pid_file, O_WRONLY | O_CREAT, 0644);

  pid_t my_pid = getpid();

  write(pid_fd_, &my_pid, sizeof(pid_t));



  LOG_INFO("init complete");

}
@@ -70,6 +78,9 @@ void StackManager::ShutDown() { 
  handler_->WaitUntilStopped(std::chrono::milliseconds(2000));

  delete handler_;

  delete management_thread_;



  unlink(bluetooth_pid_file);

  close(pid_fd_);

}



void StackManager::handle_shut_down(std::promise<void> promise) {

system/gd/stack_manager.h

+1 −0
Original line number Diff line number Diff line
@@ -36,6 +36,7 @@ class StackManager { 
  os::Thread* management_thread_ = nullptr;

  os::Handler* handler_ = nullptr;

  ModuleRegistry registry_;

  int pid_fd_ = 0;



  void handle_start_up(ModuleList* modules, os::Thread* stack_thread, std::promise<void> promise);

  void handle_shut_down(std::promise<void> promise);