Merge pull request #1737

69ab14d9 More robust battery status handling. (Dion Ahmetaj)

src/cryptonote_basic/miner.cpp

@@ -41,6 +41,7 @@
 #include "common/command_line.h"
 #include "string_coding.h"
 #include "storages/portable_storage_template_helper.h"
+#include "boost/logic/tribool.hpp"
 
 #undef MONERO_DEFAULT_LOG_CATEGORY
 #define MONERO_DEFAULT_LOG_CATEGORY "miner"
@@ -61,6 +62,7 @@ namespace cryptonote
     const command_line::arg_descriptor<std::string> arg_start_mining =    {"start-mining", "Specify wallet address to mining for", "", true};
     const command_line::arg_descriptor<uint32_t>      arg_mining_threads =  {"mining-threads", "Specify mining threads count", 0, true};
     const command_line::arg_descriptor<bool>        arg_bg_mining_enable =  {"bg-mining-enable", "enable/disable background mining", true, true};
+    const command_line::arg_descriptor<bool>        arg_bg_mining_ignore_battery =  {"bg-mining-ignore-battery", "if true, assumes plugged in when unable to query system power status", false, true};    
     const command_line::arg_descriptor<uint64_t>    arg_bg_mining_min_idle_interval_seconds =  {"bg-mining-min-idle-interval", "Specify min lookback interval in seconds for determining idle state", miner::BACKGROUND_MINING_DEFAULT_MIN_IDLE_INTERVAL_IN_SECONDS, true};
     const command_line::arg_descriptor<uint8_t>     arg_bg_mining_idle_threshold_percentage =  {"bg-mining-idle-threshold", "Specify minimum avg idle percentage over lookback interval", miner::BACKGROUND_MINING_DEFAULT_IDLE_THRESHOLD_PERCENTAGE, true};
     const command_line::arg_descriptor<uint8_t>     arg_bg_mining_miner_target_percentage =  {"bg-mining-miner-target", "Specificy maximum percentage cpu use by miner(s)", miner::BACKGROUND_MINING_DEFAULT_MINING_TARGET_PERCENTAGE, true};
@@ -181,6 +183,7 @@ namespace cryptonote
     command_line::add_arg(desc, arg_start_mining);
     command_line::add_arg(desc, arg_mining_threads);
     command_line::add_arg(desc, arg_bg_mining_enable);
+    command_line::add_arg(desc, arg_bg_mining_ignore_battery);    
     command_line::add_arg(desc, arg_bg_mining_min_idle_interval_seconds);
     command_line::add_arg(desc, arg_bg_mining_idle_threshold_percentage);
     command_line::add_arg(desc, arg_bg_mining_miner_target_percentage);
@@ -230,6 +233,8 @@ namespace cryptonote
     // Let init set all parameters even if background mining is not enabled, they can start later with params set
     if(command_line::has_arg(vm, arg_bg_mining_enable))
       set_is_background_mining_enabled( command_line::get_arg(vm, arg_bg_mining_enable) );
+    if(command_line::has_arg(vm, arg_bg_mining_ignore_battery))
+      set_ignore_battery( command_line::get_arg(vm, arg_bg_mining_ignore_battery) );      
     if(command_line::has_arg(vm, arg_bg_mining_min_idle_interval_seconds))
       set_min_idle_seconds( command_line::get_arg(vm, arg_bg_mining_min_idle_interval_seconds) );
     if(command_line::has_arg(vm, arg_bg_mining_idle_threshold_percentage))
@@ -254,7 +259,7 @@ namespace cryptonote
     return m_threads_total;
   }
   //-----------------------------------------------------------------------------------------------------
-  bool miner::start(const account_public_address& adr, size_t threads_count, const boost::thread::attributes& attrs, bool do_background)
+  bool miner::start(const account_public_address& adr, size_t threads_count, const boost::thread::attributes& attrs, bool do_background, bool ignore_battery)
   {
     m_mine_address = adr;
     m_threads_total = static_cast<uint32_t>(threads_count);
@@ -278,6 +283,7 @@ namespace cryptonote
     boost::interprocess::ipcdetail::atomic_write32(&m_stop, 0);
     boost::interprocess::ipcdetail::atomic_write32(&m_thread_index, 0);
     set_is_background_mining_enabled(do_background);
+    set_ignore_battery(ignore_battery);
     
     for(size_t i = 0; i != threads_count; i++)
     {
@@ -469,6 +475,11 @@ namespace cryptonote
     return m_is_background_mining_enabled;
   }
   //-----------------------------------------------------------------------------------------------------
+  bool miner::get_ignore_battery() const
+  {
+    return m_ignore_battery;
+  }  
+  //-----------------------------------------------------------------------------------------------------
   /**
   * This has differing behaviour depending on if mining has been started/etc.
   * Note: add documentation
@@ -482,6 +493,11 @@ namespace cryptonote
     return true;
   }
   //-----------------------------------------------------------------------------------------------------
+  void miner::set_ignore_battery(bool ignore_battery)
+  {
+    m_ignore_battery = ignore_battery;
+  }
+  //-----------------------------------------------------------------------------------------------------
   uint64_t miner::get_min_idle_seconds() const
   {
     return m_min_idle_seconds;
@@ -575,7 +591,21 @@ namespace cryptonote
         continue; // if interrupted because stop called, loop should end ..
       }
 
-      bool on_ac_power = !on_battery_power();
+      boost::tribool battery_powered(on_battery_power());
+      bool on_ac_power = false;
+      if(indeterminate( battery_powered ))
+      {
+        // name could be better, only ignores battery requirement if we failed
+        // to get the status of the system
+        if( m_ignore_battery )
+        {
+          on_ac_power = true;
+        }
+      }
+      else
+      {
+        on_ac_power = !battery_powered;
+      }
 
       if( m_is_background_mining_started )
       {
@@ -763,45 +793,54 @@ namespace cryptonote
     return (uint8_t)( ceil( (other * 1.f / total * 1.f) * 100) );    
   }
   //-----------------------------------------------------------------------------------------------------    
-  bool miner::on_battery_power()
+  boost::logic::tribool miner::on_battery_power()
   {
     #ifdef _WIN32
 
       SYSTEM_POWER_STATUS power_status;
     	if ( GetSystemPowerStatus( &power_status ) != 0 )
     	{
-        return power_status.ACLineStatus != 1;
+        return boost::logic::tribool(power_status.ACLineStatus != 1);
     	}
 
     #elif defined(__linux__)
 
       // i've only tested on UBUNTU, these paths might be different on other systems
       // need to figure out a way to make this more flexible
-      const std::string POWER_SUPPLY_STATUS_PATH = "/sys/class/power_supply/ACAD/online";
-
-      if( !epee::file_io_utils::is_file_exist(POWER_SUPPLY_STATUS_PATH) )
+      std::string power_supply_path = "";
+      const std::string POWER_SUPPLY_STATUS_PATHS[] = 
       {
-        LOG_ERROR("'" << POWER_SUPPLY_STATUS_PATH << "' file does not exist, can't determine if on AC power");
-        return false;
+        "/sys/class/power_supply/ACAD/online",
+        "/sys/class/power_supply/AC/online"        
+      };
+      
+      for(const std::string& path : POWER_SUPPLY_STATUS_PATHS)
+      {
+        if( epee::file_io_utils::is_file_exist(path) )
+        {
+          power_supply_path = path;
+          break;
+        }
+      }
+      
+      if( power_supply_path.empty() )
+      {
+        LOG_ERROR("Couldn't find battery/power status file, can't determine if plugged in!");
+        return boost::logic::tribool(boost::logic::indeterminate);;
       }
 
-      std::ifstream power_stream(POWER_SUPPLY_STATUS_PATH);
+      std::ifstream power_stream(power_supply_path);
       if( power_stream.fail() )
       {
-        LOG_ERROR("failed to open '" << POWER_SUPPLY_STATUS_PATH << "'");
-        return false;
+        LOG_ERROR("failed to open '" << power_supply_path << "'");
+        return boost::logic::tribool(boost::logic::indeterminate);;
       }
 
-      return power_stream.get() != '1';
+      return boost::logic::tribool( (power_stream.get() != '1') );
 
     #endif
     
     LOG_ERROR("couldn't query power status");
-    return false; // shouldn't get here unless no support for querying battery status
-    // TODO: return enum with ability to signify failure in querying for power status
-    // and change bg-mining logic so that it stops. As @vtnerd states, with the current
-    // setup "If someone enabled background mining on a system that fails to grab ac
-    // status, it will just continually check with little hope of ever being resolved
-    // automagically". This is also the case for time/idle stats functions.
+    return boost::logic::tribool(boost::logic::indeterminate);
   }
 }

src/cryptonote_basic/miner.h

@@ -31,6 +31,7 @@
 #pragma once 
 
 #include <boost/program_options.hpp>
+#include <boost/logic/tribool_fwd.hpp>
 #include <atomic>
 #include "cryptonote_basic.h"
 #include "difficulty.h"
@@ -67,7 +68,7 @@ namespace cryptonote
     static void init_options(boost::program_options::options_description& desc);
     bool set_block_template(const block& bl, const difficulty_type& diffic, uint64_t height);
     bool on_block_chain_update();
-    bool start(const account_public_address& adr, size_t threads_count, const boost::thread::attributes& attrs, bool do_background = false);
+    bool start(const account_public_address& adr, size_t threads_count, const boost::thread::attributes& attrs, bool do_background = false, bool ignore_battery = false);
     uint64_t get_speed() const;
     uint32_t get_threads_count() const;
     void send_stop_signal();
@@ -82,6 +83,7 @@ namespace cryptonote
     void resume();
     void do_print_hashrate(bool do_hr);
     bool get_is_background_mining_enabled() const;
+    bool get_ignore_battery() const;
     uint64_t get_min_idle_seconds() const;
     bool set_min_idle_seconds(uint64_t min_idle_seconds);
     uint8_t get_idle_threshold() const;
@@ -149,8 +151,10 @@ namespace cryptonote
     // background mining stuffs ..
 
     bool set_is_background_mining_enabled(bool is_background_mining_enabled);
+    void set_ignore_battery(bool ignore_battery);
     bool background_worker_thread();
     std::atomic<bool> m_is_background_mining_enabled;
+    bool m_ignore_battery;
     boost::mutex m_is_background_mining_enabled_mutex;
     boost::condition_variable m_is_background_mining_enabled_cond;
     std::atomic<bool> m_is_background_mining_started;
@@ -164,6 +168,6 @@ namespace cryptonote
     static bool get_system_times(uint64_t& total_time, uint64_t& idle_time);
     static bool get_process_time(uint64_t& total_time);
     static uint8_t get_percent_of_total(uint64_t some_time, uint64_t total_time);
-    static bool on_battery_power();
+    static boost::logic::tribool on_battery_power();
   };
 }

src/daemon/command_parser_executor.cpp

@@ -272,12 +272,18 @@ bool t_command_parser_executor::start_mining(const std::vector<std::string>& arg
     std::cout << "Mining to a testnet address, make sure this is intentional!" << std::endl;
   uint64_t threads_count = 1;
   bool do_background_mining = false;  
-  if(args.size() > 3)
+  bool ignore_battery = false;  
+  if(args.size() > 4)
   {
     return false;
   }
   
-  if(args.size() == 3)
+  if(args.size() == 4)
+  {
+    ignore_battery = args[3] == "true";
+  }  
+  
+  if(args.size() >= 3)
   {
     do_background_mining = args[2] == "true";
   }
@@ -288,7 +294,7 @@ bool t_command_parser_executor::start_mining(const std::vector<std::string>& arg
     threads_count = (ok && 0 < threads_count) ? threads_count : 1;
   }
 
-  m_executor.start_mining(adr, threads_count, testnet, do_background_mining);
+  m_executor.start_mining(adr, threads_count, testnet, do_background_mining, ignore_battery);
 
   return true;
 }

src/daemon/command_server.cpp

@@ -96,7 +96,7 @@ t_command_server::t_command_server(
   m_command_lookup.set_handler(
       "start_mining"
     , std::bind(&t_command_parser_executor::start_mining, &m_parser, p::_1)
-    , "Start mining for specified address, start_mining <addr> [<threads>] [do_background_mining], default 1 thread, no background mining"
+    , "Start mining for specified address, start_mining <addr> [<threads>] [do_background_mining] [ignore_battery], default 1 thread, no background mining"
     );
   m_command_lookup.set_handler(
       "stop_mining"

src/daemon/rpc_command_executor.cpp

@@ -929,13 +929,14 @@ bool t_rpc_command_executor::print_transaction_pool_stats() {
   return true;
 }
 
-bool t_rpc_command_executor::start_mining(cryptonote::account_public_address address, uint64_t num_threads, bool testnet, bool do_background_mining = false) {
+bool t_rpc_command_executor::start_mining(cryptonote::account_public_address address, uint64_t num_threads, bool testnet, bool do_background_mining, bool ignore_battery) {
   cryptonote::COMMAND_RPC_START_MINING::request req;
   cryptonote::COMMAND_RPC_START_MINING::response res;
   req.miner_address = cryptonote::get_account_address_as_str(testnet, address);
   req.threads_count = num_threads;
   req.do_background_mining = do_background_mining;
-
+  req.ignore_battery = ignore_battery;
+  
   std::string fail_message = "Mining did not start";
 
   if (m_is_rpc)

src/daemon/rpc_command_executor.h

@@ -106,7 +106,7 @@ public:
 
   bool print_transaction_pool_stats();
 
-  bool start_mining(cryptonote::account_public_address address, uint64_t num_threads, bool testnet, bool do_background_mining);
+  bool start_mining(cryptonote::account_public_address address, uint64_t num_threads, bool testnet, bool do_background_mining = false, bool ignore_battery = false);
 
   bool stop_mining();
 

src/rpc/core_rpc_server.cpp

@@ -635,7 +635,7 @@ namespace cryptonote
     boost::thread::attributes attrs;
     attrs.set_stack_size(THREAD_STACK_SIZE);
 
-    if(!m_core.get_miner().start(adr, static_cast<size_t>(req.threads_count), attrs, req.do_background_mining))
+    if(!m_core.get_miner().start(adr, static_cast<size_t>(req.threads_count), attrs, req.do_background_mining, req.ignore_battery))
     {
       res.status = "Failed, mining not started";
       LOG_PRINT_L0(res.status);

src/rpc/core_rpc_server_commands_defs.h

@@ -501,11 +501,13 @@ namespace cryptonote
       std::string miner_address;
       uint64_t    threads_count;
       bool        do_background_mining;
+      bool        ignore_battery;
 
       BEGIN_KV_SERIALIZE_MAP()
         KV_SERIALIZE(miner_address)
         KV_SERIALIZE(threads_count)
         KV_SERIALIZE(do_background_mining)        
+        KV_SERIALIZE(ignore_battery)        
       END_KV_SERIALIZE_MAP()
     };